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Mechanism of Soil Sodification at the Local Scale in Songnen Plain, Northeast China, as Affected by Shallow Groundwater Table
Luo, J. M.1,2; Yang, F.1; Wang, Y. J.2; Ya, Y. J.2; Deng, W.3; Zhang, X. P.1; Liu, Z.4
Corresponding AuthorLuo J. M.
2011
Source PublicationARID LAND RESEARCH AND MANAGEMENT
ISSN1532-4982
Volume25Issue:3Pages:234-256
SubtypeArticle
AbstractSoil sodification in Northeast China is controlled by many other factors besides groundwater level. This research aims to explore the mechanism of sodium buildup in sodic soil based on in-situ observation and laboratory analysis. Results indicate that water and sodium redistribution process on the soil surface at local scale was an additional factor leading to the rapid soil sodification development in Songnen Plain in recent decades. A field observation was conducted in a 35x35m2 area. Mollisols were distributed in depressions and free of natric horizon, while Halaquepts were found on micro slopes and high flats. A natric horizon was found at a depth of 15-30cm in high flats, with an exchangeable sodium percent (ESP) value of 70. Fluctuation of groundwater table in the freezing period was related, to some extent, to the formation and development of frozen soil. During the freezing period, groundwater table was gradually lowered as a result of the groundwater moving into the frozen layer, leading to higher moisture content therein. During the thawing period, soil moisture content in the surface layer of Mollisols showed a significant enrichment (p0.05) from 0.27 to 0.69m3m-3(over-saturated). Salt in the surface of Halaquepts enriched quickly, especially in the micro slope, by about 80%. In comparison, insignificant change was observed in Mollisols. Sodic soil should be leveled fully and adequate drainage should be utilized before farming in order to prevent soil sodification. Blocking the capillary pore channels between topsoil and subsoil by plowing before freezing season would help soil desodification in high-latitude arid and semiarid regions.
KeywordOcritical Deptho Of Groundwater Level Halaquepts Local Scale Mollisols Water And Salt Translocation
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1080/15324982.2011.565856
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Agriculture
Indexed BySCI
WOS KeywordSALINITY ; FLOW
Language英语
Quartile4区
WOS SubjectEnvironmental Sciences ; Soil Science
WOS IDWOS:000290401900003
Funding OrganizationChinese Academy of Science(KZCX2-YW-Q06-2-3) ; National Natural Science Foundation of China(40871259 ; Program for young teachers' scientific research in QiqiharUniversity(2010 K-M26) ; 41071022)
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5342
Collection山区发展研究中心
Affiliation1.Chinese Acad Sci, NE Inst Geog & Agroecol, Changchun 130012, Peoples R China
2.Qiqihar Univ, Dept Phys & Geog, Qiqihar, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Peoples R China
4.Dynam Solut LLC, Knoxville, TN USA
Recommended Citation
GB/T 7714
Luo, J. M.,Yang, F.,Wang, Y. J.,et al. Mechanism of Soil Sodification at the Local Scale in Songnen Plain, Northeast China, as Affected by Shallow Groundwater Table[J]. ARID LAND RESEARCH AND MANAGEMENT,2011,25(3):234-256.
APA Luo, J. M..,Yang, F..,Wang, Y. J..,Ya, Y. J..,Deng, W..,...&Liu, Z..(2011).Mechanism of Soil Sodification at the Local Scale in Songnen Plain, Northeast China, as Affected by Shallow Groundwater Table.ARID LAND RESEARCH AND MANAGEMENT,25(3),234-256.
MLA Luo, J. M.,et al."Mechanism of Soil Sodification at the Local Scale in Songnen Plain, Northeast China, as Affected by Shallow Groundwater Table".ARID LAND RESEARCH AND MANAGEMENT 25.3(2011):234-256.
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