2016 Vol. 37 Issue 3
2016 Vol. 37, No. 3
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2016, 37(3): 1-9.
doi: 10.16779/j.cnki.1003-5508.2016.03.001
Abstract:
Adaptation hypothesis proposed in clone grass plants also could interpret the adaptation of architecture of tree plants to habitat resource patches,the earlier developed tree architecture would limit the latter structure,and common attentions would not be paid to this view.In this paper,studies were made of the adaptation of tree architecture for shrub Jatropha curcas to six patches of habitat resources and analysis was made of the structural limitation of this response.38 plots of 10 m×10 m forests of J.curcas were surveyed and classified into six typical habitats for differences in November of 2010.The branch diameter,length,angle,amounts were measured by a unit of every first-class branch,counting the second and third class branch amounts and selecting the mean branch and measuring the diameter,length and angle.The amounts of the first and second class branch for J.curcas had obvious responses to habitats,and there were extremely differences presented among six habitats in individual bifurcation2:1,Rb3:2,total Rb,Rd2:1,Rd3:2,total Rd,Rl2:1,Rl3:2,total Rl.Correlation analysis indicated that,Rb2:1,Rd2:1 and Rl2:1 had a negative,positive or null relationship to all types of parameters in six habitats,and totally Rb2:1 had significantly negative effects and Rd(l)2:1 had relatively and obviously positive effects.The structural limitation of earlier established architecture in J curcas could attribute to tradeoff and positive tradeoff between bifurcation amounts and their diameter and length.The adaptation of J curcas architecture to different habitat resource patches firstly established resource allocation patterns and branching pattern within individuals through branching amount control and positive and negative tradeoff with a complexity.
Adaptation hypothesis proposed in clone grass plants also could interpret the adaptation of architecture of tree plants to habitat resource patches,the earlier developed tree architecture would limit the latter structure,and common attentions would not be paid to this view.In this paper,studies were made of the adaptation of tree architecture for shrub Jatropha curcas to six patches of habitat resources and analysis was made of the structural limitation of this response.38 plots of 10 m×10 m forests of J.curcas were surveyed and classified into six typical habitats for differences in November of 2010.The branch diameter,length,angle,amounts were measured by a unit of every first-class branch,counting the second and third class branch amounts and selecting the mean branch and measuring the diameter,length and angle.The amounts of the first and second class branch for J.curcas had obvious responses to habitats,and there were extremely differences presented among six habitats in individual bifurcation2:1,Rb3:2,total Rb,Rd2:1,Rd3:2,total Rd,Rl2:1,Rl3:2,total Rl.Correlation analysis indicated that,Rb2:1,Rd2:1 and Rl2:1 had a negative,positive or null relationship to all types of parameters in six habitats,and totally Rb2:1 had significantly negative effects and Rd(l)2:1 had relatively and obviously positive effects.The structural limitation of earlier established architecture in J curcas could attribute to tradeoff and positive tradeoff between bifurcation amounts and their diameter and length.The adaptation of J curcas architecture to different habitat resource patches firstly established resource allocation patterns and branching pattern within individuals through branching amount control and positive and negative tradeoff with a complexity.
2016, 37(3): 10-14.
doi: 10.16779/j.cnki.1003-5508.2016.03.002
Abstract:
In this paper,studies were made of the total biomass,organ biomass of main trees and diversity of tree layer,shrub layer and grass layer from different density adjusting modes (4 950 trees per hectare,1 800 trees per hectare and 1 160 trees per hectare),and analysis was made of effects of density adjusting on biomass and biodiversity of artificial Picea asperata forest through representative sampling and modeling.The result showed that both individual biomass and stand biomass that mainly came from tree biomass increased significantly after density adjusting 6 years later.There were more stand biomass with 1 160 tree per hectare than those with other density.Meanwhile,density adjusting promoted significantly trunk biomass proportion.Finally,density adjusting increased the diversity of shrub and grass under forest significantly.
In this paper,studies were made of the total biomass,organ biomass of main trees and diversity of tree layer,shrub layer and grass layer from different density adjusting modes (4 950 trees per hectare,1 800 trees per hectare and 1 160 trees per hectare),and analysis was made of effects of density adjusting on biomass and biodiversity of artificial Picea asperata forest through representative sampling and modeling.The result showed that both individual biomass and stand biomass that mainly came from tree biomass increased significantly after density adjusting 6 years later.There were more stand biomass with 1 160 tree per hectare than those with other density.Meanwhile,density adjusting promoted significantly trunk biomass proportion.Finally,density adjusting increased the diversity of shrub and grass under forest significantly.
