2015 Vol. 36 Issue 4
2015 Vol. 36, No. 4
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2015, 36(4): 1-17.
doi: 10.16779/j.cnki.1003-5508.2015.04.001
Abstract:
Studies were made of the reproductive system of oil-used plants of Paeonia L. from their floral sydrome,pollination process,pollen pistill liveness,sexuality and fate of zigote. The results showed that 1) this genus of plants had a large amount of pollen,bigger corolla,no netar,protogeny and size dependency of mother branch during the establishment of flower branch; 2) The pollinators had mixed and transitive features with both age-old beetles and efficient bees and catered for evolutionary status of base angiosperm,and the pollen-stolen behaviour happened while high density bees existed in the acompanying plant species of the same anthesis; 3) The pollen vigour had a big variety,and there could be the optimum time of pollen and pistill activity, the pollen flow coexisted in two different models:primary pollen showing a high density visit to pollen colletion and secondary pollen showing a low density visit to searching nectar; 4) This genus was self-compatible,the lower heterozygosity had a further affinty,and the barrier before the zigote formation was the branching of pollen tube and clogging of callose; 5) The embryo abortion was possibly adjusted by architecture and resource limitation,and for the promotion of high yield the first consideration was the fruit-setting rate,and then the second was the seed abortion rate.
Studies were made of the reproductive system of oil-used plants of Paeonia L. from their floral sydrome,pollination process,pollen pistill liveness,sexuality and fate of zigote. The results showed that 1) this genus of plants had a large amount of pollen,bigger corolla,no netar,protogeny and size dependency of mother branch during the establishment of flower branch; 2) The pollinators had mixed and transitive features with both age-old beetles and efficient bees and catered for evolutionary status of base angiosperm,and the pollen-stolen behaviour happened while high density bees existed in the acompanying plant species of the same anthesis; 3) The pollen vigour had a big variety,and there could be the optimum time of pollen and pistill activity, the pollen flow coexisted in two different models:primary pollen showing a high density visit to pollen colletion and secondary pollen showing a low density visit to searching nectar; 4) This genus was self-compatible,the lower heterozygosity had a further affinty,and the barrier before the zigote formation was the branching of pollen tube and clogging of callose; 5) The embryo abortion was possibly adjusted by architecture and resource limitation,and for the promotion of high yield the first consideration was the fruit-setting rate,and then the second was the seed abortion rate.
2015, 36(4): 18-21.
doi: 10.16779/j.cnki.1003-5508.2015.04.002
Abstract:
In this paper,studies were made of soil organic carbon in different-aged Eucalyptus plantations. The results showed that the content of soil organic carbon, readily oxidized organic carbon and chemical recalcitrant organic carbon decreased with the increase of soil depth. And along with the increase of the forest age,they first increased,and then decreased,displaying a broken-line change. The soil organic carbon and readily oxidized organic carbon had the maximum contents at the age of four,and had a very significantly positive correlation. Stable organic carbon reached the maximum at the age of two,and but had a maximum decrease extent at the age of four. This index had a highly significant negative correlation with pH. It meant that the soil quality aged 4 was the best in Eucalyptus plantations,and the maximum was the transformation amount of their stable organic carbon. Root systems of Eucalyptus could absorb chemical stable organic carbon under 1 m thick soil,exhibiting the root's great ability of absorbing nutrients,and also decreasing the stability of soil carbon sequestration at the same time.
In this paper,studies were made of soil organic carbon in different-aged Eucalyptus plantations. The results showed that the content of soil organic carbon, readily oxidized organic carbon and chemical recalcitrant organic carbon decreased with the increase of soil depth. And along with the increase of the forest age,they first increased,and then decreased,displaying a broken-line change. The soil organic carbon and readily oxidized organic carbon had the maximum contents at the age of four,and had a very significantly positive correlation. Stable organic carbon reached the maximum at the age of two,and but had a maximum decrease extent at the age of four. This index had a highly significant negative correlation with pH. It meant that the soil quality aged 4 was the best in Eucalyptus plantations,and the maximum was the transformation amount of their stable organic carbon. Root systems of Eucalyptus could absorb chemical stable organic carbon under 1 m thick soil,exhibiting the root's great ability of absorbing nutrients,and also decreasing the stability of soil carbon sequestration at the same time.
2015, 36(4): 22-27.
doi: 10.16779/j.cnki.1003-5508.2015.04.003
Abstract:
Through tracking observation on the growth characters,adaptability and economic characters of Camellia oleifera ‘Ruanzhi’ superior stands selected from Luxian,it was found that it grew normally and fast,early flowered and fruited in Luxian. Furthermore, there was a very significant difference between seedling stands. The fresh pod yield per plant and fresh seed rate could be up to 6.90 kg and 42.14% respectively after the discount,which showed that Camellia oleifera ‘Ruanzhi’ had a great improvement value. Taking fresh pod yield per plant,fresh pod yield unit area,fresh seed rate,and dried kernel yield and kernel oil rate as the indices,4 superior individuals were selected preliminarily by the methods of principal component analysis and subordinative function analysis.
