气候变化领域集成服务门户(CCPortal): Lacustrine Record of 1954 Flood Event on Begnas and Rupa Lake, Central Nepal

CCPortal

DOI	10.1111/1755-6724.14543
	Lacustrine Record of 1954 Flood Event on Begnas and Rupa Lake, Central Nepal
	Acharya, Sudip; Li Can-Ge; Ji Kejia; Sun Zhe; Wang Mingda; Hou Juzhi
通讯作者	Wang, MD (通讯作者)
发表日期	2020
ISSN	1000-9515
EISSN	1755-6724
起始页码	717
结束页码	724
卷号	94 期号:3
英文摘要	In recent decades, there have been discussions and predictions regarding the impact of climate on floods, due to its socioeconomic and environmental consequences. For accurate prediction of future flood events and their impacts, it is crucial to have an improved understanding on past flood events. Lacustrine sediments have been used as a natural archive to study the past flood events. Here, we study the impact of 1954 flood event on the lacustrine environment of Bengas and Rupa Lake in central Nepal based on X-ray fluorescence spectrometry (XRF) element analysis, magnetic susceptibility (MS), total organic carbon (TOC) and the biomarker molecular compositions. Results showed that 1954 flood event had significant impacts on the two lakes in terms of detrital input, organic matter deposition and aquatic production. Before the flood event, both two studied lakes had relatively lower catchment erosion rate, lower organic matter deposition and aquatic production. During the flood event, catchment erosion and aquatic production increased in both lakes due to mass transport deposits and the increased nutrition loading attributed to flood event. Following the flood event, Begnas Lake showed the sharp increase in organic matter deposition, whereas in the Rupa Lake organic matter deposition showed minor changes. The difference in organic matter deposition in lakes during flooding event is likely due to detrital material brought and deposited by the flood activity. Overall our results suggest that lacustrine sediments are sensitive to the extreme event and would be an ideal archive for the reconstruction of flood events.
关键词	CLIMATE SEDIMENT VEGETATION
英文关键词	flood; lacustrine environment; Begnas Lake; Rupa Lake; Central Nepal
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000544351300015
来源期刊	ACTA GEOLOGICA SINICA-ENGLISH EDITION
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259692
推荐引用方式 GB/T 7714	Acharya, Sudip,Li Can-Ge,Ji Kejia,et al. Lacustrine Record of 1954 Flood Event on Begnas and Rupa Lake, Central Nepal[J]. 中国科学院青藏高原研究所,2020,94(3).
APA	Acharya, Sudip,Li Can-Ge,Ji Kejia,Sun Zhe,Wang Mingda,&Hou Juzhi.(2020).Lacustrine Record of 1954 Flood Event on Begnas and Rupa Lake, Central Nepal.ACTA GEOLOGICA SINICA-ENGLISH EDITION,94(3).
MLA	Acharya, Sudip,et al."Lacustrine Record of 1954 Flood Event on Begnas and Rupa Lake, Central Nepal".ACTA GEOLOGICA SINICA-ENGLISH EDITION 94.3(2020).