2016, 37(3): 15-19.
doi: 10.16779/j.cnki.1003-5508.2016.03.003
Abstract:
The research was conducted on the growth characteristics of Cupressus torulosa plantations in Jiange County in Sichuan province by using the stem analysis method.The results showed that the height,DBH and volume of 27-year-old Cupressus torulosa were trees 18.13 m,25.8 cm,0.407 55 m3,respectively.Their mean annual increments were 0.67 m,0.96 cm and 0.015 09 m3 .The fast growing period of tree height was in 12 years old to 21 years old and the current annual increment was 0.73 m·a-1~0.93 m·a-1.While the DBH had two fast growth periods,which were from 9 years old to 15 years old and from 21 years old to the 24 years old,respectively.The current annual increment was 1.17 cm·a-1~1.22 cm·a-1 and 1.09 cm·a-1~1.21 cm·a-1.Average increment curve and current annual increment curve of volume increased with the age.After 27 years,average increment and current annual increment of volume reached 0.015 09 m3·a-1 and 0.034 28 m3·a-1,and that didn't intersect.So Cupressus torulosa trees had not reached the quantitative maturity of volume.The logistic equation was good to fit the growth regularity of height、DBH、volume of Cupressus torulosa plantations,getting the relative values were 0.997,0.992 and 0.999.So it could be used to guide the production practice of Cupressus torulosa plantations.
The research was conducted on the growth characteristics of Cupressus torulosa plantations in Jiange County in Sichuan province by using the stem analysis method.The results showed that the height,DBH and volume of 27-year-old Cupressus torulosa were trees 18.13 m,25.8 cm,0.407 55 m3,respectively.Their mean annual increments were 0.67 m,0.96 cm and 0.015 09 m3 .The fast growing period of tree height was in 12 years old to 21 years old and the current annual increment was 0.73 m·a-1~0.93 m·a-1.While the DBH had two fast growth periods,which were from 9 years old to 15 years old and from 21 years old to the 24 years old,respectively.The current annual increment was 1.17 cm·a-1~1.22 cm·a-1 and 1.09 cm·a-1~1.21 cm·a-1.Average increment curve and current annual increment curve of volume increased with the age.After 27 years,average increment and current annual increment of volume reached 0.015 09 m3·a-1 and 0.034 28 m3·a-1,and that didn't intersect.So Cupressus torulosa trees had not reached the quantitative maturity of volume.The logistic equation was good to fit the growth regularity of height、DBH、volume of Cupressus torulosa plantations,getting the relative values were 0.997,0.992 and 0.999.So it could be used to guide the production practice of Cupressus torulosa plantations.
2016, 37(3): 20-24.
doi: 10.16779/j.cnki.1003-5508.2016.03.004
Abstract:
Chinese fir is one of important timber species in Sichuan province.To explore and utilize the plus tree and good genetic type of the Chinese fir seed orchard is an inexorable demand.The Yuejiang second generation seed orchard of Chinese fir was taken as the selection target in this study.By use of the Standare Block method,84 genotypes were choosen.the plus tree groups were made up of 197 maternal plants,their diameter at breast height were in the range of 25 cm~40.7 cm,their average diameter was 29.7 cm.These plus tree could provide material for building a new generation seed orchard and clonal propagation due to the wide sources with abundant genetic base.
Chinese fir is one of important timber species in Sichuan province.To explore and utilize the plus tree and good genetic type of the Chinese fir seed orchard is an inexorable demand.The Yuejiang second generation seed orchard of Chinese fir was taken as the selection target in this study.By use of the Standare Block method,84 genotypes were choosen.the plus tree groups were made up of 197 maternal plants,their diameter at breast height were in the range of 25 cm~40.7 cm,their average diameter was 29.7 cm.These plus tree could provide material for building a new generation seed orchard and clonal propagation due to the wide sources with abundant genetic base.
2016, 37(3): 25-30.
doi: 10.16779/j.cnki.1003-5508.2016.03.005
Abstract:
Selecting the Zagunao River arid valley area in the upper reaches of the Minjiang River valley as the research object,using the data of field investigation,combined with investigation subcompartment data of forest resources and forest land use data protection,and based on factors such as the topography,soil,water,vegetation and so on,nine factors of habitat quality were evaluated in the region,and afforestation measures and countermeasures were put forward according to the evaluation results,aiming to provide scientific basis and theoretical guidance for the area of afforestation tree species selection and configuration model,but also for the similar difficult site conditions in artificial vegetation restoration.
Selecting the Zagunao River arid valley area in the upper reaches of the Minjiang River valley as the research object,using the data of field investigation,combined with investigation subcompartment data of forest resources and forest land use data protection,and based on factors such as the topography,soil,water,vegetation and so on,nine factors of habitat quality were evaluated in the region,and afforestation measures and countermeasures were put forward according to the evaluation results,aiming to provide scientific basis and theoretical guidance for the area of afforestation tree species selection and configuration model,but also for the similar difficult site conditions in artificial vegetation restoration.
2016, 37(3): 31-38.
doi: 10.16779/j.cnki.1003-5508.2016.03.006
Abstract:
By using the atomic absorption spectrometry,determination was conducted on the content of Cadmium (Cd) in the soil and bark,leaf,green husk,shell and kernel of walnuts from Panzhihua-Xichang Regions' walnut producing areas in order to study the accumulation characteristics of cadmium (Cd) and consumption risk of the walnut.The results showed that the content of Cd in the soil was significantly higher than that in the organs of the walnut tree,and there were soil samples which exceeded the national standard; the content of Cd in the leaf samples was significantly higher than that in the walnut;with the increase of Cd content in the soil,the bark,leaf,green husk,shell,and kernel didnot show an obvious enrichment regularity,and the accumulation ability of the walnut's edible parts was weaker as compared with the other main organs;The results of the Nemerow Index Method showed that the comprehensive pollution index of Cd in the walnut was P<1,indicating the walnut samples of the experimental point in production bases of Panzhihua-Xichang regions were out of Cd pollution;Referring to China's current standards and the tree nut consumption amount of Chinese residents,it was calculated that the target risk factor about Cd in the walnut was much lower than 1.0 no matter for adults or kids,which meant that the content of heavy metal Cd in the edible parts of walnut was temporarily risk-free for Chinese consumers' health.However,from the overall situation,the locality soil and edible parts of walnut would still need strict a sampling examination to reduce the probability of product pollution and human health damage.