Through tracking observation on the growth characters,adaptability and economic characters of Camellia oleifera ‘Ruanzhi’ superior stands selected from Luxian,it was found that it grew normally and fast,early flowered and fruited in Luxian. Furthermore, there was a very significant difference between seedling stands. The fresh pod yield per plant and fresh seed rate could be up to 6.90 kg and 42.14% respectively after the discount,which showed that Camellia oleifera ‘Ruanzhi’ had a great improvement value. Taking fresh pod yield per plant,fresh pod yield unit area,fresh seed rate,and dried kernel yield and kernel oil rate as the indices,4 superior individuals were selected preliminarily by the methods of principal component analysis and subordinative function analysis.
2015, 36(4): 28-32.
doi: 10.16779/j.cnki.1003-5508.2015.04.004
Abstract:
Studies were made of the habitat selection of 50~60 stump-tailed macaques (Macaca thibetana) from March 2013 to February 2014 in Maoxiangba region which is geographically located in 104°46' E, 32°35' N in Tangjiahe National Nature Reserve. Thirteen ecological factors were measured in 96 plots where the macaque group ever stayed. These factors included vegetation types,tree density,DBH (diameters of breast height of trees), tree height, canopy cover, shrub coverage, geographical positions, altitude, slope aspects, slope degrees, slope position, the distances to water and the distances to human disturbances. The results indicated that stump-tailed macaques preferred to inhabit evergreen and deciduous broadleaf mixed forests,and deciduous broadleaf forests,whose DBH usually was 20 cm~30 cm and the mean tree height was 11 m~20 m, and the canopy cover was not lower than 20%. They chose altitudes from 1 500 m to 2 000 m,whose forests grew in the slope face of mountains where the slope degree is 20°~40°. This macaques group had not restrict demands for the distances to water and human disturbances.
Studies were made of the habitat selection of 50~60 stump-tailed macaques (Macaca thibetana) from March 2013 to February 2014 in Maoxiangba region which is geographically located in 104°46' E, 32°35' N in Tangjiahe National Nature Reserve. Thirteen ecological factors were measured in 96 plots where the macaque group ever stayed. These factors included vegetation types,tree density,DBH (diameters of breast height of trees), tree height, canopy cover, shrub coverage, geographical positions, altitude, slope aspects, slope degrees, slope position, the distances to water and the distances to human disturbances. The results indicated that stump-tailed macaques preferred to inhabit evergreen and deciduous broadleaf mixed forests,and deciduous broadleaf forests,whose DBH usually was 20 cm~30 cm and the mean tree height was 11 m~20 m, and the canopy cover was not lower than 20%. They chose altitudes from 1 500 m to 2 000 m,whose forests grew in the slope face of mountains where the slope degree is 20°~40°. This macaques group had not restrict demands for the distances to water and human disturbances.
2015, 36(4): 33-36.
doi: 10.16779/j.cnki.1003-5508.2015.04.005
Abstract:
Using the method of principal component analysis, starting from the sample correlation matrix, analysis was made of 8 main characters (by three-diameter average size, shell thickness, nut weight, kernel weight,kernel rate,crude fat,protein,per unit area yield of walnut kernel weight crown projection) of fine individuals of 9 walnut varieties. Taking the cumulative variance contribution rate of the characters reaching 82.751% as the standard,the main composition and function of two main economic traits were determined,able to display the main characters of walnuts in Panzhihua city. By the nut character comparison of samples,the excellent samples with comprehensive economic characters were finally selected.
Using the method of principal component analysis, starting from the sample correlation matrix, analysis was made of 8 main characters (by three-diameter average size, shell thickness, nut weight, kernel weight,kernel rate,crude fat,protein,per unit area yield of walnut kernel weight crown projection) of fine individuals of 9 walnut varieties. Taking the cumulative variance contribution rate of the characters reaching 82.751% as the standard,the main composition and function of two main economic traits were determined,able to display the main characters of walnuts in Panzhihua city. By the nut character comparison of samples,the excellent samples with comprehensive economic characters were finally selected.
2015, 36(4): 37-40.
doi: 10.16779/j.cnki.1003-5508.2015.04.006
Abstract:
55 ripe wild red-bellied squirrels (Callosciurus erythraeus) were captured in Yingjing. After they were anaesthetized by use of ether,their cardiac blood was collected and analyzed with the automatic hematology analyzer in order to detect 18 blood parameters. The results showed that the MCH and MCHC levels of the male red-bellied squirrels were significantly higher than those of the female(P < 0.05), but there were no notable differences in other parameters such as WBC, RBC, etc(P > 0.05). Overall, the normal rang of the red-bellied squirrels' physiological blood parameters were established,which would provide reference data for further research on red-bellied squirrels' physiological state,reproductive characteristics and disease control.
