2016 Vol. 37 Issue 4
2016 Vol. 37, No. 4
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2016, 37(4): 1-7.
doi: 10.16779/j.cnki.1003-5508.2016.04.001
Abstract:
In this paper,selecting the Zagunao River arid valley areas in the upper reaches of the Minjiang River 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 topography,soil,water,vegetation in the region river valley,slope and slope of habitat,respectively,the classification work was done in order to provide the basis for the area of habitat quality evaluation,as well as artificial afforestation tree species selection and afforestation patterns,and a scientific basis and theoretical guidance.Besides,this work but also provided reference for artificial vegetation restoration in the similar difficult site conditions.
In this paper,selecting the Zagunao River arid valley areas in the upper reaches of the Minjiang River 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 topography,soil,water,vegetation in the region river valley,slope and slope of habitat,respectively,the classification work was done in order to provide the basis for the area of habitat quality evaluation,as well as artificial afforestation tree species selection and afforestation patterns,and a scientific basis and theoretical guidance.Besides,this work but also provided reference for artificial vegetation restoration in the similar difficult site conditions.
2016, 37(4): 8-13.
doi: 10.16779/j.cnki.1003-5508.2016.04.002
Abstract:
In order to explore the forest composition and structure,tree carbon stock and allocation,researches were conducted on Larix kaempferi plantation,Phellodendron amurense plantation,Pinus armandii plantation,and natural second forests dominated by Juglans cathayensis,and Quercus variabilis and Fagus spp.,which were located in the middle mountain of Laohegou Nature Reserve within the Pingwu County,northwestern Sichuan.The results showed that the composition and structure varied largely in different forests.The carbon stock of 5 kinds of forests varied from 96.88±2.20 MgC per hectare to 282.61±7.94 MgC per hectare,the most of the carbon was stocked in the aboveground part of forests.The carbon stock in the different tissues in different forests or plantations varied significantly.For the in situ carbon stock in the middle mountain of Laohegou Nature Reserve,the first was the natural forest dominated by Juglans cathayensis,and the second was the mixed forest dominated by Quercus variabilis and Fagus spp.
In order to explore the forest composition and structure,tree carbon stock and allocation,researches were conducted on Larix kaempferi plantation,Phellodendron amurense plantation,Pinus armandii plantation,and natural second forests dominated by Juglans cathayensis,and Quercus variabilis and Fagus spp.,which were located in the middle mountain of Laohegou Nature Reserve within the Pingwu County,northwestern Sichuan.The results showed that the composition and structure varied largely in different forests.The carbon stock of 5 kinds of forests varied from 96.88±2.20 MgC per hectare to 282.61±7.94 MgC per hectare,the most of the carbon was stocked in the aboveground part of forests.The carbon stock in the different tissues in different forests or plantations varied significantly.For the in situ carbon stock in the middle mountain of Laohegou Nature Reserve,the first was the natural forest dominated by Juglans cathayensis,and the second was the mixed forest dominated by Quercus variabilis and Fagus spp.
2016, 37(4): 14-18.
doi: 10.16779/j.cnki.1003-5508.2016.04.003
Abstract:
2016, 37(4): 19-23.
doi: 10.16779/j.cnki.1003-5508.2016.04.004
Abstract:
In this paper,deep investigations and studies were made of the present status of forestry industry development in Tongchuan region of Dazhou city,and analysis was made of problems existing in the development of modern forestry industry in Tongchuan region.On this basis,strategy and suggestions were proposed for the development of modern forestry industry in Tongchuan region.In guide of modern forestry theory,it is important to rearrange thoughts and to promote harmonous development between conservation and utility of forests.
In this paper,deep investigations and studies were made of the present status of forestry industry development in Tongchuan region of Dazhou city,and analysis was made of problems existing in the development of modern forestry industry in Tongchuan region.On this basis,strategy and suggestions were proposed for the development of modern forestry industry in Tongchuan region.In guide of modern forestry theory,it is important to rearrange thoughts and to promote harmonous development between conservation and utility of forests.
2016, 37(4): 24-27.
doi: 10.16779/j.cnki.1003-5508.2016.04.005
Abstract:
To know the changes of different developmental stages of plantation biomass and carbon storage of Toona sinensis in Sichuan Province,investigations were made on the biomass and carbon stock of artificial toona forest.The results showed that 3 years ~24 years old Chinese toona tree layer biomass variation range varied from 1.38 per hectare to 130.89 per hectare,the variation range of carbon storage was from 0.68 per hectare to 64.62 per hectare,the biological amount and carbon storage dynamics change fluctuations of 1 year ~20 years old toona trees were larger,20 years old toona trees had a trend of rapid growth,the biomass and carbon storage reached the maximum in the mature period of Toona sinensis;Simulation was done to build Chinese toona tree height,DBH and individual tree biomass model (X as age):H=-0.26X2+1.4338X+0.80936,D=0.01057X2+1.5977X-0.06318,W=0.00315X2+0.03525X+0.09871,and their fitting correlation coefficients respectively 0.8313,0.9788 and 0.9971.Toona sinensis biomass and carbon storage dynamics change process were divided into three stages.At the age of 1 to 10 Toona sinensis juvenile forest' biomass and carbon stock slowly rose,at the age of 11 to 20 forest biological amount and carbon storage was in a medium speed rise,at the age of 21 to 30,mature forest biomass and carbon storage was in the period of rapid rise.Therefore,this paper put forward reasonable stand density carbon sink function of Toona sinensis plantation,Toona sinensis in the juvenile stage in accordance with the initial planting density of 1 666 trees per hectare should be cultivated,at the toona fast-growing stage the thinning density should concerved at 405 trees per hectare,in Toona sinensis mature period,the thinning density preservation at 240 trees per hectare was appropriate,aiming to provide the basis for the data analysis of the research for the function of carbon sequestration and forest plantations community management.
