Degraded Pastures
Mostrando 1-12 de 48 artigos, teses e dissertações.
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1. Mapping and characterization of intensity in land use by pasture using remote sensing
RESUMO A demanda atual por alimentos tem sido atendida por meio da exploração das reservas naturais. O Brasil apresenta 26% da sua extensão ocupada por usos agropecuários, sendo 62% desses, pastagens. Pastagens degradadas apresentam maior intensidade de uso da terra do que pastagens bem manejadas, levando à maior degradação do meio ambiente. Os sistem
Rev. bras. eng. agríc. ambient.. Publicado em: 06/05/2019
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2. Soil carbon stock and humification in pastures under different levels of intensification in Brazil
ABSTRACT: Intensive management of tropical pastures has shown potential for greenhouse gas (GHG) mitigation due to high forage production and C accumulation in the soil. This study aimed to evaluate different pasture management options in relation to their effect on soil C stocks and soil organic matter (SOM) humification. Pastures in four beef cattle produc
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-02
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3. Effect of Brachiaria Grass on Vegetative Development of Teak
ABSTRACT Invasive plants are a limiting factor for the establishment of planted teak (Tectona grandis L.f.) forests, especially because most of them are planted on Urochloa decumbens Stapf degraded pastures. This study evaluated initial teak development applying different control alternatives for U. decumbens . Treatments were no weed control (T1), continuo
Floresta Ambient.. Publicado em: 30/07/2018
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4. Quantity and quality of soil organic matter as a sustainability index under different land uses in Eastern Amazon
ABSTRACT: Soil organic matter (SOM), which influences chemical, physical and biological soil attributes, is the main form of C found in the soil which can also be used as a soil sustainability index. The aim of this study was to use the quantity and quality of SOM as an indicator to determine the sustainability of different land uses (native vegetation, seco
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-05
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5. Where is sugarcane cropping expanding in the brazilian cerrado, and why? A case study
ABSTRACT Sugarcane growing area in Brazil sharply expanded between 2000 and 2010 due to the increasing world demand for sugar and ethanol. Since this expansion of sugarcane is said to occur in areas covered by degraded pastures, it is likely not threatening the environment or food production. In order to verify this assumption, we investigate at farm and fie
An. Acad. Bras. Ciênc.. Publicado em: 14/08/2017
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6. Recovery of a dystrophic Red Latosol (Oxisol) and pasture as a function of gypsum in the Cerrado biome
ABSTRACT This study was conducted to evaluate the chemical effects of gypsum on the soil and on the recovery of a pasture established with palisade grass (Urochloa brizantha) in a Cerrado biome region. A randomized block experimental design with six treatments and four replications was adopted. Treatments consisted of five levels of gypsum (0, 450, 900, 1800
R. Bras. Zootec.. Publicado em: 2017-04
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7. Comparing how land use change impacts soil microbial catabolic respiration in Southwestern Amazon
Abstract Land use changes strongly impact soil functions, particularly microbial biomass diversity and activity. We hypothesized that the catabolic respiration response of the microbial biomass would differ depending on land use and that these differences would be consistent at the landscape scale. In the present study, we analyzed the catabolic response pro
Braz. J. Microbiol.. Publicado em: 2016-03
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8. Monitoramento das pastagens cultivadas no cerrado goiano a partir de imagens MODIS índices de vegetação (MOD13Q1) / Monitoring cultivated pastures in the Cerrado Goiano Image from MODIS vegetation index (MOD13Q1)
Cattle ranching is extremely important for the economy of Brazil. This activity is characterized by the intensive explotation of pastures, which occupy a vast area of the Brazilian territory, i.e. approximately 150 million hectares. Currently, Brazil is the largest meat exporter in the world. Concerning its biomes, this occupation occurs mainly in the Cerrad
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/03/2012
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9. Assessing soil carbon stocks under pastures through orbital remote sensing
The growing demand of world food and energy supply increases the threat of global warming due to higher greenhouse gas emissions by agricultural activity. Therefore, it is widely admitted that agriculture must establish a new paradigm in terms of environmental sustainability that incorporate techniques for mitigation of greenhouse gas emissions. This article
Scientia Agricola. Publicado em: 2011-10
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10. Genetic diversity analysis among pigeonpea genotypes adapted to South American regions based on microsatellite markers
The pigeonpea [Cajanus cajan (L) Millspaugh] is one of the most important perennial legume crops utilized in the food, fodder, soil conservation, crop-livestock integrated systems, reclaiming of degraded pastures and symbiotic nitrogen fixation. Microsatellite markers were used to estimate the genetic diversity of 77 pigeonpea genotypes selected from the ger
Scientia Agricola. Publicado em: 2011-08
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11. Avaliação do uso e situação das pastagens no Bioma Pantanal por meio de gráficos Triplot.
A presença dominante de campo nativo favoreceu migrações inter-regionais para a criação de fazendas no Pantanal. As pastagens nativas no bioma Pantanal são os principais recursos naturais que a região possui para a manutenção e desenvolvimento da pecuária de corte extensiva. Foram construídas as planilhas de dados com as áreas totais por municíp
SIMPÓSIO SOBRE RECURSOS NATURAIS E SOCIOECONÔMICOS DO PANTANAL. Publicado em: 2011
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12. Avaliação do uso e situação das pastagens no Bioma Pantanal por meio de gráficos Triplot.
A presença dominante de campo nativo favoreceu migrações inter-regionais para a criação de fazendas no Pantanal. As pastagens nativas no bioma Pantanal são os principais recursos naturais que a região possui para a manutenção e desenvolvimento da pecuária de corte extensiva. Foram construídas as planilhas de dados com as áreas totais por municíp
SIMPÓSIO SOBRE RECURSOS NATURAIS E SOCIOECONÔMICOS DO PANTANAL. Publicado em: 2011