55 ripe wild red-bellied squirrels (Callosciurus erythraeus) were captured in Yingjing. After they were anaesthetized by use of ether,their cardiac blood was collected and analyzed with the automatic hematology analyzer in order to detect 18 blood parameters. The results showed that the MCH and MCHC levels of the male red-bellied squirrels were significantly higher than those of the female(P < 0.05), but there were no notable differences in other parameters such as WBC, RBC, etc(P > 0.05). Overall, the normal rang of the red-bellied squirrels' physiological blood parameters were established,which would provide reference data for further research on red-bellied squirrels' physiological state,reproductive characteristics and disease control.
2015, 36(4): 41-44.
doi: 10.16779/j.cnki.1003-5508.2015.04.007
Abstract:
Taking six-month containerized seedlings of Pterocarpus marsupium as the research object,studies were made of the influence of container size,fertilizer type,nursery substrate on the growth of seedlings by using the orthogonal experiment design method. The results showed that the growth indexes of seedlings obviously increased with the increasing of container size. The height and undergrounddry weight of seedlings by applying 5% organic fertilizer were significantly higher than that by applying 2% phosphorus and 1% compound fertilizer,but there were no obvious differences among three samples in the ground diameter,main root length, aboveground dry weight and whole-plant biomass. The containerized seedlings grew best by using substrate of 80% forest soil + 20% fire soil. By analyzing the difference factors and levels of each combination,the best combination for six-month seedlings of Pterocarpus marsupium was to use 12 cm×16 cm (or 9 cm×12 cm) container size,2% phosphorus and substrate of 80% forest soilt + 20% fire soil.
Taking six-month containerized seedlings of Pterocarpus marsupium as the research object,studies were made of the influence of container size,fertilizer type,nursery substrate on the growth of seedlings by using the orthogonal experiment design method. The results showed that the growth indexes of seedlings obviously increased with the increasing of container size. The height and undergrounddry weight of seedlings by applying 5% organic fertilizer were significantly higher than that by applying 2% phosphorus and 1% compound fertilizer,but there were no obvious differences among three samples in the ground diameter,main root length, aboveground dry weight and whole-plant biomass. The containerized seedlings grew best by using substrate of 80% forest soil + 20% fire soil. By analyzing the difference factors and levels of each combination,the best combination for six-month seedlings of Pterocarpus marsupium was to use 12 cm×16 cm (or 9 cm×12 cm) container size,2% phosphorus and substrate of 80% forest soilt + 20% fire soil.
2015, 36(4): 45-48.
doi: 10.16779/j.cnki.1003-5508.2015.04.008
Abstract:
2015, 36(4): 49-52.
doi: 10.16779/j.cnki.1003-5508.2015.04.009
Abstract:
By using the random block design method, 5 different density adjustments of Dendrocalamus farinosus stands were established under the same site and management conditions and investigaton was made of their shooting number, adult bamboo number, and stocking percentage. The results showed that when the bamboo stand had a managing density of 10 500 bamboos per hectare,it had the highest productivity, its bamboo timber output reached 27.40 tons per hectare, the production increase rate was 20.63%,and the new bamboo rate was up to 30.71%,thus having good economic benefits.
By using the random block design method, 5 different density adjustments of Dendrocalamus farinosus stands were established under the same site and management conditions and investigaton was made of their shooting number, adult bamboo number, and stocking percentage. The results showed that when the bamboo stand had a managing density of 10 500 bamboos per hectare,it had the highest productivity, its bamboo timber output reached 27.40 tons per hectare, the production increase rate was 20.63%,and the new bamboo rate was up to 30.71%,thus having good economic benefits.
2015, 36(4): 53-56.
doi: 10.16779/j.cnki.1003-5508.2015.04.010
Abstract:
The trials of fertilization using complete and orthogonal design for the young growth of Populus deltoids cv. Zhonghuahongye were conducted on the fluviogenic soil in Xindu District of Chengdu City. The results showed that the effects of single nutrient element fertilizer and mixed fertilizer were K > N > P and N + P + K > N + K > N + P and P + K,respectively,and it was obvious for the effect of fertilization formula of 150 g(NH2)2CO + 220 g Ca(H2PO4)2·H2O + 75 g K2SO4 for each tree.
The trials of fertilization using complete and orthogonal design for the young growth of Populus deltoids cv. Zhonghuahongye were conducted on the fluviogenic soil in Xindu District of Chengdu City. The results showed that the effects of single nutrient element fertilizer and mixed fertilizer were K > N > P and N + P + K > N + K > N + P and P + K,respectively,and it was obvious for the effect of fertilization formula of 150 g(NH2)2CO + 220 g Ca(H2PO4)2·H2O + 75 g K2SO4 for each tree.