To know the changes of different developmental stages of plantation biomass and carbon storage of Toona sinensis in Sichuan Province,investigations were made on the biomass and carbon stock of artificial toona forest.The results showed that 3 years ~24 years old Chinese toona tree layer biomass variation range varied from 1.38 per hectare to 130.89 per hectare,the variation range of carbon storage was from 0.68 per hectare to 64.62 per hectare,the biological amount and carbon storage dynamics change fluctuations of 1 year ~20 years old toona trees were larger,20 years old toona trees had a trend of rapid growth,the biomass and carbon storage reached the maximum in the mature period of Toona sinensis;Simulation was done to build Chinese toona tree height,DBH and individual tree biomass model (X as age):H=-0.26X2+1.4338X+0.80936,D=0.01057X2+1.5977X-0.06318,W=0.00315X2+0.03525X+0.09871,and their fitting correlation coefficients respectively 0.8313,0.9788 and 0.9971.Toona sinensis biomass and carbon storage dynamics change process were divided into three stages.At the age of 1 to 10 Toona sinensis juvenile forest' biomass and carbon stock slowly rose,at the age of 11 to 20 forest biological amount and carbon storage was in a medium speed rise,at the age of 21 to 30,mature forest biomass and carbon storage was in the period of rapid rise.Therefore,this paper put forward reasonable stand density carbon sink function of Toona sinensis plantation,Toona sinensis in the juvenile stage in accordance with the initial planting density of 1 666 trees per hectare should be cultivated,at the toona fast-growing stage the thinning density should concerved at 405 trees per hectare,in Toona sinensis mature period,the thinning density preservation at 240 trees per hectare was appropriate,aiming to provide the basis for the data analysis of the research for the function of carbon sequestration and forest plantations community management.
2016, 37(4): 28-33.
doi: 10.16779/j.cnki.1003-5508.2016.04.006
Abstract:
2016, 37(4): 34-38,92.
doi: 10.16779/j.cnki.1003-5508.2016.04.007
Abstract:
In this paper,the studied region is located in the northeast of Sichuan Mt.Qinba,by the data from practical investigations and Forest Management Inventory(FMI),colorful leaf forest landscape in Mt.Guangwu can be divided into 13 types and quantitative analysis is made by using ArcGIS technology and the landscape analysis program FRAGSTATS.The results have shown that the whole colorful leaf forest landscape has basic stability,abundance degree and aggregation.In all types of colorful leaf forest landscape,the Betulaceae has the largest area,and the degree of its fragmentation is the lowest,followed by the Fagus and the Oakery.And yet many small areas of walnut,magnolia officinalis and so on display the highest degree of fragmentation.The difference in indexes of other types is not significant,and the degree of fragmentation of these types is in the medium range.These results could provide a significant basis for exploitation,utilization and management of colorful leaf landscape forest resources in Mt.Guangwu.
In this paper,the studied region is located in the northeast of Sichuan Mt.Qinba,by the data from practical investigations and Forest Management Inventory(FMI),colorful leaf forest landscape in Mt.Guangwu can be divided into 13 types and quantitative analysis is made by using ArcGIS technology and the landscape analysis program FRAGSTATS.The results have shown that the whole colorful leaf forest landscape has basic stability,abundance degree and aggregation.In all types of colorful leaf forest landscape,the Betulaceae has the largest area,and the degree of its fragmentation is the lowest,followed by the Fagus and the Oakery.And yet many small areas of walnut,magnolia officinalis and so on display the highest degree of fragmentation.The difference in indexes of other types is not significant,and the degree of fragmentation of these types is in the medium range.These results could provide a significant basis for exploitation,utilization and management of colorful leaf landscape forest resources in Mt.Guangwu.
