Email this article Influence of water erosion on the structure and content of labile humic substances in the structural-aggregate fractions of leached chernozems of the Central Chernozem region
- Authors: Vasenev I.I.1, Gorbunova N.S.2, Gromovik A.I.2, Devyatova T.A.2
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Affiliations:
- Russian State Agrarian University - Moscow Timiryazev Agricultural Academy
- Voronezh State University
- Issue: Vol 17, No 3 (2022)
- Pages: 315-330
- Section: Soil science and agrochemistry
- URL: https://journal-vniispk.ru/2312-797X/article/view/315629
- DOI: https://doi.org/10.22363/2312-797X-2022-17-3-315-330
- ID: 315629
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Abstract
The structural-aggregate composition of leached chernozems (Voronic Chernozems Pachic according to WRB-2014), the distribution of organic compounds Corg and labile humic substances (LHS) in the structural-aggregate fractions of carbon in the conditions of a slope type of terrain during the development of erosion were studied. The work was carried out in the northern part of the Voronezh region on the catena, which included a section of the watershed, smoothly turning into a southwestern slope about 1500 m long and 5˚ steep. The soils of the following sections of the catena were studied: 1) the watershed part; 2) the upper part of the slope; 3) the middle part of the slope. It was shown that degradation of the structural-aggregate state occurs in eroded chernozems, accompanied by a deterioration in microstructurality, a decrease in the number of mesoaggregates and a structural coefficient, as well as a loss of a water-resistant structure. According to the results, LHS play a very important role in maintaining the water-stable structure of chernozems. The most significant contribution to the content of Corg contribute mesoaggregates 5-1 mm in size, which are actively lost during the development of erosion.
About the authors
Ivan I. Vasenev
Russian State Agrarian University - Moscow Timiryazev Agricultural Academy
Author for correspondence.
Email: vasenev@rgau-msha.ru
ORCID iD: 0000-0001-9127-9569
Doctor of Biological Sciences, Professor, Head of Department of Ecology
49 Timiryazevskaya st., Moscow, 127550, Russian FederationNadezhda S. Gorbunova
Voronezh State University
Email: vilian@list.ru
ORCID iD: 0000-0002-7986-8106
Candidate of Biological Sciences, Associate Professor, Department of Ecology and Land Resources
1 Universitetskaya sq., Voronezh, 394018, Russian FederationArkady I. Gromovik
Voronezh State University
Email: agrom.ps@mail.ru
ORCID iD: 0000-0002-2340-6404
Candidate of Biological Sciences, Associate Professor, Department of Ecology and Land Resources
1 Universitetskaya sq., Voronezh, 394018, Russian FederationTatyana A. Devyatova
Voronezh State University
Email: devyatova.eco@gmail.com
ORCID iD: 0000-0002-4756-9005
Doctor of Biological Sciences, Professor, Head. Department of Ecology and Land Resources
1 Universitetskaya sq., Voronezh, 394018, Russian FederationReferences
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