气候变化领域集成服务门户(CCPortal): Anthropogenic activities altering the ecosystem in Lake Yamzhog Yumco, southern Qinghai-Tibetan Plateau

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DOI	10.1016/j.scitotenv.2023.166715
	Anthropogenic activities altering the ecosystem in Lake Yamzhog Yumco, southern Qinghai-Tibetan Plateau
	Han, Wu; Zhang, Enlou; Sun, Weiwei; Lin, Qi; Meng, Xianqiang; Ni, Zhenyu; Ning, Dongliang; Shen, Ji
发表日期	2023
ISSN	0048-9697
EISSN	1879-1026
卷号	904
英文摘要	Lakes on the Qinghai-Tibet Plateau (QTP) have been subject to multiple environmental pressures from rapid climate change and intensified human activity in recent decades. However, their ecological effects on the lake ecosystem remain largely unclear due to the lack of long-term monitoring data. This study presented the environmental and ecological changes of the lake Yamzhog Yumco (Southern QTP) over the past three decades based on multi-proxy analysis (geochemistry and sedaDNA) on a high-time resolution sediment core. The result showed that the lake exhibited a continuous eutrophication process from 2004 CE, which has accelerated since 2014 CE. The nutrient enrichment was mainly attributed to anthropogenic emissions from the catchment. The sedimentary ancient DNA (sedaDNA) metabarcoding data registered a sensitive response of aquatic communities to the additional nutrient supply. Eukaryotic algae and aquatic invertebrate communities exhibited similar temporal dynamics, characterized by the increase in eutrophic taxa and the decrease in oligotrophic taxa. Change points analysis suggested that lake ecosystems underwent a slight ecological shift in 2003 CE and an abrupt shift in 2012 CE driven by nutrient enrichment. Quantitative analysis revealed that nutrients and human activity accounted for 27.9 % and 21.7 % of the temporal variation in aquatic communities, whereas climate change only explained 6.9 % of the total variation. From a paleolimnological view, our study supported that regional human
关键词	Climate change Anthropogenic activity Nutrient enrichment Qinghai-Tibetan plateau Lake ecosystem sedaDNA
英文关键词	ORGANIC-MATTER; REGIME SHIFTS; CATCHMENT; RESPONSES; COMMUNITIES; SEDIMENTS; QUALITY; REVEAL; CHINA; BASIN
WOS研究方向	Environmental Sciences
WOS记录号	WOS:001072480800001
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/283697
作者单位	Chinese Academy of Sciences; Nanjing Institute of Geography & Limnology, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Nantong University; Nanjing University
推荐引用方式 GB/T 7714	Han, Wu,Zhang, Enlou,Sun, Weiwei,et al. Anthropogenic activities altering the ecosystem in Lake Yamzhog Yumco, southern Qinghai-Tibetan Plateau[J],2023,904.
APA	Han, Wu.,Zhang, Enlou.,Sun, Weiwei.,Lin, Qi.,Meng, Xianqiang.,...&Shen, Ji.(2023).Anthropogenic activities altering the ecosystem in Lake Yamzhog Yumco, southern Qinghai-Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,904.
MLA	Han, Wu,et al."Anthropogenic activities altering the ecosystem in Lake Yamzhog Yumco, southern Qinghai-Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 904(2023).