2016, 37(4): 39-42.
doi: 10.16779/j.cnki.1003-5508.2016.04.008
Abstract:
The ecological footprint is one of the most important methods to evaluate the sustainability of the region development.The ecological footprint and ecological capacity were calculated based on the ecological footprint theory and computational model for mountain areas in Southwest Sichuan during 2000 to 2012.mountain areas in Southwest Sichuan included Panzhihua City,Liangshanyizuzizhou city (except Muli county),and Yaan city (Hanyuan county and Shimian county).The results showed that the ecological footprint per capita increased from 0.907 hm2 in 2000 to 1.9247 hm2 in 2012,and the ecological capacity per capita reduced from 2.1236 hm2 in 2000 to 1.788 hm2 in 2012.Per capital ecologica deficit increased greatly,which reflected that the regional ecosystem was under great pressure and the regional ecological sustainable development of mountain areas in Southwest Sichuan was difficult.In order to achieve the goals of sustainable development strategy in Mountain areas in Southwest Sichuan,strategies were put forward in this paper,including optimizing life style and production mode of the people,controlling the size of population,and adjusting the structure of industry.
The ecological footprint is one of the most important methods to evaluate the sustainability of the region development.The ecological footprint and ecological capacity were calculated based on the ecological footprint theory and computational model for mountain areas in Southwest Sichuan during 2000 to 2012.mountain areas in Southwest Sichuan included Panzhihua City,Liangshanyizuzizhou city (except Muli county),and Yaan city (Hanyuan county and Shimian county).The results showed that the ecological footprint per capita increased from 0.907 hm2 in 2000 to 1.9247 hm2 in 2012,and the ecological capacity per capita reduced from 2.1236 hm2 in 2000 to 1.788 hm2 in 2012.Per capital ecologica deficit increased greatly,which reflected that the regional ecosystem was under great pressure and the regional ecological sustainable development of mountain areas in Southwest Sichuan was difficult.In order to achieve the goals of sustainable development strategy in Mountain areas in Southwest Sichuan,strategies were put forward in this paper,including optimizing life style and production mode of the people,controlling the size of population,and adjusting the structure of industry.
2016, 37(4): 43-46.
doi: 10.16779/j.cnki.1003-5508.2016.04.009
Abstract:
2016, 37(4): 47-51.
doi: 10.16779/j.cnki.1003-5508.2016.04.010
Abstract:
This paper focuses on the color-leaf forest in the Guangwu mountain and evaluate its tourism ecosystem service values.The results have shown that the total value of forest landscape of the study area is 13.12×108 Yuan and the total value of color-leaf forest landscape is 10.97×108 Yuan.The values of the different functions are in order of carbon fixation and oxygen release > forest recreation > water conservation > soil conservation > biodiversity conservation > forestry byproducts > air cleaning.Both the evaluation of tourism ecosystem service values and forest recreation value are lower than other ecosystems with the same type or in the same region.
This paper focuses on the color-leaf forest in the Guangwu mountain and evaluate its tourism ecosystem service values.The results have shown that the total value of forest landscape of the study area is 13.12×108 Yuan and the total value of color-leaf forest landscape is 10.97×108 Yuan.The values of the different functions are in order of carbon fixation and oxygen release > forest recreation > water conservation > soil conservation > biodiversity conservation > forestry byproducts > air cleaning.Both the evaluation of tourism ecosystem service values and forest recreation value are lower than other ecosystems with the same type or in the same region.
2016, 37(4): 52-56.
doi: 10.16779/j.cnki.1003-5508.2016.04.011
Abstract:
June and October in 2008, April and May in 2006 and May and June in 2014,investigations were made on the basic resources in Sichuan Fairy Mountain Provincial Nature Reserve.A summary of these collections showed that there were 56 species of mammals in this reserve.An investigation of the biogeographic origin of this mammal fauna indicated that 25 species belonged to the Oriental realm,28 species belonged to Palearctic realm and 3 species are widely distributed.Of all the total species in this area, 24 species were identified as national protected rare mammals,5 species of the first grade protected rare mammals and 19 species of the second grade protected rare mammals.There were 25 species endemic to China and 5 species such as Moschus berezovskii,M.chrysogaster,Eothenomys miletus,Neodon fuscus and Crocidura shantongensis were worth paying attention.
June and October in 2008, April and May in 2006 and May and June in 2014,investigations were made on the basic resources in Sichuan Fairy Mountain Provincial Nature Reserve.A summary of these collections showed that there were 56 species of mammals in this reserve.An investigation of the biogeographic origin of this mammal fauna indicated that 25 species belonged to the Oriental realm,28 species belonged to Palearctic realm and 3 species are widely distributed.Of all the total species in this area, 24 species were identified as national protected rare mammals,5 species of the first grade protected rare mammals and 19 species of the second grade protected rare mammals.There were 25 species endemic to China and 5 species such as Moschus berezovskii,M.chrysogaster,Eothenomys miletus,Neodon fuscus and Crocidura shantongensis were worth paying attention.
2016, 37(4): 57-60.
doi: 10.16779/j.cnki.1003-5508.2016.04.012
Abstract:
Based on the statistics and analysis of the seed flora in Huolongou Nature Reserve,the results have indicated that its floristic elements are complex and its types are rich.There are 82 families,302 genera,649 species in Huolonggou Nature Reserve,among which gymnosperms have 3 families,6 genera,16 species and angiosperms have 79 families,296 genera,633 species.The geographical element are complex,and the range type are abundant.The dominant families and genera are obvious.The origin of the seed flora is ancient.The endemic phenomena are rich.
