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Katholieke Universiteit Leuven (2018)

CREATING NEW PRODUCTIVE LANDSCAPES THROUGH EROSION PROCESS

Muiruri, David Njenga

Titre : CREATING NEW PRODUCTIVE LANDSCAPES THROUGH EROSION PROCESS

Auteur : Muiruri, David Njenga

Université de soutenance : Katholieke Universiteit Leuven

Grade : Master of Human Settlements 2018

Résumé
This paper focuses on soil erosion by delayering the landscape processes of erosion ; as a natural process and also as a social-cultural issue affecting most of Sub-Saharan Africa. The African continent is said to have the most pronounced rates of soil erosion in the world that has led to reduced yield production to an approximate rate of 2-40% annually (Drechsel, Gyiele, Kunze & Cofie, 2001). The discussion in this paper revolves around understanding causes of soil erosion, how to identify erosion and its various forms of classification and mitigation measures that can be used to reclaim these landscapes. The paper transcends beyond the negativities of erosion in the landscape but as an opportunity of creating new productive landscapes by utilizing its intricate sedimentation process and water retention capacities. It is an invitation to exploring the capacity of the erosion process and working with it through measures guided by two main principles ; reducing water surface run-off by increasing infiltration rate of the soils and reducing the gradient or the slope length in order to decelerate the transportation and movement of water and sediments. This discussion is based on a semi-arid context of Luenha-Changara, a rural settlement in Tete, Mozambique, of a catchment population of approximately 18000 inhabitants that survive mainly on subsistence agriculture and rearing livestock (2014 Census). Changara is adversely affected by soil erosion and the settlement landscape is choreographed by bold gully erosions on the edge of the riverscape and the plateau, where the oldest settlement is based. The gully fingers continue protruding and invading the plateau

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Page publiée le 17 décembre 2018