摘要
耦合湿地模块的流域水文模型是开展流域湿地变化的水文效应及其水文功能评估的有效工具,其模拟效率直接关系到模拟精度和应用价值。选取中国湿地主要分布区之一的嫩江流域,利用PHYSITEL/HYDROTEL模型平台,构建孤立湿地和河滨湿地模块并与流域水文模型耦合,并从拟合优度指数和模拟效率角度评价了耦合湿地模块的流域水文模型模拟效率。结果表明,耦合湿地模块的流域水文模型,拟合和验证期间模型的拟合度指数均有所提高,嫩江富拉尔基和大赉水文站控制流域的Nash-Sutcliffe系数和克林效率系数平均提高了3.08%和4.64%,均方根误差和相对偏差平均降低了12.72%和55.93%,且整个研究时段模拟结果的流量指数总体更接近于观测的径流数据。可见,耦合湿地模块的流域水文模型可提高水文过程模拟精度,更好地定量评估湿地水文功能,为流域水资源精准调控与湿地修复保护提供重要支撑。
Watershed hydrological modelling provides a methodology to evaluate the effects of wetlands on stream flow and watershed hydrology. In this study,the PHYSITEL/HYDROTEL modelling platform was used to assess the added-value of specific isolated wetland and riparian wetland modules. To achieve this goal,two sets of simulations were performed (with and without wetland modules) to assess the capacity of the modelling platform with respect to two river segments of the Nenjiang River Basin,Northeast China. The results showed that integration of specific wetland modules can improve the performance of HYDROTEL to simulate both stream flows and effects of wetlands watershed hydrology. During the calibration and validation periods,Nash-Sutcliffe and Kling-Gupta efficiency improved 3.08% and 4.64% and percent bias root and mean squared error decreased 12.72% and 55.93% as a result of the integration of wetland modules,respectively. This explicit assessment framework could be applied to study the effect of wetland restauration and recovery projects on watershed hydrology.
作者
吴燕锋
章光新
齐鹏
Rousseau Alain N
胡宝军
宋峥
于成刚
WU Yanfeng;ZHANG Guangxin;QI Peng;ROUSSEAU Alain N;HU Baojun;SONG Zheng;YU Chenggang(Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,China;University of Chinese Academy of Sciences,Beijing 100049,China;Institut National de la Recherche Scientifique-Eau Terre Environnement,490 rue de la Couronne,G1K 9A9 Quebec,Canada;Nenjiang Ni erji Water Resources and Hydropower Co.,Ltd.,Qiqihar 161005,China;Daxinganling Hydrology Bureau of Heilongjiang Province,Jiagedaqi 165000,China)
出处
《水科学进展》
EI
CAS
CSCD
北大核心
2019年第3期326-336,共11页
Advances in Water Science
基金
国家自然科学基金资助项目(41877160)
国家重点研发计划资助项目(2017YFC0406003)~~
