Um novo modelo espacial para avaliação de adequação ecológica da agricultura irrigada no condado de Jahrom, Irã
DOI:
https://doi.org/10.1590/1983-21252023v36n119rcPalavras-chave:
Avaliação. Agricultura. Booleano. Geo-média. GIS.Resumo
A avaliação da adequação agrícola é um processo que requer dados espaciais, ferramentas de geo informação e a expertise de um cientista da computação para analisar as informações. O principal objetivo deste artigo é propor um novo modelo (baseado no modelo ecológico iraniano e no modelo da Organização das Nações Unidas para Agricultura e Alimentação (FAO)) para avaliação da adequação ecológica com métodos geométricos de avaliação média e calibração para uma melhor gestão do planejamento das terras irrigadas. Em seguida, para verificar e comparar o método proposto com outros métodos já conhecidos existentes, foram utilizados métodos como, lógica booleana e modelos MCE (WLC). Para o teste desses modelos, foi utilizado o índice de vegetação de diferença normalizada (NDVI). Os achados desta pesquisa mostraram que o modelo proposto por geo-média e calibração (kappa=0,79) é o melhor entre os métodos utilizados. Pelo contrário, o método médio aritmético mostrou a menor precisão (kappa=0). Assim, esses métodos (avaliação e calibração média geométrica) têm alta flexibilidade na localização de terras agrícolas. No geral, este estudo pode ser utilizado como um quadro básico para avaliar a adequação ecológica para outras regiões com condições semelhantes devido à sua simplicidade e alta precisão.
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