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	Evaluating phosphorus loss for watershed management: integrating a weighting scheme of watershed heterogeneity into export coefficient model
	Li, Sisi1,2; Zhang, Liang1; Du, Yun1; Liu, Hongbin3,4; Zhuang, Yanhua1; Liu, Shuzhi5
刊名	Environmental modeling & assessment
	2016-10-01
卷号	21期号:5页码:657-668
关键词	Spatial-temporal variation Export coefficient model Critical source areas Critical source periods Non-point source Management
ISSN号	1420-2026
DOI	10.1007/s10666-016-9499-1
通讯作者	Zhang, liang(lzhang@whigg.ac.cn) ; Liu, hongbin(liuhongbin2002@126.com)
英文摘要	The identification of critical source areas (csas) and critical source periods (csps) are essential prerequisites for cost-effective practices of non-point source (nps) pollution control. a simple empirical tool combining export coefficient model (ecm) and a geographic information systems (gis)-based weighting scheme of watershed heterogeneity was proposed to estimate annual and monthly phosphorus loss, to identify critical source areas and periods, and to assess pollution control practices. the gis-based weighting scheme was developed to represent the transport potential of runoff to move phosphorus from the land surfaces to waters, as a supplement to the source-based ecm. the empirical tool was applied to the dianchi lake watershed of china. the results showed that the total phosphorus loss from nps in 2008 was 352.3 tons. the agricultural land was recognized as the largest and the most spatially various source type. the lakeside plain and the terraces of the watershed were identified as csas, which generated more than 90 % of non-point phosphorus. the early part of wet season (from may to august) was the csps, when about 70 % of non-point phosphorus was lost. the reduction of phosphorus fertilizers and the vegetated buffer strips (vbs) were effective in controlling phosphorus loss from nps in the watershed. a reduction of 20 % in phosphorus fertilizer application combined with the set-up of vbs in both riparian area of the main watercourses and the lakeside areas would decrease 25 % of phosphorus loss.
WOS关键词	NONPOINT-SOURCE POLLUTION ; SOURCE NITROGEN ; LOAD ESTIMATION ; SURFACE RUNOFF ; BUFFER ZONES ; RIVER ; EFFICIENCY ; RETENTION ; CHINA ; REDUCTION
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000381993700008
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2376221
专题	中国科学院大学
通讯作者	Zhang, Liang; Liu, Hongbin
作者单位	1.Chinese Acad Sci, Inst Geodesy & Geophys, Key Lab Environm & Disaster Monitoring & Evaluat, Wuhan 430077, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Minist Agr, Key Lab Nonpoint Source Pollut Control, Beijing 100081, Peoples R China 4.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China 5.Kunming Inst Environm Sci, Kunming 650032, Peoples R China
推荐引用方式 GB/T 7714	Li, Sisi,Zhang, Liang,Du, Yun,et al. Evaluating phosphorus loss for watershed management: integrating a weighting scheme of watershed heterogeneity into export coefficient model[J]. Environmental modeling & assessment,2016,21(5):657-668.
APA	Li, Sisi,Zhang, Liang,Du, Yun,Liu, Hongbin,Zhuang, Yanhua,&Liu, Shuzhi.(2016).Evaluating phosphorus loss for watershed management: integrating a weighting scheme of watershed heterogeneity into export coefficient model.Environmental modeling & assessment,21(5),657-668.
MLA	Li, Sisi,et al."Evaluating phosphorus loss for watershed management: integrating a weighting scheme of watershed heterogeneity into export coefficient model".Environmental modeling & assessment 21.5(2016):657-668.

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