نتایج جستجو برای: semivariogram

تعداد نتایج: 276  

Journal: :International Journal of Plant and Soil Science 2022

Phosphorus (P) and potassium (K) are two major nutrients for agricultural productivity sustainability. The spatial variability maps of soil phosphorus content in surfacesoils collected through grid sampling technique were developed using geo-spatial technology Indian Council Agricultural Research-Indian Research Institute (ICAR-IARI) farm, New Delhi, India. Soil available P (NaHCO3-P) P-fractio...

خسروی, رسول, همامی, محمود رضا, منصوره, ملکیان,

Climatic change can impose physiological constraints on species and can therefore affect species distribution. Bioclimatic predictors, including annual trends, regimes, thresholds and bio-limiting factors are the most important independent variables in species distribution models. Water and temperature are the most limiting factors in arid ecosystem in central Iran. Therefore, mapping of climat...

Journal: :Applied and Environmental Soil Science 2023

Foumban, located in the Noun valley western Cameroon, is a prime location for food production. However, this locality experiencing significant decline productivity due to acidity of its soil. This linked behaviour certain soil properties essential plant growth. The present work aims study pH as function chemical parameters such CEC, organic matter, exchangeable bases, and aluminum map spatial s...

Journal: :Scientific Review Engineering and Environmental Sciences 2023

The GIS-aided spatial interpolation was applied on collected groundwater data to predict selected parameters (i.e., pH, electrical conductivity, and temperature) for the water wells distributed over Mosul City in Iraq. A descriptive statistical analysis conducted samples explore indices. skewness test also employed distribution of sets around their mean values. natural logarithms function achie...

Journal: :Revista geográfica venezolana 2023

We performed a comparison between the interpolation methods of Kriging and Least Squares Collocation. This allowed to obtain an optimal velocity model earth’s crust for continental Ecuador from field ITRF2008 obtained with GNSS data in period 2008-2014. The best fitting semivariograms two components were Spherical Stable semivariogram. functional Collocation method was third order East componen...

Journal: :Building of Informatics, Technology and Science (BITS) 2022

This research focuses on making classification maps using the Classification And Regression Trees (CART), Random Forest and Ordinary Kriging methods. The dataset used is data from Area Traffic Control System (ATCS) of Bandung City Transportation Agency Google Maps application in April 2022. After obtained, then pre-processing process will be carried out CART learning models made, after complete...

2013
Aman Tyagi Preetvanti Singh

Environment pollution is a major problem in developing countries these days. Air pollution in particularis a cause of many diseases.In the present study an attempt has been made to map the pollution areas of Agra and predict the pollution at unsampled location.For this thirty places of Agra are selected for collectingair samples.Geographic Information System (GIS) and Kriging (Ordinary Kriging)...

2001
A.P.F. Atman A. Paz Gonzalez

A modeling of the soil structure and surface roughness by means of the concepts of the fractal growth is presented. Two parameters are used to control the model: the fragmentation dimension, Df , and the maximum mass of the deposited aggregates, Mmax. The fragmentation dimension is related to the particle size distribution through the relation N(r ≥ R) ∼ Rf , where N(r ≥ R) is the accumulative ...

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