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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 13, issue 6
Biogeosciences, 13, 1787–1800, 2016
https://doi.org/10.5194/bg-13-1787-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 13, 1787–1800, 2016
https://doi.org/10.5194/bg-13-1787-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 23 Mar 2016

Research article | 23 Mar 2016

Effects of different N sources on riverine DIN export and retention in a subtropical high-standing island, Taiwan

Jr-Chuan Huang et al.

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The mean riverine DIN export of 49 watersheds in Taiwan is ∼ 3800 kg N km−2 yr−1, 18 times the global average. The mean riverine DIN export ratio is 0.30–0.51, which is much higher than the average of 0.20–0.25 of large rivers around the world, indicating excessive N input relative to ecosystem retention capacity. The DIN export ratio is positively related to agriculture input, and levels of human disturbance and watersheds with high DIN export ratios are likely at advanced stages of N excess.
The mean riverine DIN export of 49 watersheds in Taiwan is ∼ 3800 kg N km−2 yr−1, 18 times the...
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