By using the atomic absorption spectrometry,determination was conducted on the content of Cadmium (Cd) in the soil and bark,leaf,green husk,shell and kernel of walnuts from Panzhihua-Xichang Regions' walnut producing areas in order to study the accumulation characteristics of cadmium (Cd) and consumption risk of the walnut.The results showed that the content of Cd in the soil was significantly higher than that in the organs of the walnut tree,and there were soil samples which exceeded the national standard; the content of Cd in the leaf samples was significantly higher than that in the walnut;with the increase of Cd content in the soil,the bark,leaf,green husk,shell,and kernel didnot show an obvious enrichment regularity,and the accumulation ability of the walnut's edible parts was weaker as compared with the other main organs;The results of the Nemerow Index Method showed that the comprehensive pollution index of Cd in the walnut was P<1,indicating the walnut samples of the experimental point in production bases of Panzhihua-Xichang regions were out of Cd pollution;Referring to China's current standards and the tree nut consumption amount of Chinese residents,it was calculated that the target risk factor about Cd in the walnut was much lower than 1.0 no matter for adults or kids,which meant that the content of heavy metal Cd in the edible parts of walnut was temporarily risk-free for Chinese consumers' health.However,from the overall situation,the locality soil and edible parts of walnut would still need strict a sampling examination to reduce the probability of product pollution and human health damage.
2016, 37(3): 39-43.
doi: 10.16779/j.cnki.1003-5508.2016.03.007
Abstract:
2016, 37(3): 44-48.
doi: 10.16779/j.cnki.1003-5508.2016.03.008
Abstract:
Insect olfactory related proteins are performances of insect olfactory genes,and they can control many insect behaviors,such as feeding,mating and ovipositing and so on.Insect olfactory proteins are connections between insect molecular biology and insect praxiologyn,mainly including four kinds of proteins,namely,odorant binding proteins (OBPs),chemosensory speeifie proteins (CSPs),odorant receptors (ORs) and odorant degrading enzymes (ODEs).In this paper,brief analysis is made of the binding mechanism,neural mechanism and four kinds of insect olfactory related proteins.Besides,a discussion is also made on the future research directions of insect olfactory related protein.
Insect olfactory related proteins are performances of insect olfactory genes,and they can control many insect behaviors,such as feeding,mating and ovipositing and so on.Insect olfactory proteins are connections between insect molecular biology and insect praxiologyn,mainly including four kinds of proteins,namely,odorant binding proteins (OBPs),chemosensory speeifie proteins (CSPs),odorant receptors (ORs) and odorant degrading enzymes (ODEs).In this paper,brief analysis is made of the binding mechanism,neural mechanism and four kinds of insect olfactory related proteins.Besides,a discussion is also made on the future research directions of insect olfactory related protein.
2016, 37(3): 49-53.
doi: 10.16779/j.cnki.1003-5508.2016.03.009
Abstract:
Farmhouse forests in western Sichuan (FFWS)are the crystallization and critical habitats of traditional farming civilization.They are an important part of the urban forest ecosystem of Chengdu,enjoying the important ecological value,economic and cultural values.FFWS are getting attention of more and more people.Discussion is made on the definition of FFWS,and their types,structure,composition,and value,and their protection and development and analysis is made of their current problems.Besides,a description is given of protection measures and future research priorities of FFWS.
Farmhouse forests in western Sichuan (FFWS)are the crystallization and critical habitats of traditional farming civilization.They are an important part of the urban forest ecosystem of Chengdu,enjoying the important ecological value,economic and cultural values.FFWS are getting attention of more and more people.Discussion is made on the definition of FFWS,and their types,structure,composition,and value,and their protection and development and analysis is made of their current problems.Besides,a description is given of protection measures and future research priorities of FFWS.
2016, 37(3): 54-61.
doi: 10.16779/j.cnki.1003-5508.2016.03.010
Abstract:
Favored foliage colors in autumn are genetically determined by the genes of tree species,different seasonal colors and transition are theorically controlled by the pigments (chlorophyll,anthocyanidin,xanthophyll etc.) in leaves,and the transitions of geographical environment and seasons drive and model them in time and space.In 2014,digital lapse photography was used to collect the phenological image time series of Ginkgo biloba growing in Dujiangyan Campus,then ENVI programming was used to calculate temporal changes of three vegetation indices,NDVI,Gcc and ExG.A computer program,TIMESAT,was applied to fit the double logistic function of a time series data of NDVI,Gcc and ExG of Ginkgo biloba in Dujiangyan.The maximum value method of the half curve was used to calculate the key phenological date (the serial days of a year) of G.biloba:the start date of growing season(SOS),the end date of growing season(EOS),the maximum of growing and the length of season.Analysis was made of decline percentage in fall along the curves of NDVI,Gcc and ExG respectively,and the results showed the percentage (the serial days of a year) between 50% and 90% had a good response to the released time of four red leaf tourim guide index in the same year of Sichuan Province,especially DOY from the NDVI curve was almost the same.The result showed the phenological monitoring method by digital camera-based remote sensing was a potential tool for forest tourism research.
