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	SWAT分布式流域水文物理模型的改进及应用研究
其他题名	Improvement and Application of SWAT--A Physically Based, Distributed Hydrological Model
	张东; 张万昌; 朱利; 朱求安
来源期刊	地理科学
ISSN	1000-0690
出版年	2005
卷号	25 期号:4 页码:434-440
中文摘要	SWAT(Soil and Water Assessment Tool)模型是一个集成遥感(RS)、地理信息系统(GIS)和数字高程模型(DEM)技术的先进的分布式流域水文物理模型.为了推动该模型在中国的适应性研究及应用,并改进模型以提高水文模拟的精度,针对模型在中国西北寒旱区的黑河流域和中西部温润的汉江流域的水文模拟中发现的问题进行了扩充和改进,增加了土壤粒径转换模块和天气发生器(WGEN)数据预处理模块,改进了模型中的WGEN算法、潜在蒸散量模拟算法以及气象参数的空间离散方法.利用扩充和改进后的模型对汉江褒河上游江口流域的降雨-径流过程进行了系统的研究.结果表明,不仅模型的使用效率有明显提高,而且改进后模型的效率系数和相关系数也比改进前有较大改善.
英文摘要	SWAT (Soil and Water Assessment Tool) model is an advanced, physically based, distributed hydro-logical model that is integrated with Remote Sensing (RS), Geographic Information System (GIS) and Digital Elevation Model (DEM) techniques. In order to impel its application study in China and improve the simulation precision of the model in hydrological process studies, some expansions and improvements were made to the mod-eling system for the real conditions on arid, semi-arid Heihe River Basin in the northwestern China and humid Hanjiang River Basin in middle-western China. Firstly, soil grain size transferring module and data pre-process-ing module for weather generator ( WGEN) were added to original SWAT model to encounter the inconsistent problems existed in data standard utilized in Euramerican and Chinese systems. And then the further improve-ments to the model were done focusing on; 1) three new spatial interpolation methods, including Inverse Dis-tance Weighing method (IDW), Thiessen polygonal method and DEM-based PRISM method, were used as a new choice to replace the original interpolation method that takes the meteorological data from the nearest weather station as the representative weather data for each sub-basin. 2) An advanced approach was proposed to modify the original method in daily maximum and minimum temperature estimations in SWAT for avoiding the logical mistakes in temperature simulations. 3) An areal evapotranspiration estimation module based on improved Pen-man-Monteith method was developed to replace the original approaches used in SWAT. At last the offline experi-ment on rainfall-runoff simulations were conducted using the meteorological, land use/cover and soil data from the Jiangkou Basin, the Hanjiang River by means of the improved SWAT model and its original version. The de-tailed study suggested a significant improvement of modeling performance by the fact that in model calibration pe-riod, the Nash-Sutcliffe Criterion (NSC) and correlation coefficient were improved from 0.47 and 0.79 to 0. 92 and 0.98 respectively, while in validation period, they were improved from 0.08 and 0.68 to 0.94 and 0.97 ac-cordingly. The improved SWAT model and its software packs will impel the application studies in the relevant disciplines in China.
中文关键词	SWAT模型 ; 土壤粒径转换 ; 天气发生器 ; 蒸散量 ; 空间插值
英文关键词	SWAT model soil grain size transfer weather generator evapotranspiration spatial interpolation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:2023642
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205990
作者单位	南京大学国际地球系统科学研究所, 南京, 江苏 210093, 中国
推荐引用方式 GB/T 7714	张东,张万昌,朱利,等. SWAT分布式流域水文物理模型的改进及应用研究[J],2005,25(4):434-440.
APA	张东,张万昌,朱利,&朱求安.(2005).SWAT分布式流域水文物理模型的改进及应用研究.地理科学,25(4),434-440.
MLA	张东,et al."SWAT分布式流域水文物理模型的改进及应用研究".地理科学 25.4(2005):434-440.