Results 21 to 30 of about 65,909 (309)

Vegetation structure determines the spatial variability of soil biodiversity across biomes

Scientific Reports, 2020
The factors controlling the spatial variability of soil biodiversity remain largely undetermined. We conducted a global field survey to evaluate how and why the within-site spatial variability of soil biodiversity (i.e. richness and community composition)
Jorge Durán, Manuel Delgado-Baquerizo
doaj   +1 more source

Spatial variability of soil fertility under agroforestry system and native forest in eastern Amazonia, Brazil

Bioscience Journal, 2023
The usage of spatial tools might be helpful in the optimization of decision-making regarding soil management, with technologies that assist in the interpretation of information related to soil fertility. Therefore, the present study evaluated the spatial
Cassio Rafael Costa dos Santos, Augusto Takayuki Matsunaga, Luiz Rodolfo Reis Costa, Mario Lima dos Santos, Alberto Bentes Brasil Neto, Richard Pinheiro Rodrigues, Maria de Nazaré Martins Maciel, Vânia Silva de Melo   +7 more
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Spatial variability of apparent electrical conductivity and soil properties in a coffee production field [PDF]

Engenharia Agrícola, 2014
Precision agriculture based on the physical and chemical properties of soil requires dense sampling to determine the spatial variability of these properties. This dense sampling is often expensive and time-consuming.
Domingos S. M. Valente, Daniel M. de Queiroz, Francisco de A. de C. Pinto, Fábio L. Santos, Nerilson T. Santos   +4 more
doaj   +1 more source

Stochastic analysis of excavation-induced wall deflection and box culvert settlement considering spatial variability of soil stiffness

Journal of Rock Mechanics and Geotechnical Engineering, 2023
In this study, a three-dimensional (3D) finite element modelling (FEM) analysis is carried out to investigate the effects of soil spatial variability on the response of retaining walls and an adjacent box culvert due to a braced excavation.
Ping Li, Shiwei Liu, Jian Ji, Xuanming Ding, Mengdie Bao   +4 more
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Research on the Spatial Variability of Soil Moisture [PDF]

, 2009
China is a country seriously suffering from the lack of water resource, especially the north of China (a dense area) where there are more agricultural production than other places in China. Therefore, some have become most important problems which should be settled down right now for precision agriculture: saving the water of agriculture, optimizing ...
Changli Zhang, Shuqiang Liu, Xianyue Zhang, Kezhu Tan   +3 more
openaire   +1 more source

An analysis of the effects of spatial variability of soil and soil moisture on runoff [PDF]

Water Resources Research, 1997
Hydrological variables and processes usually exhibit a large spatial variability. Often this variability includes aspects of organization and randomness. Because any hydrological modeling has to deal with the question of spatial variability, methods that quantify the effects of spatial variability are valuable. Moreover, it is important to identify the
Merz, B., Plate, E.
openaire   +2 more sources

Regularity of spatial variability of soil infiltration and its variation sources

Shui kexue jinzhan, 2013
The influence of land use types on soil infiltration is one of the hot research topics in soil hydrology.In this research,four typical land use types in the Fengqiu region were chosen to systematically study the intensity,structure and main sources of ...
HE Dan, MA Donghao, ZHANG Xizhou, ZHANG Jiabao, ZHENG Zicheng   +4 more
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Geostatistical methods applied to soil fertility zoning

Revista de Ciencias Agrícolas, 2022
In conventional agricultural production systems, soil management is generally carried out without considering the spatial variability of its properties.
Cesar Albornoz-Bucheli, Carlos Benavides-Cardona, Diego Muñoz-Guerrero   +2 more
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SPATIAL CONTINUITY OF ELECTRICAL CONDUCTIVITY, SOIL WATER CONTENT AND TEXTURE ON A CULTIVATED AREA WITH CANE SUGAR

Revista Caatinga, 2018
Spatial variability of soil attributes affects crop development. Thus, information on its variability assists in soil and plant integrated management systems.
JUCICLÉIA SOARES DA SILVA, ÊNIO FARIAS DE FRANÇA E SILVA, GLÉCIO MACHADO SIQUEIRA, GERÔNIMO FERREIRA DA SILVA, DIEGO HENRIQUE SILVA DE SOUZA   +4 more
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Quantitative Evaluation of the Spatial Variation of Surface Soil Properties in a Typical Alluvial Plain of the Lower Yellow River Using Classical Statistics, Geostatistics and Single Fractal and Multifractal Methods

Applied Sciences, 2020
The spatial variability of soil properties has always been a significant research field in geoscience. The types of soil properties cover a wide range, but most studies have focused on the spatial variability of soil physicochemical properties over the ...
Jiang Zhan, Yujiang He, Guizhang Zhao, Zhiping Li, Qiaoling Yuan, Lili Liu   +5 more
doaj   +1 more source