DOI: 10.1007/s10533-015-0124-1
Scopus记录号: 2-s2.0-84941880521
论文题名: Increasing dissolved nitrogen and phosphorus export by the Pearl River (Zhujiang): a modeling approach at the sub-basin scale to assess effective nutrient management
作者: Strokal M. ; Kroeze C. ; Li L. ; Luan S. ; Wang H. ; Yang S. ; Zhang Y.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 125, 期: 2 起始页码: 221
结束页码: 242
语种: 英语
英文关键词: Nitrogen
; Phosphorus
; Sub-basin scale modeling
; The Pearl River
Scopus关键词: agricultural management
; basin analysis
; coastal water
; dissolved inorganic nitrogen
; dissolved inorganic phosphorus
; ecosystem modeling
; environmental management
; eutrophication
; globalization
; model validation
; nutrient cycling
; nutrient dynamics
; nutrient use efficiency
; pollutant source
; sewage
; streamwater
; China
; Guangdong
; Zhujiang Basin
英文摘要: The Pearl River (Zhujiang in Chinese) has been exporting excess of nitrogen (N) and phosphorus (P), causing eutrophication in the coastal waters of southern China for decades. However, sources of these nutrients and their locations are not well studied for the Pearl River basin. As a consequence, it is difficult to formulate effective management options to reduce these nutrients in the river and to prevent further eutrophication. We developed a sub-basin model based onto the Global NEWS-2 (Nutrient Export from WaterSheds) model for the period of 1970–2050 to analyze trends in dissolved inorganic N and P (DIN and DIP) and to identify the main sources of these nutrients and their locations. We validated our model by comparing modeled nutrient fluxes with observed. Future analyses are based on Millennium Ecosystem Assessment scenario that assumes a globalized world with a reactive environmental management. DIN and DIP inputs to the coastal waters are calculated to increase by a factor of 2–2.5 between 1970 and 2050. Over two-thirds of the DIN and DIP inputs to the coastal waters stem from two down-stream basins (Zhujiang delta and Dongjiang), where agriculture and sewage are important drivers of this increase. Agriculture accounts for over 40 % of DIN inputs to coastal waters. Sewage and agriculture account for over 90 % of DIP inputs. Thus nutrient management in agriculture and sewage in down-stream areas is more effective in reducing coastal eutrophication than nutrient management in up- and middle-stream areas of the Pearl River basin. © 2015, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83471
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Environmental Systems Analysis Group, Wageningen University, Droevendaalsesteeg 4, Wageningen, Netherlands; Science & Technology, School of Science, Open University of the Netherland, Valkenburgerweg 177, Heerlen, Netherlands; Peking University, University Town, Nanshan District, Shenzhen, China
Recommended Citation:
Strokal M.,Kroeze C.,Li L.,et al. Increasing dissolved nitrogen and phosphorus export by the Pearl River (Zhujiang): a modeling approach at the sub-basin scale to assess effective nutrient management[J]. Biogeochemistry,2015-01-01,125(2)