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《Arid Zone Research》 2004-01
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Discussion on the Weights of the Involved Factors in the Natural Suitability Evaluation of Croplands

YUE Jian, YANG Fa-xiang, LUO Ge-ping, MU Gui-jin (Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China)  
In this paper, some problems, such as the principles of determining and inspecting the weights of the involved factors, the significance and effects of assigning the weights to the factors, the origins and composition of the weights, and the ways and methods of weighting the factors, are discussed. All these are concerned in the natural suitability evaluation of croplands. It is considered that the weight of a factor should be determined by the capability of the factor itself to distinguish the suitability of croplands rather than the general and abstract “importance" or “function" of the factor for a given land use. There should be at least three origins or components of the weight of a factor: a. The relative difficult degree in improving the factor under the same limitation in the contrast region, that is the factor with the relative difficulty is “relatively outstanding", or the factor with a high stability is “relatively outstanding"; b. The factor with a strong dependence upon soil fertility, etc., is “relatively outstanding" in the contrast region; c. The factor with a big disparity is outstanding in the contrast region.
【Fund】: 国家重点基础研究发展规划项目 (973 );; 新疆生态与地理研究所创新领域前沿项目 (KZCX -XJ0 1-0 2 )资助
【CateGory Index】: F301
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