2015, 36(4): 57-58,17.
doi: 10.16779/j.cnki.1003-5508.2015.04.011
Abstract:
2015, 36(4): 59-64.
doi: 10.16779/j.cnki.1003-5508.2015.04.012
Abstract:
In this paper,analysis was made of the cause of arid and semi-arid areas and vegetation restoration technology in China. On the basis of the research on arid and semiarid regions of Sichuan, Sichuan Province was divided into afforestation type areas, namely, Hengduan Mountains dry-heat valley area. Hengduan mountain dry-warm valley area, Hengduan Mountain dry-temperate valley area and Hengduan Mountains Derong-Xiangcheng semi-arid area. It was pointed out that the moisture and the soil were important factors in vegetation restoration technology. Besides, different vegetation recovery techniques were proposed for the 4 afforestation type areas.
In this paper,analysis was made of the cause of arid and semi-arid areas and vegetation restoration technology in China. On the basis of the research on arid and semiarid regions of Sichuan, Sichuan Province was divided into afforestation type areas, namely, Hengduan Mountains dry-heat valley area. Hengduan mountain dry-warm valley area, Hengduan Mountain dry-temperate valley area and Hengduan Mountains Derong-Xiangcheng semi-arid area. It was pointed out that the moisture and the soil were important factors in vegetation restoration technology. Besides, different vegetation recovery techniques were proposed for the 4 afforestation type areas.
2015, 36(4): 65-71.
doi: 10.16779/j.cnki.1003-5508.2015.04.013
Abstract:
The material resources value of the Defarming-and-reafforestation Project belongs to the rural economy and forestry industry,and is integrated into the scale and proportion threshold of the ecological economic system in the county resources. The location quotient method of regional economics was used for analysis of the regional advantages of potential value in the first-round Defarming-and-reafforestation Project in 178 counties of Sichuan,which involved 15 kinds of raw material forest and 41 species. The advantageous regions of related industries and species were summarized in order to serve for the cultivation of leading industries in agriculture and forestry and the selection of species in a new kound Defarming-andreafforestation project.
The material resources value of the Defarming-and-reafforestation Project belongs to the rural economy and forestry industry,and is integrated into the scale and proportion threshold of the ecological economic system in the county resources. The location quotient method of regional economics was used for analysis of the regional advantages of potential value in the first-round Defarming-and-reafforestation Project in 178 counties of Sichuan,which involved 15 kinds of raw material forest and 41 species. The advantageous regions of related industries and species were summarized in order to serve for the cultivation of leading industries in agriculture and forestry and the selection of species in a new kound Defarming-andreafforestation project.
2015, 36(4): 72-75.
doi: 10.16779/j.cnki.1003-5508.2015.04.014
Abstract:
Research was conducted on the status of Masson pine's growth and biomass allocation at different forest ages (8 years,20 years,30 years) in Shizhu State Forest Farm of East Chongqing. The results showed that ① the DBH and tree height of Masson's pines grew the fastest at young age (8 years) and the middle age (20 years), the timber volume reached the maximum at maturity (30 years). ② Masson's pine's various organs and total biomass would increase along with the increasing of the stand age,the trunk biomass had the fastest increase velosity,and was the highest at the maturity,reaching 72.68%. ③ Within each Masson's pine age,the sorting of all levels of biomass was as follows:tree layer, litter layer, herb layer,shrub layer; tree biomass and forest floor layers' total biomass would increase with increasing age and had an absolute advantage; shrub, herbaceous layer and litter layer occupying the proportion of the total biomass decreased. ④ The sorting of aboveground net primary productive forces of each Masson's pine layer level at the middle-aged forest was as follaws tree layer,litter layer,herb layer,shrub layer. And yet in young forest and mature forest, the sorting was tree layer > herb layer > litter layer > shrub layer; tree layer productivity accounted for the absolute proportion of the total above ground productive forces.
Research was conducted on the status of Masson pine's growth and biomass allocation at different forest ages (8 years,20 years,30 years) in Shizhu State Forest Farm of East Chongqing. The results showed that ① the DBH and tree height of Masson's pines grew the fastest at young age (8 years) and the middle age (20 years), the timber volume reached the maximum at maturity (30 years). ② Masson's pine's various organs and total biomass would increase along with the increasing of the stand age,the trunk biomass had the fastest increase velosity,and was the highest at the maturity,reaching 72.68%. ③ Within each Masson's pine age,the sorting of all levels of biomass was as follows:tree layer, litter layer, herb layer,shrub layer; tree biomass and forest floor layers' total biomass would increase with increasing age and had an absolute advantage; shrub, herbaceous layer and litter layer occupying the proportion of the total biomass decreased. ④ The sorting of aboveground net primary productive forces of each Masson's pine layer level at the middle-aged forest was as follaws tree layer,litter layer,herb layer,shrub layer. And yet in young forest and mature forest, the sorting was tree layer > herb layer > litter layer > shrub layer; tree layer productivity accounted for the absolute proportion of the total above ground productive forces.
