Results 11 to 20 of about 576,877 (314)

Geostatistics: Modelling spatial variation

, 2023
Geostatistics, which was developed originally for mining, is now widely used for prediction of soil conditions at unvisited sites and for mapping from sample survey data. The technique is based on models of spatial variation. Soil properties are treated as the outcomes of random spatially correlated processes, to which may be added fixed effects of ...
Webster, R., R. Webster
openaire   +2 more sources

Spatial Variability of Shortwave Irradiance for Snowmelt in Forests [PDF]

, 2008
The spatial variation of melt energy can influence snow cover depletion rates and in turn be influenced by the spatial variability of shortwave irradiance to snow.
Sicart, Jean-Emmanuel, John Pomeroy, Link, Tim, Essery, Richard; id_orcid, Marks, Danny, Marks, D., Ellis, C., Pomeroy, J., Hardy, Janet, Rowlands, A., Rowlands, Aled, Janet Hardy, Sicart, Jean Emmanuel, Ellis, Chad, Danny Marks, Aled Rowlands, Tim Link, Essery, R., Link, T., Pomeroy, John, Hardy, J.   +20 more
core   +1 more source

Effect of seasons on spatial variability of rainfall in the Niger Delta, Nigeria

Journal of Applied Sciences and Environmental Management, 2018
The seasons are the important component of rainfall seasonality that determines the flourishing of agricultural and socio-economic activities in the tropics.
J.O. Adejuwon
doaj   +1 more source

Spatial parasite ecology and epidemiology: a review of methods and applications. [PDF]

, 2012
The distributions of parasitic diseases are determined by complex factors, including many that are distributed in space. A variety of statistical methods are now readily accessible to researchers providing opportunities for describing and ultimately ...
Pullan, Rachel L, Brooker, Simon J., Soares Magalhães, Ricardo J, Sturrock, Hugh J. W., Clements, Archie CA, Pullan, Rachel L., Clements, Archie C. A., Soares Magalhaes, Ricardo J., Brooker, Simon J, Sturrock, Hugh JW   +9 more
core   +1 more source

Evaluation of spatial–temporal characteristics of precipitation using discrete maximal overlap wavelet transform and spatial clustering tools

Hydrology Research, 2021
In the present study, classical and proposed methods were used to investigate the monthly precipitation characteristics of 30 stations in the southeastern United States during 1968–2018. Maximal overlap discrete wavelet transform (MODWT) as preprocessing
Kiyoumars Roushangar, Mohsen Moghaddas, Roghayeh Ghasempour, Farhad Alizadeh   +3 more
doaj   +1 more source

Spatial Variation in Soil Fungal Communities across Paddy Fields in Subtropical China

mSystems, 2020
Fungi underpin almost all terrestrial ecosystem functions, yet our understanding of their community ecology lags far behind that of other organisms. Here, red paddy soils in subtropical China were collected across a soil depth profile, comprising 0-to-10-
Pengfa Li, Weitao Li, Alex J. Dumbrell, Ming Liu, Guilong Li, Meng Wu, Chunyu Jiang, Zhongpei Li   +7 more
doaj   +1 more source

Effects of different tea plantation management systems on arthropod assemblages and network structure

Ecosphere, 2021
Tea plantations are intensive monocultures and vulnerable to various pests due to a low diversity of natural enemies. In ancient tea plantations, the trees have grown for hundreds of years in mixed stands with many native trees, resulting in a landscape ...
Yuanyuan Meng, Hui Chen, Jocelyn E. Behm, Shangwen Xia, Bo Wang, Shengjie Liu, Xiaodong Yang   +6 more
doaj   +1 more source

Study on the spatial variation of China’s territorial ecological space based on the standard deviation ellipse

Frontiers in Environmental Science, 2022
With the rapid development of China’s economy and the acceleration of urbanization, the rapid expansion of urban space has led to a growing demand for land that has resulted in the destruction and expropriation of a large amount of ecological land in ...
Yang Zhang, Yang Zhang, Ping Jiang, Liye Cui, Yang Yang, Yang Yang, Zijun Ma, Zijun Ma, Yan Wang, Yan Wang, Donghui Miao, Donghui Miao   +11 more
doaj   +1 more source

New record of Trichodesmium thiebautii Gomont ex Gomont (Oscillatoriales - Cyanophyta) for the continental shelf of northeastern Brazil Novo registro de Trichodesmium thiebautii Gomont ex Gomont (Oscillatoriales - Cyanophyta) para a plataforma continental do Nordeste do Brasil

Acta Botânica Brasílica, 2010
This study reports the first occurrence of Trichodesmiumthiebautii Gomont ex Gomont on the coast of northeastern Brazil. Samples were gathered during the rainy season (July 2005) and the dry season (November 2006) at six stations distributed along two ...
José Juarez Ferreira Monteiro, Enide Eskinazi Leça, Maria Luise Koening, Silvio José de Macedo   +3 more
doaj   +1 more source

Spatial Properties of Soil Physical Quality Index S in Black Soil Croplands under Permanent Gully Erosion

Land, 2023
Soil physical quality (SPQ) is a limiting factor affecting crop production. However, the impact of gully erosion on the SPQ index S, defined by Dexter as the inflection point of the soil water retention curve (SWRC), remains unclear, especially when ...
Yangbo He, Xingsheng Song, Xinyue Li, Yuhao Gao, Jingde Yang, Junxi Chen, Jiazhou Chen, Chongfa Cai   +7 more
doaj   +1 more source