The relations between land use and karst rocky desertification in a typical karst area, China

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	The relations between land use and karst rocky desertification in a typical karst area, China
	Li Yang-Bing ; Shao Jing-An ; Yang Hua ; Bai Xiong-Yong
	2009
关键词	Climatology Groundwater Hydrogeology Land use Limestone Soils Vegetation
英文摘要	Karst rocky desertification (KRD) is one major type of desertification which is under irrational human impact on the vulnerable eco-geo-environment. In this study, Zhudong fengcong rocky desertification landscape was selected to investigate the land use types distribution law in different rock types and the KRD land in different land use types. KRD data was determined by user-computer interactive interpreting method from Aster images in 2004, according to the exposed ratio of rock, the coverage of vegetation and soil in 0.2 km² unit, integrating with land utilizing present situation map, hydrogeology map, relief map, vegetation map, soil distribution map, as well as the practical investigation and the population census datum in 2002. Results showed that the occurrence ratio of KRD land is different in land use types and rocky assemblages obviously; land cover has a strong impact upon KRD. The sloping cropland distributed in homogenous limestone has a higher occurrence ratio of light KRD, secondly, is in the limestone interbedded with clastic rock. Light KRD land was dominated by shrubland, and sloping cropland accounts for 11.67% of it, moderate KRD land was dominated by moderate coverage grass slopes, strong and extremely strong KRD was dominated by rocky dry land which is difficult to use. © 2008 Springer-Verlag.
出处	Environmental Geology
卷	57 期:3 页:621-627
收录类别	EI
语种	英语
内容类型	EI期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/24797]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Li Yang-Bing,Shao Jing-An,Yang Hua,et al. The relations between land use and karst rocky desertification in a typical karst area, China. 2009.