Based on the statistics and analysis of the seed flora in Huolongou Nature Reserve,the results have indicated that its floristic elements are complex and its types are rich.There are 82 families,302 genera,649 species in Huolonggou Nature Reserve,among which gymnosperms have 3 families,6 genera,16 species and angiosperms have 79 families,296 genera,633 species.The geographical element are complex,and the range type are abundant.The dominant families and genera are obvious.The origin of the seed flora is ancient.The endemic phenomena are rich.
2016, 37(4): 61-64.
doi: 10.16779/j.cnki.1003-5508.2016.04.013
Abstract:
By using the data of forest resource planning and design inventory in 1995 and 2015,analysis was made of the dynamic change of forest resources in Yucheng District in recent 20 years.The results showed that the area of forest land increased from 546 000 hm2 in 1995 to 769 000 hm2 in 2015,increasing by 223 000 hm2.Forest coverage rate increased from 43.50% to 62.46%,increasing by 19.46%.Living tree volume increased from 21.87 million m3 in 1995 to 525.06 million m3 in 2015,increasing 306.3 million m3.Forest productivity increased from 36.97 m3·hm-2 to 67.99 m3·hm-2,increasing by 31.02 m3·hm-2.Natural Forest Protection Project and Defarming-and-reafforestation Project increased the area,volume and cover rate of the forest.
By using the data of forest resource planning and design inventory in 1995 and 2015,analysis was made of the dynamic change of forest resources in Yucheng District in recent 20 years.The results showed that the area of forest land increased from 546 000 hm2 in 1995 to 769 000 hm2 in 2015,increasing by 223 000 hm2.Forest coverage rate increased from 43.50% to 62.46%,increasing by 19.46%.Living tree volume increased from 21.87 million m3 in 1995 to 525.06 million m3 in 2015,increasing 306.3 million m3.Forest productivity increased from 36.97 m3·hm-2 to 67.99 m3·hm-2,increasing by 31.02 m3·hm-2.Natural Forest Protection Project and Defarming-and-reafforestation Project increased the area,volume and cover rate of the forest.
2016, 37(4): 65-68.
doi: 10.16779/j.cnki.1003-5508.2016.04.014
Abstract:
The plant species and biomass were investigated in desertification land in Rangtang county of Northwest Sichuan.The results showed that 10 families and 24 species of plants were found in control grassland species,12 families and 23 species of plants were found in desertification land,12 families and 15 species of herbal plants and 4 families and 5 shrub species were found in exposed sandy land,14 families and 19 species were found in fixed sandy land.Along with the severity of desertification,the number of species reduced,and families increased.Besides,total biomass,above-ground and below-ground biomass firstly increased,then decreased.The order of the Shannon-Wiener diversity and the Margalef richness index was followed as:control land > desertification land > fixed sandy land > exposed sandy land (herb) > exposed sandy land (shrub).The order of uniformity index was exposed sand (herb) > control land > fixed sandy land > exposed Sandy land (shrub) > desertification land.
The plant species and biomass were investigated in desertification land in Rangtang county of Northwest Sichuan.The results showed that 10 families and 24 species of plants were found in control grassland species,12 families and 23 species of plants were found in desertification land,12 families and 15 species of herbal plants and 4 families and 5 shrub species were found in exposed sandy land,14 families and 19 species were found in fixed sandy land.Along with the severity of desertification,the number of species reduced,and families increased.Besides,total biomass,above-ground and below-ground biomass firstly increased,then decreased.The order of the Shannon-Wiener diversity and the Margalef richness index was followed as:control land > desertification land > fixed sandy land > exposed sandy land (herb) > exposed sandy land (shrub).The order of uniformity index was exposed sand (herb) > control land > fixed sandy land > exposed Sandy land (shrub) > desertification land.
2016, 37(4): 69-73.
doi: 10.16779/j.cnki.1003-5508.2016.04.015
Abstract:
In this paper,on the basis of describing the problem to be solved in ecological monitoring in the National Wetland Park.An analysis was made of the index system and technological method of National Wetland Park ecological monitor,and at the same time,taking Lalongcuo National Wetland Park,Baiyu,Sichuan as an example,researches were conducted on the ecological environment condition monitoring and its impact on wetland condition factors for the protection of the wetland park's ecological environment so as to provide scientific methods for the park ecological monitoring,and also provide a reference for other wetland parks in ecological monitoring.
In this paper,on the basis of describing the problem to be solved in ecological monitoring in the National Wetland Park.An analysis was made of the index system and technological method of National Wetland Park ecological monitor,and at the same time,taking Lalongcuo National Wetland Park,Baiyu,Sichuan as an example,researches were conducted on the ecological environment condition monitoring and its impact on wetland condition factors for the protection of the wetland park's ecological environment so as to provide scientific methods for the park ecological monitoring,and also provide a reference for other wetland parks in ecological monitoring.
