Pedology and plant physiognomies in the cerrado, Brazil
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چکیده
منابع مشابه
Pedology and plant physiognomies in the Cerrado, Brazil.
This study was carried out in Paraopeba National Reserve. It aims to classify and evaluate the soil of the studied area and to verify the influence of soil attributes on vegetation by testing the following hypotheses: 1) under woodland physiognomies (Cerradão) the soil fertility is higher and the Al content lower; 2) open savanna occurs only in areas with high Al contents. For this purpose, rep...
متن کاملVegetation structure in cerrado physiognomies in south-eastern Brazil.
We studied three cerrado physiognomies (campo cerrado, a savanna woodland; cerrado sensu stricto, a woodland; and cerradão, a tall woodland) in a reserve with 1,225 ha, in Santa Rita do Passa-Quatro (21 degrees 36-38'S and 47 degrees 36-39'W), São Paulo State, South-eastern Brazil, to compare plant communities structure. As descriptors of the vegetation structure, we used richness, density, bas...
متن کاملThe Cerrado (Brazil) plant cytogenetics database
Cerrado is a biodiversity hotspot that has lost ca. 50% of its original vegetation cover and hosts ca. 11,000 species belonging to 1,423 genera of phanerogams. For a fraction of those species some cytogenetic characteristics like chromosome numbers and C-value were available in databases, while other valuable information such as karyotype formula and banding patterns are missing. In order to in...
متن کاملDiscrimination and Biophysical Characterization of Cerrado Physiognomies with Eo-1 Hyperspectral Hyperion
The Brazilian savanna, locally known as "cerrado", is the most intensely stressed biome with both naturaland human-induced pressures. In this study, we aimed to improve discrimination and characterization of the Brazilian cerrado physiognomies using hyperspectral Hyperion imagery, the first space-borne imaging spectrometer onboard the NASA's Earth Observing-1 (EO-1) platform. A Hyperion image w...
متن کاملDiscrimination and Biophysical Characterization of Brazilian Cerrado Physiognomies with Eo-1 Hyperspectral Hyperion
The savanna, typically found in the sub-tropics and seasonal tropics, are the dominant vegetation biome type in the southern hemisphere, covering approximately 45% of the South America. In Brazil, the savanna, locally known as “cerrado,” is the most intensely stressed biome with both natural environmental pressures (e.g., the strong seasonality in weather, extreme soil nutrient impoverishment, ...
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ژورنال
عنوان ژورنال: Anais da Academia Brasileira de Ciências
سال: 2013
ISSN: 0001-3765
DOI: 10.1590/s0001-37652013000100007