Assessing the impact of soil degradation on food production

• Published in: Current opinion in environmental sustainability Vol. 4; no. 5; pp. 478 - 488
• Main Authors: Bindraban, Prem S, van der Velde, Marijn, Ye, Liming, van den Berg, Maurits, Materechera, Simeon, Kiba, Delwendé Innocent, Tamene, Lulseged, Ragnarsdóttir, Kristín Vala, Jongschaap, Raymond, Hoogmoed, Marianne, Hoogmoed, Willem, van Beek, Christy, van Lynden, Godert
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.11.2012
• Subjects: africa; carbon sequestration; climate; conservation agriculture; erosion; land degradation; management; security; trends; yield
• ISSN: 1877-3435; 1877-3443
• DOI: 10.1016/j.cosust.2012.09.015

► Current degradation assessments and impact give divergent and unverified outcomes. ► Relation between global assessments and local interventions are non-existent. ► Process-based approaches can link degradation and impact at different levels. ► Location specific interventions are essential to mitigate and rehabilitate degradation. Continuing soil degradation remains a serious threat to future food security. Yet, global soil degradation assessments are based on qualitative expert judgments or remotely sensed quantitative proxy values that suffice to raise awareness but are too coarse to identify appropriate sustainable land management interventions. Studies in China and Sub Saharan Africa illustrate the considerable impact of degradation on crop production but also point to the need for solutions dependent on location specific agro-ecological conditions and farming systems.The development of a comprehensive approach should be feasible to better assess both extent and impact of soil degradation interlinking various scales, based on production ecological approaches and remote sensing to allow disentangling natural and human induced causes of degradation. A shared common knowledge base cataloguing hard-won location-specific interventions is needed for successfully preventing or mitigating degradation.