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Positive trends in organic carbon storage in Swedish agricultural soils due to unexpected socio-economic drivers

Poeplau, Christopher and Bolinder, Martin and Eriksson, Jan and Lundblad, Mattias and Kätterer, Thomas (2015). Positive trends in organic carbon storage in Swedish agricultural soils due to unexpected socio-economic drivers. Biogeosciences. 12:11, 3241-3251
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Official URL: http://dx.doi.org/10.5194/bg-12-3241-2015

Abstract

Soil organic carbon (SOC) plays a crucial role in the global carbon cycle as a potential sink or source. Land management influences SOC storage, so the European Parliament decided in 2013 that changes in carbon stocks within a certain land use type, including arable land, must be reported by all member countries in their national inventory reports for greenhouse gas emissions. Here we show the temporal dynamics of SOC during the past 2 decades in Swedish agricultural soils, based on soil inventories conducted in 19881997 (Inventory I), 2001-2007 (Inventory II) and from 2010 onwards (Inventory III), and link SOC changes with trends in agricultural management. From Inventory I to Inventory II, SOC increased in 16 out of 21 Swedish counties, while from Inventory I to Inventory III it increased in 18 out of 21 counties. Mean topsoil (0-20 cm) SOC concentration for the entire country increased from 2.48 to 2.67% C (a relative increase of 7.7 %, or 0.38% yr(-1)) over the whole period. We attributed this to a substantial increase in ley as a proportion of total agricultural area in all counties. The horse population in Sweden has more than doubled since 1981 and was identified as the main driver for this management change (R-2 = 0.72). Due to subsidies introduced in the early 1990s, the area of long-term set-aside (mostly old leys) also contributed to the increase in area of ley. The carbon sink function of Swedish agricultural soils demonstrated in this study differs from trends found in neighbouring countries. This indicates that country-specific or local socio-economic drivers for land management must be accounted for in larger-scale predictions.

Authors/Creators:Poeplau, Christopher and Bolinder, Martin and Eriksson, Jan and Lundblad, Mattias and Kätterer, Thomas
Title:Positive trends in organic carbon storage in Swedish agricultural soils due to unexpected socio-economic drivers
Series/Journal:Biogeosciences (1726-4189)
Year of publishing :2015
Volume:12
Number:11
Page range:3241-3251
Number of Pages:11
Publisher:Copernicus Publications
Associated Programs and Other Stakeholders:SLU - Environmental assessment > Programme Agricultural landscape
ISSN:1726-4189
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:P Natural resources > P30 Soil science and management
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Agrovoc terms:soil organic matter, carbon, land management, trends, sweden
Keywords:soil organic matter, carbon, land management, trends, sweden
URN:NBN:urn:nbn:se:slu:epsilon-e-2842
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-2842
Additional ID:
Type of IDID
Web of Science (WoS)000356179800006
ID Code:12503
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
S - Faculty of Forest Sciences
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment

(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:18 Aug 2015 12:49
Metadata Last Modified:01 Mar 2016 00:19

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