Favored foliage colors in autumn are genetically determined by the genes of tree species,different seasonal colors and transition are theorically controlled by the pigments (chlorophyll,anthocyanidin,xanthophyll etc.) in leaves,and the transitions of geographical environment and seasons drive and model them in time and space.In 2014,digital lapse photography was used to collect the phenological image time series of Ginkgo biloba growing in Dujiangyan Campus,then ENVI programming was used to calculate temporal changes of three vegetation indices,NDVI,Gcc and ExG.A computer program,TIMESAT,was applied to fit the double logistic function of a time series data of NDVI,Gcc and ExG of Ginkgo biloba in Dujiangyan.The maximum value method of the half curve was used to calculate the key phenological date (the serial days of a year) of G.biloba:the start date of growing season(SOS),the end date of growing season(EOS),the maximum of growing and the length of season.Analysis was made of decline percentage in fall along the curves of NDVI,Gcc and ExG respectively,and the results showed the percentage (the serial days of a year) between 50% and 90% had a good response to the released time of four red leaf tourim guide index in the same year of Sichuan Province,especially DOY from the NDVI curve was almost the same.The result showed the phenological monitoring method by digital camera-based remote sensing was a potential tool for forest tourism research.
2016, 37(3): 62-65.
doi: 10.16779/j.cnki.1003-5508.2016.03.011
Abstract:
Financial support has important effects in the development of forestry industry.In order to better promote the development of financial support in forestry industry,analy is was made of the main problems of financial support in the development of forestry industry and suggestions were put forward for improvement of financial support.This might provide beneficial reference for the sustainable development of contemporary forestry.
Financial support has important effects in the development of forestry industry.In order to better promote the development of financial support in forestry industry,analy is was made of the main problems of financial support in the development of forestry industry and suggestions were put forward for improvement of financial support.This might provide beneficial reference for the sustainable development of contemporary forestry.
2016, 37(3): 66-68,14.
doi: 10.16779/j.cnki.1003-5508.2016.03.012
Abstract:
Wanglang National Nature Reserve is located in northern part of the Minshan Mountains.It is a very important reserve.Flagship species,such as giant pandas and golden monkeys and their habitats,are protected targets of this reserve.Wanglang National Nature Reserve has large area of intact and primitive ecosystems and very high biology diversities.Small mammals play the key roles in energy transformation and material circulation of forest ecosystem.According to surveying in Wanglang National Nature Reserve,48 species of small mammals have been recorded.They belong to 4 orders and 12 families.31 of 48 species belong to Oriental realm,15 species are classified as palearctic realm,and 2 species belong to widespread species.20 species are Himalayan and Hengduan mountains distribution type.Fauna characteristics exaibit to have very high diversities of species,complex and diverse fauna and very abundant ecological types of small mammals.
Wanglang National Nature Reserve is located in northern part of the Minshan Mountains.It is a very important reserve.Flagship species,such as giant pandas and golden monkeys and their habitats,are protected targets of this reserve.Wanglang National Nature Reserve has large area of intact and primitive ecosystems and very high biology diversities.Small mammals play the key roles in energy transformation and material circulation of forest ecosystem.According to surveying in Wanglang National Nature Reserve,48 species of small mammals have been recorded.They belong to 4 orders and 12 families.31 of 48 species belong to Oriental realm,15 species are classified as palearctic realm,and 2 species belong to widespread species.20 species are Himalayan and Hengduan mountains distribution type.Fauna characteristics exaibit to have very high diversities of species,complex and diverse fauna and very abundant ecological types of small mammals.
2016, 37(3): 69-74.
doi: 10.16779/j.cnki.1003-5508.2016.03.013
Abstract:
There are a variety of wetland vegetation types,abundant animal and plant resources,unique wetland landscapes,as well as profound wetland culture in Lalongcuo National Wetland Park,Baiyu,Sichuan,and the wetland resources of the park have high preservation value.In this paper,evaluation was made of the wetland resources of the park by analyzing the wetland hydrology,types,area and resource status.At the same time,a series of projects and measures were put forward for improving ecological and environmental quality,including water source protection,water system and quality protection,habitat protection and wetland culture protection,aiming to provide the theories and methods of ecological protection and planning for the wetland resources.
There are a variety of wetland vegetation types,abundant animal and plant resources,unique wetland landscapes,as well as profound wetland culture in Lalongcuo National Wetland Park,Baiyu,Sichuan,and the wetland resources of the park have high preservation value.In this paper,evaluation was made of the wetland resources of the park by analyzing the wetland hydrology,types,area and resource status.At the same time,a series of projects and measures were put forward for improving ecological and environmental quality,including water source protection,water system and quality protection,habitat protection and wetland culture protection,aiming to provide the theories and methods of ecological protection and planning for the wetland resources.
