Development and application of dualistic water cycle model in Haihe River Basin: Ⅱ.Strategic research and application for water resources management

The nine integrated water resources management scenarios in the Haihe River Basin(HRB),comprehensively considering factors of the hydro-meteorology,the South to North Water Transfer Projects(SNWTP),the groundwater overexploitation and the control target of river flow into the Bohai Sea,and the current situation of 2005,as well as two future scenarios of 2010 and 2020 planning year level are constructed using the dualistic hydrological cycle model(abbreviated as Dualistic Model).The results are evaluated through the evaluation indices,including GDP,grain output,evapotranspiration(ET),river flow into the sea,total water use and reduced groundwater overexploitation.The optimized scenario is obtained and proposed.Building upon the result of scenario simulations,the future water resources management in the HRB is discussed in the context of controlling of ET,groundwater overexploitation,and flow discharge into the sea.The result shows that in spite of having future water supply from the SNWTP,the measures of strict control of water usages and the consumptions are still essential and necessary in order to gradually reduce the groundwater overexploitation and increase the flow discharge into the Bohai Sea,which will ensure the harmonious development of economy and eco-environment in the HRB.