干旱区生态环境知识资源中心(Arid): Sensitivity Analysis of the Physical Hydrological Model CASC2D-SED in Arid Area

Arid

DOI	10.15244/pjoes/157220
	Sensitivity Analysis of the Physical Hydrological Model CASC2D-SED in Arid Area
	Zhang, Chuancai; Ma, Yanyan; Zhang, Chuanwei; Liu, Huaipeng
通讯作者	Zhang, CC
来源期刊	POLISH JOURNAL OF ENVIRONMENTAL STUDIES
ISSN	1230-1485
EISSN	2083-5906
出版年	2023
卷号	32 期号:2 页码:1927-1940
英文摘要	Sensitivity analysis of model parameters and inputs is an important research method to improve model accuracy and calibration efficiency. The purpose of this paper is to explore the sensitivity of model parameters and model inputs in arid areas, and then to study the linear or nonlinear relationship of model sensitivity taking Erjiama small watershed in Jungar banner, Ordos, Inner Mongolia, China as the research object. Based on the calibration of CASC2D-SED model, four model parameters, including hydraulic conductivity, Manning coefficient, Suction head and vegetation interception, and one model input-river network were perturbed at a variation rate of 25%. The hydrological process is simulated by using the combination of 20 model parameters and model inputs after perturbation, and then the sensitivity analysis of model parameters and inputs is studied. The results show that: 1) The sensitivity of Manning coefficient to peak discharge and peak arrival time is non-linear, while the sensitivity of hydraulic conductivity, Suction head and vegetation interception to peak discharge, peak arrival time, simulated total discharge and infiltration amount is linear; 2) With the increase of hydraulic conductivity, Suction head and vegetation interception, the peak discharge and simulated total discharge decrease gradually, while the peak arrival time and infiltration amount increase gradually; 3) With the increase of Manning coefficient, the simulated total flow decreases gradually, while the infiltration rate increases gradually; 4) With the increase of the number of tributaries, the peak discharge, the simulated total discharge and the total amount of infiltration gradually decrease, while the flood peak arrival time presents a U-shaped change; 5) With the increase of Manning coefficient, hydraulic conductivity, Interception and Suction head, the simulated sediment flow decreases. Manning coefficient is more sensitive to the simulated amount of clay than the other three model parameters. Sensitivity analysis of parameters and inputs of CASC2D-SED model plays a guiding role in model calibration and accurate modeling. This method can be applied to the calibration, structural uncertainty and model application of hydrological models, and has a wide range of application.
英文关键词	hydrological process modeling sensitivity analysis perturbation method model input
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000999356600037
WOS关键词	SIMULATION ; CATCHMENT ; RUNOFF
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398152
推荐引用方式 GB/T 7714	Zhang, Chuancai,Ma, Yanyan,Zhang, Chuanwei,et al. Sensitivity Analysis of the Physical Hydrological Model CASC2D-SED in Arid Area[J],2023,32(2):1927-1940.
APA	Zhang, Chuancai,Ma, Yanyan,Zhang, Chuanwei,&Liu, Huaipeng.(2023).Sensitivity Analysis of the Physical Hydrological Model CASC2D-SED in Arid Area.POLISH JOURNAL OF ENVIRONMENTAL STUDIES,32(2),1927-1940.
MLA	Zhang, Chuancai,et al."Sensitivity Analysis of the Physical Hydrological Model CASC2D-SED in Arid Area".POLISH JOURNAL OF ENVIRONMENTAL STUDIES 32.2(2023):1927-1940.