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Vertical differentiation of land cover in the central Himalayas

Journal of Geographical Sciences 2020年第6期30卷 969-987页

作者： ZHANG Yili WU Xue ZHENG Du Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Re-sources ResearchCASBeijing 100101China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101China University of Chinese Academy of Sciences Beijing 100049China

Characterized by obvious altitudinal variation,habitat complexity,and diversity in land cover,the *** region within the central Himalayas is one of the most sensitive areas to climate change in the *** the same time,because the *** region possesses the most complete natural vertical spectrum in the world,it is also an ideal place to study the vertical structure of alpine land *** this study,land cover data for 2010 along with digital elevation model data were used to define three methods for dividing the northern and southern slopes in the *** region,i.e.,the ridgeline method,the sample transect method,and the sector *** altitudinal distributions of different land cover types were then investigated for both the northern and southern slopes of the *** region by using the above three division methods along with ArcGIS and MATLAB *** results indicate that the land cover in the study region was characterized by obviously vertical zonation with the south-six and north-four pattern of vertical spectrum that reflected both the natural vertical structure of vegetation and the effects of human *** low to high elevation,the main land cover types were forests,grasslands,sparse vegetation,bare land,and glacler/snow *** compositions and distributions of land cover types differed significantly between the northern and southern slopes;the southern slope exhibited more complex land cover distributions with wider elevation ranges than the northern *** area proportion of each land cover type also varied with ***,the vertical distribution patterns of different land cover types on the southern and northern slopes could be divided into four categories,with glaciers/snow cover,sparse vegetation,and grasslands conforming to unimodal *** distribution of bare land followed a unimodal pattern on the southern slope but a bimodal pattern on the northern ***,the use o

关键词： land cover altitudinal zonation central Himalayas mt.Qomolangma mt.Makalu mt.cho oyu

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