Assessment on Spatial Distribution of Karst Rocky Desertification at Different Grid Units, Guizhou Province

• 责任者：Li Yangbing (School of Geography and Environmental Sciences ; Guizhou Normal University ; Guiyang 550001 ; China) ; Wang Shijie
• 刊名：Scientia Geographica Sinica
• 出版年：2010
• 卷期：30(1)
• 关键词：石漠化 ; rock desertification ; 贵州 ; Guizhou Province
• 页码：p.98-102
• 图表：3 illus., 2 tables, 20 refs.
• 分类号：1800
• issnNo：ISSN1000-0690
• isbnNo：CN22-1124/P

LIGN: justify">Taking Panxian County as a study case, the authors make a thorough analysis on regional karst rocky desertification assessments and their spatial scale impacts based on different grid units at 100 m×100 m, 200 m×200 m, 500 m×500 m, 1 000 m×1 000 m. The calculation of karst rocky desertification integrated assessment index (KDI) takes the percentage of areas and the patch assembles of grid units into consideration, which could reveals the spatial heterogeneity of karst rocky desertification. The results indicate that the KDI is influenced by assessment unit sizes, and there are some differences among assessment results of four spatial units and the actual distribution of karst rocky desertification.