2016, 37(3): 75-83.
doi: 10.16779/j.cnki.1003-5508.2016.03.014
Abstract:
Bird investigations were conducted in Xiayong Nature Reserve in April and September of 2014.The result found that there were 210 species,belonging to 46 families,15 orders.Among them,140 species belonged to Passeriformes(66.67%),70 species belonged to other orders(33.33%); 25 species were winter migratory birds(11.90%),127 species were residents(60.48%),42 species were summer residents(20%),16 species were transient migrants (7.62%);Geographical distribution included 88 Palaearctic species(41.90%),99 Oriental species (47.14%)and 23 cosmopolitan species(10.95%).Among these birds,4 species were national first-grade protected wildlife(1.90%),16 species were national second-grade protected wildlife(7.62%).
Bird investigations were conducted in Xiayong Nature Reserve in April and September of 2014.The result found that there were 210 species,belonging to 46 families,15 orders.Among them,140 species belonged to Passeriformes(66.67%),70 species belonged to other orders(33.33%); 25 species were winter migratory birds(11.90%),127 species were residents(60.48%),42 species were summer residents(20%),16 species were transient migrants (7.62%);Geographical distribution included 88 Palaearctic species(41.90%),99 Oriental species (47.14%)and 23 cosmopolitan species(10.95%).Among these birds,4 species were national first-grade protected wildlife(1.90%),16 species were national second-grade protected wildlife(7.62%).
2016, 37(3): 84-87.
doi: 10.16779/j.cnki.1003-5508.2016.03.015
Abstract:
2016, 37(3): 88-91.
doi: 10.16779/j.cnki.1003-5508.2016.03.016
Abstract:
To enhance the growth vigor and improve cultivation resistance of Juglans regia,taking early-bearing breeds "Bokezao","Kelongzao","Zhenzhu","Chuan Xiang","Liaoning 1" and late-bearing breed "Qingxiang" as the experimental materials,studies were made of the influence of different pruning methods on the sapling growth of different varieties of Juglans regia.The results showed that (1) bud number decreased with the increase of pruning intensity,while the ability of bud into branches rose with the increase of pruning intensity.(2)The growth of new shoot elongation and diameter showed heavy pruning > middle pruning > light pruning > CK,and there was a positive correlation between them.In the six Juglans regia varieties,Bokezao was the best.(3) The leaf growth showd heavy pruning > middle pruning > light pruning > CK,the Bokezao and Kelongzao's leaf length increased obviously.(4)Pruning was timely done in the next spring after planting,heavy pruning was main and middle pruning was as supplement.The determined height of stem was 30 cm~50 cm.
To enhance the growth vigor and improve cultivation resistance of Juglans regia,taking early-bearing breeds "Bokezao","Kelongzao","Zhenzhu","Chuan Xiang","Liaoning 1" and late-bearing breed "Qingxiang" as the experimental materials,studies were made of the influence of different pruning methods on the sapling growth of different varieties of Juglans regia.The results showed that (1) bud number decreased with the increase of pruning intensity,while the ability of bud into branches rose with the increase of pruning intensity.(2)The growth of new shoot elongation and diameter showed heavy pruning > middle pruning > light pruning > CK,and there was a positive correlation between them.In the six Juglans regia varieties,Bokezao was the best.(3) The leaf growth showd heavy pruning > middle pruning > light pruning > CK,the Bokezao and Kelongzao's leaf length increased obviously.(4)Pruning was timely done in the next spring after planting,heavy pruning was main and middle pruning was as supplement.The determined height of stem was 30 cm~50 cm.
2016, 37(3): 92-95.
doi: 10.16779/j.cnki.1003-5508.2016.03.017
Abstract:
In order to speed up the recovery of Chimonobambusa quadrangularis forest in Tianquan County for providing plenty of food for the giant panda,studies were made of bamboo biomass allocation and growth rules by use of the different ecological recovery measures.The results showed that the moisture content of different age classes of bamboo under the condition of habitat restoration was less than that under the condition of habitat conservation.The data of bamboo biomass under different recovery measures showed that in addition to the new bamboo,by use of habitat restoration measures,the biomass of the bamboo forest of B and C age-level of were greater than that of the bamboo forest by use of the habitat conservation measures.By using different ecological restoration measures,the plant height,basal diameter and bamboo age were correlated,and especially,the relationship between plant height and basal diameter was significantly correlated with the habitat restoration measures.
In order to speed up the recovery of Chimonobambusa quadrangularis forest in Tianquan County for providing plenty of food for the giant panda,studies were made of bamboo biomass allocation and growth rules by use of the different ecological recovery measures.The results showed that the moisture content of different age classes of bamboo under the condition of habitat restoration was less than that under the condition of habitat conservation.The data of bamboo biomass under different recovery measures showed that in addition to the new bamboo,by use of habitat restoration measures,the biomass of the bamboo forest of B and C age-level of were greater than that of the bamboo forest by use of the habitat conservation measures.By using different ecological restoration measures,the plant height,basal diameter and bamboo age were correlated,and especially,the relationship between plant height and basal diameter was significantly correlated with the habitat restoration measures.
