Results 81 to 90 of about 31,493 (191)

Topography and spatial variability of soil physical properties Topografia e variabilidade espacial de propriedades físicas do solo

open access: yesScientia Agricola, 2009
Among the soil formation factors, relief is one of the most used in soil mapping, because of its strong correlation with the spatial variability of soil attributes over a landscape.
Marcos Bacis Ceddia   +5 more
doaj   +1 more source

Bayesian hierarchical models for analysing the spatial distribution of bioclimatic indices [PDF]

open access: yes, 2017
A methodological approach for modelling the spatial distribution of bioclimatic indices is proposed in this paper. The value of the bioclimatic index is modelled with a hierarchical Bayesian model that incorporates both structured and unstructured random
Barber, Antoni   +5 more
core  

Comment on Article by Ferreira and Gamerman

open access: yes, 2015
Comment on Article by Ferreira and Gamerman [arXiv:1509.03410].Comment: Published at http://dx.doi.org/10.1214/15-BA944C in the Bayesian Analysis (http://projecteuclid.org/euclid.ba) by the International Society of Bayesian Analysis (http://bayesian ...
Zidek, James V.
core   +1 more source

Bayesian Geostatistical Design

open access: yesScandinavian Journal of Statistics, 2006
A Bayesian approach is described to the prediction of a spatial surface \(S\) over a region \(A\) using data which consist of imperfect measurements \(Y_i\) at a finite collection of sampling locations \(x_i\): \(\mathbf{E}[Y_i]=S(x_i)\). The retrospective design (in which locations are to be deleted from or added to an existing design) and perspective
Diggle, P, Lophaven, S
openaire   +3 more sources

Spatial distributional estimation via ensemble spatial analysis

open access: yesAIMS Mathematics
This paper introduces a novel data-driven methodology for estimating the full random field (random function) of a regionalized variable, building upon and extending the concepts of ensemble spatial interpolation and adaptive ensemble spatial analysis ...
Alvaro F. Egaña   +4 more
doaj   +1 more source

Improvements in turfgrass color and density resulting from comprehensive soil diagnostics [PDF]

open access: yes, 2001
There are roughly 220 golf courses in Arkansas, and as many as 50% of these courses were constructed using common bermudagrass fairways. Although resilient, common bermudagrass loses density and quality over time. In this experiment physical and chemical
Cordell, Matt   +2 more
core   +2 more sources

Spatial and temporal variability of soil electrical conductivity related to soil moisture

open access: yesScientia Agricola, 2013
Soil electrical conductivity (ECa) is a soil quality indicator associated to attributes interesting to site-specific soil management such as soil moisture and texture.
José Paulo Molin   +1 more
doaj   +1 more source

Terrain forms and spatial variability of soil properties in an area cultivatedwith citrus Formas do relevo e variabilidade espacial de propriedades do solo em área cultivada com citros

open access: yesEngenharia Agrícola, 2011
The technique of precision agriculture and soil-landscape allows delimiting areas for localized management, allowing a localized application of agricultural inputs and thereby may contribute to preservation of natural resources.
Marisol G. A. de Leão   +4 more
doaj   +1 more source

Organic residues - a resource for arable soils [PDF]

open access: yes, 2005
An increased recirculation of urban organic residues to arable soils has several environmental benefits, but there is a need for reliable test systems to ensure that soil quality is maintained.
Odlare, Monica
core  

Spatio-temporal variability of erosivity in Mato Grosso, Brazil

open access: yesRevista Ambiente & Água, 2018
The impact of rainfall on surfaces lacking vegetal cover can dissociate soil particles, thereby initiating the erosion process. This is known as rainfall erosivity and is expressed by the R factor in the Universal Soil Loss Equation.
Luis Augusto Di Loreto Di Raimo   +7 more
doaj   +1 more source

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