Temporal and spatial interpolations of water use for coupling simulation of natural and social water cycles

摘要

To simulate or predict flows at river sections in the basins with strong human activities interference, it needs to do a coupling simulation of natural hydrological processes and social water utilization processes. However, while the lumped water use and water supply data (usually in the form of annual regional water use data and reservoir/river and groundwater supply data) can be obtained from the statistical data or bulletins, their temporal and spatial distributions are difficult to acquire. This paper takes the Haihe River Basin as the study target area; a systematic approach for temporal and spatial interpolations of water use is suggested. For water use interpolations, 3 sectors of agriculture, industry and daily life are separately carried out based on the distributions of land use, cropping patterns, precipitation, population and Gross Domestic Product (GDP). The interpolation results for 6 representative years (1980, 1985, 1990, 1995, 2000, and 2005) are obtained and validated both by its distributions and a comparison of observed monthly river flows and simulated ones at several gauge stations which is given by using the WEP (Water and Energy transfer Processes) distributed hydrological model. The suggested approach provides a basis for developing river flow analysis tool.