The Classification And Evaluation Method Of "Sansheng" Space In Nature Reserves

General Secretary Xi Jinping pointed out in the report of the 19th National Congress that human beings must respect nature,conform to nature and protect nature.However,with the rapid development of human society,some necessary engineering construction projects will inevitably cause damage to the ecological environment,especially the nature reserves.To this end,it is of great significance to explore the impact of construction projects on the ecological environment of nature reserves and to minimize the negative impacts brought by them,so as to achieve a win-win situation between construction projects and ecological environment.Taking the nature reserve as the starting point,this paper analyzes and explores the impact of the construction project on the ecological environment of the nature reserve,which provides a theoretical basis for how to optimize the production,life and ecological pattern of the nature reserve after the completion of the construction project and provides decision support for relevant planning of government departments.This paper makes a scientific and quantitative evaluation of the ecological environment impact of nature reserves from the perspective of the "Sansheng" space of production,life and ecology.The specific research content is as follows:(1)From the perspective of national macro-level,based on the classification principle of space utilization of the "Sansheng" space in nature reserves,the "Sansheng" spatial land use classification system of nature reserves is constructed based on land function,and the method of zoning superposition and classification extraction is adopted.The nature reserve carries out the classification of "Sansheng" space land use.(2)Through the expert survey method,the ecological environment impact assessment indicators and the weights of each evaluation index of the construction project in the living production space for the nature reserve and its affected areas are determined,and the evaluation index system for the impact of the construction project on the ecological environment in the living production space of the nature reserve is established.The weighted average method is used to calculate the ecological environment impact index,and the ecological environment impact of the nature reserve is quantitatively,scientifically and systematically evaluated.(3)Through the ArcGIS model builder,combined with the ecological environment impact assessment index system,the ecological environment impact assessment index model is established,and the specific value of the ecological environment impact assessment index of the nature reserve is calculated through the model.(4)Application demonstrations were carried out in Wulushan National Nature Reserve and Xiangtoushan National Nature Reserve.The results show that the construction projects in the living production space of Wulushan National Nature Reserve are mainly industrial and mining construction projects,which have a slight impact on the ecological environment of the nature reserve.The largest area in the buffer zone has a significant impact on its affected area.The construction project in the living production space of the Xiangtoushan National Nature Reserve is mainly a water conservancy and hydropower construction project,which has a slight impact on the ecological environment of the nature reserve.The largest new area in the experimental area has a significant impact on its affected area.