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All Journal Journal of Degraded and Mining Lands Management
Nomozov, Urol
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Evaluation of carbonate accumulation, inorganic carbon content, and soil property changes in newly developed soils of degraded landscapes Jabbarov, Zafarjon; Abdrakhmanov , Tokhtasin; Abdullaev, Shokhrukh; Makhammadiev, Samad; Nomozov, Urol; Rakhmatullaeva, Guljakhon; Kovácik, Peter
Journal of Degraded and Mining Lands Management Vol. 12 No. 4 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.124.7993

Abstract

The article examines the impact of inorganic carbon content on the soil pH environment, humus content, and the population of humus-decomposing microorganisms in newly formed soils on the dried bottom of the Aral Sea. The studies were conducted in 3 regions. The highest inorganic carbon content was 24.41% in the soils of Region III, while the lowest content was 9.18% in the soils of Region I. The inorganic carbon content in the soils affected the pH environment. In Region III, where inorganic carbon was more accumulated, the pH environment reached up to 8.6, indicating a higher alkalinity. In contrast, the soils of Region I, with lower inorganic carbon, had a pH of 7.1. The humus content also varied depending on the inorganic carbon content. In Region III, the humus content was 0.12%, while in Region I, it was 0.80%. The inorganic carbon content also influenced the number of humus-decomposing microorganisms. The results indicated that as the inorganic carbon content increased, the number of humus-decomposing microorganisms decreased. The results of the statistical analysis (LDA, PCA, Correlation, Regression, General statistics) are positive. Specifically, the F statistic is 657.5 (p<0.001), indicating that the analysis results are highly reliable and statistically significant. The study shows that inorganic carbon content in Aral Sea soils affects pH, humus levels, and humus-decomposing microorganisms, with higher carbon leading to higher pH and fewer microorganisms. Statistical analysis confirms reliability.
Arsenic distribution and phosphorus dynamics in saline soils of the dried Aral Sea bed: Implications for land degradation and soil management Allaberdiev, Rustamjon; Jabbarov, Zafarjon; Abdurakhmonov, Nodirjon; Sherimbetov, Vafabay; Ziyadov, Shuqurillo; Abdurakhmanova, Mukaddas; Nomozov, Urol; Yagmurova, Dilafruza; Zafarjonov, Nurmukhammad; Abdullaev, Shokhrukh
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10625

Abstract

Arsenic (As) contamination in soils is a major environmental concern, particularly in saline and arid regions. The dried Aral Sea represents a unique environment where newly formed soils exhibit complex geochemical behavior. However, the interaction between arsenic and phosphorus (P) in these soils remains insufficiently understood. This study aimed to assess the concentration, spatial variability, and geochemical behavior of arsenic and its interaction with phosphorus in soils of the eastern part of the dried Aral Sea bed. A total of 25 soil samples were collected and analyzed for key physicochemical properties, including electrical conductivity (EC), available phosphorus (P?O?), cation exchange capacity (CEC), and arsenic content. Statistical analyses, including descriptive statistics and ANOVA, were applied. The results showed high spatial variability of soil properties. EC ranged from 1.75 to 13.70 dS/m (mean 7.05), indicating saline conditions. Arsenic concentrations varied from 14.90 to 181.80 (mean 100.99), while available phosphorus ranged from 4.40 to 23.99 mg/kg. ANOVA confirmed highly significant differences among all parameters (p < 0.0001). A strong interaction between arsenic and phosphorus was identified, with increased arsenic levels associated with reduced phosphorus availability due to competitive adsorption. These findings indicate that soils of the dried Aral Sea bed are highly heterogeneous and environmentally unstable. The results highlight the importance of effective soil management strategies to mitigate arsenic toxicity and improve nutrient availability in saline environments.
Co-Authors Abdrakhmanov , Tokhtasin Abdullaev, Shokhrukh Abdurakhmanova, Mukaddas Abdurakhmonov, Nodirjon Allaberdiev, Rustamjon Jabbarov, Zafarjon Kovácik, Peter Makhammadiev, Samad Rakhmatullaeva, Guljakhon Sherimbetov, Vafabay Yagmurova, Dilafruza Zafarjonov, Nurmukhammad Ziyadov, Shuqurillo