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[1]WANG Xiao-yan,XU Zhi-gao.Spatial and Temporal Variation Features of Rocky-desertification in Karst Area Based on RS and GIS Technology-A Case Study of Cili County, Hu’nan Province[J].Research of Soil and Water Conservation,2008,15(05):7-10.

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Spatial and Temporal Variation Features of Rocky-desertification in Karst Area Based on RS and GIS Technology-A Case Study of Cili County, Hu’nan Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 15 Number of periods: 2008 05 Page number: 7-10 Column: Public date: 2008-10-20

Title:: Spatial and Temporal Variation Features of Rocky-desertification in Karst Area Based on RS and GIS Technology-A Case Study of Cili County, Hu’nan Province

Author(s):: WANG Xiao-yan¹, XU Zhi-gao²; 1. College of Civil Engineering and Architecture, Changsha University of Science and Technology, Changsha 410076, China;
2. State Forestry Administration Central South Forest Investigating and Planning Institute, Changsha 410014, China

Keywords:: rocky-destertification; spatial and temporal changes; land utilization; Karst Area; Cili county

CLC:: X171.1;TP79

DOI:: -

Abstract:: Using Cili county as the study area, through contrasting and analyzing the aerial images of 1990 and 2003, the spatial and temporal changes characters of rocky-desertification was studied in this paper by using RS and GIS technology. The results show that control and destruction are coexited in Cili county, but the destruction intensity is larger than that of controling, and rocky-desertification situation has becoming more serious. There are efficient controling and conversion in lighter and middle degree rocky-desertification area while ineffictive in extreme degree rocky-desertification area. The amelioration rate of rocky-desertification land is lower than the deterioration rate of unrocky-desertification land. The rocky-desertification was mostly taken place in countryside. The first task should be prevention in ecological environment construction in Karst area. Protection should be taken into account seriously in latent rocky-desertification area and the controlling emphsis should be on barren hill suitable for forest. The transfomation of agriculture industrial structue and traditional cultivation model is the emphsis in the future.

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