Open AccessSpatial variability of the structural state of soils in rainfed and irrigated regions of Azerbaijan
Author(s) -
N. G. Hummatov
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/368/1/012018
Subject(s) - geostatistics , soil water , spatial variability , spatial dependence , irrigation , soil science , rainfed agriculture , mathematics , hydrology (agriculture) , environmental science , statistics , geology , agronomy , geotechnical engineering , biology
Regularities of spatial variability of the structural state of soils in rainfed and irrigated regions of Azerbaijan are discussed with application of classical statistics and geostatistics. The highest coefficient of variation is observed for water-stable aggregates >3 mm (106 %), and the lowest – for 10-0.25 mm (7.9 %). The results of geostatistical analysis show a strong spatial dependence of the indicators of wet sieving at irrigation. Structural indicators are mainly approximated by spherical and exponential models in irrigated soils, but in rainfed conditions, by linear models.