The Study On The Method Of Biodiversity Assessment

Biodiversity conservation has become a focus of global concern.Evaluation of biodiversity is the basis of biodiversity conservation and management, and an accurate and reliable grasp of biodiversity is the basis of the scientific decision-making of biodiversity conservation.Carrying out large-scale assessment of biodiversity conservation has become an important issue of the study of biodiversity as well as its conservation, management and decision-making.Anhui Province is located in the north-south transition zone across three climatic zones,the warm temperate,northern subtropical and middle subtropical, and across three major river basins, the Yangtze River, Huaihe River and Xinanjiang. Lakes,plains and hills are scattered within the province.With a complex and diverse topography and a highly heterogeneous natural landscape, there breeds a wealth of biological resources.By referring to the assessment indicators and methods of provincial biodiversity recommended by the State Environmental Protection Department and taking the actual situation of Anhui Province into account,this paper discusses the assessment indicators and methods of biodiversity in Anhui Province.It proposes ten assessment indicators of biodiversity, including abundance of wild higher animals,richness of wild vascular plants,diversity of ecosystem types,integrity of the vertical stratification of vegetation,species endemism, degrees of alien species invasion,levels of species under threat,national key protected species index,habitat naturalness and wetland diversity index and so on.By making full use of the basic information like the investigation of biological species resources in Anhui Province,the survey of ecological environment in Anhui Province,this paper assesses the biodiversity of the 17 provincial cities in Anhui Province,including 79 county-level administrative regions.The assessment shows that, in the 79 evaluated regions, the level of biodiversity is high in 8.9% of the area, medium in 29.1% of the area, general in 24% of the area and low in 38% of the area. The better counties of biodiversity in Anhui Province are mainly in the south of Anhui Province and the Dabie Mountain area, while the poor counties of biodiversity are mainly in Northern Plains. Generally, it is a reflection of the situation in Anhui Province,basically reflecting the differences of biodiversity within the counties in Anhui Province. In addition, this article makes a preliminary analysis of the main threats faced by biodiversity conservation in Anhui Province,and puts forward some proposals to protect the biodiversity in Anhui:first, to carry out the theme function zoning and coordinate the relationship between the regional economic development and biodiversity conservation;second, to enforce the control of environmental pollution and ecological damage;third, to strengthen the construction and management of nature reserves;fourth, to establish the detection and risk assessment system of biodiversity in Anhui Province;fifth,to intensify the public education and the legal system;sixth, to increase the investment.