Study On Landscape Ecological Sensitivity Evaluation Of Pengzhou Jian River Basin Based On GIS Technology

The degree and intensity of human influence on the natural environment are positively correlated with social development and technological progress,social development and social development,and the regional ecological environment problems such as soil erosion,salinization,soil erosion and acid rain caused by technological progress are becoming more and more serious.These regional ecological and environmental problems pose a serious threat to the atmosphere,land and water resources on which human beings depend,and the direct and indirect economic losses caused by each year are considerable.Eco-environmental sensitivity assessment is an analysis of the current situation of each region and its ability to adapt to external interference from the perspective of ecological environment system.It is an important part of ecosystem analysis and evaluation,and also the basis of ecological zoning.This paper attempts to establish a landscape evaluation system of Pengzhou Jian River basin based on ecological sensitivity,and makes an in-depth analysis of the landscape environment of the Jian River basin through three aspects of soil erosion sensitivity,acid rain sensitivity and geological hazard sensitivity,and gets the results of ecological sensitivity evaluation in the study area.This thesis mainly studies from the following three aspects:1)First determine the main research objects and research objectives,followed by field visits and research on the study area,collect relevant data,and finally according to the relevant literature,combined with the actual situation of the study area,through the analytic hierarchy process,the evaluation indicators are scored and assigned value.Three target layers and 12 factor layers were established respectively.2)Using GIS related software to draw the regional analysis diagram of ecological sensitivity evaluation.Finally,the results of ecological sensitivity evaluation in Jian River basin are obtained by using map superposition technique: There are five levels of zoning: insensitive areas,mildly sensitive areas,moderately sensitive areas,highly sensitive areas,very sensitive areas.3)on this basis,based on the relevant data of the Jian River basin and the results of ecological sensitivity evaluation,the landscape protection zoning of the four-level Neijiang river basin is proposed,which are key protected areas,primary protected areas,two protected areas and three protected areas,and the corresponding protection strategies are put forward.