Distribution Patterns of Permafrost in the Upper Area of Shule River with the Application of GIS Technique
SHENG Yu
LI Jing
WU Ji-chun
YE Bai-sheng
WANG Jie
Abstract：In order to understand the distribution patterns of permafrost in the upper area of the Shule River,based on the methods of field investigation and borehole drilling,as well as theo-retic analysis and model building in doors,the effects of latitude,altitude,slope and aspect on the distribution of permafrost were studied quantitatively and a Regional Permafrost Distribu-tion Model which took the latitude,elevation and the direct incoming solar radiation as the in-putting variables was constructed.Taking ground temperatures of permafrost as the classifica-tion principles of permafrost and with the application of GIS technique,the works of compiling the distribution map of permafrost and analyzing the spatial distribution patterns were carried out.The results show that 1)from the distribution area and the percentage accounting for the whole area,low-temperature permafrost is the major type of permafrost,and then are middle-and high-temperature permafrost,yet the distribution area and the percentage of extreme-high-temperature permafrost are smaller relatively;2)from the distribution pattern of each perma-frost.low-temperature permafrost is distributed mainly in the altitude zone of 4.0-5.0 km,and middle-and high-temperature permafrost are distributed mainly in the altitude zone of 3.5-4.5 km,and extreme-high-temperature permafrost is distributed mainly in the altitude zone of 3.0-4.0 km.
Keywords：permafrostdistribution patternsGISthe upper area of Shule River
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 32-39 )