Modeling Regional and Local-scale Permafrost Distribution in Qinghai-Tibet Plateau Using Equivalent-elevation Method

作     者：LI Jing SHENG Yu WU Jichun WANG Jie ZHANG Bo YE Baisheng ZHANG Xiumin QIN Xiang 

作者机构：State Key Laboratory of Frozen Soil Engineering Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China Yunnan Institute of Water Resources and Hydropower Research Kunming 650228 China State Key Laboratory of Cryospheric Science Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China Qilian Shan Station of Glaciology and Ecologic Environment State Key Laboratory of Cryospheric Science Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China 

出 版 物：《Chinese Geographical Science》 (中国地理科学（英文版）)

年 卷 期：2012年第22卷第3期

页      面：278-287页

核心收录：

学科分类：080902[工学-电路与系统] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 0705[理学-地理学] 070501[理学-自然地理学] 

基　　金：Under the auspices of Major State Basic Research Development Program of China(No.2010CB951402) National Natural Science Foundation of China(No.41101067) Foundation for Excellent Youth Scholars of Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences(No.Y184A91001) Research Program of State Key Laboratory of Frozen Soil Engineering of Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences(No.SKLFSE-ZQ-10) 

主　　题：equivalent-elevation method permafrost distribution permafrost lower limit (PLL) Gaussian curve plat- form function Qinghai-Tibet Plateau 

摘      要：This study proposes an equivalent-elevation method to evaluate the integrated effects of latitude and elevation on regional and local-scale permafrost distribution in the Qinghai-Tibet Plateau,and to model the general permafrost-distribution patterns in regional and local-scale *** is found that the Gaussian curve―an empirical model describing the relation between variations of altitudinal permafrost lower limit (PLL) and latitude in the Northern Hemisphere―could be applied in regional-and local-scale areas in the Qinghai-Tibet Plateau in a latitude-sensitive interval of 30°-50°*** curve was then used to evaluate the latitudinal effect on permafrost distribution through transforming the latitudinal effect into a kind of altitudinal difference of *** study then calculated the local equivalent-elevation value by overlaying the altitudinal difference of PLL onto real elevation at a certain *** equivalent-elevation method was verified in an experimental subwatershed of the Qinghai-Tibet ***,feasibility of the method should be further tested in order to extend for future *** use of equivalent-elevation values can build a platform for comparing the regional general permafrost distribution in the plateau,and for basing further evaluations of local factors effects on regional permafrost distribution.