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Soil Conservation on Sloping Land: Technical Options and Adoption Constraints

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Date
2013
Link to item file
http://dx.doi.org/10.1007/978-3-642-33377-4_7
Dewey
Croissance et développement économiques
Sujet
Maize; Labor resources; land resources; Vietnam; Thailand; soil conservation technologies; soil erosion
JEL code
O.O1.O13; Q.Q5.Q57; Q.Q1.Q15; O.O5.O53
Book title
Sustainable Land Use and Rural Development in Southeast Asia: Innovations and Policies for Mountainous Areas Springer Environmental Science and Engineering
Author
Fröhlich, Holger L.; Schreinemachers, Pepijn; Stahr, Karl; Clemens, Gerhard
Publisher
Springer-Verlag
Publisher city
Berlin
Year
2013
Pages number
500
ISBN
978-3-642-33376-7
URI
https://basepub.dauphine.fr/handle/123456789/11433
Collections
  • LEDa : Publications
Metadata
Show full item record
Author
Hilger, Thomas
Keil, Alwin
Lippe, Melvin
Panomtaranichagul, Mattiga
Saint-Macary, Camille
163511 Laboratoire d'Economie de Dauphine [LEDa]
Zeller, Manfred
Pansak, Wanwisa
Tuan Vu, Dinh
Cadisch, Georg
Type
Chapitre d'ouvrage
Item number of pages
229-279
Abstract (EN)
This chapter briefly summarizes the causes and consequences of soil erosion, before presenting examples of effective soil conservation technologies (SCT), such as contour-based cropping, cover crops, mulching and geo-textiles, and based on case studies from northern Thailand and northern Vietnam. Depending on site conditions, a soil erosion reduction of 30–60 % in the first year after establishment and up to 72–98 % by the third year was observed in these studies when compared to local farmers’ practices. In north-east Thailand, maize grain yields increased from 1.5 and 3.2 Mg ha−1, to 3.8 and 5.5 Mg ha−1 under minimum tillage und relay cropping. The study in north-western Vietnam revealed that although the majority of farmers were aware of soil erosion mitigation methods, adoption rates of the promoted soil conservation technologies remained low. These technologies compete for land and labor resources with the main cropping activities, in particular highly profitable commercial maize cultivation, incurring high opportunity costs. Based on these case studies, we conclude that innovative approaches to soil conservation require a change in land use systems, not just the adoption of conventional SCT in the existing systems. The integration of plant and animal production in the uplands should be promoted that allows farmers to benefit from urban-based economic growth on the one hand, such as through the exploitation of niche markets for high-value meat, while being environmentally sustainable on the other. The improved integration of animal husbandry with plant production systems could make feed producing soil conservation options more attractive to farmers, which could be further stimulated by introducing payment for environmental services (PES) schemes.

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