Vegetation Restoration on Reclaimed Soils on the Peri-Yergenian Plain (Republic of Kalmykia)

Novikova, N. M.; Konyushkova, M. V.; Ulanova, S. S.

doi:10.1134/s207909611803006x

Cited by 8 publications

(1 citation statement)

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“…The proportion of Solonetzes may vary from being a large percentage to almost total domination. Solonetzes differ sharply from zonal soils (Kastanozems, Cambisols, and Calcicols) in physicochemical (Borisov & Alekseev, 2020) and biological properties (Chernov et al, 2018), as well as in the structure of herbaceous plant communities (Novikova et al, 2018). Solonetzes often displace Kastanozems on 1-2 m plots, making a complex soil cover structure (Lebedeva & Konyushkova, 2011), and this fact should be considered in studies of grazing effect.…”

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confidence: 99%

Influence of grazing on the structure and biological activity of dry steppe soils of the southern Russian Plain

et al. 2021

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A comparative analysis of physicochemical and biological properties of Kastanozems and Solonetzes, the two most common soil types in the Caspian region of the post-Soviet territory was carried out. The carbonate, salt, Corg, mineral N (NH 4 + and NO 3 À ) contents, microbial biomass (measured by ds-DNA and phospholipids), and activity of 17 hydrolases involved in the C, N, P, and S cycles were measured along the grazing attenuation gradient near a typical sheep farm with year-round grazing. Heavy grazing increases the number of Solonetz areas, they occupy up to 70% of the soil cover. Further away from the farm the areas decrease, and Kastanozems dominate there instead.Both in Kastanozems and Solonetzes, heavy grazing leads to soil salinisation, accumulation of carbonates and nitrates, decrease in ammonia and Corg content, microbial biomass, and enzymatic activity. At moderate grazing, a significant increase in microbial biomass and enzymatic activity throughout the soil profile, particularly in the 0-10 cm layer was found; at light grazing, it was observed mainly in deeper soil layers, not in the upper 0-10 cm. The microbial biomass and enzymatic activity of soils did not directly follow grazing load and was maximal at moderate grazing, where negative effect of reducing phytomass is compensated by large inputs of animal excreta, stimulating development of soil microbial community. Compared to Kastanozems, Solonetzes were more resistant to pasture load, and under heavy grazing, their properties changed to a lesser extent.

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Section: Introductionmentioning

confidence: 99%

Influence of grazing on the structure and biological activity of dry steppe soils of the southern Russian Plain

et al. 2021

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Geobotanical indication of flooding and salinization of lands the Volga region and Western Kazakhstan

Трофимов

Косолапов

Трофимова

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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In order to study the spatial distribution of biological and ecological patterns on the territory of the Volga region and Western Kazakhstan, geobotanical indication of flooding and salinization of the lands these regions was carried out. Geobotanical indication is used in the study, assessment, mapping and monitoring of territorial complexes and their components and is based on the analysis of the relationships of the geographical envelope as a whole. The article is the result of many years of interdisciplinary research. It is based both on the data obtained by the authors as a result of agro-landscape and ecological zoning and in the course of field expedition research, and on the analysis of long-term series of statistical information and literature sources. Intensive economic activity that requires the use of large amounts water resources, against the background of modern climate changes, leads to waterlogging in large areas. The weakening or termination of economic activity, the decrease in the volume of water resources used under certain conditions leads to the spread of land salinization. Flooding and sal-inization of arid lands near reservoirs, channels, reclamation facilities, functioning and abandoned irrigation fields, etc. occupy significant areas and are of great importance as environmental problems in the Volga region and Western Kazakhstan. The most dynamic and fast-responding biotic component of ecosystems to the occurrence of flooding and salinization is vegetation.

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Formation of Forest Biogeocenoses on Disturbed Lands of the Northern Caspian Region

Sizemskaya

Еlekesheva

Сапанов

2021

Biol Bull Russ Acad Sci

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Vegetation Restoration on Reclaimed Soils on the Peri-Yergenian Plain (Republic of Kalmykia)

Cited by 8 publications

References 1 publication

Influence of grazing on the structure and biological activity of dry steppe soils of the southern Russian Plain

Influence of grazing on the structure and biological activity of dry steppe soils of the southern Russian Plain

Geobotanical indication of flooding and salinization of lands the Volga region and Western Kazakhstan

Formation of Forest Biogeocenoses on Disturbed Lands of the Northern Caspian Region

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