Assessment of karst rocky desertification using the radial basis function network model and GIS technique: a case study of Guizhou Province, China

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 co...

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Bibliographic Details
Published in:Environmental geology (Berlin) 2006-04, Vol.49 (8), p.1173-1179
Main Authors: HUANG, Qiu-Hao, CAI, Yun-Long
Format: Article
Language:English
Subjects:
Areal geology. Maps
Assessment
Earth sciences
Earth, ocean, space
Exact sciences and technology
Geologic maps, cartography
Geomorphology, landform evolution
Guizhou province
Karst rocky desertification
Marine and continental quaternary
Radial basis function network (RBFN)
Surficial geology
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Summary: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.
ISSN:0943-0105
1432-0495
DOI:10.1007/s00254-005-0162-4