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

Titre : Avanços da degradação ambiental na região Nordeste do Brasil

Auteur : Gurjão, Natália de Oliveira

Université de soutenance : Universidade Federal do Ceará

Grade : Mestrado em Economia Rural 2020

Résumé partiel
The Brazilian Northeast is the poorest region in the country, and its population, which depends heavily on agricultural production, suffers from the adversities associated with aggressive and unstable climatic conditions, land structure , technological backwardness, and the degradation of its natural resources - caused , largely, due to the anthropic action of predatory agricultural practices and inadequate cleaning procedures for cultivation areas - lack or deficient technical assistance, overgrazing, among other causes. The present work aims to map the degree of environmental degradation of the municipalities that make up the nine states of Northeast Brazil, through the creation of the Environmental Degradation Index (IDA). For the formation of IDA, indicators that cover ecological, economic and social variables are used. The indicators were transformed into partial indices in order to standardize the values, making them dimensionless. The weights assigned to each partial index used in the construction of the IDA were obtained using Linear Programming techniques. The data used in the research are collected from the last three Agricultural Censuses : 1995/1996, 2006 and 2017 and the GDP per capita of the years 1999, 2006 and 2017, extracted from the Brazilian Institute of Geography and Statistics (IBGE). The generated IDA is measured as a percentage and is contained in the range between zero and one hundred. The closer to 100% the estimated value for IDA, the more degraded the municipality is. In contrast, the lower the percentage of IDA, the less degraded the municipality is in relation to the weighting of the four partial indixes

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