文章基本信息

标题：Alteraes na eficiência do uso da água relacionadas com fatores climáticos e uso e ocupao do solo, na regio do MATOPIBA
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作者：Dimas de Barros Santiago ; Humberto Alves Barbosa ; Washington Luiz Félix Correia Filho 等
期刊名称：Research, Society and Development
电子版ISSN：2525-3409
出版年度：2021
卷号：10
期号：9
页码：1-12
DOI：10.33448/rsd-v10i9.17891
语种：English
出版社：Grupo de Pesquisa Metodologias em Ensino e Aprendizagem em Ciências
摘要：The study aims to: estimate and analyze the spatial-temporal changes of the WUE in MATOPIBA and evaluate the influence of climatic factors and land use and occupation on the variation of the WUE. The study will use the products MOD17A2 (GPP), and MOD16A2 (ET) derived from the MODIS sensor (Moderate Resolution Imaging Spectroradiometer) obtained in the United States Geological Survey (USGS), with spatial resolution 1 km x 1km, for the computation of the annual WUE in the period between 2001 and 2019. Regarding the evaluation of land use based on the MAPBIOMAS maps, with a resolution of 30m x 30m. Precipitation data will come from the Climate Hazard Group InfraRed Precipitation with Station data (CHIRPS) with a spatial resolution of 5.6 km by 5.6 km. The mathematical calculations were developed in R environment software version 3.6-3 and Quantum GIS version 3.4-6. The results show that the highest (lowest) values of WUE occur in agricultural regions and areas of native Amazonian vegetation (non-vegetated surface areas). This WUE pattern is associated with the growing agricultural expansion over the regions (West Bahia and in the Piauí portion), mainly motivated by soy planting. In addition, during dry (wet) years have positive (negative) anomalies of WUE. Concluding that, agricultural areas are prone to higher WUE values due to cultural management helping develop crops. Vegetation responses to dry and rainy events were more sensitive in agricultural areas than in areas of native vegetation.
关键词：Water Use Efficiency;MATOPIBA;Land use and occupation.