Study On Integral Management Strategy Of The Shiyanghe Basin

Watershed as a society-economics-nature system, to feed human being, irrigates the farmland, purify the environment with abundant water resources, and provide a strong economic recovery power with it's valuable resource. For a long time, watershed ecology and resources was over-developed, and has induced water resource imbalance and environmental degradation. The Shiyang River Basin locates in the arid region, where water resource is scarce, and the contradiction between water supply and demand is becoming more and more severe, the population density is the largest in all inland river basins in the Hexi Corridor of Northwest China. Water resource over-utilization, desertification and other ecological problems, leaded to economic and social unsustainable development in Shiyang River Basin. The essence problems is serious uncoordinated relationship of the human being and nature in Shiyang River Basin. This paper analyze the regular of water resource formation and evolution, and important question and forecast the water supply and demand in the future in Shiyang River Basin. We work out a integrated management of Shiyang River Basin,and use the logical framework approach to evaluate the effect of integrated management. The folllowing results are achieaved:1.Water resource can not load bearing population and can not hold out the economic and social development and can not keep the ecological health in Shiyang River Basin.2.we need to take the comprehensive management of social, economic, ecological and water resource protection measures in Shiyang River Basin. Social progress should be people-oriented, provide more jobs, establish a social security system, strengthen public health, and build up a harmonious socialist society. Economic progress should develop recycling economic and desert industry and tertiary industry, cultivate new economic growth point, optimize the industrial layout, and building major function oriented zones of different types. Strengthen the building of transport and energy, developing a new industrialization, building of new socialist countryside, according to local conditions the development of county economy. Eco-management strategy should adhere to the "protect water sources in south region, building the oasis in middle area, control desert in north region" . Water resources protection to build a water conservation society system as the basic way, to increase the levels of water protection, to fully utilize and protect water resources in desert. To establish water management institutions of water right, reform systems of family allocate water, management system of farm water-saving as the main body. To build water pricing reforms system by control the total amount of water quota, and collection agriculture water resources excise.3.Model of logical framework about appraisal of harness effect on Shiyang River Basin is established. Target of vertical structure is effect on ecology and Socioeconomic, object is Governance and water-saving measures of Shiyang River Basin, output is water-saving, water resources allocation, ecological protection and water resources management and protection, input is construction of water-saving society, adjustment of industrial structure, guaranty engineering of water resources allocation, water-saving transformation engineering, ecology and protection engineering ,protection engineering of water resources and infrastructure construction of water resources management. Key harness planning ,approval, implement and acceptance of feasibility design, reform water rights and prices and participation mechanism of management as basic assumption of level structure ,engineering investment, water-saving amount, water transfer amount and decrement amount of underground as verification index, spot records, completion acceptance report ,statistic yearbook and report of monitoring and evaluation as verification method. Using the model evaluated effect ion on key harness of Shiyang River Basin in 2007-2008, the results showed that it saved 37729 million m3 and reduced the exploitation amount of underground 16634 million m3 In 2008 than in 2007, discharged 550 million m3 of Caiqi section of Minqin, it increased 37% than last three years . It achieved remarkable results of key harness projects.4. A system dynamics model is established to predict the effects of comprehensive harness in Shiyang River Basin. Using the model analyzed the economic, social and ecological effects of comprehensive harness, evaluated the social influence factors, social adaptation and risk factors, predicted future changes in ecological and economic and social impacts of comprehensive harness in 2010 and 2020. It is concluded that downward trend in underground water level of Minqin Oasis will essentially under control, water resources utilization and ecological environment construction and protection will more coordinated, green corridor of Minqin downstream will be saved and restored. The prediction conclusion that natural vegetation will be protected will further strengthened the confidence to carry out comprehensive harness.