Zoneamento agroclimático para cultura do pinhão manso no estado de Minas Gerais em cenários de mudança climática

• Autor(a) principal: Toledo, Cristiane Campos
• Data de Publicação: 2009
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/5448
• topic: Disponibilidade hídrica; Pinhão manso; Mudanças climáticas; Water availability; Jatrophas curcas; Climate change; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO

The present study aimed to estimate the water availability of soils from Minas Gerais, in scenarios of global warming and develop a culture for agroclimatic zoning of Jatrophas curcas in the state of Minas Gerais, taking into account these possible changes. Information was used as soil texture, depth horizons, organic carbon, and other lifting discovery and recognition of the soils in Brazil, conducted by RADAMBRASIL and EMBRAPA, to determine the available water capacity of soils, given this need for calculation of water balance according to the method of Thornthwaite. The meteorological data were extracted from the model of atmospheric circulation HadRM3 with data range from 1960 to 1989 and from 2070 to 2100, for the pessimistic scenario A2 and B2 optimistic according to the Intergovernmental Panel on Climate Change (IPCC). The availability of soil water was determined according to the index "R" and then the information was interpolated using the spline interpolation in the software ArcGIS 3.2. Although the scenarios present a gradual upward trend as the precipitation, they envisage a reduction in water availability throughout the state index of water availability below 0.6, indicating a deficit of soil moisture, accounting for 0.7 % in the current period and the B2 scenario and A2 now represents about 20 and 16 % respectively. In addition to losses in the total area of classes that represent moisture favorable to the development of culture. The zoning for the cultivation of jatropha has indicated that even under the most extreme change the state of Minas Gerais may contribute to the production of biodiesel. Introducing small areas with thermal constraints of culture, about 7 % under the B2 and 12 % in A2 and the ability to 37 % of the water areas of the state were considered suitable for cultivation in B2, reaching 42 % in the A2 scenario.