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利用分布式时变增益水文模型(DTVGM)的产流机制改进CLM3.5(Community Land Model version 3.5)的水文过程参数化,同时嵌入地下水开采对流域水循环影响的模块,并考虑经济社会用水,建立能够描述流域自然-人文过程的大尺度陆地水循环模型(CLM-DTVGM)。以地下水开采严重的海河流域为研究区,以中科院青藏高原研究所建立的中国区域高时空分辨率地面气象要素数据集作为大气强迫驱动,针对海河流域1980年-2010年的水循环过程进行模拟,分析地下水开采活动对流域水循环过程的影响。结果表明:地下水开采活动引起海河流域地表径流和土壤湿度整体有所减少,蒸散发则呈增加趋势,且各水循环要素空间分异较大。
The flow mechanism of distributed time-varying gain hydrology model (DTVGM) is used to improve the hydrological process parameterization of CLM3.5 (Community Land Model version 3.5), and to embed the module of groundwater exploitation on the water cycle of the basin and take into account economic and social water use A large-scale land-water cycle model (CLM-DTVGM) that can describe the natural-human processes in the basin. Taking the Haihe River basin where groundwater exploitation is serious as the research area, the high temporal and spatial resolution meteorological elements dataset in China, established by the Institute of Tibetan Plateau, Chinese Academy of Sciences, is used as an atmospheric driving force. According to the simulation and analysis of the water cycle in the Haihe River Basin from 1980 to 2010 Influence of Groundwater Exploitation Activities on Water Cycle in River Basin. The results showed that the groundwater runoff caused the overall decrease of surface runoff and soil moisture in the Haihe River Basin, the increase of evapotranspiration, and the greater spatial differentiation of the water cycle elements.