A erosão de solos na cidade do Chibuto e arredores.

Abstract

This work addresses the issue of soil erosion in the city of Chibuto and surroundings, in the southern region of the district of Chibuto, Gaza Province. The purpose of this work is to evaluate, in an interrelated way, the factors that affect soil erosion in this geographic space, given that erosion results from the interaction of natural and human factors. In order to reach the outlined objectives, literature review, analysis and interpretation of maps and maps of the study area were used, followed by a visual assessment in the field (field work) aided by a small questionnaire addressed to a certain group of key informants. Data were processed and interpreted in the ILWIS 2.2 software. The research found that the process of soil degradation is not as recent as it has been reported, it has been going on for years, this fact read by the abandonment of certain areas that were once productive but that today have become marginal fields. However, what is a great dilemma today is the opening of immeasurable ravines dating back to 1992. The most important erosion in the study area is the rainy type, although in the dry season there is wind erosion. The causes are irregular rainfall, poor vegetation cover, construction and cultivation on slopes, poor soil structure and cattle grazing on steep slopes. The interaction of these factors resulted in soil compaction and the opening of furrows and ravines that occur in the study area.( Tradução nossa )