2015, 36(4): 76-81.
doi: 10.16779/j.cnki.1003-5508.2015.04.015
Abstract:
The core idea of Low Impact Development (LID) is to minimize the human impact on the ecological environment. The LID idea can integrate the city development and ecological protection into a unity,mitigate damage to the ecological environment in urban development, maintain and protect an undisturbed natural ecosystem mechanism in city,restore and rehabitate those damaged ecosystems. The application result of LID implementation can promote the planning and development of urban wetlands. Firstly, the technical measures of LID can increase the natural water supply in urban wetland systems,also can reduce the hydrological volatility in city. Secondly, it works in reducing sewage treatment stress in urban wetland system and decreasing investment for wetlands' controlling pollution. Finally,the LID method can bring out the uniqueness of the planning and development urban wetlands. Taking Meishan city in Sichuan province for example,in this paper,corresponding suggestions are put forward for the urban wetland planning about wetlands planning guidelines and objectives,planning wetland vegetation,wetland revetment ecology design, management and monitoring of wetland resources, wetland public education and public training,and so on.
The core idea of Low Impact Development (LID) is to minimize the human impact on the ecological environment. The LID idea can integrate the city development and ecological protection into a unity,mitigate damage to the ecological environment in urban development, maintain and protect an undisturbed natural ecosystem mechanism in city,restore and rehabitate those damaged ecosystems. The application result of LID implementation can promote the planning and development of urban wetlands. Firstly, the technical measures of LID can increase the natural water supply in urban wetland systems,also can reduce the hydrological volatility in city. Secondly, it works in reducing sewage treatment stress in urban wetland system and decreasing investment for wetlands' controlling pollution. Finally,the LID method can bring out the uniqueness of the planning and development urban wetlands. Taking Meishan city in Sichuan province for example,in this paper,corresponding suggestions are put forward for the urban wetland planning about wetlands planning guidelines and objectives,planning wetland vegetation,wetland revetment ecology design, management and monitoring of wetland resources, wetland public education and public training,and so on.
2015, 36(4): 82-85.
doi: 10.16779/j.cnki.1003-5508.2015.04.016
Abstract:
Investigations were made on the wild resource distribution, relevant environmental factors and seed traits of Jatropha curcas in Sichuan province. The results showed that the average grain weight,kernel percentage, kernel oil percentage and seed oil percentage were 590.93 g, 64.66%, 54.36% and 35.03%,respectively. There were extremely significant differences in seed traits, kernel percentage, kernel oil percentage and seed oil percentage among populations. The populations of Panzhihua Datian, Panzhihua Liuhuangkou and Ningnan Hulukou were evaluated as the most potential resources for future development. The subtropical dry-hot valleys in Panzhihua city and Ningnan Hulukou were the most suitable areas for Jatropha curcas plantation in Sichuan province.
Investigations were made on the wild resource distribution, relevant environmental factors and seed traits of Jatropha curcas in Sichuan province. The results showed that the average grain weight,kernel percentage, kernel oil percentage and seed oil percentage were 590.93 g, 64.66%, 54.36% and 35.03%,respectively. There were extremely significant differences in seed traits, kernel percentage, kernel oil percentage and seed oil percentage among populations. The populations of Panzhihua Datian, Panzhihua Liuhuangkou and Ningnan Hulukou were evaluated as the most potential resources for future development. The subtropical dry-hot valleys in Panzhihua city and Ningnan Hulukou were the most suitable areas for Jatropha curcas plantation in Sichuan province.
2015, 36(4): 86-89.
doi: 10.16779/j.cnki.1003-5508.2015.04.017
Abstract:
The Chinese prickly ash belongs to a plant of the genus Zanthoxylum L. of Rutaceae, and also is an important economic species. It is planted in a wide area of Sichuan,and its planting area has gradually expanded in recent years. The research on breeding the Chinese prickly ash has an important significance to promoting its industrial development in Sichuan. In this paper, the determination was conducted on its morphological indexes,branch indexes and leaf indexes. The results might provide theoretical guidance for the breeding of the Chinese prickly ash.
The Chinese prickly ash belongs to a plant of the genus Zanthoxylum L. of Rutaceae, and also is an important economic species. It is planted in a wide area of Sichuan,and its planting area has gradually expanded in recent years. The research on breeding the Chinese prickly ash has an important significance to promoting its industrial development in Sichuan. In this paper, the determination was conducted on its morphological indexes,branch indexes and leaf indexes. The results might provide theoretical guidance for the breeding of the Chinese prickly ash.
2015, 36(4): 90-94.
doi: 10.16779/j.cnki.1003-5508.2015.04.018
Abstract:
The research on forest growth characteristics was conducted on the Toona sinensis planted in Jianyang town in Sichuan province by using stem analysis method. The results showed the DBH, tree height and tree volume growth of the 27-year-old Toona sinensis were 26.03 cm,17.9 m and 0.4530 m3, respectisely. Their mean annual increment were 0.96 cm,0.66 m and 0.01678 m3,respectisely. The current annual increment reached the maximum at the age of 24,and they did not intersect at the age of 27, which meant that the Toona sinensis growth process did not reach its quantitative at the age of 27. The growth dynamic models of DBH, height and volume of Toona sinensis were established with the Logistic Equation. Three regression equations were:y=27.7189/(1 + 6.4415 * e-0.1635x), y=16.7421/(1 + 4.2965* e-0.2387x) and y=0.5797/(1 + 42.9833 * e-0.1866x), and the correlation coefficient of fitting curve(R2)were 0.9993,0.9978 and 0.9994.
