Results 31 to 40 of about 9,408 (217)

Some aspects about the spatial dependence index for variability of soil attributes

open access: yesCiência Rural, 2018
: The main purpose of this article was to evaluate the behavior and relationship of the range and components of SDI (Spatial Dependence Index) in general and in function of field factors such as soil types, type of attribute and soil layers.
Eduardo Lucas Ensslin dos Santos   +5 more
doaj   +1 more source

GEOSTATISTICAL ANALYSIS OF SOIL PROPERTIES OF THE KARSTIC SUB-HORIZONTAL PLAIN OF THE YUCATAN PENINSULA

open access: yesTropical and Subtropical Agroecosystems, 2021
Background: In recently formed karst environments, as in the north of the state of Yucatan, Mexico, many chemical and physical properties of soils have a high spatial heterogeneity.
Francisco Bautista
doaj   +1 more source

Species‐Specific Genetic Patterns in Sympatric Freshwater Turtles Challenge a Generalized Multi‐Species Conservation Approach

open access: yesAnimal Conservation, EarlyView.
We compared genetic diversity and spatial genetic structure in the snapping turtle (Chelydra serpentina; left panel), Blanding's turtle (Emydoidea blandingii; bottom right), and spotted turtle (Clemmys guttata; top right) sampled in areas of co‐occurrence across ~49,160 km2.
Christina M. Davy   +3 more
wiley   +1 more source

Spatial Distribution Characteristics of Heavy Metals in Surface Soil of Xilinguole Coal Mining Area Based on Semivariogram

open access: yesISPRS International Journal of Geo-Information, 2021
Heavy metal pollution is a major environmental problem facing humankind. Locating the source and distribution of heavy metal pollutants around mines can provide a scientific basis for environmental control.
Guoqing Chen   +3 more
doaj   +1 more source

A Non‐Parametric Framework for Correlation Functions on Product Metric Spaces

open access: yesInternational Statistical Review, EarlyView.
Summary We propose a non‐parametric framework for analysing data defined over products of metric spaces, a versatile class encountered in various fields. This framework accommodates non‐stationarity and seasonality and is applicable to both local and global domains, such as the Earth's surface, as well as domains evolving over linear time or time ...
Pier Giovanni Bissiri   +3 more
wiley   +1 more source

Spatial heterogeneity of surface roughness on tilled loess slopes in erosion stages

open access: yesSoil and Water Research, 2018
The main soil erosion areas of the Chinese Loess Plateau are tilled slopes. The knowledge of their spatial heterogeneity will contribute to the understanding of erosion mechanisms on a microtopographic scale.
Qingfeng ZHANG, Jian WANG, Faqi WU
doaj   +1 more source

Airborne Radar Reveals Area‐Wide Decadal Increase of Surface Mass Balance on the Plateau in Dronning Maud Land, East Antarctica

open access: yesGeophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Projections of Antarctica's sea‐level contribution depend on future changes in surface mass balance (SMB), yet it remains uncertain whether climate change has already impacted SMB on the East Antarctic Plateau, given diverging trends in prior studies.
Alexandra M. Zuhr   +7 more
wiley   +1 more source

Variabilidade espacial de variáveis geobiofísicas nas nascentes da bacia hidrográfica do Ribeirão Santa Cruz Spatial variability of geobiophysical variables in the springs of the Ribeirão Santa Cruz watershed

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2008
Objetivou-se, em Lavras, MG, caracterizar a estrutura e a magnitude de dependência espacial de variáveis ambientais nas nascentes da bacia hidrográfica do Ribeirão Santa Cruz, por métodos de interpolação geoestatística.
Marcelo de C. Alves   +6 more
doaj   +1 more source

Climatology and Trends in Spatial Scales of Extreme Precipitation Over Land in the Contiguous US

open access: yesGeophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Extreme precipitation (EP) poses a severe risk under a changing climate. Here we use daily gridded precipitation data (1980–2024) and a connected‐component labeling algorithm to characterize the climatology and regional trends of daily EP spatial scale over land in the contiguous United States (US).
Trinish Chatterjee   +3 more
wiley   +1 more source

Spatial and Temporal Stability of Weed Patches in Cereal Fields under Direct Drilling and Harrow Tillage

open access: yesAgronomy, 2020
The adoption of conservation agriculture (CA) techniques by farmers is changing the dynamics of weed communities in cereal fields and so potentially their spatial distribution.
Jordi Izquierdo   +6 more
doaj   +1 more source

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