Reliance and effect of sediment bulking on the physicochemical properties of sediments in aquatic environments

	Reliance and effect of sediment bulking on the physicochemical properties of sediments in aquatic environments
	Wang, Chunliu; Yao, Zongbao; Huang, Lei; Fang, Hongwei; Jiang, Helong
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020
卷号	723
英文摘要	Sediment bulking is intently related to the occurrence of black water agglomerate, sediment resuspension and erosion in aquatic environments. In this study, five different lake sediments were sampled to study effects of sediment characteristics on sediment bulking and then investigate how sediment bulking affected in turn sediment physicochemical properties. Within 30 days of experiments, the sediment properties showed an obvious influence on variation in sediment height (VSH) ranging from only 0.03 to 1.26 cm for five sediment samples. It was found that labile nutrients were closely related to the VSH (P < 0.05) during sediment bulking. In addition, the high-throughput sequencing revealed that the microbial communities in sediments associated with degradation of organic matter and anaerobic environments, were also related to sediment bulking. Through comparing sediments with and without bulking, it was found that sediment bulking would clearly increase the proportion of air around 2.14 times, and reduce the critical shear stress of sediment with a decrease by 67.33% after 30 days, which favored sediment resuspension and erosion. Thus, this study could provide a deep insight in the key factors and the environmental effects of sediment bulking, and then be helpful in protecting the aquatic environments against ecological disasters. (C) 2020 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20003]
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	Wang, Chunliu,Yao, Zongbao,Huang, Lei,et al. Reliance and effect of sediment bulking on the physicochemical properties of sediments in aquatic environments[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,723.
APA	Wang, Chunliu,Yao, Zongbao,Huang, Lei,Fang, Hongwei,&Jiang, Helong.(2020).Reliance and effect of sediment bulking on the physicochemical properties of sediments in aquatic environments.SCIENCE OF THE TOTAL ENVIRONMENT,723.
MLA	Wang, Chunliu,et al."Reliance and effect of sediment bulking on the physicochemical properties of sediments in aquatic environments".SCIENCE OF THE TOTAL ENVIRONMENT 723(2020).