Results 11 to 20 of about 2,273 (218)

Improving 3D Digital Soil Mapping Based on Spatialized Lab Soil Spectral Information

Remote Sensing, 2023
Readily available environmental covariates in current digital soil mapping usually do not indicate the spatial differences between deep soil attributes.
Zheng Sun, Feng Liu, Decai Wang, Huayong Wu, Ganlin Zhang   +4 more
doaj   +1 more source

Digital Mapping of Surface and Subsurface Soil Organic Carbon and Soil Salinity Variation in a Part of Qazvin Plain (Case Study: Abyek and Nazarabad Regions) [PDF]

مجله آب و خاک, 2023
IntroductionKnowledge of the spatial distribution of soil salinity and soil organic carbon (SOC) leads to obtaining valuable information that is effective in decision-making for agricultural activities.
Gordafarin Rezaie, F. Sarmadian, Ali Mohammadi Torkashvand, J. Seyedmohammadi, Maryam Marashi Aliabadi   +4 more
doaj   +1 more source

Digital Mapping of Soil Organic Carbon Using Machine Learning Algorithms in the Upper Brahmaputra Valley of Northeastern India

Land, 2023
Soil Organic Carbon (SOC) is a crucial indicator of ecosystem health and soil quality. Machine learning (ML) models that predict soil quality based on environmental parameters are becoming more prevalent.
Amit Kumar, Pravash Chandra Moharana, Roomesh Kumar Jena, Sandeep Kumar Malyan, Gulshan Kumar Sharma, Ram Kishor Fagodiya, Aftab Ahmad Shabnam, Dharmendra Kumar Jigyasu, Kasthala Mary Vijaya Kumari, Subramanian Gandhi Doss   +9 more
doaj   +1 more source

Genetic and Environmental Contributions to the Covariation Between Cardiometabolic Traits [PDF]

Journal of the American Heart Association, 2018
Background The variation and covariation for many cardiometabolic traits have been decomposed into genetic and environmental fractions, by using twin or single‐nucleotide polymorphism ( SNP ) models.
Chen X., Kuja-Halkola R., Chang Z., Karlsson R., Hägg S., Pedersen N.L., Magnusson P.K.E., Svensson P.   +7 more
openaire   +5 more sources

Mapping soil organic matter content using Sentinel-2 synthetic images at different time intervals in Northeast China

International Journal of Digital Earth, 2023
Mapping soil organic matter (SOM) content has become an important application of digital soil mapping. In this study, we processed all Sentinel-2 images covering the bare-soil period (March to June) in Northeast China from 2019 to 2022 and integrated the
Chong Luo, Wenqi Zhang, Xinle Zhang, Huanjun Liu   +3 more
doaj   +1 more source

Covariability of Vibrio cholerae Microdiversity and Environmental Parameters [PDF]

Applied and Environmental Microbiology, 2008
ABSTRACT Fine-scale diversity of natural bacterial assemblages has been attributed to neutral radiation because correspondence between bacterial phylogenetic signals in the natural environment and environmental parameters had not been detected. Evidence that such correspondence occurs is provided for Vibrio cholerae
Young-Gun, Zo, Nipa, Chokesajjawatee, Eiji, Arakawa, Haruo, Watanabe, Anwar, Huq, Rita R, Colwell   +5 more
openaire   +2 more sources

Effects of environmental and physiological covariates on sex differences in unconditioned and conditioned anxiety and fear in a large sample of genetically heterogeneous (N/Nih-HS) rats

Behavioral and Brain Functions, 2011
Physiological and environmental variables, or covariates, can account for an important portion of the variability observed in behavioural/physiological results from different laboratories even when using the same type of animals and phenotyping ...
López-Aumatell Regina, Martínez-Membrives Esther, Vicens-Costa Elia, Cañete Toni, Blázquez Gloria, Mont-Cardona Carme, Johannesson Martina, Flint Jonathan, Tobeña Adolf, Fernández-Teruel Alberto   +9 more
doaj   +1 more source

Using LISREL to analyze genetic and environmental covariance structure [PDF]

Behavior Genetics, 1986
Describes a method in which the linear structural relationships (LISREL) computer program is used for the genetic analysis of covariance structure. The method is illustrated with simulated and published twin data, including an analysis of twin data by N. G. Martin et al (1981) on psychomotor performance during alcohol intoxication.
Boomsma, D.I., Molenaar, P.C.M.
openaire   +5 more sources

Extending Finlay–Wilkinson regression with environmental covariates

Plant Breeding, 2023
Abstract Finlay–Wilkinson regression is a popular method for analysing genotype–environment interaction in series of plant breeding and variety trials. It involves a regression on the environmental mean, indexing the productivity of an environment, which is driven by a wide array of environmental factors.
Piepho, Hans‐peter, Blancon, Justin
openaire   +3 more sources

Assessing Machine Learning-Based Prediction under Different Agricultural Practices for Digital Mapping of Soil Organic Carbon and Available Phosphorus

Agriculture, 2022
Predicting soil chemical properties such as soil organic carbon (SOC) and available phosphorus (Ava-P) content is critical in areas where different land uses exist. The distribution of SOC and Ava-P is influenced by both natural and anthropogenic factors.
Fuat Kaya, Ali Keshavarzi, Rosa Francaviglia, Gordana Kaplan, Levent Başayiğit, Mert Dedeoğlu   +5 more
doaj   +1 more source