Analysis Of Vegetation Coverage Change In Dahuofang Reservoir Basin

Located in Fushun city,Dahuofang reservoir is one of the main drinking water source in eastern Liaoning province,and its ecological safety is closely related to people's life in the provinceThis study with prospective reserve of Dahuofang reservoir basin as the study area,with Landsat TM/ETM +/OLI remote sensing data,DEM grid data,the land use status figure of Fushun city vector data as data sources,combining with the related statistical yearbook data,based on remote sensing technology,the Fractional Vegetation Cover(FVC)formula in the study area is obtained by using mathematical statistics knowledgemodel,applying this formula in the study area from 2004 to 2015 a total of 12 years of Vegetation Cover change has carried on the analysis and evaluation.The main content of the paper is as follows:(1)Common vegetation index on FVC simulation in the study area are analyzed,through visual interpretation and comparative confusion matrix,point out the most suitable for the study area vegetation index of vegetation cover change research.(2)The application of mixed pixels,the method of linear fitting formulas for calculating FVC,in the study area accuracy assessment for good.(3)The maximum synthesis is used to analyze the research area of vegetation cover from 2004 to 2015 change,Slope classification method is used to analyze the changing trend,Hurst index is used to analyze the vegetation change future sustainability.Introduces related to changes in natural and artificial factors,and using Pearson correlation and chi-square test to determine the related factors and vegetation change relations,based on the related factors of FVC multivariate model formula,and puts forward reasonable Suggestions for the vegetation construction in the future in the study area.