气候变化领域集成服务门户(CCPortal): Changes of inundation area and water turbidity of Tonle Sap Lake: Responses to climate changes or upstream dam construction?

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DOI	10.1088/1748-9326/abac79
	Changes of inundation area and water turbidity of Tonle Sap Lake: Responses to climate changes or upstream dam construction?
	Wang Y.; Feng L.; Liu J.; Hou X.; Chen D.
发表日期	2020
ISSN	17489318
卷号	15 期号:9
英文摘要	Using long-term Moderate Resolution Imaging Spectroradiometer (MODIS) and Landsat satellite observations, the inundation changes of Tonle Sap Lake between 1988 and 2018 were investigated. The results show that the inundation area was stable before 2000, followed by a significant shrinking trend between 2000 and 2018. Quantitative remote sensing retrievals for concentrations of the total suspended sediments (TSS) also demonstrate an evident increasing trend (7.92 mg l-1yr-1) since 2000. A strong correlation (R2 = 0.67) was found between the annual mean inundation area and concurrent precipitation in a region located in the lower basin of the Mekong River (mostly outside the drainage basin of Tonle Sap Lake). A multiple general linear model (GLM) regression further pointed to the precipitation variation as a major contributor (76.1%) to the interannual fluctuation of the inundation area, while the dams constructed in China only contributed to 6.9%. The limited impacts of Chinese dams on the inundation area of the lake could be revealed through the limited fraction of water discharge from the Mekong River within China (∼17%). The analysis also found significant impacts of inundation changes on the recent lake turbidity increase in the dry seasons. We clearly revealed that the contribution of dam construction in China to the recent lake shrinkage was insignificant when compared with the impacts of the precipitation decrease. The results of this study provide important scientific evidence for settling water volume-related transboundary disputes regarding the control of the inundation area and water turbidity of Tonle Sap Lake. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	inundation; Landsat; MODIS; remote sensing; Tonle Sap; turbidity
语种	英语
scopus关键词	Catchments; Climate change; Dams; Lakes; Radiometers; Remote sensing; Suspended sediments; Turbidity; Concurrent precipitation; General linear modeling; Interannual fluctuations; Moderate resolution imaging spectroradiometer; Precipitation variation; Quantitative remote sensing; Scientific evidence; Total suspended sediments; Floods; climate effect; dam construction; discharge; drainage basin; Landsat; MODIS; satellite altimetry; shrinkage; suspended sediment; turbidity; Cambodia; Mekong River; Tonle Sap Lake
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153764
作者单位	School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China; Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden
推荐引用方式 GB/T 7714	Wang Y.,Feng L.,Liu J.,et al. Changes of inundation area and water turbidity of Tonle Sap Lake: Responses to climate changes or upstream dam construction?[J],2020,15(9).
APA	Wang Y.,Feng L.,Liu J.,Hou X.,&Chen D..(2020).Changes of inundation area and water turbidity of Tonle Sap Lake: Responses to climate changes or upstream dam construction?.Environmental Research Letters,15(9).
MLA	Wang Y.,et al."Changes of inundation area and water turbidity of Tonle Sap Lake: Responses to climate changes or upstream dam construction?".Environmental Research Letters 15.9(2020).