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Accueil du site → Doctorat → Autriche → Land use/cover changes and the role of agroforestry practices in reducing deforestation and improving livelihoods of smallholders in Maytemeko Watershed, Northwest Ethiopia

Universität für Bodenkultur Wien (2015)

Land use/cover changes and the role of agroforestry practices in reducing deforestation and improving livelihoods of smallholders in Maytemeko Watershed, Northwest Ethiopia

Desta, Meseret Kassie

Titre : Land use/cover changes and the role of agroforestry practices in reducing deforestation and improving livelihoods of smallholders in Maytemeko Watershed, Northwest Ethiopia

Auteur : Desta, Meseret Kassie

Université de soutenance : Universität für Bodenkultur Wien

Grade : Dr. nat. techn. 2015

Résumé
Deforestation and unsustainable land use are causing extensive degradation of the natural resource base in the highlands of Ethiopia. The main objective of this study was to assess the extent of deforestation through land use/cover change over time and the potential of agroforestry practices in reducing burden on natural forest resources and improving the livelihoods of smallholder in the Maytemeko Watershed. Data was generated from satellite images of 1986 and 2011, field surveys and measurements, household questionnaire surveys, focus group discussions, interviews and workshop. The result showed that the area of cropland increased at the expense of the forestland, shrubland and grassland over the 25 years. Soil OC, N, available P and exchangeable K+ were significantly higher in agroforestry land use types (LUTs) compared with the single cereal croplands. Soils under the canopies of indigenous tree species showed significantly higher soil OC, N, ava P and K+ compared to exotic tree species in homegardens. The contribution of agroforestry to the overall fuelwood production is high, which helps to reduce wood extraction from natural forests and shrub land areas. Agroforestry LUTs also showed better economic returns than the mono-cropping ones. A survey showed that farmers were aware of the decline in forest cover and farmland productivity in the watershed through time. Moreover they had recognized the importance of planting trees to improve soil fertility, which was supported by lab analyses of the soil. However, farmland shortage, free grazing and land tenure insecurity were pointed out by farmers as major constraints of tree and shrub planting in agroforestry. Since agroforestry could be the best option for sustainable management of both, the forest and soil resources, in turn improving the livelihoods of smallholders, its implementation in wider areas should be encouraged

Mots clés : Bodenverbesserung / Ernährungssicherheit / Brennholzbedarf — Soil improvement / fuelwood / food security / indigenous trees

Présentation (österreichischen Bibliothekenverbundes)

Version intégrale

Page publiée le 29 novembre 2015, mise à jour le 13 mars 2019