The research on forest growth characteristics was conducted on the Toona sinensis planted in Jianyang town in Sichuan province by using stem analysis method. The results showed the DBH, tree height and tree volume growth of the 27-year-old Toona sinensis were 26.03 cm,17.9 m and 0.4530 m3, respectisely. Their mean annual increment were 0.96 cm,0.66 m and 0.01678 m3,respectisely. The current annual increment reached the maximum at the age of 24,and they did not intersect at the age of 27, which meant that the Toona sinensis growth process did not reach its quantitative at the age of 27. The growth dynamic models of DBH, height and volume of Toona sinensis were established with the Logistic Equation. Three regression equations were:y=27.7189/(1 + 6.4415 * e-0.1635x), y=16.7421/(1 + 4.2965* e-0.2387x) and y=0.5797/(1 + 42.9833 * e-0.1866x), and the correlation coefficient of fitting curve(R2)were 0.9993,0.9978 and 0.9994.
2015, 36(4): 95-97.
doi: 10.16779/j.cnki.1003-5508.2015.04.019
Abstract:
The succession of vegetation in the landslide was regularly monitored in spring and autumn per year by aclopting the method of 20 m×20 m quadrat and four types of matrix. The results which were collected in five years showed that (1) in three types of landslides, plants recovered faster with 80% coverage or higher; but in the other, its plant recovered slowly with about 10% coverage. (2) The pioneer shrub species in landslides were Buddleja davidii,Rubus setchuenensis,Rubus,Litsea,Hydrangea and so on while the herbaceous ones were fern, Impatiens, Anaphalis, Pilea, etc.. (3) The recovered dominant species in the quadrat naturally changed after the first three years,from Buddleja davidii to Rubus setchuenensis and Rubus.
The succession of vegetation in the landslide was regularly monitored in spring and autumn per year by aclopting the method of 20 m×20 m quadrat and four types of matrix. The results which were collected in five years showed that (1) in three types of landslides, plants recovered faster with 80% coverage or higher; but in the other, its plant recovered slowly with about 10% coverage. (2) The pioneer shrub species in landslides were Buddleja davidii,Rubus setchuenensis,Rubus,Litsea,Hydrangea and so on while the herbaceous ones were fern, Impatiens, Anaphalis, Pilea, etc.. (3) The recovered dominant species in the quadrat naturally changed after the first three years,from Buddleja davidii to Rubus setchuenensis and Rubus.
2015, 36(4): 98-100.
doi: 10.16779/j.cnki.1003-5508.2015.04.020
Abstract:
Planning and building of hilly urban parks play an important role in forming ecological system of the urban green space. In this article,brief analysis was made of planning principles,layout forms,functional groups in planning and building of hilly urban parks. aiming at improving the quality of urban development.
Planning and building of hilly urban parks play an important role in forming ecological system of the urban green space. In this article,brief analysis was made of planning principles,layout forms,functional groups in planning and building of hilly urban parks. aiming at improving the quality of urban development.
2015, 36(4): 101-104,52.
doi: 10.16779/j.cnki.1003-5508.2015.04.021
Abstract:
In this paper,analysis was made of the achievements and existing problems in forestry industry development. According to the forest resource subcompartment data survey, the division of the forestry in Yanbian was conducted by using geomorphology, slope location aspect, slope gradient, altitude, soil type, soil thickness,annual average temperature and pH value. And evaluation was made on the suitability of forestry industry. Finally, some ideas were put forward for the modern forestry industry development in Yanbian.
In this paper,analysis was made of the achievements and existing problems in forestry industry development. According to the forest resource subcompartment data survey, the division of the forestry in Yanbian was conducted by using geomorphology, slope location aspect, slope gradient, altitude, soil type, soil thickness,annual average temperature and pH value. And evaluation was made on the suitability of forestry industry. Finally, some ideas were put forward for the modern forestry industry development in Yanbian.
2015, 36(4): 105-107.
doi: 10.16779/j.cnki.1003-5508.2015.04.022
Abstract:
2015, 36(4): 108-110.
doi: 10.16779/j.cnki.1003-5508.2015.04.023
Abstract:
2015, 36(4): 111-115.
doi: 10.16779/j.cnki.1003-5508.2015.04.024
Abstract:
The giant panda (Ailuropoda melanoleuca) is a flagship species for biodiversity conservation across the world. The impact of the earthquake and secondary disasters on giant pandas was particularly concerned by conservation managers and researchers. After 2008 Wenchuan earthquake and 2013 Lushan earthquake,the researchers adopted 3S technology and other methods such as field investigations to make many studies of the impact of the earthquake on giant pandas from different sights. In this paper, a description was made of many aspects associating with the giant panda conservation after the earthquake, such as the evaluation of destroying and recovering of giant panda habitats, behavioral response of giant pandas to the earthquake and the influence of the earthquake on the communities which were closed to giant panda protected areas. Besides,some suggections were put forward for the future research associating with conservation of giant pandas after natural disasters.
