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Par Collection Par Auteur- LIU, G.H. (1)
- YANG, Q.Y. (1)
- YE, Q.H. (1)
- 2000 (1)
- Action anthropique ; Cartographie thématique ; Chine ; Dégradation des sols ; Ecologie appliquée ; Situation critique ; Système d'information géographique ; Utilisation agricole du sol ; Utilisation du sol (1)
- Agricultural land use ; Applied ecology ; China ; Geographical information system ; Human impact ; Land use ; Soil degradation ; Thematic mapping (1)
- A GIS-based mapping method on distribution of critical Ecological Situation in China
- Agricultural land use ; Applied ecology ; China ; Geographical information system ; Human impact ; Land use ; Soil degradation ; Thematic mapping
- Based on analysis of the characteristics of critical Ecological Situation in China with the principle of choosing index, a set of indices on the Ecological Situations in China has been brought out, and the mathematical models for each index has been
- created. With GIS, and data base management system, this paper classifies each index, calculates their weight by county-level unit, and colligate them into a holistic map of the Ecological Situation in China. Analysis from the map indicates
- 2000