A Study On Change Of The Aiding Lake In Recent Thirty-five Year Based On RS And GIS Technology

Aiding Lake is a typical inland arid areas of the lake, which is very sensitive to the climate and environmental change. Ancient Aiding Lake area of the broad masses, but with the changes in natural factors and human activities intensified, particularly after the recent 35a, Aiding Lake experienced a number of dry - water - dry process.This thesis is based on RS and GIS technology , taking a number of multi-phase and remote sensing image as data sources, such as MSS, TM, ETM+, ASTER, extracting the information Aiding Lake area of the lake; DEM as the introduction of the calculation of the lake volume, and we have a good Results. With meteorological factors, and using geographically statistical analysis revealed Aiding Lake causes of the status quo, and provide a theoretical basis and basic data for the environmental changes. Through this work, preliminary conclusions are as follows:â‘ through different periods in the remote sensing image processing, using NDWI(Normalized Difference Water Index) lake information extraction method estimate the corresponding phase of the lake area.â‘¡use of remote sensing images with Aiding Lake DEM data extraction lake elevation information, estimates the lake volume under different Aiding Lake areaâ‘¢use of mathematical statistical methods that meteorological factors in the average temperature, precipitation and the lake area between good correlation, and the establishment of the model; further inference of a nearly 35a Aiding Lake inter annual changes and surface changes year law.â‘£from natural, man-made factors of two Aiding Lake reasons for the changes, and further verified that Aiding Lake is a seasonal lake.