基于SWAT模型的岩溶地区地下水资源评价

Study on Groundwater Resources in Karst Region in SWAT Model

建立SWAT分布式水文模型来评价岩溶地区地下水资源。选取连江流域为研究对象,采用GIS和RS技术提取水文气象、地形、土壤、土地利用等模型所需要的参数,建立SWAT分布式水文模型来模拟连江流域径流过程,以流域出口黄德高道水文站2008～2010年月流量数据对模型参数进行率定和验证。结果表明,与传统的地下水资源评价方法相比,该方法充分考虑了岩溶区特殊的地质背景和降雨不均等影响因素,精确地模拟了连江流域径流过程,可以用来评价地下水资源量。该研究可为其他岩溶地区地下水资源评价提供借鉴意义。

The research aimed to evaluate groundwater resources in Karst region in SWAT distributed hydrologic model. With Lianjiang Basin as research object, the model requiring parameters is obtained by GIS and RS technology, such as hydrological and meteorological, soil and land use and swat model was used to simulate runoff. Monthly flow rate in Huangde Gaodao station from 2008 to 2010 was used to determine model parameter and verify. The results showed that this method which can simulate accurately the runoff process of Lianjiang basin can be used for the evaluation of groundwater resources takes account of the effective factors such as the special geological background in Karst region and rainfall comparing with the evaluation of groundwater resources in the traditional method. The research could provide reference basis for the evaluation of groundwater resources in Karst region.