The giant panda (Ailuropoda melanoleuca) is a flagship species for biodiversity conservation across the world. The impact of the earthquake and secondary disasters on giant pandas was particularly concerned by conservation managers and researchers. After 2008 Wenchuan earthquake and 2013 Lushan earthquake,the researchers adopted 3S technology and other methods such as field investigations to make many studies of the impact of the earthquake on giant pandas from different sights. In this paper, a description was made of many aspects associating with the giant panda conservation after the earthquake, such as the evaluation of destroying and recovering of giant panda habitats, behavioral response of giant pandas to the earthquake and the influence of the earthquake on the communities which were closed to giant panda protected areas. Besides,some suggections were put forward for the future research associating with conservation of giant pandas after natural disasters.
2015, 36(4): 116-119.
doi: 10.16779/j.cnki.1003-5508.2015.04.025
Abstract:
Investigation was made of the herbaceous plants in Chaqingsongduo White-ipped Deer National Nature Reserve of Sichuan Province. The results showed that there were six hundred and forty-one herb species (including subspecies,varieties and forms) which belong to 68 families and 261 genera. According to statistics, there were 354 ornamental plants including ornamental foliage, flower, fruit and whole plant; and there were 1 indigenous pesticide plant,2 oil plants,2 fragrant oils plants,15 edible plants,2 flavoring plants,1 fiber plant,1 tannic plant,1 dye plant,1 nectar plants,21 poisonous plants and 74 forage plants.
Investigation was made of the herbaceous plants in Chaqingsongduo White-ipped Deer National Nature Reserve of Sichuan Province. The results showed that there were six hundred and forty-one herb species (including subspecies,varieties and forms) which belong to 68 families and 261 genera. According to statistics, there were 354 ornamental plants including ornamental foliage, flower, fruit and whole plant; and there were 1 indigenous pesticide plant,2 oil plants,2 fragrant oils plants,15 edible plants,2 flavoring plants,1 fiber plant,1 tannic plant,1 dye plant,1 nectar plants,21 poisonous plants and 74 forage plants.
2015, 36(4): 120-124.
doi: 10.16779/j.cnki.1003-5508.2015.04.026
Abstract:
With the method of sample survey,studies were made of the structure characteristics of the tree layer of plant communities on the sunny slope in Chuxiong Xishan Park. The results showed that the main arbor species were Pinus yunnanensis,Quercus acutissima Carruth,Castanopsis orthacantha,Pinus armandi,Keteleeria evelyniana and so on. The dominant families in low mountain zones were Fagaceae and Quercus. The dominant families in high mountain areas were Pinaceae and Pinus. With the increase of elevation,Shannon-Wiener index and Simpson index declined slowly, Margalef presented a single-peak distribution pattern,and Pielou index showed a bimodal distribution pattern. Arbor density first increased and then decreased with the enhancing of elevation. The DBH of trees were concentrated on Ⅱ、Ⅲ、Ⅳ diameter classes,such trees were mostly distributed in the middle and low altitudes.
With the method of sample survey,studies were made of the structure characteristics of the tree layer of plant communities on the sunny slope in Chuxiong Xishan Park. The results showed that the main arbor species were Pinus yunnanensis,Quercus acutissima Carruth,Castanopsis orthacantha,Pinus armandi,Keteleeria evelyniana and so on. The dominant families in low mountain zones were Fagaceae and Quercus. The dominant families in high mountain areas were Pinaceae and Pinus. With the increase of elevation,Shannon-Wiener index and Simpson index declined slowly, Margalef presented a single-peak distribution pattern,and Pielou index showed a bimodal distribution pattern. Arbor density first increased and then decreased with the enhancing of elevation. The DBH of trees were concentrated on Ⅱ、Ⅲ、Ⅳ diameter classes,such trees were mostly distributed in the middle and low altitudes.
2015, 36(4): 125-127,85.
doi: 10.16779/j.cnki.1003-5508.2015.04.027
Abstract:
There are about 3 000~3 400 red panda individuals in the Sichuan Province which is the most quantity of the red panda in China. The Qionglai Mountains of the Sichuan is one of the important habitats of red pandas, among which the Wenchuan County,the Baoxing County,and the Tianquanthe County are larger distributional areas. On 20 th, April, 2013, a 7.0-grade magnitude earthquake occurred in Lushan County in Sichuan Province, and the Tianquan County was one of the most disaster area. The ecological environment was severely damaged, and the survival of some wild animals was threatened by this earthquake. In this paper, investigations were made on the quantity and the distribution of the red panda population in the possible habitats in Tianquan County by adopting the sample line method,the sample method and the 3S technique. Meanwhile, a field survey was made in key areas (about 360 hm2). The results showed that the there were about 43~48 red pandas in the Tianquan County,and they were mainly scattered in the Sichuan Erlang Mountain Forest Park, The Labahe Nature Reserve, all forest farms and the Huoshigou operating area. There were 1 or 2 red pandas found in the key areas.
