Nexus Approach: Resource Management for Soil Productivity

Schwärzel, Kai, Ardakanian, Reza, Avellán, Tamara and Zhang, Lulu, "Nexus Approach: Resource Management for Soil Productivity" in Encyclopedia of Soil Science, Third Edition ed. Lal, Rattan (Florida: CRC Press, 2016), 1530-1534.

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  • Author Schwärzel, Kai
    Ardakanian, Reza
    Avellán, Tamara
    Zhang, Lulu
    Book Editor Lal, Rattan
    Chapter Title Nexus Approach: Resource Management for Soil Productivity
    Book Title Encyclopedia of Soil Science, Third Edition
    Publication Date 2016-11-01
    Place of Publication Florida
    Publisher CRC Press
    Start page 1530
    End page 1534
    Language eng
    Abstract Despite of all efforts, soil and land degradation is increasing across sub-Saharan Africa (SSA). One reason for this is that many homes in SSA have no access to modern energy supply. Most of the energy used for cooking and heating comes from firewood, charcoal, crop residues, or even dung. Since biomass collection for energy use is not counterbalanced by soil nutrient increasing measures these habits results in significant vegetation and soil degradation, and decreasing water supply in wells and rivers. As a consequence, the provision of water, food, and energy is not ensured in many regions of SSA. The entry shows that food, energy and water security are interlinked as a Gordian knot. At the heart of these interlinkages is the Nexus of water, soil, and waste. Solutions to food and water issues in SSA must involve the establishment of land use systems which produce more food and bioenergy based on a sustainably enhanced productivity of soils and land. It is discussed that multifunctional land use systems based on agroforestry concepts meet these needs. As an innovative strategy to improve soils and land in SSA, the integration of non-food bioenergy systems across the landscape on degraded soils and on soils with medium to low productivity is suggested. It is demonstrated how the productivity of these sites could be increased by integrating waste from households and farms into the biomass production cycle. Finally, the potential impacts of implemented multifunctional land use systems on environmental, social, and socioeconomic aspects are illustrated.
    Copyright Holder CRC Press
    Copyright Year 2016
    Copyright type All rights reserved
    ISBN 9781498738903
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    Created: Thu, 15 Dec 2016, 23:04:52 JST by Claudia Matthias on behalf of UNU FLORES