干旱区生态环境知识资源中心(Arid): Biogeochemical State of Salinized Irrigated Soils of Central Fergana (Uzbekistan, Central Asia)

Arid

DOI	10.3390/app13106188
	Biogeochemical State of Salinized Irrigated Soils of Central Fergana (Uzbekistan, Central Asia)
	Turdaliev, Avazbek; Askarov, Kamoliddin; Abakumov, Evgeny; Makhkamov, Elyorbek; Rahmatullayev, Gayratbek; Mamajonov, Gaybullo; Akhmadjonov, Avazbek; Axunov, Akmal
通讯作者	Abakumov, E
来源期刊	APPLIED SCIENCES-BASEL
EISSN	2076-3417
出版年	2023
卷号	13 期号:10
英文摘要	The Central Fergana region is one of the overpopulated regions of Central Asia, which includes parts of Uzbekistan, Kyrgyzstan, and Tajikistan. Here, in the dry subtropical climate are the most ancient, irrigated oases used for agriculture. Fergana valley is the key to the food security of the region as a whole. The article provides information on diversity and chemical composition of newly developed, new and old-irrigated Calcisols soils formed on alluvial and alluvial-prolluvial sediments. Soils are poor with organic matter (0.37-0.81% of organic carbon), with high nitrogen content (C/N ratio is 4.92-5.79), and with neutral (7.01-7.30) pH values. Data on the content and the ratio of the key components of soil salinity (Na2CO3, Ca(HCO3)(2), CaSO4, MgSO4, Na2SO4, NaCl) and the bulk content of salts in soils under different irrigation regimes are presented. It was shown that Na2CO3 concentration is minimal in all the soils, and this salt presents only in ground waters (0.100-0.135 g L-1). Newly irrigated soils are characterized by higher content of salts than old irrigated soils. All the soils investigated are characterized by increasing salinity rate within the soil depth with the highest content of all salts in ground waters. This chloride-sulfate type of salinization is most pronounced in all the soils studied. Gypsum content in agricultural soils results in limited water and nutrient retention and the potential for dissolution, primarily in response to irrigation. The soils of the Fergana Valley are also subjected to polychemical pollution, so the content of trace elements in them was studied. Irrigated meadow-takyr and meadow-saz soils show low levels of environmental hazard, but irrigation results in accumulation of such trace elements as nickel (30 mg kg(-1)), arsenic (11.75 mg kg(-1)), bromine (5.00 mg kg(-1)), antimony (1.48 mg kg(-1)), cesium (5.00 mg kg(-1)), and hafnium (2.97 mg kg(-1)). Irrigation also affects the soil texture and thus increases fine particle percentages in the superficial soil horizons. Thus, the complex chemical characteristics of salinized soils are presented for numerous irrigated landscapes of the region.
英文关键词	Uzbekistan agrosoils salinity irrigation
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000995544400001
WOS关键词	AREAS
WOS类目	Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395369
推荐引用方式 GB/T 7714	Turdaliev, Avazbek,Askarov, Kamoliddin,Abakumov, Evgeny,et al. Biogeochemical State of Salinized Irrigated Soils of Central Fergana (Uzbekistan, Central Asia)[J],2023,13(10).
APA	Turdaliev, Avazbek.,Askarov, Kamoliddin.,Abakumov, Evgeny.,Makhkamov, Elyorbek.,Rahmatullayev, Gayratbek.,...&Axunov, Akmal.(2023).Biogeochemical State of Salinized Irrigated Soils of Central Fergana (Uzbekistan, Central Asia).APPLIED SCIENCES-BASEL,13(10).
MLA	Turdaliev, Avazbek,et al."Biogeochemical State of Salinized Irrigated Soils of Central Fergana (Uzbekistan, Central Asia)".APPLIED SCIENCES-BASEL 13.10(2023).