Cross Semivariogram
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Soil water content and net precipitation spatial variability in an Atlantic forest remnant
ABSTRACT. This study was carried out in an Atlantic forest remnant in Southeastern Brazil and aimed to spatially model the soil water content (SWC) and net precipitation (NP) on a monthly time scale and to assess the spatial behavior of these hydrological variables in the different seasons. NP is defined by summing throughfall and stemflow, which have been c
Acta Sci., Agron.. Publicado em: 21/10/2019
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2. Avaliação de técnicas geoestatísticas no inventário de povoamentos de Tectona grandis L.f. / Evaluation of geostatistics in inventory of Tectona grandis L.f. stands
The general objective of this work was to evaluate if estimates of wood volume obtained from geostatistics techniques are more accurate than those obtained from classical statistical techniques.The study was conducted in stands of Tectona grandis L.f. with the dendometric volume trait measured in 101 plots laid along a sampling spacing with UTM coordinates,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/06/2011
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3. Geostatistical analysis of crop yield maps in a long term no tillage system.
It is known, for a long time, that crop yields are not uniform at the field. In some places, it is possible to distinguish sites with both low and high yields even within the same area. This work aimed to evaluate the spatial and temporal variability of some crop yields and to identify potential zones for site specific management in an area under no-tillage
Bragantia. Publicado em: 2011
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4. Spatial Variability of Some Soil Physical Properties in Three Soils of Sao Paulo, Brazil.
Volumetric core samples and loose soil samples were collected at 1 m interval in 10 m long transects, on three major soil groups in São Paulo, Brazil. The soil cores were used for soil desorption curves and the bulk density, and the loose soil was used for particle size analysis. The parameters obtained from the soil water retention model, bulk density and
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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5. Spatial and temporal soil moisture behavior at a watershed of the Mantiqueira Range, Minas Gerais. / âCOMPORTAMENTO ESPACIAL E TEMPORAL DA UMIDADE DO SOLO NUMA BACIA HIDROGRÃFICA NA SERRA DA MANTIQUEIRA, MINAS GERAISâ.
The qualitative and quantitative evaluation of the use and exploration of water resources at a watershed has been relevant on environmental context. The soil moisture consists of an important hydrological variable that determine the evapotranspiration and surface runoff production. This work aimed to analyze the spatial and temporal behavior of the soil mois
Publicado em: 2008
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6. Co-estimation geostatistical methods: a study of the correlation between variables at results precision / Métodos geoestatísticos de co-estimativas: estudo do efeito da correlação entre variáveis na precisão dos resultados
This master dissertation presents the results of a survey into co-estimation methods commonly used in geostatistics. These methods are ordinary cokriging, collocated cokriging and kriging with an external drift. Besides that ordinary kriging was considered just to illustrate how it does work when the primary variable is poorly sampled. As we know co-estimati
Publicado em: 2008
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7. Caracterização fisica dos solos de uma microbacia degradada em Vera Cruz, SP
The knowledgement of soil physical properties in a catchment basin, in special at places which show signs of erosion and degradation, represent the flfst step for a successful conservation planning as well as to provide additional information for the application of mathematical models that determine the soil erosion potential. This study was carried out to c
Publicado em: 1998