Research on Water Resources Carrying Capacity Based on Set Pair Analysis Evaluation Model

Water resources carrying capacity (for short WRCC) evaluation is the basis of regional development planning, environmental protection and water resources sustainable exploitation. The evaluation result plays a decisive role which decides whether we can work out a reasonable program. In view of the uncertainty of evaluation indicators for WRCC, the model of Set Pair analysis based on entropy weight is proposed to be established, and be applied to WRCC evaluation of 11 cities in Henan province. The evaluation result shows that the overall WRCC is fragile. Nanyang and Pingdingshan have some potential for water resources development with a strong carrying capacity. In the rest cities, water resources development and utilization have been close to saturation. We can see that improving the development and utilization level of water resources is urgent. At last, the result of the model applied to the example is compared with fuzzy comprehensive evaluation model, that shows that the model can avoid effectively subjectivity of weight coefficient computing, and the results are reasonable and satisfactory.