Composition and structure of aggregates from compacted soil horizons in the southern steppe zone of European Russia
- 作者: Sorokin A.1, Abrosimov K.2, Lebedeva M.2, Kust G.1
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隶属关系:
- Moscow State University
- Dokuchaev Soil Science Institute
- 期: 卷 49, 编号 3 (2016)
- 页面: 326-337
- 栏目: Soil Physics
- URL: https://journals.rcsi.science/1064-2293/article/view/223774
- DOI: https://doi.org/10.1134/S1064229316030108
- ID: 223774
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详细
The composition and structure of aggregates from different agrogenic soils in the southern steppe zone of European Russia have been studied. It is shown that the multi-level study (from the macro- to microlevel) of these horizons makes it possible to identify soil compaction caused by different elementary soil processes: solonetz-forming, vertisol-forming, and mechanical (wheel) compaction in the rainfed and irrigated soils. The understanding of the genesis of the compaction of soil horizons (natural or anthropogenic) is important for the economic evaluation of soil degradation. It should enable us to make more exact predictions of the rates of degradation processes and undertake adequate mitigation measures. The combined tomographic and micromorphological studies of aggregates of 1–2 and 3–5 mm in diameter from compacted horizons of different soils have been performed for the first time. Additional diagnostic features of negative solonetz- forming processes (low open porosity of aggregates seen on tomograms and filling of a considerable part of the intraped pores with mobile substance) and the vertisol-forming processes (large amount of fine intraaggregate pores seen on tomograms and a virtual absence of humus–clay plasma in the intraped zone)—have been identified. It is shown that the combination of microtomographic and micromorphological methods is helpful for studying the pore space of compacted horizons in cultivated soils.
作者简介
A. Sorokin
Moscow State University
编辑信件的主要联系方式.
Email: leshasorokin@gmail.com
俄罗斯联邦, Moscow, 119991
K. Abrosimov
Dokuchaev Soil Science Institute
Email: leshasorokin@gmail.com
俄罗斯联邦, Pyzhevskii per. 7, Moscow, 119017
M. Lebedeva
Dokuchaev Soil Science Institute
Email: leshasorokin@gmail.com
俄罗斯联邦, Pyzhevskii per. 7, Moscow, 119017
G. Kust
Moscow State University
Email: leshasorokin@gmail.com
俄罗斯联邦, Moscow, 119991