Secondary Salinization of Soils in Russia

Savin, I. Yu.; Avetyan, S. A.; Шишконакова, Е. А.

doi:10.1088/1755-1315/690/1/012024

Cited by 5 publications

(1 citation statement)

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“…В гумидных и субгумидных северных и северозападных регионах страны преобладающая водная эрозия нередко сочетается с переувлажнением и опасностью заболачивания (Разумов и др., 2018). В субаридных и аридных областях, в свою очередь, на фоне дефляции значительную роль играют осолонцевание и засоление почв (Savin et al, 2021), что в совокупности с дефицитом влаги нередко приводит к опустыниванию и, возможно, даже к бедлендизации территорий, используемых в сельском хозяйстве (Панкова, Горохова, 2020).…”

Section: Cartographic Interpretation Of Chemical and Radiation Contam...unclassified

Cartographic interpretation of chemical and radiation contamination of Russian soils

Avetyan

Savitskaya

Savin

et al. 2023

DSB

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At the end of the 20th century, a geoinformation database on soil degradation in Russia, relied on the soil map of Russia at a scale of 1 : 5 million, was developed under the leadership of V.S. Stolbovoy. As part of the development of this problem and in the course of obtaining new information on soil degradation, an attempt was made to refine and supplement this database, that relies on the soil map of the Russian Federation 1 : 2.5 million scale. Soil degradation resulted from the impact of various types of pollution was taken into account, including industrial emissions, leakage of oil products, excessive application of pesticides, the impact of vehicles and radiation pollution. Each soil polygon of the soil map exposed to the pollution was characterized by the degree and area of pollution in accordance with the developed scales. The results of the analysis were used to construct cartograms illustrating the spatial distribution of chemical and radiation degradation of the country soils. According to the data obtained, in the zone of pollution derived from industrial enterprises and oil pollution, 20% of the soil-geographic polygons of the map are characterized by a strong degree of pollution, and 30% and 50% – by weak and medium, respectively. Agricultural pollution due to excessive use of plant protection products in Russia does not exceed 10% of the area of polygons and is characterized by a low degree. About 10% of the soil polygons of the basic soil map are heavily contaminated with radioactive contamination, while 40% and 50% of the polygons are moderately and weakly contaminated, respectively. Pollution from vehicles is weak and generally has low level. At the same time, megacities and highways with heavy traffic are distinguished by relatively high level of pollution.

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Section: Cartographic Interpretation Of Chemical and Radiation Contam...unclassified

Cartographic interpretation of chemical and radiation contamination of Russian soils

Avetyan

Savitskaya

Savin

et al. 2023

DSB

View full text Add to dashboard Cite

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Diversity analysis of soil microbial population abundance before and after planting JunCao “Oasis No. 1” in saline-alkali soil

2021

Preprint

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In order to explore the difference of soil microbial population structure and abundance before and after planting JunCao “Oasis No. 1” in saline-alkali soil, verify the improvement effect of JunCao “Oasis No. 1” on microbial population structure and abundance in saline-alkali soil. Samples were collected from the blank saline area with and without JunCao “Oasis NO.1” and no plant growth on the surface, respectively, as Experimental group soil samples (S.Y.1-S.Y.8) and Blank group soil samples (K.B.1-K.B.8).16sDNA high-throughput sequencing technology was used for sequencing analysis respectively, and the diversity of microbial population abundance between them was compared and analyzed.The results showed that the diversity of microbial population abundance in the experimental group was significantly higher than that in the blank group, and the diversity of microbial population abundance in the experimental group was significantly different from that in the blank group, indicating that the composition of microbial population in the experimental group was significantly different from that in the blank group. In the OTU cluster analysis, the number of OTU clusters in the Experimental group soil samples (S.Y.1-S.Y.8) was significantly higher than that in the Blank group soil samples (K.B.1-K.B.8). In the sample complexity analysis of α-diversity analysis, the richness and diversity of microbial population in soil samples of Experimental group (S.Y.1-S.Y.8) were significantly higher than that in soil samples of Blank group (K.B.1-K.B.8), which was clearly reflected in the Species accumulation boxplot and Graph of species diversity. In the β-diversity analysis, PcoA, PCA and NMDS analysis methods were used to analyze the difference of microbial population diversity between Experimental soil samples (S.Y.1-S.Y.8) and Blank soil samples (K.B.1-K.B.8). The results showed that the diversity of microbial population in Experimental soil sample (S.Y.1-S.Y.8) was significantly different from that in Blank soil sample (K.B.1-K.B.8). In this paper, 16sDNA high-throughput sequencing technology was used to analyze the diversity of microbial population abundance between Blank soil samples and Experimental soil samples, and it was proved that JunCao “Oasis No. 1” had good saline-alkali soil improvement characteristics. It can effectively increase the abundance of microbial population in saline-alkali soil, so as to restore the microbial population ecosystem in saline-alkali soil, which has important application value in soil saline-alkali control.

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