Based On Remote Sensing Image To Study On The Issyk-Kul Lake's Change

As an important part of the ecosystem and the geological geomorphology,all aspects of the changes have been much attention and the changes has been influenced by climate change and the influence of the human activities in different degrees.This thesis mainly in Issyk-Kul Lake as the research object,using Landsat Image data of 1990-2014 year by comparing a variety of lake area extraction method to study the area changes,and using TOPEX/Poseidon and ICESAT/GLAS laser altimeter data from 1990 to 2010 year to extract the water level and reflecte the change situation of the water level and relative volume water.In addition,the Landsat image data in 1994?2004 and 2014 year to extract and analyze the change of and use/land cover(LUCC)and NDVI index of vegetation.By comparing these variations with climate,ice change and land use/cover change in its drainage basin to analyze the reason of the Issyk-Kul Lake' change.The main research contents are listed as follows:(1)Through processing the Landsat images of the Issyk-Kul Lake during 1990-2014 year,comparising various water body extraction method,to get the overall characteristics of the change of the water area.(2)Extracting average elevation the ICE/GLAS satellite altimetry data,to get the change situation of water level,and combining with the water level information from 1990 to 2002 years of TOPEX/Poseidon Satellite Altimetry Data provided.Sorting out the wate level change trend of the Issyk-Kul Lake during 1990-2010 year.Using the area and water level changes to calculate the change of relative water content of the basin.(3)Through visual interpretation and corresponding algorithm,processing the remote sensing image data in August 1994?2004 and 2014 year,to get the change situation of the surrounding use/land cover(LUCC)and NDVI index of vegetation in Issyk-Kul Lake.(4)In the light of the area and water level change in Issyk-Kul basion,conduct the climate,glacier and land use/land cover analysis,then get the reason of the change in Issyk-Kul Lake.