韩琳,袁秀忠,张飞云.内陆河流域山区温度和冻土作用下的径流过程模拟[J].中国水利水电科学研究院学报,2017,15(6):460-467
内陆河流域山区温度和冻土作用下的径流过程模拟
Simulation of ruoff process influenced by temperature and frozen soil in Kaidu river basin
投稿时间:2016-05-11  
DOI:10.13244/j.cnki.jiwhr.2017.06.009
中文关键词:  正积温  土壤冻融  融雪径流  开都河流域
英文关键词:positive accumulationtemperature  soil freezing-thaw process  snowmelt runoff  Kaidu river basin
基金项目:新疆维吾尔自治区重点实验室专项资金(2014KL015)
作者单位E-mail
韩琳 黄河水利委员会 信息中心, 河南 郑州 450004  
袁秀忠 黄河水利委员会 水文局, 河南 郑州 450004  
张飞云 新疆农业大学 管理学院, 新疆 乌鲁木齐 830052 feiyun42265@126.com 
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中文摘要:
      在我国西北干旱区以季节性积雪融水为重要补给源的山区流域,温度通过影响土壤冻融循环而间接对径流产生影响。为了更好地模拟以积雪融水为重要补给水源的高寒山区的径流过程,判断不同温度指标以及冻土对径流的影响,本研究以开都河流域为例,通过改进基于系统动力学原理构建的水文模型,分析了用正积温和平均温度估算融雪速率,以及是否考虑冻土影响条件下模型对径流的模拟能力,用相关系数、Nash-Sutcliffe效率系数、均方根误差和观测标准差等评价指标对不同方案下模型的模拟能力进行了评价。结果表明用正积温估算融雪速率同时考虑季节性冻土影响情况下模型的模拟能力最高,从而证实了正积温能够更好地计算积雪融水、模拟融雪径流,且在高寒山区季节性冻土广泛发育的地区,考虑冻土的影响十分必要。
英文摘要:
      In the arid area of Northwest China,temperature can influence the runoff indirectly through soil freezing-thaw circulation affection in the mountain valleys, where the runoff is mainly supplied by seasonal snowmelt water. In order to better simulate its runoff process, judge the influences of different temperature indexes and permafrost on runoff,KaiduRiver Basin was studied as an example area. The runoff was simulated through improving the hydrological model established on system dynamics theory, considering the factors of positive accumulative temperature and average temperature and seasonal frozen soil affection. The results were evaluated by the correlation coefficient,the Nash-Sutcliffe efficiency coefficient (NSE),the root mean square error (RSR) and the percentage bias (PBIAS). The results show that the simulation precision is highest with positive accumulated temperature as well as considering the seasonal frozen soil affection, which confirmed that positive accumulative temperature can better calculate the snowmelt water and the frozen soil influence is an important part in alpine runoff simulation where the seasonal frozen soil is widely developed.
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