Nutrient dynamics and retention in a vegetated drainage ditch receiving nutrient-rich sewage at low temperatures

doi:10.1016/j.scitotenv.2020.140268

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	Nutrient dynamics and retention in a vegetated drainage ditch receiving nutrient-rich sewage at low temperatures
	Kumwimba Mathieu Nsenga 1,2,3,5; Zhu Bo 3; Wang Tao 3; Dzakpasu Mawuli 4; Li Xuyong 1,2
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020
卷号	741 页码:140268
关键词	Growth characteristics Vegetated drainage ditch Nutrient removal Plant uptake Rural domestic wastewater Winter
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.140268
产权排序	4
文献子类	Article
英文摘要	Vegetated agricultural drainage ditches (VDs) are a relatively new best management practice for pesticide and nutrient mitigation that is receiving increasing global interest. However, VDs are seldom used during winter due to considerable deterioration of pollutants reduction efficiencies driven by low-temperature effects. Limited knowledge on the internal loading of nutrient in VDs due to vegetation decomposition calls for further evaluation. Here, we assessed plants growth characteristics and nutrient dynamics in a field-scale VD receiving nutrient-rich sewage and planted with the overwintering plants: Acorus gramineus, Myriophyllum aquaticum and Iris sibirica. Water purification performance showed average TN, NH4-N, NO3-N, TP and PO4-P reduction efficiencies of 44, 46, 43, 52 and 46%, respectively, over the winter period. Maximum reduction rates of TN and TP were 5.31 and 0.34 g(-2) d(-1), respectively. Of the total nutrient removal by plants of 5.37 x 103 kg N y(-1) and 0.65 x 10(3) kg P y(-1) from the VD system, A. gramineus contributed 65.7% and 72.1%, respectively. Nonetheless, substantial amounts of N and P retained within the aboveground biomass were released into the water column as ditch plant shoots decayed to deteriorate the water quality. All three species, A. gramineus, M. aquaticum and I. sibirica demonstrated considerable nutrient accumulation during winter and facilitated nutrient retention in the VD system. Consequently, they can be considered effective overwintering species of choice in VDs for purifying nutrient-rich water and potentially appropriate for vulgarizing elsewhere, particularly throughout the winter season. (c) 2020 Elsevier B.V. All rights reserved.
电子版国际标准刊号	1879-1026
语种	英语
WOS记录号	WOS:000568817700004
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/46279]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者	Li Xuyong
作者单位	1.University of Chinese Academy of Sciences, Beijing 100049, China; 2.State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, China; 3.Key Lab of Mountain Surface Process and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China; 4.International Science & Technology Cooperation Center for Urban Alternative Water Resources Development, Xi'an University of Architecture and Technology, Xi'an 710055, China 5.Faculty of Agronomy, Department of Natural Resources and Environmental Management, University of Lubumbashi, Democratic Republic of the Congo;
推荐引用方式 GB/T 7714	Kumwimba Mathieu Nsenga,Zhu Bo,Wang Tao,et al. Nutrient dynamics and retention in a vegetated drainage ditch receiving nutrient-rich sewage at low temperatures[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,741:140268.
APA	Kumwimba Mathieu Nsenga,Zhu Bo,Wang Tao,Dzakpasu Mawuli,&Li Xuyong.(2020).Nutrient dynamics and retention in a vegetated drainage ditch receiving nutrient-rich sewage at low temperatures.SCIENCE OF THE TOTAL ENVIRONMENT,741,140268.
MLA	Kumwimba Mathieu Nsenga,et al."Nutrient dynamics and retention in a vegetated drainage ditch receiving nutrient-rich sewage at low temperatures".SCIENCE OF THE TOTAL ENVIRONMENT 741(2020):140268.