Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Doctorat → Japon → Land Degradation Assessment and Soil Conservation Strategy for Mixteca Region, Mexico

MAY CUEVAS Sergio Azael

Land Degradation Assessment and Soil Conservation Strategy for Mixteca Region, Mexico

MAY CUEVAS Sergio Azael

Titre : Land Degradation Assessment and Soil Conservation Strategy for Mixteca Region, Mexico

Auteur : MAY CUEVAS Sergio Azael

Université de soutenance : Tokyo University of Agriculture

Grade : Doctoral Dissertation 2016

Descriptif partiel
Land resources are indispensable for agriculture. High intensity rainfall events or drought happen more frequently due to progressing global warming. In addition, farming systems depending on agricultural chemicals threaten land resources, especially soil environment. Although there are many reports and studies dealing with land degradation, soil environment is still affected. El Jicaral Village in Mexico is also one of the areas where land degradation has been progressing. Soil degradation processes are divided into three : physical, chemical and biological ones. Dominate factors that influence soil degradation processes are soil properties, climate, topography and vegetation. Soil properties are the parent materials and all those inherent properties of the soil, such as physical, chemical and biological properties. Concerning the climate, components that influence soil degradation are precipitation, temperature, evapotranspiration and seasons. Topographic components include slope, water systems and landscape position. Vegetation components are related with biomass, biodiversity and succession. There are several causes that produce soil degradation. Bio-physical causes are those related with land use, deforestation, farming systems, and crop and soil management. Also, socio-economic causes, such as ownership of the land, institutional strength, markets, poverty and health, influence soil degradation. In addition, there are political causes, which are political stability and policies. Soil degradation is part of a descending spiral, where degraded soils are only capable to carry out subsistence agriculture, leading to poverty, including poor health and malnutrition, conducting to political instability, putting more pressure on natural resources. Accordingly, this study dealt with the assessment methods for evaluating land degradation and the development of a soil conservation strategy that are applicable even in remote areas in developing countries.

Présentation

Version intégrale (5,8 Mb)

Page publiée le 22 novembre 2021