IGSNRR OpenIR  > 历年回溯文献
Responses of Sediment Yield to Vegetation Cover Changes in the Poyang Lake Drainage Area, China
Xiao L. L.; Yang, X. H.; Cai, H. Y.
Source PublicationWater
2016
Volume8
Issue4
Keywordsediment yield vegetation cover the location-weighted landscape contrast index soil-erosion semiarid landscapes leakiness index patterns runoff scale ecosystems program spain
AbstractAscertaining the relationships between sediment transport processes and vegetation cover is essential for watershed soil and water conservation. However, it is not easy to realize this target on a large scale. In this study, the location-weighted landscape contrast index (LCI) based on the "source-sink" theory of ecological processes was introduced to unravel the response of sediment yield to vegetation cover changes in the Poyang Lake drainage area (the largest freshwater lake in China). A modified location-weighted landscape contrast index (mLCI) was proposed to improve the accuracy and efficiency of the LCI. The average vegetation fraction of the study area significantly increased from 46.2% in Period I (1992-1994) to 76.5% in Period II (2004-2006) and then slightly decreased to 73.2% in Period III (2011-2013). From Period Ito Period II, the area -specific sediment yield (ASY) sharply decreased by 55%. In Period II, the "source" vegetation patches were found further away from the water bodies, and were more likely to be located on gentler slopes than in Period I. From Period II to Period III, the ASY sharply increased by 83%. In Period III, "source" patches were found closer to the water bodies than in Period II, whereas the "sink" patches were found further away from the water bodies. The high statistical correlation between LCIs/mLCIs and ASY indicated a sensitive response of the sediment yield to vegetation cover changes that significantly altered the sediment transport processes in the study area. The ASY was better correlated with the mLCI than with the LCI. Three key harnessing sub -watersheds of the Ganjiang watershed were identified by calculating the mLCIs: Qingfengshan, Yuanhe, and Jinjiang. This study supported watershed ecological management in the Poyang Lake drainage area and provided a methodology reference for future sediment transport process studies.
Indexed BySCI
Language英语
ISSN2073-4441
DOI10.3390/w8040114
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document TypeSCI/SSCI论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43323
Collection历年回溯文献
Recommended Citation
GB/T 7714
Xiao L. L.,Yang, X. H.,Cai, H. Y.. Responses of Sediment Yield to Vegetation Cover Changes in the Poyang Lake Drainage Area, China. 2016.
Files in This Item: Download All
File Name/Size DocType Version Access License
Xiao-2016-Responses (3640KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Xiao L. L.]'s Articles
[Yang, X. H.]'s Articles
[Cai, H. Y.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Xiao L. L.]'s Articles
[Yang, X. H.]'s Articles
[Cai, H. Y.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Xiao L. L.]'s Articles
[Yang, X. H.]'s Articles
[Cai, H. Y.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Xiao-2016-Responses of Sedimen.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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