两种产流模型在通州区水资源计算中的应用比较

Application and Comparison of Two Runoff Yield Models in Water Resources Calculation of Tongzhou Zone

以江苏省南通市通州区为例,分别采用"4种下垫面"与前期影响雨量经验公式法两种模型计算水资源量,并对计算结果进行了对比分析。结果表明,丰水年与平水年两种模型的径流量结果相近,极值分布基本一致,下垫面条件对地表水资源量及地下水资源量影响明显,"4种下垫面"模型的计算结果更符合实际情况。

Four-type-underlying-surface model and empirical formula based on antecedent precipitation are adopted to calculate water resources by taking Tongzhou zone as study case.And the calculation results are analyzed and compared.The results show that there is little difference for both volume and the extreme values in rainy year and median flow year;the volume of surface water and groundwater within the months are affected by the underlying surface obviously;the calculation results of four-type-underlying-surface model are more accordant with the practical situation.