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引用本文:刘晓帆,任立良,徐静,袁飞.基于双源蒸散和混合产流的分布式水文模型构建及应用--以辽河老哈河流域为例.湖泊科学,2011,23(2):174-182. DOI:10.18307/2011.0203
LIU Xiaofan,REN Liliang,XU Jing,YUAN Fei.Development and application of the distributed hydrologic model based on the two-source PET model and the hybrid runoff model:A case study of Laoha River catchment, Liaohe River Basin. J. Lake Sci.2011,23(2):174-182. DOI:10.18307/2011.0203
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基于双源蒸散和混合产流的分布式水文模型构建及应用--以辽河老哈河流域为例
刘晓帆1,2, 任立良2, 徐静3, 袁飞2
1.四川省交通厅交通勘察设计研究院, 成都 610017;2.河海大学水文水资源与水利丁程科学国家重点实验室, 南京 210098;3.南京大学地球科学与工程学院水科学系, 南京 210093
摘要:
以北方半干旱地区的辽河老哈河流域为研究对象, 采用网格离散化方法进行水文模拟单元划分, 利用具有物理基础的双源蒸散发能力估算模型, 计算每个栅格单元的截留蒸发、植被蒸腾能力和土壤蒸发能力, 并取代蒸发皿资料作为混合产流模型的蒸散发能力输入, 从而构建摹于双源蒸散与混合产流的分布式水文模型, 并对老哈河流域1970-1979年的日径流过程进行模拟分析, 结果表明双源蒸散发能力计算模型能够考虑植被类型及其生理、物候特性对蒸散发能力的影响, 将其与混合产流模型进行嵌套构建的分布式水文模型能较合理地揭爪研究区域的产汇流规律, 适用于该地区的水文过程模拟。
关键词:  蒸散发  混合产流  植被覆盖  半干旱区  老哈河流域
DOI:10.18307/2011.0203
分类号:
基金项目:国家重点基础研究发展计划(973)项目(2006CB400502)、教育部和国家外专局高等学校学科创新引智计划项目(B08048)和教育部科学技术研究重大项目(308012)联合资助
Development and application of the distributed hydrologic model based on the two-source PET model and the hybrid runoff model:A case study of Laoha River catchment, Liaohe River Basin
LIU Xiaofan1,2, REN Liliang2, XU Jing3, YUAN Fei2
1.Sichuan Communication Surveying and Design Institute, Chengdu 610017, P.R.China;2.State Key Laboratory of Hydrology, Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, P.R.China;3.Department of Hydrosciences, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, P.R.China
Abstract:
The Laoha River catchment, Liaohe River Basin in the semi-arid region of northern China is selected for study.The interception evaporation, canopy transpiration and soil evaporation are computed by a physically-based two-source potential evapo-transpiration model in each grid cell of the basin.The calculated potential evapotranspiration is regarded as the input of the hybrid runoff model instead of the pan evaporation.Then the grid-based distributed hydrologic model is built for daily runoff simulation during 1970-1979 in the target basin by coupling the two-source PET model in the hybrid runoff model framework.The results show that the two-source PET model can reflect the effects of vegetation type, vegetation physiological features and phonological characteristics on the evapotranspiration.And the grid-based distributed hydrologic model which can illuminate the rule of runoff generation and runoff routing is applicable for runoff simulation in the target basin.
Key words:  Evapotranspiration  hybrid runoff  land cover  semi-arid region  Laoha River catchment
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