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| Relationship between land use/land cover and rocky desertification in karst areas:Houzhai catchments in Puding County,Guizhou Province an example |
| Li Yangbing1,2,Wang Shijie3,Cheng Anyun3,Luo Guangjie1 |
| 1.College of Geography and Environmental Science,Guizhou Normal University,550001,Guiyang;2.College of Geography Science,Chongqing Normal University,400047,Chongqing;3.State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,CAS,550002,Guiyang:China |
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Abstract The paper aim at elucidating the essential characteristics of rocky desertification land based on the characteristics of land use/land cover and rocky desertification in southwestern karst areas in China.Houzhai catchments in Puding County,Guizhou Province was chosen as a case study to clarify the relationship between land use/land cover and rocky desertification according to the remote image of different seasons.So,this paper suggests that the characteristics of land use or land cover should be taken into consideration when discriminating rocky desertification,and reveals that rocky desertification land is those whose annual vegetation coverage lower than 10%,characterized by poorly grey coverage;while potential ones are those grass slope lands,characterized by seasonal single peak type green coverage from ecological succession viewpoint.This method which relate land use/land cover to classify and evaluate rocky desertification land,can make each kind of rocky desertification land has a definite meaning,therefore are more accurate and practical,hence more pertinent in the rehabilitation of those desert lands.
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Received: 18 March 2009
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