There are about 3 000~3 400 red panda individuals in the Sichuan Province which is the most quantity of the red panda in China. The Qionglai Mountains of the Sichuan is one of the important habitats of red pandas, among which the Wenchuan County,the Baoxing County,and the Tianquanthe County are larger distributional areas. On 20 th, April, 2013, a 7.0-grade magnitude earthquake occurred in Lushan County in Sichuan Province, and the Tianquan County was one of the most disaster area. The ecological environment was severely damaged, and the survival of some wild animals was threatened by this earthquake. In this paper, investigations were made on the quantity and the distribution of the red panda population in the possible habitats in Tianquan County by adopting the sample line method,the sample method and the 3S technique. Meanwhile, a field survey was made in key areas (about 360 hm2). The results showed that the there were about 43~48 red pandas in the Tianquan County,and they were mainly scattered in the Sichuan Erlang Mountain Forest Park, The Labahe Nature Reserve, all forest farms and the Huoshigou operating area. There were 1 or 2 red pandas found in the key areas.
2015, 36(4): 128-131.
doi: 10.16779/j.cnki.1003-5508.2015.04.028
Abstract:
Forestry Exposition Garden of Nanbu County is a sightseeing forestry demonstration park which mainly produces seedlings. It combined the seedling production and management with the creation of landscape to promote the common development of forestry and tourism. In the article, taking Forestry Exposition Garden of Nanbu County as an example, a detailed description was made of its backgrounds and function division. Then, an effective planning idea was put forward for the modem sightseeing forestry park, aiming to provide a favorable reference for the sustainable development of sightseeing forestry.
Forestry Exposition Garden of Nanbu County is a sightseeing forestry demonstration park which mainly produces seedlings. It combined the seedling production and management with the creation of landscape to promote the common development of forestry and tourism. In the article, taking Forestry Exposition Garden of Nanbu County as an example, a detailed description was made of its backgrounds and function division. Then, an effective planning idea was put forward for the modem sightseeing forestry park, aiming to provide a favorable reference for the sustainable development of sightseeing forestry.
2015, 36(4): 132-135.
doi: 10.16779/j.cnki.1003-5508.2015.04.029
Abstract:
2015, 36(4): 136-138.
doi: 10.16779/j.cnki.1003-5508.2015.04.030
Abstract:
A summary was made of the current status of environment and resources of wetlands in middle reaches of the Jialing River. From the aspects of legislation, administration and rational use of resources, analysis was made of the existing problems and the reasons in wetlands in middle reaches of the Jialing River. In view of these problems, some countermeasures were put porward for the protection and rational use of wetlands in middle reaches of the Jialing River.
A summary was made of the current status of environment and resources of wetlands in middle reaches of the Jialing River. From the aspects of legislation, administration and rational use of resources, analysis was made of the existing problems and the reasons in wetlands in middle reaches of the Jialing River. In view of these problems, some countermeasures were put porward for the protection and rational use of wetlands in middle reaches of the Jialing River.
2015, 36(4): 139-141,81.
doi: 10.16779/j.cnki.1003-5508.2015.04.031
Abstract:
2015, 36(4): 142-145,94.
doi: 10.16779/j.cnki.1003-5508.2015.04.032
Abstract:
In this paper, aceording to an objective evaluation of the current situation of talent resourees in Sichuan Academy of Forestry, analysis was made of the data of the talent demand and recruitment in recent five years, and the future tendency was illustrated in the talent demand from the aspects of ages, posts, professions, levels, quantities and recruiting methods. Besides, some measures were put forward for talent guarantee, aiming to provides a powerful talent guarantee theory for forestry science research units so as to utilize talent resources rationally and give full play to the power of science and technology, and ensuring the sustainable development of forestry scientific research institutions.
In this paper, aceording to an objective evaluation of the current situation of talent resourees in Sichuan Academy of Forestry, analysis was made of the data of the talent demand and recruitment in recent five years, and the future tendency was illustrated in the talent demand from the aspects of ages, posts, professions, levels, quantities and recruiting methods. Besides, some measures were put forward for talent guarantee, aiming to provides a powerful talent guarantee theory for forestry science research units so as to utilize talent resources rationally and give full play to the power of science and technology, and ensuring the sustainable development of forestry scientific research institutions.
2015, 36(4): 146-147.
doi: 10.16779/j.cnki.1003-5508.2015.04.033
Abstract:
2015, 36(4): 148-150.
doi: 10.16779/j.cnki.1003-5508.2015.04.034
Abstract:
