Research On Eco-hydrological Model And The System Of Ziyahe Drainagearea

With the accelerated development of human civilization, rapid growth of thepopulation and some irrational exploitation of the watershed development, a rangeof issues, such as water shortages, environmental degradation, ecological damage,have become increasingly prominent. People is more and more attention to the ideasof "sustainable development" and "man and nature live in harmony".Theeco-hydrological model can provide scientific guidance for the river basin waterresources recycling and ecological sustainable development, which is the theoreticalbasis of the water science research and applications. As a connection bridge betweenthe theoretical result and practical application, eco-hydrological model can not onlyimpetus the improvement of the model development and model theory, but also be theinevitable carrier that theoretical research results effectively services in production.By studying water consumption units in the ecosystem of Ziya Drainage Area, anumerical model of water resources distribution is established to discuss the waterresources planning issues. The system of the eco-hydrological model is developedbased on eco-hydrological model.The quadric surface method is adopted to the interpolation calculation of therainfall in the model. Finite volume method was used to simulate the flow. Model gridwas generated automatically. Module terrain was interpolated, the river channel unitwas generalized. The mechanisms of canopy interception, evaporation, cropevapotranspiration and rainfall infiltration are studied respectively. A hydrodynamicand hydrological model of overland flow concentration and shallow undergroundwater is established to study the water transfer in form of vapour and liquid waterunder the impact of terrain, water potential, wind, atmospheric pressure, sunlight,temperature and so on. Enlightened by the Ecohydrology theories, fresh waterresources in a basin are researched from the rainfall. Two groups of rainstorm data in2008and2005are used to debug and verify the model. The results are of a highaccuracy. This shows that the basic theory of the model is correct and its establishingmethod is feasible.The system uses a GIS component software-MapObjects add a visualprogrammed tool-Visual Basic6.0. Based on the eco-hydrological model, aconvenient and applied mine water hydrological geology information system isdeveloped. Information inquiry system can realizate the browsing, inquiry,information statistics as well as spatial analysis of information including meteorological hydrology information, geological vegetation information, waterconservation environmental information, social economy functions and so oninformation as well as computation auxiliary information. The model establishmentsystem which can make basin grid cutting in half and the network of waterwaysextraction structurization and the modulation will provide for the next hydrologymodel system the hydrology foundation. Debugging and verification system providesconvenient operation for the accuracy of the eco-hydrological model calibration, andeffectively improve the accuracy of the model simulation. Model forecasting systemwill analog computation to the Ziya Drainage Area for next year each water volume, itwill provide scientific guidance for the basin water resources circulation use and theecology sustainable development.