Different storm responses of organic carbon transported to Lake Taihu by the eutrophic Tiaoxi River, China

	Different storm responses of organic carbon transported to Lake Taihu by the eutrophic Tiaoxi River, China
	Liu, Dong; Yu, Shujie; Duan, Hongtao
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2021
卷号	782
英文摘要	Low-frequency high-magnitude storms can flush disproportionate amounts of terrigenous dissolved organic carbon (DOC) and particulate organic carbon (POC) into rivers during a short period. However, previous studies focused on the impacts of storms on organic carbon transport in headwater streams that are minimally influenced by human activities and are far from lakes. To better estimate the lake carbon budget and manage lake water environments, we need to understand the transport of storm-induced organic carbon into lakes by eutrophic rivers. Based on daily and hourly time-series monitoring data, this paper systematically studied the influences of storm precipitation on DOC and POC transport in the eutrophic Tiaoxi River entering Lake Taihu, the 3rd largest freshwater lake in China. The results showed that seven storms transported 59% of the annual total organic carbon into Lake Taihu in 2019, and all storms resulted in transport peaks. During the storm period on August 9-16, 2019, DOC was negatively related to the water level (r = -0.44, p < 0.05), but POC responded positively (r = 0.52, p < 0.05); allochthonous organic carbon contents were elevated, but the autochthonous components were diluted. Moreover, the storm-induced input of riverine organic carbon influenced the lake water environment across a large region, and the impacts lasted more than 10 days. These findings have important implications for accurately estimating riverine organic carbon fluxes into lakes and making better-informed decisions about when to pump drinking water from lakes. (C) 2021 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20438]
专题	中国科学院南京地理与湖泊研究所
推荐引用方式 GB/T 7714	Liu, Dong,Yu, Shujie,Duan, Hongtao. Different storm responses of organic carbon transported to Lake Taihu by the eutrophic Tiaoxi River, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,782.
APA	Liu, Dong,Yu, Shujie,&Duan, Hongtao.(2021).Different storm responses of organic carbon transported to Lake Taihu by the eutrophic Tiaoxi River, China.SCIENCE OF THE TOTAL ENVIRONMENT,782.
MLA	Liu, Dong,et al."Different storm responses of organic carbon transported to Lake Taihu by the eutrophic Tiaoxi River, China".SCIENCE OF THE TOTAL ENVIRONMENT 782(2021).