Arid
DOI10.1002/clen.201400773
Modeling and Evaluating of Non-Point Source Pollution in a Semi-Arid Watershed: Implications for Watershed Management
Du, Xinzhong1,2; Su, Jingjun1; Li, Xuyong1; Zhang, Wangshou1,2
通讯作者Li, Xuyong
来源期刊CLEAN-SOIL AIR WATER
ISSN1863-0650
EISSN1863-0669
出版年2016
卷号44期号:3页码:247-255
英文摘要

Watershedmodels are cost-effective and powerful tools for evaluating and controlling non-point source (NPS) pollution. Generalized Watershed Loading Functions (GWLF) model, a relative parsimonious model, was applied to simulate watershed streamflow and nutrient loads in Liu River watershed, northern China. The model results were used to evaluate watershed NPS load, and the implications for NPS pollution mitigation measures were investigated. The temporal-spatial distribution, the critical source areas (CSAs) at sub-watershed level, and the best management practices (BMPs) efficiencies at CSAs were investigated by GWLF model. Due to the contrasting hydrological conditions, the NPS loads of wet year and flood season were much more than those of dry year and non-flood season. Four sub-watersheds were identified as CSAs, and the results showed that CSAs had high level of load intensities due to the high percentage of agricultural land and residential land. Through evaluating the efficiency and cost of seven BMPs, conservation tillage and vegetative buffers were selected as the measures to implement in the CSAs, and they can reduce 14.2% and 12.5% of total nitrogen and total phosphorus NPS loads in Liu river watershed. These findings can provide valuable information for implementing more effective and reasonable management measures to control NPS pollution in Liu River watershed and indicate the utility of GWLF with modest data requirements for such application.


英文关键词Best management practices Critical source areas GWLF model Nutrient load Temporal-spatial distribution
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000372953200004
WOS关键词CRITICAL SOURCE AREAS ; INDEX APPLICATION ; MAINLAND CHINA ; RIVER ; PHOSPHORUS ; NUTRIENT ; NITROGEN ; LOAD ; SCALE ; SIMULATION
WOS类目Green & Sustainable Science & Technology ; Environmental Sciences ; Marine & Freshwater Biology ; Water Resources
WOS研究方向Science & Technology - Other Topics ; Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/192073
作者单位1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China;
2.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Du, Xinzhong,Su, Jingjun,Li, Xuyong,et al. Modeling and Evaluating of Non-Point Source Pollution in a Semi-Arid Watershed: Implications for Watershed Management[J],2016,44(3):247-255.
APA Du, Xinzhong,Su, Jingjun,Li, Xuyong,&Zhang, Wangshou.(2016).Modeling and Evaluating of Non-Point Source Pollution in a Semi-Arid Watershed: Implications for Watershed Management.CLEAN-SOIL AIR WATER,44(3),247-255.
MLA Du, Xinzhong,et al."Modeling and Evaluating of Non-Point Source Pollution in a Semi-Arid Watershed: Implications for Watershed Management".CLEAN-SOIL AIR WATER 44.3(2016):247-255.
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