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

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Degradation of soils around the Kattakurgan Reservoir and its impact on soil properties Jabbarov, Zafarjon; Abdullaev, Shokhrukh; Rakhmatullaeva, Guljakhon; Abdurakhmonov, Nodirjon; Ismonov, Abduvaxob; Kalandarov, Nazimkhon; Yuldashev, Iskandar; Pulatov, Muxiddin; Mamajanova, Uktamxon; Djabborov, Shavkat
Journal of Degraded and Mining Lands Management Vol. 12 No. 5 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.125.8957

Abstract

This study investigated hydromorphic processes in soils surrounding the Kattakurgan Reservoir and examines the influence of groundwater on their physicochemical properties. Soil samples were analyzed for particle-size distribution, pH, electrical conductivity (EC), total organic carbon (TOC), and major ion content. Particle-size analysis indicated an increase in the proportion of physical clay from 41.2% to 48.3%, confirming a pronounced hydromorphic impact on soil structure in areas where the groundwater table was within the 85-155 cm range. ANOVA and regression analyses revealed strong positive correlations between sand-silt (? = 0.922) and sande-clay (? = 0.391) fractions, whereas TOC and EC exhibited statistically significant negative relationships with sand content. The results further indicated that physical clay content was substantially higher at locations near the reservoir, where hydromorphic conditions were more intense, reflecting the compaction of soil structure associated with elevated groundwater levels. Overall, these findings highlight the critical role of groundwater fluctuations in driving structural changes in soils, with direct implications for their physicochemical properties.  
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 Abdullaev, Shokhrukh Abdurakhmanova, Mukaddas Allaberdiev, Rustamjon Djabborov, Shavkat Ismonov, Abduvaxob Jabbarov, Zafarjon Kalandarov, Nazimkhon Mamajanova, Uktamxon Nomozov, Urol Pulatov, Muxiddin Rakhmatullaeva, Guljakhon Sherimbetov, Vafabay Yagmurova, Dilafruza Yuldashev, Iskandar Zafarjonov, Nurmukhammad Ziyadov, Shuqurillo