2016, 37(3): 96-99,53.
doi: 10.16779/j.cnki.1003-5508.2016.03.018
Abstract:
2016, 37(3): 100-102.
doi: 10.16779/j.cnki.1003-5508.2016.03.019
Abstract:
In this paper,analysis was made of the soil degradation mechanisms reasons of the Chinese fir plantation from different factors,such as irrational cultivation system and cutting method of plantation,the relase of trees allelochemicals,and so on.The results showed that (1) under three different ways of preparing soil,the fir growth increment trends wwere as follows:full reclamation > strip preparation > hole preparation,and physical and chemical indices in woodlands; (2) Different fertilization treatments had great efferts on the growth of stand.The order of the Chinese fir growth on use of different fertilization was as follows:formula fertilizer > common compound fertilizer > control treatment; (3) Biomass of organs increased in number with the prolonging of rotation,among which the accumulation in trunk was the most and fewer in branch leaves.Chinese fir plantation soil degradation mechanisms were found by utilizing the researches on the growth of Chinese fir plantation,nutrient balance and the basic theory and relative technologies of soil productivity maintenance.At the same time,the targeted soil productivity maintenance technique was also put forward.
In this paper,analysis was made of the soil degradation mechanisms reasons of the Chinese fir plantation from different factors,such as irrational cultivation system and cutting method of plantation,the relase of trees allelochemicals,and so on.The results showed that (1) under three different ways of preparing soil,the fir growth increment trends wwere as follows:full reclamation > strip preparation > hole preparation,and physical and chemical indices in woodlands; (2) Different fertilization treatments had great efferts on the growth of stand.The order of the Chinese fir growth on use of different fertilization was as follows:formula fertilizer > common compound fertilizer > control treatment; (3) Biomass of organs increased in number with the prolonging of rotation,among which the accumulation in trunk was the most and fewer in branch leaves.Chinese fir plantation soil degradation mechanisms were found by utilizing the researches on the growth of Chinese fir plantation,nutrient balance and the basic theory and relative technologies of soil productivity maintenance.At the same time,the targeted soil productivity maintenance technique was also put forward.
2016, 37(3): 103-106.
doi: 10.16779/j.cnki.1003-5508.2016.03.020
Abstract:
Researches were conducted on the effects of temperature,GA3,storage time and ways on the seed germination of P. sikkimensis and P. optata through seeds germination experiment.The tesults showed that the optimal temperature for germination was 25℃/15℃ and the best effect of GA3 concentration was 5 mg·L-1;Different storage ways had little effect on the seed germination rate.And yet the seed germination rate would decrease along with the increase of the storage time.Besides,the decrease range of P.optata was more than that of P.sikkimensis. Suggestions were offered that seeds of P.sikkimensis should be sowed in no more than 30 days after seed collection,and P.optata should be sowed right after being harvested in practice.
Researches were conducted on the effects of temperature,GA3,storage time and ways on the seed germination of P. sikkimensis and P. optata through seeds germination experiment.The tesults showed that the optimal temperature for germination was 25℃/15℃ and the best effect of GA3 concentration was 5 mg·L-1;Different storage ways had little effect on the seed germination rate.And yet the seed germination rate would decrease along with the increase of the storage time.Besides,the decrease range of P.optata was more than that of P.sikkimensis. Suggestions were offered that seeds of P.sikkimensis should be sowed in no more than 30 days after seed collection,and P.optata should be sowed right after being harvested in practice.
2016, 37(3): 107-109.
doi: 10.16779/j.cnki.1003-5508.2016.03.021
Abstract:
In this paper,analysis was made of the walnut in Xiaba Township of Xuanhan County,Sichuan Province.Its disease symptom was observed and the kind of pathogen was identified in the laboratory.The dynamic changes of susceptibility rate and susceptible index were recorded on the surface of walnut nuts and leaves.Selected five kinds of fungicides were sprayed on the walnut.The results showed that the pathogen which causes walnut disease mainly was walnut anthracnose and its increasing speed on the nuts was faster than that on the leaves.The susceptibility rate and susceptible index on the surface of walnut nuts and leaves which were sprayed by 95% prochloraz were obviously lower than others.So 95% prochloraz was the best drug to prevent the walnut anthracnose.
In this paper,analysis was made of the walnut in Xiaba Township of Xuanhan County,Sichuan Province.Its disease symptom was observed and the kind of pathogen was identified in the laboratory.The dynamic changes of susceptibility rate and susceptible index were recorded on the surface of walnut nuts and leaves.Selected five kinds of fungicides were sprayed on the walnut.The results showed that the pathogen which causes walnut disease mainly was walnut anthracnose and its increasing speed on the nuts was faster than that on the leaves.The susceptibility rate and susceptible index on the surface of walnut nuts and leaves which were sprayed by 95% prochloraz were obviously lower than others.So 95% prochloraz was the best drug to prevent the walnut anthracnose.
2016, 37(3): 110-111,24.
doi: 10.16779/j.cnki.1003-5508.2016.03.022
Abstract:
Taking one-year-old Cinnamomum camphora cutting seedlings for the object, studies were made of the effects of three different mediums on the growth of leaves, roots and plants of the cutting seedlings.The results showed that the influence of different growing mediums on the cutting seedling growth index were various.And perlite was benifitcial to the single leaf and root growth of cutting seedlings and the survival rate was the highest, reaching 38.4%, which was significantly higher than the compound soil and rice chaff ash.However, rice chaff ash was conducive to the leaf area and leaf fresh weight of the whole plant and the height and ground diameter of the cutting seedlings.So different growth mediums played varied different roles in the growth of aboveground and underground parts of the cutting seedlings.