2016, 37(4): 74-78.
doi: 10.16779/j.cnki.1003-5508.2016.04.016
Abstract:
Studies were made of tissue culture and fast propagation system of Eucalyptus saligna by taking stem segments with auxiliary buds from superior plants' shooting as explants.The results showed that cutting the superior plants at the trunk base could get the best effect of promoting sprouting with germination rate of 100% and average number of 38 shoots.Late March was the best time to obtain explants and semi-lignified shoots were the best choice.The optimal medium for primary induction was MS+6-BA0.5 mg·L-1+NAA0.05 mg·L-1 with a germination rate of 66.67%.The optimal medium for subculture was modified MS+6-BA1.0 mg·L-1+IBA0.02 mg·L-1+NAA0.05 mg·L-1 with a multiplication coefficient of 5.44.The optimal medium for rooting was modified MS+6-BA0.01 mg·L-1 +IBA0.5 mg·L-1 +NAA0.2 mg·L-1 with a rooting rate of 95% and the average root number of above 9.
Studies were made of tissue culture and fast propagation system of Eucalyptus saligna by taking stem segments with auxiliary buds from superior plants' shooting as explants.The results showed that cutting the superior plants at the trunk base could get the best effect of promoting sprouting with germination rate of 100% and average number of 38 shoots.Late March was the best time to obtain explants and semi-lignified shoots were the best choice.The optimal medium for primary induction was MS+6-BA0.5 mg·L-1+NAA0.05 mg·L-1 with a germination rate of 66.67%.The optimal medium for subculture was modified MS+6-BA1.0 mg·L-1+IBA0.02 mg·L-1+NAA0.05 mg·L-1 with a multiplication coefficient of 5.44.The optimal medium for rooting was modified MS+6-BA0.01 mg·L-1 +IBA0.5 mg·L-1 +NAA0.2 mg·L-1 with a rooting rate of 95% and the average root number of above 9.
2016, 37(4): 79-83.
doi: 10.16779/j.cnki.1003-5508.2016.04.017
Abstract:
In order to explore the influences of the different digestion methods on measuring the content of heavy metal in soil,in this experiment,two different digestion methods,the wet-digestion and high pressure sealed digestion methods,were used to measure the content of Cd,Pb,Cu and Cr in the standard soil of Sichuan Basin by adopting atomic absorption spectrometry.The result showed that (1) the wet digestion and the high pressure sealed digestion methods were able to digest Cd,Pb,Cu and Cr.The sample detection was all below 0.05 μg·l-1; (2) The effect of the high pressure sealed digestion methods was better than that of the wet digestion method,and the relative standard deviation or accuracy of high pressure hydrothermal decomposition was more trustful than that of the wet digestion; (3) the high pressure sealed digestion method was effectively able to control the sample loss and more simple,time-saving,even to reduce the using of acid and environmental pollution.Thus the high pressure hydrothermal decomposition method would be used as a practicable method of analyzing the content of heavy metal in soil.
In order to explore the influences of the different digestion methods on measuring the content of heavy metal in soil,in this experiment,two different digestion methods,the wet-digestion and high pressure sealed digestion methods,were used to measure the content of Cd,Pb,Cu and Cr in the standard soil of Sichuan Basin by adopting atomic absorption spectrometry.The result showed that (1) the wet digestion and the high pressure sealed digestion methods were able to digest Cd,Pb,Cu and Cr.The sample detection was all below 0.05 μg·l-1; (2) The effect of the high pressure sealed digestion methods was better than that of the wet digestion method,and the relative standard deviation or accuracy of high pressure hydrothermal decomposition was more trustful than that of the wet digestion; (3) the high pressure sealed digestion method was effectively able to control the sample loss and more simple,time-saving,even to reduce the using of acid and environmental pollution.Thus the high pressure hydrothermal decomposition method would be used as a practicable method of analyzing the content of heavy metal in soil.
2016, 37(4): 84-87,102.
doi: 10.16779/j.cnki.1003-5508.2016.04.018
Abstract:
Plant growth requires a certain amount of trace elements.An experiment was designed in nursery in order to test the effects of Zn,Mn,and B on seedling growth of Taiwania flousiana. The results showed that these three trace elements had significant effects on the height,basal diameter,branch number,and lateral root of 2-year old seedlings under the same fertilization.The best performance of seedling growth happened in the treatment of A1B2C2,where 0.03% MnSO4 and 0.03% H3BO3 were sprayed without ZnSO4.The growth indices of 2-year old seedlings reached average height of 32.5 cm,basal diameter of 3.91 mm,12.9 branches,and 7.3 lateral roots.
Plant growth requires a certain amount of trace elements.An experiment was designed in nursery in order to test the effects of Zn,Mn,and B on seedling growth of Taiwania flousiana. The results showed that these three trace elements had significant effects on the height,basal diameter,branch number,and lateral root of 2-year old seedlings under the same fertilization.The best performance of seedling growth happened in the treatment of A1B2C2,where 0.03% MnSO4 and 0.03% H3BO3 were sprayed without ZnSO4.The growth indices of 2-year old seedlings reached average height of 32.5 cm,basal diameter of 3.91 mm,12.9 branches,and 7.3 lateral roots.
