Архив метки: arid soils

ASSESSMENT OF ORGANIC CARBON STOCKS IN ARID DEGRADED SOILS OF SOUTHERN RUSSIA

Arid Ecosystems

Fedotova A.V., Yemelyanenko V.I. ASSESSMENT OF ORGANIC CARBON STOCKS IN ARID DEGRADED SOILS OF SOUTHERN RUSSIA // Arid Ecosystems. 2025. Vol. 31. № 2 (103). P. 61-68. | PDF

As of now, carbon management of dry regions receives little research attention. Therefore, in this article we discuss the results of assessing and comparing organic carbon reserves in arid soils of varying degrees of degradation in the arid zone of the southern part of Russia (Astrakhan Region). Based on the data analysis of 263 soil profiles, we established that organic carbon reserves decrease as the soil degradation intensifies. We discovered a significant spatial variability both between and within biogeocenoses. Our results showed that automorphic soils have a lower ability to sequester organic carbon, compared to hydromorphic soils. In automorphic ones, carbon reserves are 9.37±1.02 t ha-1, which is 4 times lower than in hydromorphic ones – 37.01±2.34 t ha-1. Additionally, we discovered that in the complete absence of vegetation cover organic carbon reserves in the hydromorphic coastal solonchaks of the crustal solonchaks with a severe degradation are at the same level with the reserves in automorphic zonal soils.

Funding. The work was carried out as part of the state assignment No. FNFE-2025-0012of the Federal Scientific Center for Agroecology, Complex Reclamation and Protective Forestry of the Russian Academy of Sciences.

Keywords: carbon, arid soils, desertification, degradation, automorphic soils, hydromorphic soils.

DOI: 10.24412/1993-3916-2025-2-61-68

EDN: JOPMDY

ABOUT THE REGULARITIES OF THE DEVELOPMENT OF THE SOIL COVER OF THE PODGORNY-PRIMORYE PLAINS OF THE WESTERN CASPIAN SEA

Arid Ecosystems

UDC 631.4

Kotenko M.E., Asgerova D.B., Galimova U.M. ABOUT THE REGULARITIES OF THE DEVELOPMENT OF THE SOIL COVER OF THE PODGORNY-PRIMORYE PLAINS OF THE WESTERN CASPIAN SEA // Arid Ecosystems. 2022. Vol. 28. № 4 (93). P. 55-60. | PDF

The Podgorny-Primorye plains are widespread in arid regions of the world. They are forming in the coastal strip, where the mountains come close to the seashore. Unlike other plains, they consist of three specific elements of the foothill plain: piedmont plain, coastal plain, or coast, and the continental part of the region. In these landscape components, soils and vegetation cover differ significantly, changing the structure of the soil cover.

Keywords: seashore, arid soils, piedmont plain, desertification, salt migration, soil salinization, indicator.

DOI: 10.24412/1993-3916-2022-4-55-60

EDN: XUWQOR

SOILS OF ARID REGIONS OF SOUTHERN RUSSIA IN THE BASIC CLASSIFICATION OF SOILS OF THE WORLD

Arid Ecosystems

UDC 631.48

Zalibekov Z.G., Mamaev S.A., Biarslanov A.B., Kurbanismailova A.S. SOILS OF ARID REGIONS OF SOUTHERN RUSSIA IN THE BASIC CLASSIFICATION OF SOILS OF THE WORLD // Arid ecosystems. 2022. V.28. № 1 (90). P. 42-52. | PDF

Received April 24, 2020. After revision October 14, 2020. Accepted August 16, 2021.

Soil cartographic studies and preparation of soil maps are carried out using classification and diagnostics of soils, as well as various methodological approaches. The most acceptable in modern conditions are «Classification and diagnostics of soils of Russia» (2004), the main difference of which is the use of the principles of substantive genetic classification developed by V.M. Friedland. To further develop this classification, an attempt has been made to determine the classification position and properties of arid soils subjected to desertification, aridization. An important criterion determining the acceptability of the new approach is the allocation of supertype subdivisions (trunks – synlithogenic, postlithogenic organomineral soils) characteristic of highly degraded soils in the foci of desertification. Desertification, as a natural-anthropogenic process, leads to the loss of humus horizons and the emergence of a soil-forming geological rock on the surface. At the same time, the properties of soils at the highest supertype level change with the transition of postlitogenic to synlitogenic organomineral soils.

Taking into account the global nature of the manifestation of desertification, the control of changes is a prerequisite for determining the place of arid soils of the southern regions of Russia in the basic classification of soils of the world. The proposed article provides a theoretical justification for the classification differences allocated to supplement with diagnostics, a nomenclature of properties with an appropriate sequence.

Keywords: basic classification, substantive genetic classification, arid soils, synlithogenic variety, postlithogenic variety, halomorphic desertification, ferrallite formations, erosion, salinization, dehumification.

Financing. The work was carried out within the framework of the State Assignment of the Institute of Geology of the Dagestan Federal Research Center of the Russian Academy of Sciences “Landscape-geochemical zoning of the Caspian lowland”, Section 1, No. AAA-A117-117021310199-9 “Development of methodological foundations for studying the humus state and soil salinization for the purpose of landscape-geochemical zoning of arid territories”, Topic 3, No. AAAAA-A17-117021310203-3 “Ecological and geochemical features of groundwater of the North-Eastern Caucasus (Dagestan). Natural and anthropogenic pollution factors”.

DOI: 10.24412/1993-3916-2022-1-42-52