气候变化领域集成服务门户(CCPortal): Profiling dynamics of the Southeast Asia's largest lake, Tonle Sap Lake

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DOI	10.1016/j.scitotenv.2024.170444
	Profiling dynamics of the Southeast Asia's largest lake, Tonle Sap Lake
	Jiang, Wenting; Dai, Zhijun; Mei, Xuefei; Long, Chuqi; Binh, Nguyen An; Van, Cong Mai; Cheng, Jinping
发表日期	2024
ISSN	0048-9697
EISSN	1879-1026
起始页码	917
卷号	917
英文摘要	Lakes, as vital components of the Earth's ecosystem with crucial roles in global biogeochemical cycles, are experiencing pervasive and irreparable worldwide losses due to natural factors and intensive anthropogenic interferences. In this study, we investigated the long-term dynamic patterns of the Tonle Sap Lake, the largest freshwater lake in the Mekong River Basin, using a series of hydrological data and remote sensing images between 2000 and 2020. Our findings revealed a significant decline in the annual average water level of the lake by approximately 2.1 m over 20 years, accompanied by an annual average reduction in surface area of about 1400 km2. The Tonle Sap Lake exhibited episodic declines in water level and surface area, characterized by the absence of flooding during the flood season and increasing aridity during the dry season. Furthermore, the shoreline of the lake has significantly advanced towards the lake in the northwestern and southern regions during the dry season, primarily due to sedimentation -induced shallowing of the lake edge depth and decreased water levels. In contrast, lake shorelines in the eastern region remained relatively stable due to the constructed embankments for the protection of the cultivated farmland. While the seasonal fluctuations of the Tonle Sap Lake are regulated by regional precipitation in the Mekong River Basin, the prolonged shrinking of the lake can be mainly ascribed to intensive anthropogenic activities. The interception of dams along the upper Mekong River has resulted in a decrease in the inflow to Tonle Sap Lake, exacerbating its shrinkage. Moreover, there are minor impacts from agricultural land expansion and irrigation on the lake. This study highlights the driving forces behind the evolution of Tonle Sap Lake, providing valuable information for lake managers to develop strategies aimed at conserving and restoring the ecological integrity of the Tonle Sap Lake.
英文关键词	Water level; Runoff; Shoreline; Lake dynamics; Human interferences; Tonle Sap Lake
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001178819900001
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301780
作者单位	East China Normal University; Laoshan Laboratory; Vietnam Academy of Science & Technology (VAST); Thuyloi University; Education University of Hong Kong (EdUHK)
推荐引用方式 GB/T 7714	Jiang, Wenting,Dai, Zhijun,Mei, Xuefei,et al. Profiling dynamics of the Southeast Asia's largest lake, Tonle Sap Lake[J],2024,917.
APA	Jiang, Wenting.,Dai, Zhijun.,Mei, Xuefei.,Long, Chuqi.,Binh, Nguyen An.,...&Cheng, Jinping.(2024).Profiling dynamics of the Southeast Asia's largest lake, Tonle Sap Lake.SCIENCE OF THE TOTAL ENVIRONMENT,917.
MLA	Jiang, Wenting,et al."Profiling dynamics of the Southeast Asia's largest lake, Tonle Sap Lake".SCIENCE OF THE TOTAL ENVIRONMENT 917(2024).