QQ客服 官方微博 反馈留言

	Comparative study of two models to simulate diffuse nitrogen and phosphorus pollution in a medium-sized watershed, southeast China
	Huang, Jinliang ; Huang JL(黄金良) ; Hong, Huasheng ; Hong HS(洪华生)
	2010-02-10
关键词	non-point source pollution watershed modeling grid-based GIS AnnAGNPS
英文摘要	The aim of this study was to compare and assess two models to calculate diffuse nitrogen and phosphorus emissions in a selected watershed. The GIS-based empirical model and the physically-based AnnAGNPS model were evaluated for comparative purposes. The methodologies were applied for the Jiulong River watershed, covering 14,700 km(2) located in southeast China, with intensive agricultural activities. The calculated loadings by AnnAGNPS model was checked by the measured values at the watershed outlet, whereas the calculated nitrogen and phosphorus emission by GIS-based empirical model spatially provided the potential values in terms of sub-watersheds, districts/counties, and land use type. Both models gave similar levels of diffuse total nitrogen emissions, which also fit well with previous estimates made in the Jiulong River watershed. Comparatively, the GIS-based empirical model gave sound results of source apportionment of non-point source pollution (NPS) froth the available input data and critical source areas identification of diffuse nitrogen and phosphorus pollution. The AnnAGNPS model predicted reasonable nitrogen loading at the watershed outlet and simulated well for NPS management alternatives under changing land use conditions. The study indicated that the GIS-based empirical model has its advantage in extensive studies as a decisions support tool for preliminary design since it is easily applied to large watersheds with fewer data requirements, while AnnAGNPS has its advantage in detailed emission assessment and scenario development. (C) 2009 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1016/j.ecss.2009.04.003]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Huang, Jinliang,Huang JL,Hong, Huasheng,et al. Comparative study of two models to simulate diffuse nitrogen and phosphorus pollution in a medium-sized watershed, southeast China[J],2010.
APA	Huang, Jinliang,黄金良,Hong, Huasheng,&洪华生.(2010).Comparative study of two models to simulate diffuse nitrogen and phosphorus pollution in a medium-sized watershed, southeast China..
MLA	Huang, Jinliang,et al."Comparative study of two models to simulate diffuse nitrogen and phosphorus pollution in a medium-sized watershed, southeast China".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。