Indicators for contaminant transport in wetlands

doi:10.1016/j.ecolind.2014.04.034

CORC > 北京大学 > 工学院

	Indicators for contaminant transport in wetlands
	Shao, L. ; Jiang, Z. ; Li, Z. ; Chen, B. ; Hayat, T. ; Ahmad, B. ; Alsaedi, A.
刊名	ecological indicators
	2014
关键词	Urban ecological service Critical length Duration Environmental dispersion Wetland WASTE-WATER TREATMENT MAINSTREAM YELLOW-RIVER ENVIRONMENTAL DISPERSION CONSTRUCTED WETLAND LONGITUDINAL DISPERSION ECOSYSTEM SERVICES SHEAR DISPERSION CHANNEL FLOW FREE-SURFACE EXERGY
DOI	10.1016/j.ecolind.2014.04.034
英文摘要	Wetlands provide significant ecological services for urban regions in terms of water supply, wastewater treatment, flood storage, drought resistance, etc. For wetland flows, it is crucial to understand the process of contaminant transport as it provides scientific support for applications associated with various urban services. Two indicators respectively as the critical length and duration are frequently adopted for risk assessment of incidental release of toxic or contaminant cloud. This paper presents a review on recent progresses in the analytical study of contaminant transport in wetland flows by Taylor dispersion at the phase-average scale. The method of concentration moments is introduced. Analytical procedures for determining the key quantity of Taylor dispersivity are given for typical wetlands with free water surface, respectively as the steady flow wetlands, tidal flow wetlands, and the two-layer flow wetlands. As an example of applications, critical length and duration of the contaminant cloud in the steady flow wetlands are analyzed based on the obtained Taylor dispersivity. Results show that in contrast to the temporary, localized influence of COD on water quality, the heavy metal Pb can give rise to more severe damage. (C) 2014 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000343853000027&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Biodiversity Conservation; Environmental Sciences; SCI(E); EI; 4; ARTICLE; pkulizhi@163.com; aalsaedi@hotmail.com; ,SI; 239-253; 47
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154170]
专题	工学院
推荐引用方式 GB/T 7714	Shao, L.,Jiang, Z.,Li, Z.,et al. Indicators for contaminant transport in wetlands[J]. ecological indicators,2014.
APA	Shao, L..,Jiang, Z..,Li, Z..,Chen, B..,Hayat, T..,...&Alsaedi, A..(2014).Indicators for contaminant transport in wetlands.ecological indicators.
MLA	Shao, L.,et al."Indicators for contaminant transport in wetlands".ecological indicators (2014).