Soil And Climatic Variables
Mostrando 13-24 de 30 artigos, teses e dissertações.
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13. Gradientes edáficos e sua relação com as fitofisionomias do semi-árido meridional brasileiro / Edaphic gradients and their relationship with the vegetation types of semi-arid southern Brazil
The semi-arid region in Brazil represents a significant territorial extension, where the climate is markedly seasonal, with low rainfall, high evapotranspiration and higher temperatures. Its southern portion comprises the northern boundary between the states of Minas Gerais and Bahia. This region is dominated by dry forest vegetation type, however, different
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2012
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14. Seasonal rhythms of tropical tree species in contrasting soil conditions in southern Brazil.
The great variety of phenological patterns in tropical forests must not be explained only by climatic factors. Considering that soil water availability influences plant water status and total metabolism, soil conditions are also expected to be important for the regulation of plant reproductive and vegetative activities over time. Phenological (flushing, leaf
INTERNATIONAL SYMPOSIUM [OF THE] INTERNATIONAL ASSOCIATION FOR VEGETATION SCIENCE. Publicado em: 2011
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15. Sugarcane crop efficiency in two growing seasons in São Paulo State, Brazil.
A conceptual framework for crop production efficiency was derived using thermodynamic efficiency concept, in order to generate a tool for performance evaluation of agricultural systems and to quantify the interference of determining factors on this performance. In Thermodynamics, efficiency is the ratio between the output and input of energy. To establish th
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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16. Caracterização da produtividade florestal e dos padrões de crescimento de Pinus taeda L. no sul do Brasil através de análise de tronco / Characterization of forest productivity and growth patterns of Pinus taeda L. in south of Brazil using bole analysis
Visando caracterizar a dinâmica de crescimento do Pinus taeda no sul do Brasil, este estudo teve os seguintes objetivos: i) determinar os principais fatores edafo-climáticos e do povoamento associados à ampla variação de produtividade da espécie; e ii) caracterizar padrões de crescimento e uniformidade, do plantio até 9 anos em diferentes regiões ed
Publicado em: 2011
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17. Rating parasitological contamination and seasonal sand in public parks region of the eastern city of Sao Paulo / Avaliação parasitológica e contaminação sazonal nas areias de parques públicos na região da zona leste da cidade de São Paulo
Introduction - In recent decades, have been recurrent in the national and international scientific literature, the finding of contamination of public places open to the community by parasites with zoonotic potential and spreaders of human infections. The geohelminths are parasites that can infect humans, however, to allow for the embryo and thus become infec
Publicado em: 2010
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18. RELAÇÃO ENTRE A EROSÃO MARGINAL, ATRIBUTOS FÍSICOS DO SOLO E VARIÁVEIS HIDROLÓGICAS E CLIMÁTICAS NO BAIXO SÃO FRANCISCO SERGIPANO / RELATIONSHIP BETWEEN RIVERBANK EROSION, SOIL PHYSICAL CHARACTERISTICS AND HYDROLOGICAL AND CLIMATIC VARIABLES IN LOWER SÃO FRANCISCO RIVER.
Em conseqüência da implantação de grandes projetos hidrelétricos no canal do rio São Francisco, a alteração do regime hídrico no seu baixo curso, tem provocado um avançado processo erosivo em função da vulnerabilidade do solo do talude da margem do rio e do caráter amplificado que algumas variáveis climáticas e hidrológicas. A consequência d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/05/2009
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19. Consequências climáticas da desertificação parcial do semi-árido do nordeste brasileiro / Climatic consequences of gradual desertification of the semi-arid region of northeast Brazil
The climatic impacts of partial desertification in the Semi-arid region of Northeast Brazil (SANEB) are evaluated by regional model (MM5) simulations. Maps of natural vegetation (without human influence; SANEB covered predominantly by dry shrubland known as caatinga), total desertification (replacement of the natural vegetation by desert in SANEB), partial d
Publicado em: 2009
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20. Dendrocronologia de árvores de mogno, Swietenia macrophylla King., Meliaceae, ocorrentes na floresta tropical Amazônica do Departamento de Madre de Dios, Peru / Dendrochronology of the mahogany trees, Swietenia macrophylla King., Meliaceae, occurring in the Amazon Rainforest of the Department of Madre de Dios, Peru
Studies in phenology and wood anatomy show a cyclical development and growth related to climatic conditions (temperature and rainfall) and site characteristics (competence, light, water storage in the soil, etc.), the sensibility to these factors results, for some tree species, in seasonality of cambium activity and formation of annual tree-rings. This chara
Publicado em: 2009
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21. RELATIONSHIP BETWEEN RIVERBANK EROSION, SOIL PHYSICAL CHARACTERISTICS AND HYDROLOGICAL AND CLIMATIC VARIABLES IN LOWER SÃO FRANCISCO RIVER. / RELAÇÃO ENTRE A EROSÃO MARGINAL, ATRIBUTOS FÍSICOS DO SOLO E VARIÁVEIS HIDROLÓGICAS E CLIMÁTICAS NO BAIXO SÃO FRANCISCO SERGIPANO
Em conseqüência da implantação de grandes projetos hidrelétricos no canal do rio São Francisco, a alteração do regime hídrico no seu baixo curso, tem provocado um avançado processo erosivo em função da vulnerabilidade do solo do talude da margem do rio e do caráter amplificado que algumas variáveis climáticas e hidrológicas. A consequência d
Publicado em: 2009
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22. Sugarcane crop efficiency in the State of São Paulo between growing seasons of 1990/1991 and 2005/2006. / Eficiência da produção agrícola de cana-de-açúcar no Estado de São Paulo entre as safras 1990/1991 e 2005/2006
The sugarcane is an important resource for food and energy production with scale to help the economy of fossil fuels and the development of new guidelines for socio-economic development in sustainable basis. The State of São Paulo is a region of great potential to meet the sugarcane demand in terms of sugar, ethanol and energy, since it has a long tradition
Publicado em: 2009
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23. Mudanças climáticas e a expectativa de seus impactos na cultura da cana-de-açúcar na região de Piracicaba, SP / Climate changes and their expected impacts on the sugarcane crop in the Piracicaba region, state of São Paulo, Brazil
Recent studies show increasingly higher concentrations of greenhouse effect gases in the atmosphere since the Industrial Revolution. The major responsibility for the global warming is attributed to such increase, caused by gases resulting mainly from anthropic activities like burning fossil combustibles and deforestation. Other than temperature, precipitatio
Publicado em: 2008
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24. Sthocastic model to estimate the soybean productivity in the State of São Paulo through bivaried normal simulation / Modelo estocástico para estimação da produtividade de soja no Estado de São Paulo utilizando simulação normal bivariada
The availability of resources, as much of financial order and human labor, is scarse. Therefore, it must stimulates the regional planning that minimizes the use of resources. Then, the forecast of harvests through modelling techniques must previously on the basis of be carried through the regional characteristics, thus indicating the routes of the research,
Publicado em: 2007