Study On Comprehensive Evaluation Of Ecological Environment Sensitivity

ABSTRACT:With the development of society and economy,human irrational ues of natural resources and the ecological system is destroyed, which will lead to serious ecological and environmental problems. Ecological and environmental problems have been paid more attention to prevent and resolve, in order to effectively protect the ecological environment, the scholars have put forward ecological environment sensitivity related concepts and to carry out a study on the evaluation.Evaluation of ecological sensitivity for the analysis of regional ecological system stability, for ecosystem protection and restoration work has its important role. It refers to the ecological system of the chang of natural environment and human activities reflect the degree, but also reflects a region of the ecological imbalance and ecological environment problems in probability and recovery rate. While the sensitivity of ecological environment comprehensive assessment is a quality of the regional ecological environment, rational use of land resources, population and economy development status of comprehensive index of ecological system, which is on a variety activities to the sensitivity of the reaction, used to reflect the ecological imbalance and eco-environment problems in probability,taking the Guilin Yongfu County as the study object of ecological environment sensitivity in Yongfu County,the features of the ecological environment establish the evaluation index system of ecological environmental sensitivity from the soil erosion sensitivity, environmental sensitivity, rocky desertification sensitivity of three respects, using AHP method to calculate the weight, combined with the use of single factor, multiple factors comprehensive evaluation model.using RS and GIS technology to sensitivity of ecological environment comprehensive evaluation map, and will county according to the sensitivity level is divided into extremely sensitive area, the highly sensitive area,moderate sensitive area, sensitive area, not the sensitive area, which is extremely sensitive area county a total area of1.84%, the highly sensitive accounted for9.42%, moderate sensitive accounted for11.05, sensitive area accounts for35.45%of the total area of the county, insensitive area accounts for42.92%of the total area of Yongfu. Through analysing and puting forward relevant suggestions and countering measures, which purpose to make the region ecological environment protection and construction planning, maintaining regional ecological security, and rational use of resources and production of industry and agriculture are reasonable layout, ecological environment conservation area and provide scientific basis for environmental management, and to providing management information and management tools.