期刊论文详细信息
Environmental Evidence
What are the effects of agricultural management on soil organic carbon (SOC) stocks?
Helene Bracht Jørgensen2  Ingrid K Thomsen1  Emanuele Lugato4  Thomas Kätterer5  Louise E Jackson6  Katarina Hedlund2  Bo Söderström3 
[1] Department of Agroecology, Aarhus University, P.O. Box 50, DK-8830 Tjele, Denmark;Department of Biology, Lund University, SE-223 62 Lund, Sweden;Mistra Council for Evidence-Based Environmental Management, Royal Swedish Academy of Sciences, P.O. Box 50005, SE-104 05 Stockholm, Sweden;Joint Research Centre, Land Resource Management – Soil action, Institute for Environment & Sustainability (IES), European Commission, Ispra, VA, Italy;Department Ecology, SLU, P.O.Box 7044, 750 07 Uppsala, Sweden;Department of Land, Air and Water Resources, University of California Davis, One Shields Avenue, Davis, CA 95616, USA
关键词: Sequestration;    Cover crop;    Crop rotation;    Fertilization;    Tillage;    Long-term;    Agricultural practices;    Soil organic carbon;   
Others  :  801096
DOI  :  10.1186/2047-2382-3-2
 received in 2013-11-04, accepted in 2013-12-27,  发布年份 2014
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【 摘 要 】

Background

Changes in soil organic carbon (SOC) stocks significantly influence the atmospheric C concentration. Agricultural management practices that increase SOC stocks thus may have profound effects on climate mitigation. Additional benefits include higher soil fertility since increased SOC stocks improve the physical and biological properties of the soil. Intensification of agriculture and land-use change from grasslands to croplands are generally known to deplete SOC stocks. The depletion is exacerbated through agricultural practices with low return of organic material and various mechanisms, such as oxidation/mineralization, leaching and erosion. However, a systematic review comparing the efficacy of different agricultural management practices to increase SOC stocks has not yet been produced. Since there are diverging views on this matter, a systematic review would be timely for framing policies not only nationally in Sweden, but also internationally, for promoting long-term sustainable management of soils and mitigating climate change.

Methods

The systematic review will examine how changes in SOC are affected by a range of soil-management practices relating to tillage management, addition of crop residues, manure or other organic “wastes”, and different crop rotation schemes. Within the warm temperate and the snow climate zones, agricultural management systems in which wheat, barley, rye, oats, silage maize or oilseed rape can grow in the crop rotation will be selected. The review will exclusively focus on studies conducted over at least 10 years. Searches will be made in 15 publication databases as well as in specialist databases. Articles found will be screened using inclusion/exclusion criteria at title, abstract and full-text levels, and screening consistency will be evaluated using Kappa tests. Data from articles that remain after critical appraisal will be extracted using a predefined spreadsheet. Subgroup analyses will be undertaken to elucidate statistical relationships that are specific to particular type of management interventions. Meta-regression within subgroups will be performed as well as sensitivity analysis to investigate the impact of removing groups of studies with low or unclear quality.

【 授权许可】

   
2014 Söderström et al.; licensee BioMed Central Ltd.

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