Based on the distributed hydrology soil vegetation model ( DHSVM) , two-period recession curves of the hydrographs were adopted according to the characteristics of flood recessions and geological conditions. Considering the hydraulic contacts of bedrock fissure water in the water cycle, we modified DHSVM in this study. A case study was conducted in the Xingfeng Basin in the Dongjiang red-soil hilly region. Vegetation, soil, and bedrock fissure parameters were determined based on remote sensing ( RS ) data as well as field and laboratory experiments. Hydrological and meteorological observation data from 2003 to 2008 were used for parameter calibration and model verification. The perturbation analysis method was used for sensitivity analysis, in order to study how the changes of the model parameters influence runoff and evapotranspiration. The results show that, when the modified DHSVM is used, the fissure aquifer can be used to regulate runoff, and the model can simulate low flow better and increase the accuracy of hydrological processes simulation.%利用分布式水文-土壤-植被模型( DHSVM)，根据枯期径流2段退水规律，建立基岩裂隙水运动的计算方法，实现了DHSVM的改进。根据东江星丰流域地形、土壤、植被及水文地质特征，采用现场观测、遥感资料分析及室内试验等手段，确定星丰流域植被、土壤、基岩裂隙特征参数。利用2003-2008年实测气象、水文资料进行参数率定和模型验证。采用扰动分析法分析改进的DHSVM参数对径流、蒸散发影响的灵敏度。结果表明：改进的DHSVM实现了裂隙含水层对径流的调节，能更好地模拟枯期基流，提高了流域水文过程的模拟精度。
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