Water Resources Adjustment And Control In Yellow River Basin

The carrying capacity of water resources and water environment in Yellow River basin is faced with a huge challenge, such as vegetation destruction, water and soil erosion, riverbed run-up, watercourse shrinkage, water shortage, frequency breakage flow, severity pollution, water quality deterioration, trace to the source and sendiment, coast erosion and regradation. Put forward the new water resources allocation concept - "Keep the Yellow River healthy life", it is favored for us to scientifically know the carrying capacity of water resources and water environment in order to rational deal with and exploitation in the Yellow River basin. Only does it achieve four standards - "embankment not burst, watercourse not breakage, water quality not beyond standard, riverbed not run-up", the Yellow River has being enormous avail value. In this paper, combined with the Major State Basic Research Development Program, the adjustment and control theory, method, model, and technology are studied, the aim of which is to make some helpful tries to the Yellow River problems. The main research content and results are as follows:( 1 ) The problems and challenge confronted in Yellow River water resources application are pointed out, Analysis on water resources supply and requirement contradiction in mid and long term of the Yellow River. From the two facets studied water resources adjustment and control projects that combined with multi-methods and multi-measures including opening source, saving water, fathering pollution and some engineering measures.(2) Discussed and studied on the modern water resources adjustment and control theory. From the viewpoint of large-scale system analyzed two coincidence systems in water resources system, namely water quantity-water quality-eco system and social economy-water resources-time and space adjustment and control system. The synergetics theory and dissipative structure theory are introduced in water resources system. Competition and synergetics functions exist in three subsystems. Adjustment and control function is to harmonize the relationships among economy, social and eco subsystems and to keep homeostasis among systems, so that water resources system can realize favorable cycle and evolvement.(3) On base of synergetics theory, the order parameters of Yellow River water resources multi-dimension critical control are selected, and the threshold values are confirmed. The order degree for subsystem of Yellow River water resources is established, which are the basis of critical control. Study on water resources adjustment and control evolvement rules, the order degree and mechanism of water resources auto-probe optimal introduced by system entropy variety were built up to introduce water resources optimal allocation.(4) Through allocating water resources adjustment and control 36 projects of 2010, 2020, 2030 and 2050 in the Yellow River, solved prepared projects and analyzed adjustment results. Strategic allocation project is chosen for water resources sustainable utilization in Yellow River basin and keep it healthy life, at the same time rationality and feasibility of this adjustment and control theory and method are validated.