| 王忠静,杨芬,赵建世,何杉.基于分布式水文模型的水资源评价新方法[J].水利学报,2008,39(12): |
| 基于分布式水文模型的水资源评价新方法 |
| New approach for water resources assessment based on distributed hydrological model |
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| DOI： |
| 中文关键词: 分布式水文模型 水资源评价 UCMV 下垫面变化 永定河山区流域 |
| 英文关键词: distributed hydrological model water resources assessment UCMV underlying change Yongding River Basin |
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| 中文摘要: |
| 为解决变化环境条件下水资源评价中的“还原失真”和“还原失效”问题，本文提出基于物理参数的分布式水文模型用于变化环境下水资源评价方法的原理和假定，以及基于此原理利用上游测站流量进行模型参数率定和中游测站进行验证(简称UCMV，Up reach for Calibration and Mid reach for Validation)的水资源评价新方法。以永定河山区流域为实例，进行了不同时期下垫面的水资源评价。结果表明，流域1990年和2000年下垫面条件下多年平均地表水资源量分别为10.799和9.892亿m3，后者相对于前者产流能力降低了8.0%，清楚地表现出下垫面变化对流域产流能力的影响，也进一步证实了“还原失效”现象的存在以及基于物理分布式水文模型进行变化环境下的水资源评价的有效性。 |
| 英文摘要: |
| The theory and basic assumption of distributed hydrological for water resources assessment under various environment is introduced to solve the problems of restoration distortion and restoration invalidation in traditional method. A method, namely UCMV (up reach for calibration and mid reach for validation), based on parameter calibration by up stream runoff station and verification by validation mid stream station is developed. As a case study, the water resources assessment for the Yongding River basin under different underlying surfaces is carried out. The result shows that the average annual surface water resources for underlying surface in 1990 is 1.080 billion m3, and is 0.989 billion m3 in 2000, the corresponding runoff generation ability reduction is 8.0%. It clearly indicates the effect of underlying change on runoff generation ability. It also shows that the problems of restoration distortion and restoration invalidation exists and the application of distributed hydrological model to assessment of the water resources under changed environment is effective. |
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