2016, 37(4): 88-92.
doi: 10.16779/j.cnki.1003-5508.2016.04.019
Abstract:
In order to improve the grafting survival rate and qualified seedling percentage of Juglans regia,the grafting survival rate,new shoot increments and cost were compared when four kinds of grafting methods were adopted.The results showed that:(1)The optimum grafting seedling period of Juglans regia in the hilly areas of central Sichuan was between before germination on early March and sprouted leaves,the grafting time was properly in advance or delayed according to the phenophase.(2) The methods of seedling grafting and phloem bark grafting were suitable to carry out in the experimental field in spring,grafting was sooner rather than later in the same period,seedling growth had a significant difference in different scions-tock combination.(3) Phloem bark grafting was the most suitable grafting method in climate zone similar to the experimental field and had better wound healing,high survival rate,growth and qualified seedling percentage.Seedling grafting took the second place,this method worked fast and had short cycle and low cost,but lower increment and qualified seedling percentage.Patch budding and summer budding were not suitable for popularization and application in the area.
In order to improve the grafting survival rate and qualified seedling percentage of Juglans regia,the grafting survival rate,new shoot increments and cost were compared when four kinds of grafting methods were adopted.The results showed that:(1)The optimum grafting seedling period of Juglans regia in the hilly areas of central Sichuan was between before germination on early March and sprouted leaves,the grafting time was properly in advance or delayed according to the phenophase.(2) The methods of seedling grafting and phloem bark grafting were suitable to carry out in the experimental field in spring,grafting was sooner rather than later in the same period,seedling growth had a significant difference in different scions-tock combination.(3) Phloem bark grafting was the most suitable grafting method in climate zone similar to the experimental field and had better wound healing,high survival rate,growth and qualified seedling percentage.Seedling grafting took the second place,this method worked fast and had short cycle and low cost,but lower increment and qualified seedling percentage.Patch budding and summer budding were not suitable for popularization and application in the area.
2016, 37(4): 93-96.
doi: 10.16779/j.cnki.1003-5508.2016.04.020
Abstract:
In this paper,studies were made of the yield and adsorption properties of the actived carbon and the process of preparing activated carbon by using agricultural waste straw and the water vapor activation method.Discussion was made on according to the carbonization temperature,carbonization time,activation temperature and activation time,thus obtaining the optimum process conditions:carbonization temperature of 450℃,6 hours of carbonization time,850℃ of activation temperature,and 3 hours of activation time.The methylene blue adsorption value of activated carbon was 180 mg·g-1 after the ash content of postprocessing.The basic energy could reach the standard of activated carbon for water purification,and it had a great prospect of popularization and application.
In this paper,studies were made of the yield and adsorption properties of the actived carbon and the process of preparing activated carbon by using agricultural waste straw and the water vapor activation method.Discussion was made on according to the carbonization temperature,carbonization time,activation temperature and activation time,thus obtaining the optimum process conditions:carbonization temperature of 450℃,6 hours of carbonization time,850℃ of activation temperature,and 3 hours of activation time.The methylene blue adsorption value of activated carbon was 180 mg·g-1 after the ash content of postprocessing.The basic energy could reach the standard of activated carbon for water purification,and it had a great prospect of popularization and application.
2016, 37(4): 97-99.
doi: 10.16779/j.cnki.1003-5508.2016.04.021
Abstract:
In order to protect the resources of wild Cystoathyrium chinense,and explore the spore propagation technique,the experiment was conducted to observe the occurrence time and quantity of prothallium and sporophyte in 4 kinds medium(mixed media,sterile water,sterile habitat soil,and non-sterilized habitat soil) and 4 temperatures(10℃,15℃,20℃ and 25℃) by artificial controlling of light,water and other ecological factors.The result indicated that Cystoathyrium chinense spore germination was very strict to the requirement of the medium.The optimal medium for spore germination was non-sterilized habitat soil,while the quantity of prothallium was very few,and had longer germination time in others medium.This might be related to soil microorganisms and enzyme system.The most suitable temperature range was 15℃~20℃,especially at 20℃.The too high or too low temperature would inhibit the spore germination.It might be due to different structural characteristics of spores which had different requirements of light.
In order to protect the resources of wild Cystoathyrium chinense,and explore the spore propagation technique,the experiment was conducted to observe the occurrence time and quantity of prothallium and sporophyte in 4 kinds medium(mixed media,sterile water,sterile habitat soil,and non-sterilized habitat soil) and 4 temperatures(10℃,15℃,20℃ and 25℃) by artificial controlling of light,water and other ecological factors.The result indicated that Cystoathyrium chinense spore germination was very strict to the requirement of the medium.The optimal medium for spore germination was non-sterilized habitat soil,while the quantity of prothallium was very few,and had longer germination time in others medium.This might be related to soil microorganisms and enzyme system.The most suitable temperature range was 15℃~20℃,especially at 20℃.The too high or too low temperature would inhibit the spore germination.It might be due to different structural characteristics of spores which had different requirements of light.
