DOI: 10.1007/s10533-017-0330-0
Scopus记录号: 2-s2.0-85017141336
论文题名: Advances in NANI and NAPI accounting for the Baltic drainage basin: spatial and temporal trends and relationships to watershed TN and TP fluxes
作者: Hong B. ; Swaney D.P. ; McCrackin M. ; Svanbäck A. ; Humborg C. ; Gustafsson B. ; Yershova A. ; Pakhomau A.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 133, 期: 3 起始页码: 245
结束页码: 261
语种: 英语
英文关键词: Anthropogenic nutrient inputs
; Baltic watershed
; NANI
; NAPI
; Total nitrogen
; Total phosphorus
Scopus关键词: anthropogenic effect
; crop production
; drainage basin
; eutrophication
; fertilizer application
; nitrogen
; nutrient cycling
; nutrient enrichment
; phosphorus
; sewage treatment
; spatiotemporal analysis
; watershed
; Atlantic Ocean
; Baltic Sea
; Danish Straits
; Gulf of Riga
英文摘要: In order to assess the progress toward eutrophication management goals, it is important to understand trends in land-based nutrient use. Here we present net anthropogenic nitrogen and phosphorus inputs (NANI and NAPI, respectively) for 2000 and 2010 for the Baltic Sea watershed. Overall, across the entire Baltic, between the 5-year periods centered on 2000 and 2010, NANI and NAPI decreased modestly by −6 and −4%, respectively, but with substantial regional variation, including major increases in the Gulf of Riga drainage basin (+19 and +58%, respectively) and decreases in the Danish Straits drainage basin (−25 and −40% respectively). The changes were due primarily to changes in mineral fertilizer use. Mineral fertilizers dominated inputs, at 57% of both NANI and NAPI in 2000, increasing to 68 and 70%, respectively, by 2010. Net food and feed imports declined over that period, corresponding to increased crop production; either fewer imports of food and feedstocks were required to feed humans and livestock, or more of these commodities were exported. A strong linear relationship exists between regional net nutrient inputs and riverine nutrient fluxes for both periods. About 17% of NANI and 4.7% of NAPI were exported to the sea in 2000; these relationships did not significantly differ from those for 2010. Changes in NANI from 2000 to 2010 across basins were directly proportional rather than linearly related to changes in total N (TN) fluxes to the sea (i.e., no change in NANI suggests no change in TN flux). Similarly, for all basins except those draining to the Baltic Proper, changes in NAPI were proportional to changes in total P (TP) fluxes. The Danish Straits decreased most between 2000 and 2010, where NANI and NAPI declined by 25 and 40%, respectively, and corresponding fluxes of TN and TP declined 31 and 18%, respectively. For the Baltic Proper, NAPI was relatively unchanged between 2000 and 2010, while riverine TP fluxes decreased 25%, due possibly to lagged effects of fertilizer reduction resulting from socio-political changes in the early 1990s or improvements in sewage treatment capabilities. For most regions, further reductions in NANI and NAPI could be achieved by more efficient production and greater substitution of manure for imported mineral fertilizers. © 2017, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83274
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: Department of Ecology and Evolutionary Biology, Cornell University, Corson Hall, Ithaca, NY, United States; Division of Water Resources, North Carolina Department of Environmental Quality, 1611 Mail Service Center, Raleigh, NC, United States; Baltic Sea Centre, Stockholm University, Stockholm, Sweden; Russian State Hydrometeorological University, Malookhtinsky pr. 98, St. Petersburg, Russian Federation; Central Research Institute for Complex Use of Water Resources, Minsk, Belarus
Recommended Citation:
Hong B.,Swaney D.P.,McCrackin M.,et al. Advances in NANI and NAPI accounting for the Baltic drainage basin: spatial and temporal trends and relationships to watershed TN and TP fluxes[J]. Biogeochemistry,2017-01-01,133(3)