In view of the soil-water resources carrying capacity(SWRCC)system's uncertainty, an improved set pair analysis(SPA) model is suggested that utilizing SPA theory and the malleability of the original relation degree to extend the comprehensive evaluation ranking of SWRCC from 3 levels to 5 levels. The model can be used for obtaining the SWRCC level in different cities of Guanzhong area based on 20 influential factors of SWRCC, the SWRCC factors weights are obtained by combining the subjective factor weights and entropy weights to allocate the weight more reliable. The SWRCC comprehensive evaluation results of proposed model is compared with the results of improved fuzzy comprehensive evaluation to prove the rationality of improved SPA. The results of the research firstly demonstrate that the Guanzhong SWRCC ranking at the level of Ⅲ means a basic balance except Xianyang and Weinan which were overload in 2008. Then it shows the evaluation results of improved SPA are reliable, reasonable and visualized, and the improved SPA is a scientific and practical evaluation method that can more meticulously describe the SWRCC level.
NAN Cai-yan, SU Xiao-ling
. Comprehensive Evaluation for Soil-Water Resources Carrying Capacity in Guanzhong Area Based on Improved Set Pair Analysis[J]. JOURNAL OF NATURAL RESOURCES, 2012
, 27(1)
: 104
-114
.
DOI: 10.11849/zrzyxb.2012.01.011
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