Evaluation index system and evaluation models for regional humanwater harmony
KANG Yan, CAI Huan-Jie, SONG Song-Bai
(1.College of Water Resources and Architecture Engineering, Northwest A＆F University, Yangling, Shaanxi 712100, China； 2. Key Lab of Agricultural Soil and Water Engineering in Arid Areas, Ministry of Education, Northwest A&F University, Yangling, Shaanxi 712100, China)
In order to evaluate regional humanwater harmony, the concept of humanwater harmony was introduced and, based on complex system theory and harmony theory, a set of indicators to evaluate regional humanwater harmony was established. With set pair analysis theory and variable fuzzy set theory, set pair analysisvariable fuzzy set model was set up to analyze the development trend of humanwater system. An ideal development state of a system was determined in the spirit of cooperative game theory; a cooperative game distance coordination degree model was established to evaluate coordination degrees of humanwater system. On the bases of development trend and coordination degree, a multiplicative synthesis model is used to evaluate regional humanwater harmony degree. The abovementioned models were applied to assess the humanwater harmony degree of humanwater system from the year 2000 to 2009 in Shaanxi province. The results show that the humanwater harmony degrees were on a slow increasing trend, but still in grade I and II, disharmony and critical harmony. It indicated the level of humanwater harmony in Shaanxi province was still rather low, which is in close accordance with the fact in Shaanxi province. Comparison with fuzzy comprehensive evaluation model showed similar results, which proves the feasibility of the models and reliability of results.
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