Study On County Critical Eco-spatial Division Based On Ecological Suitability

The unreasonable development of territorial space and the unreasonable allocation of resources have brought about a series of ecological environment problems.In order to improve the utilization rate of territorial space,We protect the ecological environment from and scientifically divide the ecology space.The conclusions are as follows:1.Based on the evaluation method of ecological suitability and the reality of Xiangyin,the evaluation indexes of elevation,slope,vegetation,water body,drinking water conservation area of Xiang River basin,red line of ecological protection and sensitivity of soil erosion were selected according to local conditions,and the basic ecological spatial ecological suitability evaluation system of county was established.2.According to the characteristics and actual situation of different ecological factors in the research scope,the index classification is given relative grade and value.On the Arc GIS platform,the index classification schematic map is formed by euclidean distance and re-classification.The larger the assignment,the higher the ecological suitability.yaahp analytic hierarchy process software was used to establish the hierarchical structure model,and combined with mcharg overlap analysis method,the ecological factors after grading assignment and weight analysis were superimposed.Finally,the critical ecology space of Xiangyin county was idengtified.3.The basic ecology space of Xiangyin County includes the red line of ecological protection with an area of 303.83 km2;Yangshahu-Donghu National Wetland Park with an area of 12.52 km2;the drinking water source protection area of Xiangjiang River Basin with an area of 7.646 km2;and the sensitive area of soil erosion reaches 80.66 km2 and the ecological forest with an area of 33.99 km2.The total ecology space area of Xiangyin County is 483.646 km2,accounting for 27.74% of the total land area of Xiangyin County.4.According to the results of the identification of critical ecology space in Xiangyin County,specific and targeted control measures are put forward for its components,which can not only effectively control the boundary of ecology space,but also ensure the sustainable development of ecology space in Xiangyin County.