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《Resources and Environment in the Yangtze Basin》 2002-06
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QUANTITATIVE STUDY ON HEIGHT DIFFERENTIATION OF LAND USE DEGREE IN THE SUBURBAN COUNTY OF WUHAN CITY BASED ON SPATIAL OVERLAYING ANALYSIS

WANG Hongzhi\+\{1,2\},LI Rendong\+3,WU Hehai\+1 (1.Faculty of Resource and Environment Science, Wuhan University, Wuhan 430079, China;2.Institute of Ecology, Hubei University, Wuhan 430062, China;3.Institute of Geodesy and Geophysics,The Chinese Academy of Sciences, Wuhan 430062, China)  
The data of land use composition in different height zones can be obtained through the spatial overlaying analysis of the land use with the DEM. Based on the data, the height differentiation of small scale landuse degree in Jiangxia area of Wuhan was studied.The land use structure in different height zones and the quantitative height differentiation of land use degree were analyzed.It is found that the land use structures obviously change vertically through the land use composition in different height zones.The amount of every land use type in lower zones is absolutely more than that of higher zones. And, with the increase of height, the types and the diversification of land use decrease obviously. Meanwhile, it is found that the land use degree appears in different regularity at above 40m or below 40m through the analysis by comprehensive index of land use degree. Above 40m, the land use degree declines with the increase of height. When the nature logarithm of the height increases 1,land use degree index declines 42.718. Below 40m, the land use degree increases with the increase of height.In contrast with the traditional method to coarsen and disperse the spatial data to administration unit, the spatial overlaying analysis can greatly diminish the loss of spatial information.
【Fund】: 中国科学院知识创新工程重大项目(KZCX2-310-01-02)和(KZCX1-Y-02)资助.
【CateGory Index】: F301.24
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