The Study Of Land Use Change And Ecological Sensitivity Of Yong Xing

With the accelerating pace of urbanization,the advancement of industrialization,the development of scale economization,the spatial pattern of land use change had a significant impact,leading to the cultivated land,forest land,garden land and other agricultural land occupied and squeeze dinevitably,leding to a series of ecological problems.The increasingly prominent contradiction between human and nature,potential ecological sensitivity problem has become the main obstacle to hinder the sustainable development.Therefore,based on land use change to evaluate the ecological sensitivity,to formulate regional space governance strategy,has become a key problem.In this paper,Yongxing county as the example,2005-2014 is discussed the influence of land use change on ecosystem sensitivity.Firstly,Based on the land use dynamic degree,land use degree,regional difference of land use,land use economic niche four aspects,analyzes the land use change from 2005 to 2014 of Yongxing deeply.Secondly,according to the pressure of land use,the pressure of social and economic development,the pressure of ecological environment establish the evaluation index system of ecological sensitivity in Yongxing.finally,combine entropy weight method with analytic hierarchy process to calculate criterion weight and index weight,and Use the comprehensiveindex method to calculatethe ecological sensitivity of 2005 and 2014 in Yongxing.Then grade ecological sensitivity level according to the evaluation results.Pearson correlation analysis was used to study the various land types of variation and the correlation of ecological sensitivity level changes.Main conclusions are as follows:(1)It turned out that land use change significantly,the corresponding changes have taken place in various types of land,regional obvious regional difference of land use degree,land economic niche transformation from agricultural to non-agricultural gradually.(2)The high ecological sensitivity areas number increased fromone to three;The moderate ecological sensitivity areas number reduce fromnine to five;The light sensitive area number remains the same;The without ecological sensitivity areas number increasedfromnone to one.(3)The variation of forest land and ecological sensitivity evaluation scores showed significant negative correlation variation;The variation of land for traffic and water conservancy and ecological sensitivity variation of the comprehensive evaluation score of present significant positive correlation.