Global distribution and sources of dissolved inorganic nitrogen export to the coastal zone: Results from a spatially explicit, global model

E Dumont; J. A Harrison; C Kroeze; E. J Bakker; S. P Seitzinger

doi:10.1029/2005GB002488

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Global distribution and sources of dissolved inorganic nitrogen export to the coastal zone: Results from a spatially explicit, global model

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Global distribution and sources of dissolved inorganic nitrogen export to the coastal zone: Results from a spatially explicit, global model

E Dumont, J. A Harrison, C Kroeze, E. J Bakker and S. P Seitzinger

Global biogeochemical cycles, Vol.19(4), pp.GB4S02-n/a

Dumont, E., J. A. Harrison, C. Kroeze, E. J. Bakker, and S. P. Seitzinger (2005), Global distribution and sources of dissolved inorganic nitrogen export to the coastal zone: Results from a spatially explicit, global model, Global Biogeochem. Cycles, 19, GB4S02

12/2005

DOI: https://doi.org/10.1029/2005GB002488

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https://hdl.handle.net/2376/113074

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Abstract

DIN

river export

nitrogen cycling

anthropogenic effects

surface water quality

agricultural systems

Here we describe, test, and apply a spatially explicit, global model for predicting dissolved inorganic nitrogen (DIN) export by rivers to coastal waters (NEWS‐DIN). NEWS‐DIN was developed as part of an internally consistent suite of global nutrient export models. Modeled and measured DIN export values agree well (calibration R2 = 0.79), and NEWS‐DIN is relatively free of bias. NEWS‐DIN predicts: DIN yields ranging from 0.0004 to 5217 kg N km−2 yr−1 with the highest DIN yields occurring in Europe and South East Asia; global DIN export to coastal waters of 25 Tg N yr−1, with 16 Tg N yr−1 from anthropogenic sources; biological N2 fixation is the dominant source of exported DIN; and globally, and on every continent except Africa, N fertilizer is the largest anthropogenic source of DIN export to coastal waters.

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Title: Global distribution and sources of dissolved inorganic nitrogen export to the coastal zone: Results from a spatially explicit, global model
Creators: E Dumont - Wageningen University
J. A Harrison - Rutgers University
C Kroeze - Wageningen University
E. J Bakker - Wageningen University
S. P Seitzinger - Rutgers University
Publication Details: Global biogeochemical cycles, Vol.19(4), pp.GB4S02-n/a
Academic Unit: Harrison Research Group: Global Change and Watershed Biochemistry ; Environment, School of the (CAS)
Publisher: Blackwell Publishing Ltd
Edition: Dumont, E., J. A. Harrison, C. Kroeze, E. J. Bakker, and S. P. Seitzinger (2005), Global distribution and sources of dissolved inorganic nitrogen export to the coastal zone: Results from a spatially explicit, global model, Global Biogeochem. Cycles, 19, GB4S02
Number of pages: 13
Identifiers: 99900547675501842
Language: English
Resource Type: Journal article