Nutrient Stock
Mostrando 1-12 de 26 artigos, teses e dissertações.
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1. Nutrient stock and nutritional efficiency of woody species in dry tropical forest as reforestation indicators
ABSTRACT Efficient forest species can be indicated for reforesting environments, which present nutritional restriction. The objective of this study was to determine the nutrient stock in leaf biomass of the species of greatest importance value (IV) in a tropical dry forest fragment, as well as to evaluate the nutritional efficiency of these species as refore
Rev. Ceres. Publicado em: 11/11/2019
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2. Alocação de nutrientes ao longo do tronco em Pinus taeda L. aos 17 anos de idade
Resumo Este trabalho, realizado em um povoamento de Pinus taeda de 17 anos de idade no município de Cambará do Sul - RS, em Cambissolo Húmico alumínico típico, teve por objetivo estudar o padrão de alocação dos nutrientes ao longo do tronco e suas implicações para a amostragem na estimativa do estoque de nutrientes. Foram amostradas 18 árvores, di
Ciênc. Florest.. Publicado em: 30/05/2019
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3. Manejo da biomassa e sustentabilidade nutricional em povoamentos de Eucalyptus spp. em pequenas propriedades rurais
Resumo O estudo foi realizado com o objetivo de subsidiar práticas de manejo nutricional de povoamentos de Eucalyptus spp. em pequenas propriedades rurais no estado do Rio Grande do Sul. Foram avaliados povoamentos de 2, 4, 6 e 8 anos de idade, com amostragem de 24 árvores e determinação da biomassa e nutrientes nos componentes: folha, galho vivo, galho
Ciênc. Florest.. Publicado em: 30/05/2019
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4. Nutrient Cycling in Corymbia citriodora in the State of Rio de Janeiro, Brazil
ABSTRACT The quantification and transfer of nutrient stock among compartments in the forest environment is the key to understanding the nutrient cycling process. The aim of this study was to quantify the nutrient stock and dynamics by litter deposition in a Corymbia citriodora settlement in the Mountainous region of the State of Rio de Janeiro. Different pl
Floresta Ambient.. Publicado em: 04/04/2019
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5. Carbon and nutrient stocks of three Fabaceae trees used for forest restoration and subjected to fertilization in Amazonia
ABSTRACT Amazonia is crucial to global carbon cycle. Deforestation continues to be one of the main causes of the release of C into the atmosphere, but forest restoration plantations can reverse this scenario. However, there is still diffuse information about the C and nutrient stocks in the vegetation biomass. We investigated the carbon and nutrient stocks o
An. Acad. Bras. Ciênc.. Publicado em: 31/08/2017
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6. Fallow Reduces Soil Losses and Increases Carbon Stock in Caatinga
ABSTRACT This study aimed at evaluating whether 10 years of fallow was sufficient to restore a degraded hillslope in the semi-arid Caatinga biome, Brazil. For this purpose, runoff, erosion, loss of nutrients and organic carbon were measured on two comparable hillslopes: one was left fallow and the other degraded caused by overgrazing. Fallow management reduc
Floresta Ambient.. Publicado em: 27/04/2017
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7. Agroforestry systems, nutrients in litter and microbial activity in soils cultivated with coffee at high altitude
Agroforestry systems are an alternative option for sustainable production management. These systems contain trees that absorb nutrients from deeper layers of the soil and leaf litter that help improve the soil quality of the rough terrain in high altitude areas, which are areas extremely susceptible to environmental degradation. The aim of this study was to
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-04
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8. Impact of sugarcane trash on fertilizer requirements for São Paulo, Brazil
The area under mechanized sugarcane (Saccharum spp.) harvesting is expanding in Brazil, increasing the return of trash to the soil. The main questions regarding this management are: (i) after adopting unburned mechanical harvesting, how long will it take to observe decreases in fertilizer requirements, (ii) what will be the magnitude of this decrease and, (i
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-10
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9. Matéria orgânica e atributos químicos em solo de tabuleiros costeiros sob diferentes coberturas vegetais / Organic matter and chemical attributes of an Coastal Tableland soil under different vegetation covers
The conversion of native vegetation in agricultural and forest crops results in changes in soil properties. The aimed was to assess the dynamic attributes of a Yellow Oxisol under differents vegetation covers in the Coastal Tableland. Soil samples were collected at depths of 0-10, 10-20 and 20-40 cm in June 2011 in Sooretama, ES, considering four soil vegeta
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/12/2011
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10. Conversion of Cerrado into agricultural land in the south-western amazon: carbon stocks and soil fertility.
Mudanças de uso da terra e práticas de manejo modificam a dinâmica do C e a fertilidade do solo. Este estudo avaliou as implicações dos sistemas de cultivo (NT e CT) nos estoques de C e de nutrientes e identificou inter-relações entre estes estoques e outros atributos da fertilidade do solo em Latossolo após a mudança do uso da terra no cerrado amaz
Scientia Agricola. Publicado em: 2011
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11. Estoques de biomassa e de nutrientes de pousios enriquecidos com Inga edulis Martius em áreas com histórico de agricultura e de pecuária no Assentamento Tarumã-Mirím, Manaus- AM / Stocks of biomass and nutrients in forest fallow enriched with Inga edulis Martius in sites with a history of agriculture and pasture in the rural settlement Tarumã-Mirím, Manaus - AM
Deforestation rates of primary forests in the humid tropics have been growing intensively in recent years, due mainly to the development of shifting cultivation and extensive pasture. After forest fragmentation and conversion to agricultural use, the cleared areas of rainforest are usually abandoned so there is natural regeneration of vegetation and slow res
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/12/2009
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12. Estoque e qualidade da matéria orgânica do solo em áreas cultivadas com café sob sistemas agroflorestal e a pleno sol / Soil organic matter stock and quality in agroforestry and full sun coffee systems
Soil organic matter (SOM) restoring is considered a main goal in the enhancement of soil quality. The evaluation of changes in the SOM as a result of soil management practices is fundamental to identify strategies to increase agricultural production, avoiding soil degradation and decreasing the emission of greenhouse gases. In Brazil, no-tillage has been bro
Publicado em: 2009