IMHE OpenIR  > 山地灾害与地表过程重点实验室
Improvement of LCM model and determination of model parameters at watershed scale for flood events in Hongde Basin of China
Jun Li1; Chang-ming Liu2
Corresponding AuthorJun Li
2017
Source PublicationWater Science and Engineering
ISSN1674-2370
Volume10Issue:1Pages:36-42
Abstract

Considering the fact that the original two-parameter LCM model can only be used to investigate rainfall losses during the runoff period because the initial abstraction is not included, the LCM model was redefined as a three-parameter model, including the initial abstraction coefficient λ, the initial abstraction Ia, and the rainfall loss coefficient R. The improved LCM model is superior to the original two-parameter model, which only includes r and R, where r is the initial rainfall loss index and can be calculated with λ using the Soil Conservation Service curve number (SCS-CN) method, with r=1/(1+λ). The trial method was used to determine the parameter values of the improved LCM model at the watershed scale for 15 flood events in the Hongde Basin in China. The results show that larger r values are associated with smaller R values, and the parameter R ranges widely from 0.5 to 2.0. In order to improve the practicability of the LCM model, r=0.833 with λ=0.2 is reasonable for simplifying calculation. When the LCM model is applied to arid and semi-arid regions, rainfall without yielding runoff should be deducted from the total rainfall for more accurate estimation of rainfall-runoff.

KeywordFloods Infiltration Runoff Soil Conservation Watersheds
DOI10.1016/j.wse.2017.03.006
Indexed ByEI
Language英语
Accession numberAccession number: 20171603574866
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20740
Collection山地灾害与地表过程重点实验室
Affiliation1.Key Laboratory of Mountain Hazards and Earth Surface Processes, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
2.Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research,
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Jun Li,Chang-ming Liu. Improvement of LCM model and determination of model parameters at watershed scale for flood events in Hongde Basin of China[J]. Water Science and Engineering,2017,10(1):36-42.
APA Jun Li,&Chang-ming Liu.(2017).Improvement of LCM model and determination of model parameters at watershed scale for flood events in Hongde Basin of China.Water Science and Engineering,10(1),36-42.
MLA Jun Li,et al."Improvement of LCM model and determination of model parameters at watershed scale for flood events in Hongde Basin of China".Water Science and Engineering 10.1(2017):36-42.
Files in This Item:
File Name/Size DocType Version Access License
E1 Improvement of LC(1582KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Jun Li]'s Articles
[Chang-ming Liu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Jun Li]'s Articles
[Chang-ming Liu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Jun Li]'s Articles
[Chang-ming Liu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: E1 Improvement of LCM model and determination of model .pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.