Spatial Variability of the Physical Properties and Water Regime of Typical Chernozemстатья
Информация о цитировании статьи получена из
Scopus,
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 5 декабря 2014 г.
Аннотация:The water regime of clay-loamy deep typical chernozem (Voronezh oblast) is evaluated in terms of the probability of the occurrence of periods of water deficit (PD) and overwetting (PO) for 21 points on the field under investigation. Experimental data show that the values of PD and PO in the upper (0 40 cm) layer of soil are related mainly to precipitation, evaporation, and the initial conditions (initial water reserves and pF); in the bottom (60 80 cm) layer of soil, they mainly depend on the initial conditions, the bulk density of the soil, and the content of physical clay. Among the soil properties that influence water removal outflow at standardized initial and boundary conditions and the prognostic values of PD and PO, the bulk density of soil, filtration coefficient Kf (or absorption coefficient Kab), the Kachinskii factor of dispersity, and the depth of effervescence with HCl are the most important.