摘要
以具有黑龙江省西部半干旱区典型气象和水文特征的阿伦河流域为例,基于研究区下垫面条件的调查,对土壤垂直剖面进行了模型化,并利用GIS构建了研究区DEM及河网,以运动波理论的基础方程构建了降雨—径流计算模块,以能量平衡法建立了融雪计算模块,构建了耦合融雪的分布式水文模型。通过对2012年和2013年融雪及降雨—径流过程计算结果的分析,分别推求了由融雪产生的径流量、雨季各月以及年径流量和径流系数。结果表明:模型计算精度在基准误差允许范围之内;2012年和2013年3月1日—4月15日的融雪径流量分别占当年径流总量的1.44%、0.86%。
In the current study, the Alun River basin, with typical meteorological and hydrological characteristics of a semiarid area of western Heilongjiang Province, was chosen as the study area. Modeling of the vertical soil profile was conducted based on the investigation of physical properties of the underlying topography. A digital elevation model ( DEM) and the river channel network of the study area were generated by ArcGIS. Rainfall-runoff and snowmelt modules were developed using kinematic wave equations and the energy budget method, respectively, and a distributed hydrological model for combining the snowmelt and the rainfall-runoff modules was developed. Both annual and monthly runoff, runoff coefficient, and snowmelt runoff amounts were estimated through analyzing runoff calculation results from 2012 to 2013. The results indicate that the calculation accuracy of the model is within the allowable range of the error criterion; snowmelt runoff in the period from March 1 to April 15 accounted for 1. 44% and 0. 86% of total annual runoff in 2012 and 2013, respectively.
出处
《人民黄河》
CAS
北大核心
2015年第11期18-24,共7页
Yellow River
基金
国家自然科学基金资助项目(41271046)
扬州大学科学研究启动基金资助项目(5015-137010583)
扬州市"绿扬金凤计划"优秀博士科研基金资助项目(yzlyjfjh2013YB105)
关键词
数值计算
降雨-径流过程
分布式水文模型
融雪
半干旱区
阿伦河流域
numerical calculation
rainfall-runoff process
distributed hydrological model
snowmelt
semiarid land region
Alun River basin
