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sur le développement des zones arides et semi-arides

Accueil du site → Doctorat → Autriche → Assessment of land degradation in Gelda watershed, South Gondar, Ethiopia

Universität für Bodenkultur Wien (2010)

Assessment of land degradation in Gelda watershed, South Gondar, Ethiopia

Anteneh, Belayneh Ayele

Titre : Assessment of land degradation in Gelda watershed, South Gondar, Ethiopia

Auteur : Anteneh, Belayneh Ayele

Université de soutenance : Universität für Bodenkultur Wien

Grade : Dr. nat. techn. 2010

This PhD study investigates the biophysical interaction processes between society and nature in the Bashkurit watershed in Ethiopia. In describing the biophysical features of a rural local system, it adds to the array of existing local case studies in the South (cases from Nicaragua, Bolivia, Thailand, Laos and India) that all intend to provide a better understanding of the particular biophysical features, patterns and processes that occur at the community level of developing countries that are currently undergoing a transition from agrarian to more industrial modes of subsistence. These biophysical patterns and processes entail an analysis of the local material, energy, land and time resources and their interrelated dynamics. This has been done through applying the concept of socioeconomic metabolism (through material and energy flow accounting), an analysis of land use dynamics (through human appropriation of net primary production - HANPP) and time use (functional time use - FTU) from which sustainability indicators were derived that help measuring the environmental pressure of socioeconomic activities of the people of Bashkurit watershed. The empirical data were gathered in a one-year field study, applying various methods such as interviews, focus group discussions, participatory observation, as well as measuring and weighing a large quantity of stocks and flows. The results of this biophysical study show a local metabolic profile with many features resembling that of a traditional agrarian society. Bashkurit’s local economy still relies very much on the extraction of domestic resources, mainly in the form of biomass. The local economy is largely based on subsistence with still very traditional modes of production. The current use of energy shows low efficiency rates, including land use practices. People also bear a high agricultural labor burden, while material and energy returns are comparatively low. Given the current rates of population growth and enormous population density, coupled with the limited land area for agricultural production, local production will run into a deadlock if this path continues.

Mots clés : Degradierung des Bodens /(Landdegradierung) / Nährstoffverlust / Erosionsrillen / Agrarforstwirtschaft / die Einschätzung der Bauern — Land degradation / nutrient depletion / rill and interrill erosion / agroforestry / farmers perception

Présentation (österreichischen Bibliothekenverbundes)

Page publiée le 27 novembre 2015, mise à jour le 13 mars 2019