|
遥感技术与应用 2008
The Study of Lake Variation Using Remote Sensing near S301 Highway in Tibetan Plateau from 1970 to 2000
|
Abstract:
S301,which joins Naqu and the Ngari area,east meets the Qinghai\|Tibet railway,the Qinghai\|Tibet highway in the National Highway G109 and the north line of Sichuan\|Tibet highway in the National Highway G317,west meets the Xinjiang\|Tibet highway in the National Highway G219,is one important channel for Ngari area.The area which the road through distributes lots of lakes.With global warming,glaciers melting and permafrost degradation,the rising of lake water level brings many potential trouble and disaster to the highway.A better understanding of the lake variations is important for the road.The remote sensing technique is an efficient tool to analyze the status and variations of lakes.The study use topographic maps,aerial photographs,Landsat TM images,and compilations of other relevant data to analyze the changes of the lakes near S301 highway on the Plateau from 1970 to 2000,and to study the impact of the lake changes on the road.The results shown most of the lakes expanded and have affected the safe of the S301 highway.