Changes in the Ratio of Aggregate Fractions in Humus Horizons of Chernozems in Response to the Type of Their Use
| العنوان: | Changes in the Ratio of Aggregate Fractions in Humus Horizons of Chernozems in Response to the Type of Their Use |
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| المؤلفون: | Yu. R. Farkhodov, V. I. Lazarev, V. P. Belobrov, A. Ya. Aydiev, V. A. Kholodov, N. V. Yaroslavtseva, A. S. Frid, S. A. Yudin |
| المصدر: | Eurasian Soil Science. 52:162-170 |
| بيانات النشر: | Pleiades Publishing Ltd, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Chemistry, Aggregate (data warehouse), Soil Science, Soil classification, Soil science, 04 agricultural and veterinary sciences, 010501 environmental sciences, 01 natural sciences, Humus, Soil structure, Soil retrogression and degradation, Principal component analysis, Soil water, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, Organic matter, 0105 earth and related environmental sciences, Earth-Surface Processes |
| الوصف: | Data on the aggregate-size distribution (dry sifting method) in humus horizons of chernozems were processed by principal components analysis (PCA) with the centered logratio transformation of the initial data set. The analysis of the positions of treatments in the space of principal components coupled with the analysis of eigenvector magnitudes made it possible to identify several size fractions of aggregates, whose contents in the soils reflect soil degradation or progradation processes. These groups fitted well to the partial lognormal curves of aggregate sizes. In addition, the distribution of water-stable aggregates in coarse aggregate fractions (>10, 10–7, 7–5, and 5–3 mm) was analyzed. The integral analysis of the obtained data made it possible to propose the following conceptual model of the recovery of the structure of tilled chernozems. In the course of tillage, soil particles 10 mm) water-unstable aggregates (clods). With the removal of tillage loads, large aggregates interact with fresh organic matter, and the water stability of aggregates increases. At the same time, the largest aggregates (mainly >10 mm) tend to transform into aggregates of smaller sizes. |
| تدمد: | 1556-195X 1064-2293 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::6bee00e4ada510633e973ccbd9950493 https://doi.org/10.1134/s1064229319020066 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........6bee00e4ada510633e973ccbd9950493 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 1556195X 10642293 |
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