Nebkhas are isolated mounds vegetated with burial-tolerant desert plants that trap windborne sediment within their canopies.Nebkhas are critical to desertification control and biodiversity protection of oases in arid ...Nebkhas are isolated mounds vegetated with burial-tolerant desert plants that trap windborne sediment within their canopies.Nebkhas are critical to desertification control and biodiversity protection of oases in arid and semi-arid regions of China,as they(ⅰ)trap windborne sediments and ensure oasis security;(ⅱ)as“fertile islands,”nebkhas can trap and provide a suitable micro-environment for seeds,birds,and small soil animals,and increase biodiversity;(ⅲ)increase the soil surface roughness and significantly reduce soil erosion following heavy rain.However,the establishment of sand-fixing vegetation and over-grazing significantly limits the development and accelerate the degradation of nebkhas,threatening oasis ecosystems.We provide background and recommendations for protective measures for nebkha landscapes in arid and semi-arid areas of China to aid managers in oasis protection.展开更多
The Micangshan Forest Park is located in the northeast edge of the Sichuan Basin. The wild animals and plants resources are rich and the ecosystem is integrity. There are well-preserved areas of native biological comm...The Micangshan Forest Park is located in the northeast edge of the Sichuan Basin. The wild animals and plants resources are rich and the ecosystem is integrity. There are well-preserved areas of native biological communities. Its strip and the region decided that on the one hand biological diversity is rich; on the other hand, there is its unique ecological fragility. Once it is destroyed, it would be very difficult to restore. In order to protect the ecological environment of wild animal and plant habitats and wild animal and plant resources, this paper uses quadrat survey procedure to carry on the investigation. In the Micangshan Forest Park's typical land sector the author establishes the sample area of 20 m×20 m to invest the tree layer of plant species and builds five 2 m×2 m the small quadrats along the type place's diagonal line machinery to invest bush level and the field layer floristic component. Again according to the Micangshan Forest Park's terrain, the vegetation and the difference humanity interference condition, the autor builds the different quantities separately the line transect to invest the animal type. This article through to eastern Sichuan Province north the Micangshan forest park biodiversity resources investigation, has analyzed the biodiversity protection work present situation and the existence question, and put forward the proposal to the next protection work.展开更多
A wetland ecosystem's value may be considered as the value derived from its natural resources, the value derived from its eco-environment, the value for special protection and values in cultural, research and educ...A wetland ecosystem's value may be considered as the value derived from its natural resources, the value derived from its eco-environment, the value for special protection and values in cultural, research and educational aspects. Lake Honghu, in the heartland of Hubei Province, covers a vast but shallow body of water and surrounding marshlands. It is conducive to farmland irrigation, flooding regulation, adjustment of the local climate and self-purification of the water quality. Because of its benign functions, the native ecosystem of the lake is ecologically sound, and the thriving wildlife in its ecosystem makes it a primordial pool of biodiversity. Besides, it is possible to transform it into a national base for environmental education and an R&D center for freshwater organisms, so that it can play a constructive role in heightening the public's awareness of environmental protection.展开更多
With the analyses of the reasons for the emergence of domestic and overseas markets for forest environmental service and its significance, this paper summarizes the progress in the research on the market and reviews t...With the analyses of the reasons for the emergence of domestic and overseas markets for forest environmental service and its significance, this paper summarizes the progress in the research on the market and reviews the operations of the markets for 4 kinds of forest environmental services that are watershed protection services, biodiversity protection services, carbon sequestration services and landscape services. At the end, the paper discusses the major problems arising in the creation of markets for environmental services and the developing tendency.展开更多
基金This work was supported by the National Natural Science Foundation of China subsidization project[41701600]National basic resource survey:Survey on the desert major plant communities in China[2017FY100200].
文摘Nebkhas are isolated mounds vegetated with burial-tolerant desert plants that trap windborne sediment within their canopies.Nebkhas are critical to desertification control and biodiversity protection of oases in arid and semi-arid regions of China,as they(ⅰ)trap windborne sediments and ensure oasis security;(ⅱ)as“fertile islands,”nebkhas can trap and provide a suitable micro-environment for seeds,birds,and small soil animals,and increase biodiversity;(ⅲ)increase the soil surface roughness and significantly reduce soil erosion following heavy rain.However,the establishment of sand-fixing vegetation and over-grazing significantly limits the development and accelerate the degradation of nebkhas,threatening oasis ecosystems.We provide background and recommendations for protective measures for nebkha landscapes in arid and semi-arid areas of China to aid managers in oasis protection.
文摘The Micangshan Forest Park is located in the northeast edge of the Sichuan Basin. The wild animals and plants resources are rich and the ecosystem is integrity. There are well-preserved areas of native biological communities. Its strip and the region decided that on the one hand biological diversity is rich; on the other hand, there is its unique ecological fragility. Once it is destroyed, it would be very difficult to restore. In order to protect the ecological environment of wild animal and plant habitats and wild animal and plant resources, this paper uses quadrat survey procedure to carry on the investigation. In the Micangshan Forest Park's typical land sector the author establishes the sample area of 20 m×20 m to invest the tree layer of plant species and builds five 2 m×2 m the small quadrats along the type place's diagonal line machinery to invest bush level and the field layer floristic component. Again according to the Micangshan Forest Park's terrain, the vegetation and the difference humanity interference condition, the autor builds the different quantities separately the line transect to invest the animal type. This article through to eastern Sichuan Province north the Micangshan forest park biodiversity resources investigation, has analyzed the biodiversity protection work present situation and the existence question, and put forward the proposal to the next protection work.
基金An R&D project funded by the National Natu-ral Science Foundation of China(No.49871071).
文摘A wetland ecosystem's value may be considered as the value derived from its natural resources, the value derived from its eco-environment, the value for special protection and values in cultural, research and educational aspects. Lake Honghu, in the heartland of Hubei Province, covers a vast but shallow body of water and surrounding marshlands. It is conducive to farmland irrigation, flooding regulation, adjustment of the local climate and self-purification of the water quality. Because of its benign functions, the native ecosystem of the lake is ecologically sound, and the thriving wildlife in its ecosystem makes it a primordial pool of biodiversity. Besides, it is possible to transform it into a national base for environmental education and an R&D center for freshwater organisms, so that it can play a constructive role in heightening the public's awareness of environmental protection.
文摘With the analyses of the reasons for the emergence of domestic and overseas markets for forest environmental service and its significance, this paper summarizes the progress in the research on the market and reviews the operations of the markets for 4 kinds of forest environmental services that are watershed protection services, biodiversity protection services, carbon sequestration services and landscape services. At the end, the paper discusses the major problems arising in the creation of markets for environmental services and the developing tendency.