2016, 37(4): 100-102.
doi: 10.16779/j.cnki.1003-5508.2016.04.022
Abstract:
The essential oil content was analyzed in the branches and leaves of Cinnamomum petropilum in different seasons,and comprehensive evaluation were made on the change of unit production of safrole in different seasons.The results showed that August to November was the best harvest season for the branches and leaves of Cinnamomum petropilum,however,the other season harvest would reduce its economic value,and was also not conducive to the sustainable development of Cinnamomum petrophilum industry as well.
The essential oil content was analyzed in the branches and leaves of Cinnamomum petropilum in different seasons,and comprehensive evaluation were made on the change of unit production of safrole in different seasons.The results showed that August to November was the best harvest season for the branches and leaves of Cinnamomum petropilum,however,the other season harvest would reduce its economic value,and was also not conducive to the sustainable development of Cinnamomum petrophilum industry as well.
2016, 37(4): 103-105.
doi: 10.16779/j.cnki.1003-5508.2016.04.023
Abstract:
The fruit of Zanthoxylum armatum,as one of the most important condiments in China,is ardently favored by more and more consumers.In this paper,researches were conducted on the pruning,the number and length of fruit branches,cultivation patterns in Guang'an.The results indicated that the production of the pruning way increased by 33% than that of the traditional way,the efficiency of fruit-picking by 50%,meanwhile,the number of fruit branches between 50 and 70 was better than other ways.The length of fruit branches between 80cm and 100cm was the better choice.The cultivation pattern of Z.armatum+Ipomoea batatas had the highest preserving rate of Z.armatum,the cultivation pattern of Z.armatum+ weeds took the second place,and the cultivation pattern of pure Z.armatum was the worst.
The fruit of Zanthoxylum armatum,as one of the most important condiments in China,is ardently favored by more and more consumers.In this paper,researches were conducted on the pruning,the number and length of fruit branches,cultivation patterns in Guang'an.The results indicated that the production of the pruning way increased by 33% than that of the traditional way,the efficiency of fruit-picking by 50%,meanwhile,the number of fruit branches between 50 and 70 was better than other ways.The length of fruit branches between 80cm and 100cm was the better choice.The cultivation pattern of Z.armatum+Ipomoea batatas had the highest preserving rate of Z.armatum,the cultivation pattern of Z.armatum+ weeds took the second place,and the cultivation pattern of pure Z.armatum was the worst.
2016, 37(4): 106-109.
doi: 10.16779/j.cnki.1003-5508.2016.04.024
Abstract:
(1) The dry valley area of the Bailong River is a typical ecological fragile area.Its ecological environment degradation is serious,and its vegetation restoration is difficult.(2) Through the analysis of the current situation of the dry valley in the Bailong River,the ecological composition,structure and spatial pattern of the area were summarized.It is found that there are still many deficiencies in the protection of vegetation and regional characteristics,and it is believed that the future research work should be strengthened in many aspects,such as degradation mechanism,human disturbance,fragile ecological environment and so on.(3) Analysis is made of the causes of degradation,aiming to find out the adaptation of the local tree species and development models and to provide reference for vegetation restoration and ecological environment research in the Bailong River dry valley.
(1) The dry valley area of the Bailong River is a typical ecological fragile area.Its ecological environment degradation is serious,and its vegetation restoration is difficult.(2) Through the analysis of the current situation of the dry valley in the Bailong River,the ecological composition,structure and spatial pattern of the area were summarized.It is found that there are still many deficiencies in the protection of vegetation and regional characteristics,and it is believed that the future research work should be strengthened in many aspects,such as degradation mechanism,human disturbance,fragile ecological environment and so on.(3) Analysis is made of the causes of degradation,aiming to find out the adaptation of the local tree species and development models and to provide reference for vegetation restoration and ecological environment research in the Bailong River dry valley.
2016, 37(4): 110-113.
doi: 10.16779/j.cnki.1003-5508.2016.04.025
Abstract:
The tree species planning is an important and indispensable component of urban green planning and also is very important foundation work in the greening of the city.According to the concept and content of tree species planning,related rescarch results at home and abroad were summarized,aiming to provide a theovetical basis for further study and implementation of our trees species planning.
The tree species planning is an important and indispensable component of urban green planning and also is very important foundation work in the greening of the city.According to the concept and content of tree species planning,related rescarch results at home and abroad were summarized,aiming to provide a theovetical basis for further study and implementation of our trees species planning.
2016, 37(4): 114-118.
doi: 10.16779/j.cnki.1003-5508.2016.04.026
Abstract:
According to investigations,it is found that Songpan County is rich in wetland resources with a total area of 9 947.90 hm2.They can be divided into four types:permanent rivers, permanent freshwater lakes, shrub swamps and swamp meadows. Of the four types of wetlands, the area of swamp meadows is the largest area,that of permanent rivers is next, the area of permanent freshwater lakes and shrub marshes is relatively small. Inadequate laws and regulations, lack of advocacy and wetland protection funds have bronght a big problem to the wetland protection and management.Besides,in order to protect and use of the wetland resources in Songpan County, some suggeotions are proposed in this paper.
According to investigations,it is found that Songpan County is rich in wetland resources with a total area of 9 947.90 hm2.They can be divided into four types:permanent rivers, permanent freshwater lakes, shrub swamps and swamp meadows. Of the four types of wetlands, the area of swamp meadows is the largest area,that of permanent rivers is next, the area of permanent freshwater lakes and shrub marshes is relatively small. Inadequate laws and regulations, lack of advocacy and wetland protection funds have bronght a big problem to the wetland protection and management.Besides,in order to protect and use of the wetland resources in Songpan County, some suggeotions are proposed in this paper.
2016, 37(4): 119-120,13.
doi: 10.16779/j.cnki.1003-5508.2016.04.027
Abstract:
2016, 37(4): 121-123.
doi: 10.16779/j.cnki.1003-5508.2016.04.028
Abstract:
The ecological environment is the foundation of all life on the earth.In recent years, the development of economy and society has caused unprecedented destruction to the ecological environment. The problems of ecological environment have attracted great attention of national leadership. This paper deals with the subject, damage assessment, indemnification standard and supporting measures of Ecological Environmental Damage Compensation System. aiming to provide a possible theoretical reference for the perfection of the ecological environment compensation system.
The ecological environment is the foundation of all life on the earth.In recent years, the development of economy and society has caused unprecedented destruction to the ecological environment. The problems of ecological environment have attracted great attention of national leadership. This paper deals with the subject, damage assessment, indemnification standard and supporting measures of Ecological Environmental Damage Compensation System. aiming to provide a possible theoretical reference for the perfection of the ecological environment compensation system.
2016, 37(4): 124-126,132.
doi: 10.16779/j.cnki.1003-5508.2016.04.029
Abstract:
Using a questionnaire based survey,and being supplemented with discussion ways,special investigations were made on forest right circulation of rural farmers of five towns among 49 towns in Huili County,getting 125 valid survey data.The analysis of the survey data have shown that (1) Huili County forest land circulation area is large with long duration and low price;(2) Farmers have few knowledge of the forest rights transfer policy, supply and demand and price information;(3) The problems existing in the circulation of forest right are outstanding. In this paper,according to the existing problems and their causes, corresponding suggestions and countermeasures are put forward,aiming to provide a theoretical basis for the collective forest rights transfer in Huili County.
Using a questionnaire based survey,and being supplemented with discussion ways,special investigations were made on forest right circulation of rural farmers of five towns among 49 towns in Huili County,getting 125 valid survey data.The analysis of the survey data have shown that (1) Huili County forest land circulation area is large with long duration and low price;(2) Farmers have few knowledge of the forest rights transfer policy, supply and demand and price information;(3) The problems existing in the circulation of forest right are outstanding. In this paper,according to the existing problems and their causes, corresponding suggestions and countermeasures are put forward,aiming to provide a theoretical basis for the collective forest rights transfer in Huili County.
2016, 37(4): 127-129.
doi: 10.16779/j.cnki.1003-5508.2016.04.030
Abstract:
On the basis of deep investigation of the present situation of industry development and reforming of the low-yield Camellia oleifera forest in Rongxian county, Sichuan province,analysis was made of causes of low-yield, reforming measures, reforming effect,and then some problems and countermeasures were put forward, aiming to provide reference for developing Camellia oleifera industry and reforming low-yield forest in Rongxian county.
On the basis of deep investigation of the present situation of industry development and reforming of the low-yield Camellia oleifera forest in Rongxian county, Sichuan province,analysis was made of causes of low-yield, reforming measures, reforming effect,and then some problems and countermeasures were put forward, aiming to provide reference for developing Camellia oleifera industry and reforming low-yield forest in Rongxian county.
2016, 37(4): 130-132,136.
doi: 10.16779/j.cnki.1003-5508.2016.04.031
Abstract:
In order to utilize the woodland resource and the liquidation wastes of the Dendrocalamus latiflorus forest efficiently,the technology of intercroping the Dictyophora indusiata was sumarized under the Dendrocalamus latiflorus forest through 4 years of practice from the ingredients of Dictyophora indusiata substrate, selection of forest land,planting season and management.
In order to utilize the woodland resource and the liquidation wastes of the Dendrocalamus latiflorus forest efficiently,the technology of intercroping the Dictyophora indusiata was sumarized under the Dendrocalamus latiflorus forest through 4 years of practice from the ingredients of Dictyophora indusiata substrate, selection of forest land,planting season and management.
2016, 37(4): 133-136.
doi: 10.16779/j.cnki.1003-5508.2016.04.032
Abstract:
