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HERO ID
3849544
Reference Type
Journal Article
Title
Long-term increases in soil carbon due to ecosystem fertilization by atmospheric nitrogen deposition demonstrated by regional-scale modelling and observations
Author(s)
Tipping, E; Davies, JAC; Henrys, PA; Kirk, GJD; Lilly, A; Dragosits, U; Carnell, EJ; Dore, AJ; Sutton, MA; Tomlinson, SJ
Year
2017
Is Peer Reviewed?
1
Journal
Scientific Reports
EISSN:
2045-2322
Volume
7
Issue
1
Page Numbers
1890
Language
English
PMID
28507306
DOI
10.1038/s41598-017-02002-w
Web of Science Id
WOS:000401264000002
Abstract
Fertilization of nitrogen (N)-limited ecosystems by anthropogenic atmospheric nitrogen deposition (Ndep) may promote CO2 removal from the atmosphere, thereby buffering human effects on global radiative forcing. We used the biogeochemical ecosystem model N14CP, which considers interactions among C (carbon), N and P (phosphorus), driven by a new reconstruction of historical Ndep, to assess the responses of soil organic carbon (SOC) stocks in British semi-natural landscapes to anthropogenic change. We calculate that increased net primary production due to Ndep has enhanced detrital inputs of C to soils, causing an average increase of 1.2 kgCm(-2) (c. 10%) in soil SOC over the period 1750-2010. The simulation results are consistent with observed changes in topsoil SOC concentration in the late 20(th) Century, derived from sample-resample measurements at nearly 2000 field sites. More than half (57%) of the additional topsoil SOC is predicted to have a short turnover time (c. 20 years), and will therefore be sensitive to future changes in Ndep. The results are the first to validate model predictions of Ndep effects against observations of SOC at a regional field scale. They demonstrate the importance of long-term macronutrient interactions and the transitory nature of soil responses in the terrestrial C cycle.
Tags
•
ISA NOxSOxPM Ecology (2018)
Cited in the Second Draft
Appendix 4
•
ISA NOxSOxPM Ecology (2020- Final Project Page)
Cited
Appendix 4
PFAS
•
PFNA
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