Unmasking secondary vegetation dynamics in the Brazilian Amazon
نویسندگان
چکیده
منابع مشابه
Land Use Dynamics in the Brazilian Amazon
The articles presented in this special issue of Ecological Economics address the important theme of land use dynamics as it pertains to the Brazilian Amazon. Much environmental change is an ecological artifact of human agency, and such agency is often manifested in land use impacts, particularly in tropical areas. The critical problem of tropical deforestation is but one example of a land use d...
متن کاملAssessing the extent of agriculture/pasture and secondary succession forest in the Brazilian Legal Amazon using SPOT VEGETATION data
a Department of Forestry, Instituto Superior de Agronomia, Tapada da Ajuda, 1349-017 Lisboa, Portugal. b Department of Mathematics, Instituto Superior de Agronomia, Tapada da Ajuda, 1349-017 Lisboa, Portugal, and Center for Logic and Computation, Instituto Superior Técnico, Lisboa, Portugal. c Remote Sensing Department, Instituto Nacional de Pesquisas Espaciais, Av. dos Astronautas, 1758, CEP 1...
متن کاملCropland expansion changes deforestation dynamics in the southern Brazilian Amazon.
Intensive mechanized agriculture in the Brazilian Amazon grew by >3.6 million hectares (ha) during 2001-2004. Whether this cropland expansion resulted from intensified use of land previously cleared for cattle ranching or new deforestation has not been quantified and has major implications for future deforestation dynamics, carbon fluxes, forest fragmentation, and other ecosystem services. We c...
متن کاملVegetation dynamics and rainfall sensitivity of the Amazon.
We show that the vegetation canopy of the Amazon rainforest is highly sensitive to changes in precipitation patterns and that reduction in rainfall since 2000 has diminished vegetation greenness across large parts of Amazonia. Large-scale directional declines in vegetation greenness may indicate decreases in carbon uptake and substantial changes in the energy balance of the Amazon. We use impro...
متن کاملIntegration of Landsat TM and SPOT HRG Images for Vegetation Change Detection in the Brazilian Amazon.
Traditional change detection approaches have been proven to be difficult in detecting vegetation changes in the moist tropical regions with multitemporal images. This paper explores the integration of Landsat Thematic Mapper (TM) and SPOT High Resolution Geometric (HRG) instrument data for vegetation change detection in the Brazilian Amazon. A principal component analysis was used to integrate ...
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ژورنال
عنوان ژورنال: Environmental Research Letters
سال: 2020
ISSN: 1748-9326
DOI: 10.1088/1748-9326/ab76db