干旱区生态环境知识资源中心(Arid): 用HYDRUS-2D和RETC数值模型反推土壤水力参数的特点分析

Arid

	用HYDRUS-2D和RETC数值模型反推土壤水力参数的特点分析
其他题名	Characteristic analysis of soil hydraulic parameters in inversely process by using HYDRUS-2D and RETC numerical models
	张吉孝; 张新民; 刘久如; 金建新; 王文娟
来源期刊	甘肃农业大学学报
ISSN	1003-4315
出版年	2013
卷号	48 期号:5 页码:161-166
中文摘要	以甘肃省石羊河流域下游民勤沙漠绿洲区砂质壤土和粘土为试验材料,借助HYDRUS-2D和RETC数值模型对Van Genuchten模型中alpha、n 2个参数进行反推土壤水力参数.利用沟灌土壤水分二维入渗试验实测资料评价各个模型的准确性;计算沟灌入渗特征量:累计入渗量、湿润锋位置、土壤剖面含水量分布相关系数R~2和均方根误差RMSE.结果表明:HYDRUS-2D反推参数模型与RETC土壤水分运动参数模型软件求得的参数模拟结果基本满足试验精度要求,但两者相比,前者更符合沟灌二维入渗实际过程,获得的结果更加准确可靠.研究结果为土壤水分运移模型的预测分析奠定了基础.
英文摘要	HYDRUS-2Dand RETC numerical models were employed for evaluatingalphaand n of Van Genuchten model,selected sandy loam and clay for an example in the Minqin desert oasis,downstream of Shiyang River Basin of Gansu.The accuracy of each model was evaluated by using the measured data of experiments on furrow irrigation two-dimensional infiltration.As well as calculating the correlation coeffcient(R~2)and root mean square error(RMSE)of infiltration characteristics:soil water cumulative infiltration capacity,wetting fronts position and water content distribution.It was showed that HYDRUS-2Dinverse solution model and RETC soil water movement parameters model soft were basically kept with the accuracy requirements of the experiments.But comparing the two numerical models,the former was more in line with the actual of the process under furrow irrigation two-dimensional infiltration,and the results obtained were more accurate and reliable.The research has laid a foundation for the analysis predictive of soil moisture transport model.
中文关键词	土壤水力参数 ; 数值模型 ; 反推参数 ; 沟灌
英文关键词	soil hydraulic parameter numerical model inverse parameter furrow irrigation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ENGINEERING
WOS研究方向	Agriculture
CSCD记录号	CSCD:4997375
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229466
作者单位	甘肃农业大学工学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	张吉孝,张新民,刘久如,等. 用HYDRUS-2D和RETC数值模型反推土壤水力参数的特点分析[J]. 甘肃农业大学,2013,48(5):161-166.
APA	张吉孝,张新民,刘久如,金建新,&王文娟.(2013).用HYDRUS-2D和RETC数值模型反推土壤水力参数的特点分析.甘肃农业大学学报,48(5),161-166.
MLA	张吉孝,et al."用HYDRUS-2D和RETC数值模型反推土壤水力参数的特点分析".甘肃农业大学学报 48.5(2013):161-166.