Taking one-year-old Cinnamomum camphora cutting seedlings for the object, studies were made of the effects of three different mediums on the growth of leaves, roots and plants of the cutting seedlings.The results showed that the influence of different growing mediums on the cutting seedling growth index were various.And perlite was benifitcial to the single leaf and root growth of cutting seedlings and the survival rate was the highest, reaching 38.4%, which was significantly higher than the compound soil and rice chaff ash.However, rice chaff ash was conducive to the leaf area and leaf fresh weight of the whole plant and the height and ground diameter of the cutting seedlings.So different growth mediums played varied different roles in the growth of aboveground and underground parts of the cutting seedlings.
2016, 37(3): 112-115.
doi: 10.16779/j.cnki.1003-5508.2016.03.023
Abstract:
Pre-released training can help the enclosed animals to survive in the wild,and therefore making the pre-released giant panda have their own home range is one of the most important aims of the training.After more than 2 years of pre-released training,it was found that "Xiang-Xiang" had three marked behaviors,and persistent period had no significant difference,but the every marking time was significantly different.Man-made food had impacts on the home range of the pre-released giant panda,it would enlarge its home range after stopping the man-made food,and would spend more time and more place to forage during shooting period in the bamboo forest.Decreasing or stopping man-made food might help the pre-released giant panda to train in the wild,and mother giant pandas might help cubs to learn living skills in the wild quickly.
Pre-released training can help the enclosed animals to survive in the wild,and therefore making the pre-released giant panda have their own home range is one of the most important aims of the training.After more than 2 years of pre-released training,it was found that "Xiang-Xiang" had three marked behaviors,and persistent period had no significant difference,but the every marking time was significantly different.Man-made food had impacts on the home range of the pre-released giant panda,it would enlarge its home range after stopping the man-made food,and would spend more time and more place to forage during shooting period in the bamboo forest.Decreasing or stopping man-made food might help the pre-released giant panda to train in the wild,and mother giant pandas might help cubs to learn living skills in the wild quickly.
2016, 37(3): 116-118.
doi: 10.16779/j.cnki.1003-5508.2016.03.024
Abstract:
2016, 37(3): 119-121,30.
doi: 10.16779/j.cnki.1003-5508.2016.03.025
Abstract:
By using the corn straw,straw and rape produced in Sichuan as raw materials,studies were made of the molding density influence factors of the water content and the type of the straw.It was found that when the water content of raw materials was 18%~22%,the molding effect was the best,and the molding density was close to or greater than 1.05 g·cm-3.The ratio of straw:corn straw:rape straw was 2:2:1,and the molding effect was good,and not easy to plug the forming machine.After 2 weeks at the room temperature,the transformation of the molding straw was small.
By using the corn straw,straw and rape produced in Sichuan as raw materials,studies were made of the molding density influence factors of the water content and the type of the straw.It was found that when the water content of raw materials was 18%~22%,the molding effect was the best,and the molding density was close to or greater than 1.05 g·cm-3.The ratio of straw:corn straw:rape straw was 2:2:1,and the molding effect was good,and not easy to plug the forming machine.After 2 weeks at the room temperature,the transformation of the molding straw was small.
2016, 37(3): 122-127.
doi: 10.16779/j.cnki.1003-5508.2016.03.026
Abstract:
The wetland resource is rich in the Tibet autonomous region,and plays an irreplaceable role in national ecological system and has the vital significance to national ecological security.In this paper,discussion is made on the profile of wetland resource protection and the feasibility and necessity of the establishment of the compenasation mechanism of wetland ecological benefit in Tibet autonomous region.The system of compensation was designed from the aspects of compensation principle,objects,standards,and sources of funding.Meanwhile,in view of the problems existing in the process of wetland ecological benefit compensation mechanism,some countermeasures and suggestions are put forward.
The wetland resource is rich in the Tibet autonomous region,and plays an irreplaceable role in national ecological system and has the vital significance to national ecological security.In this paper,discussion is made on the profile of wetland resource protection and the feasibility and necessity of the establishment of the compenasation mechanism of wetland ecological benefit in Tibet autonomous region.The system of compensation was designed from the aspects of compensation principle,objects,standards,and sources of funding.Meanwhile,in view of the problems existing in the process of wetland ecological benefit compensation mechanism,some countermeasures and suggestions are put forward.
2016, 37(3): 128-130,43.
doi: 10.16779/j.cnki.1003-5508.2016.03.027
Abstract:
In this paper,a description is given of the current information establishment situation of forest industry in Mabian county,and analysis is made of its problems in the information construction.Successful domestic cases of Internet and forestry combination are used as reference and specific methods are put forwant for Mabian county to building Internet based forestry.
In this paper,a description is given of the current information establishment situation of forest industry in Mabian county,and analysis is made of its problems in the information construction.Successful domestic cases of Internet and forestry combination are used as reference and specific methods are put forwant for Mabian county to building Internet based forestry.
