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

Accueil du site → Master → Brésil → 2020 → Índices de manejo do solo para análise da fragilização ambiental em áreas agrossilvipastoris utilizando análise dimensional

Universidade Estadual Paulista (UNESP) 2020

Índices de manejo do solo para análise da fragilização ambiental em áreas agrossilvipastoris utilizando análise dimensional

Manoel, Márcia Pereira da Silva

Titre : Índices de manejo do solo para análise da fragilização ambiental em áreas agrossilvipastoris utilizando análise dimensional

Soil management indices for analysis of environmental fragilization in agrossilvipastoral areas using dimensional analysis

Auteur : Manoel, Márcia Pereira da Silva

Université de soutenance : Universidade Estadual Paulista (UNESP)

Grade : Mestre em Ciências Ambientais 2020

Résumé
Economic relations aimed at consumption and exchanges, as currently occurring, result in diverse human actions to the environment, which can trigger positive impacts on economic growth, in contrast, the consequence is the continuous exploitation of natural resources, weakening productive and natural areas, mainly in geographically vulnerable regions. When considering the anthropic exploration of the environment, normally related to land use, soil ends up being the most affected natural resource in this process. Thus, it is possible to consider that the degradation arising from the management actively interferes, most of the time in a negative way, in the intrinsic and extrinsic characteristics of the soil. Thus, using indicators related to soil management can be an alternative in characterizing the fragility of agroforestry areas within hydrographic basins. However, the determination of indicators and indices capable of identifying the degree of fragility due to the management of different occupations and land uses still needs to be studied. Given the importance of these issues, the possibility of associating indicator variables related to soil management (geometric mean diameter of soil aggregates, mechanical resistance to penetration, permeability coefficient, natural cover, soil organic matter, effective soil depth) , area of exposed soil and anthropic pressure in soil management), for the construction of indices of environmental fragility in areas of agrosilvipastoral management. The results showed that it was possible to propose dimensionless indices using the variables previously described. Thus, through the method of dimensional analysis it was possible to establish six indexes, two with applicability in relational analysis of areas and the other four with applicability in soil management analysis

Présentation

Version intégrale

Page publiée le 11 décembre 2020