Mechanism of Soil Sodification at the Local Scale in Songnen Plain, Northeast China, as Affected by Shallow Groundwater Table
文献类型：期刊论文
| 作者 | 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
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| 刊名 | ARID LAND RESEARCH AND MANAGEMENT
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| 出版日期 | 2011 |
| 卷号 | 25期号:3页码:234-256 |
| 关键词 | ocritical deptho of groundwater level Halaquepts local scale Mollisols water and salt translocation |
| ISSN号 | 1532-4982 |
| 通讯作者 | Luo J. M. |
| 合作状况 | 国内 |
| 英文摘要 | Soil 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. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences ; Soil Science |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Agriculture |
| 关键词[WOS] | SALINITY ; FLOW |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000290401900003 |
| 公开日期 | 2013-05-28 |
| 源URL | [http://192.168.143.20:8080/handle/131551/5342]  |
| 专题 | 成都山地灾害与环境研究所_山区发展研究中心 |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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