干旱区生态环境知识资源中心(Arid): Textural features of saline-sodic soils affected by Urmia Lake in the Northwest of Iran

Arid

DOI	10.1016/j.geoderma.2021.115007
	Textural features of saline-sodic soils affected by Urmia Lake in the Northwest of Iran
	Jafarpoor, Fatemeh; Manafi, Shahram; Poch, Rosa M.
通讯作者	Manafi, S (corresponding author), Urmia Univ, Dept Soil Sci, Agr Fac, 11 Km Sero Rd, Orumiyeh, Western Azerbai, Iran.
来源期刊	GEODERMA
ISSN	0016-7061
EISSN	1872-6259
出版年	2021
卷号	392
英文摘要	The increasing regression of Urmia Lake in the last 30 years has brought about the salinization and sodification of arid soils from the shoreline, which has aggravated land degradation in this area. The objective of this work was to assess the changes in the soils brought about by progressive and fast salinization of the region, and to determine the present- or past character of several textural pedofeatures. We studied the micmmorphic, mineralogical and physico-chemical properties of four profiles of saline-sodic soils in the west of Urmia Lake. Most of voids in the studied horizons were mainly vesicles due to structure collapse, besides planes and channels, and their b-fabric were mainly crystallitic micritic and granostriated due to argilloturbation. The main pedofeatures were illuvial clay coatings and also their fragments in the groundmass, clay and silt coatings, calcite accumulations as nodules, infillings and coatings and redoximorphic accumulations as nodules and coatings. Owing to the arid climate and high amounts of calcium carbonate and soluble salts, the illuviation of pure clay in natric horizons probably took place during a wetter past climate during the lower Quaternary. Additionally, based on high values of exchangeable sodium, ESP and SAR, we believe that the high values of exchangeable sodium are the responsible for the structural collapse, dispersion and translocation of fine material (clay and silt) at varying distances within the soil profile. Alkalinisation is likely to proceed from evaporation of the supersaturated waters of Urmia Lake through carbonate precipitation and smectite formation, increasing ESP and changing previous argillic horizons to natric horizons. Increase of organic matter through the application or organic amendments seem to be the best strategy for their reclamation.
英文关键词	Textural features Micromorphology Natric horizon Saline-sodic soils Semiarid area Structure collapse
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000627883100009
WOS关键词	ARGILLIC HORIZON ; MINERALOGY ; CARBONATE ; GENESIS ; VALLEY
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368696
作者单位	[Jafarpoor, Fatemeh; Manafi, Shahram] Urmia Univ, Dept Soil Sci, Agr Fac, 11 Km Sero Rd, Orumiyeh, Western Azerbai, Iran; [Poch, Rosa M.] Univ Lleida, Dept Environm & Soil Sci, Catalonia, Spain
推荐引用方式 GB/T 7714	Jafarpoor, Fatemeh,Manafi, Shahram,Poch, Rosa M.. Textural features of saline-sodic soils affected by Urmia Lake in the Northwest of Iran[J],2021,392.
APA	Jafarpoor, Fatemeh,Manafi, Shahram,&Poch, Rosa M..(2021).Textural features of saline-sodic soils affected by Urmia Lake in the Northwest of Iran.GEODERMA,392.
MLA	Jafarpoor, Fatemeh,et al."Textural features of saline-sodic soils affected by Urmia Lake in the Northwest of Iran".GEODERMA 392(2021).