Ecological Constraints Evaluation System Based On GIS Plateau Lake Area

Along with the advancement of urbanization, the rapid growth of the urbanpopulation and the scale of construction land within the scope of the Dianchi LakeBasin has increased year by year. Due to the lack of reasonable size control and spaceoptimization, many areas of construction land has a blind and disorderly growth trend,on the one hand, caused the deterioration of ecological environment in the region, onthe other hand, sustainable land use within the scope of the basin buried safe hiddentrouble. Therefore, in order to coordinate regional land use and ecologicalenvironment construction, this paper puts forward the Dianchi lake watershedecological constraint type classification method based on GIS on the basis of theexisting various zoning method, while the natural ecological conditions and resourcesenvironment as the constraint conditions of regional ecological balance, and discussesthe evaluation unit division, index selection and handling technical issues.The paper is divided into six parts, the first part is an introduction, discusses thebackground and significance of the research, the research situation, the main researchand technology roadmap, research methods; The second part is the theoretical basis ofthe study, including the related theoretical basis evaluation of ecological constraints;The third part is an overview of the Dianchi Lake Basin, including the scope of thestudy area, the profile of the natural environment, socio-economic profiles andecological profile; The fourth part is the ecological constraints evaluation system ofDianchi Lake Basin based on GIS, to explore the ecological constraint evaluationprinciples in Dianchi Lake Basin, screening evaluation factors, the method fordetermining the weights of evaluation indexes; The fifth part is the ecologicalconstraints of the Dianchi Lake Basin Evaluation and partitions, including datacollection and database creation, GIS-based Dianchi Lake Ecological Constraints,analyzing the evaluation results are and zoning of recommendations; Part VI is theconclusion of the article.Through to the ecological evaluation of Dianchi Lake Basin, the study area is divided into five ecological constraint type area: the highest ecological constraintsDistrict, higher ecological constraints District, high ecological constraints, mediumecological constraints District and low ecological constraints District. Dianchi Lakewater surface is296.90km2, accounting for10.34%of the basin, the highestecological constraint area is383.24km2, accounting for13.35%of the basin, area ofhigher ecological constraints is212.24km2, accounting for7.39%of the basin, highecological constraint area is713.47km2, accounting for24.85%of the basin,medium ecological constraint area is1189.25km2, accounting for41.42%of the totalbasin, low ecological constraint area is76.42km2, accounting for2.66%of the basin.On the basis of the evaluation results, the study propose various types of partitionlayout-oriented land use and control measures, provide a scientific basis for theDianchi Lake Basin land resource optimization configuration.