Contact angles of wetting and water stability of soil structure

Kholodov, V.A.; Yaroslavtseva, N.V.; Yashin, M.A.; Frid, A.S.; Lazarev, V.I.; Tyugai, Z.N.; Milanovskiy, E.Y.

Авторы: Kholodov V.A., Yaroslavtseva N.V., Yashin M.A., Frid A.S., Lazarev V.I., Tyugai Z.N., Milanovskiy E.Yu
Журнал: Eurasian Soil Science
Том: 48
Номер: 6
Год издания: 2015
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 600
Последняя страница: 607
DOI: 10.1134/S106422931506006X
Аннотация: From the soddy-podzolic soils and typical chernozems of different texture and land use, dry 3-1 mm aggregates were isolated and sieved in water. As a result, water-stable aggregates and water-unstable particles composing dry 3-1 mm aggregates were obtained. These preparations were ground, and contact angles of wetting were determined by the static sessile drop method. The angles varied from 11A degrees to 85A degrees. In most cases, the values of the angles for the water-stable aggregates significantly exceeded those for the water-unstable components. In terms of carbon content in structural units, there was no correlation between these parameters. When analyzing the soil varieties separately, the significant positive correlation between the carbon content and contact angle of aggregates was revealed only for the loamy-clayey typical chernozem. Based on the multivariate analysis of variance, the value of contact wetting angle was shown to be determined by the structural units belonging to water-stable or water-unstable components of macroaggregates and by the land use type. In addition, along with these parameters, the texture has an indirect effect.
Добавил в систему: Милановский Евгений Юрьевич

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