Assessment of karst rocky desertification using the radial basis function network model and GIS technique: a case study of Guizhou Province,China |
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Authors: | Huang Qiu-hao Cai Yun-long |
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Institution: | (1) Department of Resources, Environment and Geography, College of Environmental Sciences, Peking University, 100871 Beijing, Peoples Republic of China |
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Abstract: | Karst rocky desertification in karst areas of Southwest China is an obstacle for the sustainable development of the locality.
While many researchers have studied this issue, this study quantified the various indicators affecting desertification, using
GIS technology to extract spatial data and to construct a RBFN (radial basis function network) model for Guizhou province.
By calibrating sample data of the different levels of karst rocky desertification, the model parameters were established,
and then the assessment of karst rocky desertification. Results show that in counties of Southwestern Guizhou Province karst
rocky desertification is severe, counties in northern Guizhou have moderate desertification, and southeastern counties are
affected lightly. Comparison of the results with other research shows conformity with actual conditions, proving the reasonability
and applicability of the RBFN model. |
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Keywords: | Karst rocky desertification Radial basis function network (RBFN) Assessment Guizhou province China |
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