Spatial and In-Depth Distribution of Soil Salinity and Heavy Metals (Pb, Zn, Cd, Ni, Cu) in Arable Irrigated Soils in Southern Kazakhstan

Most irrigated lands in the Republic of Kazakhstan are in its southern part, in the large deltas and ancient alluvial plains in the basins of the rivers Syr Darya and Ili. The combination of climatic features and anthropogenic pressures leads to increased salinity and contamination of cultivated soi...

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Veröffentlicht in:Agronomy Jg. 12; H. 5; S. 1207
Hauptverfasser: Suska-Malawska, Małgorzata, Vyrakhamanova, Assem, Ibraeva, Marya, Poshanov, Maksat, Sulwiński, Marcin, Toderich, Kristina, Mętrak, Monika
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Basel MDPI AG 17.05.2022
Schlagworte:
Agricultural land
Agricultural production
Agriculture
Alluvial basins
Alluvial plains
Anions
Anthropogenic factors
Arable land
arid regions
arid regions; Kazakhstan; irrigated soils; soil salinity; heavy metals
Basins
Cadmium
Canals
Cations
Chemical elements
Contamination
Copper
Crop production
Cultivation
Deltas
Deserts
Heavy metals
Irrigated lands
irrigated soils
Irrigation
Irrigation water
Kazakhstan
Lead
Massifs
Metal concentrations
Nickel
Precipitation
Rivers
S
Salinity
Salinity effects
Salinization
Salts
Sediments
Soil contamination
Soil depth
Soil pollution
Soil profiles
Soil properties
Soil salinity
Soil types
Vegetation
Zinc
Central Asia
Kazakhstan
Turkistan
ISSN:2073-4395, 2073-4395
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Zusammenfassung:Most irrigated lands in the Republic of Kazakhstan are in its southern part, in the large deltas and ancient alluvial plains in the basins of the rivers Syr Darya and Ili. The combination of climatic features and anthropogenic pressures leads to increased salinity and contamination of cultivated soils in this region, resulting in a qualitative and quantitative decline in crop production. The study’s primary goal was to assess soil secondary salinity and selected heavy metals (Pb, Zn, Cd, Ni and Cu) contamination in irrigated arable soils. To identify the potential source of soil pollution, we compared the concentration of salt and heavy metals (both total and mobile forms) in different soil types in three depths of soil profiles obtained from irrigated cultivated and non-cultivated (abounded) territory in the Shauldara massif in the southern part of Kazakhstan. All studied soils are prone to secondary salinization with either a medium or high content of sum of salts with domination by Na+ among cations and by SO42− among anions. The soil contamination with heavy metals was low, and, in most cases, except for cadmium, it was below the limits developed for arable soils in most countries. Soil contamination with cadmium results from contamination of the water used for irrigation of farmland.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:2073-4395
2073-4395
DOI:10.3390/agronomy12051207