An Assessment Of China's Ecological Environment Quality Change And The Spatial Variation

In recent years,the ecological environment events has occurred frequently,deterioration of the ecological environment has a serious impact on the healthy life of residents,understood the ecological environment of the provinces and cities in China,and analyzed their changes and spatial regional differences,which is of practical significance to sustainable development,but also provides a scientific basis to develop a reasonable ecological management policy.Based on the theory of eco-environmental system,this paper establishes a comprehensive evaluation index system of ecological environment quality composed of three subsystems,such as natural environment,economic environment and social environment,and constructs the index of eco-environmental quality evaluation index based on comprehensive index method and analytic hierarchy process system,in order to explain the relationship between ecology and people better,excluding the previous ecological environment as the core of the construction model,standing on the relationship between man and ecological perspective,select and survival,life is closely related to the evaluation index.This paper chooses 31 provinces and cities in China as the research object,and takes the time of 2000,2005,2010 and 2015,in order to clarify the change of ecological environment quality in China.In this paper,collect and collate the data to the comprehensive evaluation of the ecological environment quality of each province and city,from the two dimensions of time and space to analyze the distribution of ecological environment in China,the conclusions follows:(1)In terms of the changing trend,the ecological environment quality of China exceeded the trend of large-scale decline in 2000-2005,the overall recovery from 2005 to 2010,and the trend of changing the ecological environment quality among provinces in 2010 and 2015,In some areas to maintain a steady upward trend,while the other part of the region showed a downward trend.As the overall ecological environment changes in the state of change,the fluctuation is getting smaller and smaller..(2)In terms of quality grade,China's ecological and environmental quality level remained stable in the period from 2000 to 2015,and the quality level was generally favorable.(3)In terms of spatial differences,the ecological environment quality of remote areas represented by Xinjiang,Qinghai,Neimenggu and Yunnan is relatively good,while the Yangtze River Delta,represented by Tianjin and Shanghai as the representative,is the main ecological deterioration Agglomeration,and the deterioration of the trend to the inland showed fan-shaped decline.Economic development and population growth has a greater impact on China's eco-environmental quality.China's long-standing extensive economic development model has been seriously affected by the rapid economic progress,at the expense of the environment,the ecological environment has been seriously affected,industrial structure and energy structure of the adjustment takes a long time,so the impact of economic development on the quality of the ecological environment will continue.Followed by population growth,resource shortage is worsening.However,with the national policy of macro-control,the continuous optimization of economic structure,the impact of the economy on the ecological environment will gradually weaken,coupled with the general improvement of the quality of residents,environmental protection has been improved,China's ecological environment will face to new opportunities.