Yanqi Basin Water Resources Development And Exploitation Comprehensive Evaluation

Abundant of water and soil, Yanqi Basin, with mild climate, has large areas of fine bulrushes and pasture. Its vast water areas make the resources of water power very plenteous. But from 1950s and 1960s, blindly enlarging the fields for tilling and excessively irrigating caused rising of the water table of Yanqi Basin, and soil salinization of the irrigated areas. That also leads to acceleration of water salinization, dissent of water level of Bosteng Lake, and deterioration of the environment around the lake. The quantity and quality of water in peafowl River cannot be guaranteed thereby.Based on the problems existing during the exploitation and utilization of water resources of Yanqi Basin, by using mathematical modeling, the present thesis quantizes those problems after experts' confirmation, and further studies the exploitation and utilization of water resources of Yanqi Basin.This thesis puts emphasis on the index system and approaches for evaluation of the exploitation and utilization of water resources of that basin. First of all, the concept of water resources, the signification and the three stages of the exploitation and utilization of water resources are expounded. Then the significance of evaluating the exploitation and utilization of water resources in certain region; the status quo of the development of society, economy, environment and water resources in Yanqi Basin are elaborated. Grounded on that, referring to the principles of establishing the index system of exploitation and utilization of water resources in regions concerned, aiming at the special conditions of Yanqi Basin and the source of statistics, this thesis establishes the index system for evaluation of the exploitation and utilization of water resources of Yanqi Basin. This system includes 46 indexes in 4 layers: goal layer, criterion layer, field layer, and index layer. Through multistage fuzzy judge model and analytical hierarchy process, the specific percentages of each index in the system, and the grades standard of basic evaluation indexes have been determined. For the basic indexes' tendency of sustainable developing, it can be divided into 5 grades: worst, worse, medium, preferably, and very good. This thesis has verified the coherence of judge matrix in AHP after processing statistics with software MATLAB, and educed the status of all indexes in the system after establishing judge matrix with software VB. The result shows that the exploitation and utilization of water resources of Yanqi Basin is "worse", in the weak period of sustainable development, but it is developing towards sustaining.In the end, this thesis analyzes the problems existing in the exploitation and utilization of water resources of Yanqi Basin, and then puts forward suggestions and measures to the sustainable economy development mode of Yanqi Basin, referring to the advantages of Yanqi Basin's resources, putting emphasis on exploitation and utilization of water resources, aiming at region's sustainable development.Studying the evaluation index system and approaches, doing quantitative assessment for the status of sustaining of Yanqi Basin's water resources can reflect, very roundly and deeply, the development level of the basin's water resources and its harmony with society, economy, and environment, which has great theoretical and practical values for actualizing the strategy of sustainable utilizing water resources of Yanqi Basin.