2016, 37(3): 131-133.
doi: 10.16779/j.cnki.1003-5508.2016.03.028
Abstract:
The wild ornamental plants in Fushun county were investgated by the means of Biological Survey Research.The results showed that there were 586 kinds of wild plants belonging 128 families,including 34.4% of woody plants,7.2% of liana and 58.2% of herbs.The quantitative assessment of wild ornamental plants were conducted by psychology and physical methods,then a description was made of high score of trees,grasses,shrubs and vines in order to provide a new resource for landscaping work.
The wild ornamental plants in Fushun county were investgated by the means of Biological Survey Research.The results showed that there were 586 kinds of wild plants belonging 128 families,including 34.4% of woody plants,7.2% of liana and 58.2% of herbs.The quantitative assessment of wild ornamental plants were conducted by psychology and physical methods,then a description was made of high score of trees,grasses,shrubs and vines in order to provide a new resource for landscaping work.
2016, 37(3): 134-137.
doi: 10.16779/j.cnki.1003-5508.2016.03.029
Abstract:
The rural tourism in Deyang city originated in the nineties of the last century.After undergoing the initial development,development advantages,seismic decline,and the recent high incidence process,it has gradually become an important part of the way by which farmers build up the family fortunes.The rural tourism industry in Deyang city has gradually become an important industry in the development of rural economy.At the end of 2015,Deyang city achieved the total tourism income of 12 billion 64 million yuan,an increase of 30.26%,domestic and foreign tourists reached 18 million 439 thousand and 300 pasons,an increase of 6.24%.In rural tourism,12 million 538 thousand and 700 tourists,tourists accounted for 68% of the total;rural tourism revenue was 5 billion 67 million yuan,occupying 42% of total tourism income.But the rural tourism development in Deyang City still had some problems to be solved.Through in-depth investigation and analysis of the existing problems of the development of rural tourism in Deyang City,some countermeasures and suggestions were put forward for promoting the development of rural tourism in Deyang City.
The rural tourism in Deyang city originated in the nineties of the last century.After undergoing the initial development,development advantages,seismic decline,and the recent high incidence process,it has gradually become an important part of the way by which farmers build up the family fortunes.The rural tourism industry in Deyang city has gradually become an important industry in the development of rural economy.At the end of 2015,Deyang city achieved the total tourism income of 12 billion 64 million yuan,an increase of 30.26%,domestic and foreign tourists reached 18 million 439 thousand and 300 pasons,an increase of 6.24%.In rural tourism,12 million 538 thousand and 700 tourists,tourists accounted for 68% of the total;rural tourism revenue was 5 billion 67 million yuan,occupying 42% of total tourism income.But the rural tourism development in Deyang City still had some problems to be solved.Through in-depth investigation and analysis of the existing problems of the development of rural tourism in Deyang City,some countermeasures and suggestions were put forward for promoting the development of rural tourism in Deyang City.
2016, 37(3): 138-139.
doi: 10.16779/j.cnki.1003-5508.2016.03.030
Abstract:
For increasing the cultivation output of Zanthoxylum armatum cv.Jiuyeqing,researches were conducted into effects of the treatments of different seed harvest time (seed maturity) and degreasing measures on the germination rate and seedling rate.The results showed that the best treatment for improving germination rate and seedling rate of Zanthoxylum armatum cv.Jiuyeqing was to soak seeds in 2.5% NaOH for 12 hours after threshing,and then soak them in clear water for 24 hours,their germination rate and germinating potential would reach 76.13% and 71.77% respectively.The best havest time was for ten days after White Dew,the seedling-forming rate was 66.23%.
For increasing the cultivation output of Zanthoxylum armatum cv.Jiuyeqing,researches were conducted into effects of the treatments of different seed harvest time (seed maturity) and degreasing measures on the germination rate and seedling rate.The results showed that the best treatment for improving germination rate and seedling rate of Zanthoxylum armatum cv.Jiuyeqing was to soak seeds in 2.5% NaOH for 12 hours after threshing,and then soak them in clear water for 24 hours,their germination rate and germinating potential would reach 76.13% and 71.77% respectively.The best havest time was for ten days after White Dew,the seedling-forming rate was 66.23%.
2016, 37(3): 140-141,65.
doi: 10.16779/j.cnki.1003-5508.2016.03.031
Abstract:
2016, 37(3): 142-144.
doi: 10.16779/j.cnki.1003-5508.2016.03.032
Abstract:
2016, 37(3): 145-148.
doi: 10.16779/j.cnki.1003-5508.2016.03.033
Abstract:
Kiwifruit is widely cultivated in Wenchuan and Songpan County of Aba Prefecture due to its abundant vitamins and other nutrients.According to the diseases and insect pest problems in production,and on the basis of investigation and study,authors summarized the occurrence and damage of such main diseases and insect pests as root rot disease,ulcer disease,brown spot disease,scale insects shell,beetle and weevil and leafhopper,and described their control rnethods.
Kiwifruit is widely cultivated in Wenchuan and Songpan County of Aba Prefecture due to its abundant vitamins and other nutrients.According to the diseases and insect pest problems in production,and on the basis of investigation and study,authors summarized the occurrence and damage of such main diseases and insect pests as root rot disease,ulcer disease,brown spot disease,scale insects shell,beetle and weevil and leafhopper,and described their control rnethods.
