Based On Multi-objective Analysis Of Regional Water Resources Sustainable Utilization

The key problem of sustainable development is the sustainable utilization of natural resources. Water resources are important natural resources. The problem of their sustainable utilization has been a hotspot in the water community. The main contents are as follow.Firstly, according to the existing problem of the water resources in our country, the backgrounds of research are ascertained. Based on the description for the basic significance, characteristics and management framework of the sustainable utilization of water resources, the existing states of the demestic and international correlative study are summarized.Secondly, the principles of establishing the index system, the process of filtering the index and the criterion of evaluating the sustainable utilization of water resources are expounded. The common multi-index evaluation methods are reviewed.Thirdly, Analytic Hierarchy Process (AHP) used in muti-objective decision is improved on consistency of judgment matrix and the improved method is used to identify the key factors influencing the sustainable utilization of water resources in Yunnan province. The key factors are effective degree of irrigation, modulus of industrial production value, water supply weight of water project, modulus of water supply and so on. This indicates that the effective degree of irrigation and efficiency of industrial water usage are low in the region, which belongs to engineering type water insufficient district. Water conservancy construction is not satisfied with the development of society and economy. Furthermore, a multi-index comprehensive evaluation model is established and used to assess the sustainability of water resources in Yunnan province. Based on above all, the further measures which insure the sustainable utilization of water resources are put forward in Yunnan province.Fourthly, according to the multi-objective analysis theory, a multi-objective decision model of regional water resources sustainable utilization is established, which pursues the basic objectives such as economical, environmental and social efficacy and subjects them to the carring capacity of regional water resources and so on. The solving techniques of multi-objective decision model are reviewed. The Surrogate Worth Trade-off (SWT)...