| Salt dynamics in soil profiles during long-term evaporation under different groundwater conditions | |
| 其他题名 | Variation of Antioxidant System in Pinus armandii under Elevated O3 in an Entire Growth Season.pdf |
| Liu, G. M.1; Yang, J. S.1; He, L. D.1; Lv, Z. Z.1; Shao, H. B.2; Yu, S. P.1; Liu, GM (reprint author), Chinese Acad Sci, State Key Lab Soil & Sustainable Agr, Inst Soil Sci, Nanjing 210008, Jiangsu, Peoples R China. gmliuissas@126.com; jsyang@issas.ac.cn | |
| 发表期刊 | PLANT BIOSYSTEMS
 |
| ISSN | 1126-3504 |
| 2013-12-01 | |
| 卷号 | 147期号:4页码:1211-1218 |
| 关键词 | Soil Salinization Salt Dynamics Evaporation Groundwater Depth Groundwater Salinity |
| 产权排序 | [Liu, G. M.; Yang, J. S.; He, L. D.; Lv, Z. Z.; Yu, S. P.] Chinese Acad Sci, State Key Lab Soil & Sustainable Agr, Inst Soil Sci, Nanjing 210008, Jiangsu, Peoples R China; [Shao, H. B.] Chinese Acad Sci, Key Lab Coastal Biol & Biol Resources Utilizat, Yantai Inst Coastal Zone Res YIC, Yantai 264003, Peoples R China |
| 英文摘要 | To study salt dynamics in soil profiles under different groundwater conditions, a 3-year indoor experiment was carried out under conditions of open-air evaporation. Silt loam soil was treated under three groundwater table depths (0.85, 1.05, and 1.55m) combined with three groundwater salinities: 0.40dSm(-1) (2gl(-1)), 0.80dSm(-1) (4gl(-1)), and 1.60dSm(-1) (8gl(-1)). A total of nine soil columns (0.14m internal diameter) were used to simulate different combinations of groundwater depths and salinities. The results obtained showed that salt first accumulated at the bottom of the soil column, and only when soil salinity in this layer had remained relatively stable with time, salt began to accumulate in the adjacent upper soil layers. When all subsoil layers had reached dynamic salinity equilibrium, electrical conductivity (EC) of soils in the surface layer began to increase drastically. With increasing salt accumulation in the surface soil, EC of the subsoil began to rise tardily. The further up the soil layer, the earlier EC started to increase, although the redistribution of salts in the soil profile tended to be homogenous. Groundwater depth did not significantly change subsoil EC values at the same depth; however, it distinctly affected the time needed for the subsoil to reach dynamic salinity equilibrium. Groundwater salinity, on the other hand, did not significantly alter the time point at which soil salinity at the same depth began to increase rapidly or the time period needed to reach dynamic salinity equilibrium. This study explored salt transport processes in the soil profile through a long-term experiment, enabling us to reveal some general laws governing salt dynamics that will be very important to understand the mechanism of soil salinization. The results could be further used to set up strategies to prevent salinization or to improve salt-affected soils.; To study salt dynamics in soil profiles under different groundwater conditions, a 3-year indoor experiment was carried out under conditions of open-air evaporation. Silt loam soil was treated under three groundwater table depths (0.85, 1.05, and 1.55m) combined with three groundwater salinities: 0.40dSm(-1) (2gl(-1)), 0.80dSm(-1) (4gl(-1)), and 1.60dSm(-1) (8gl(-1)). A total of nine soil columns (0.14m internal diameter) were used to simulate different combinations of groundwater depths and salinities. The results obtained showed that salt first accumulated at the bottom of the soil column, and only when soil salinity in this layer had remained relatively stable with time, salt began to accumulate in the adjacent upper soil layers. When all subsoil layers had reached dynamic salinity equilibrium, electrical conductivity (EC) of soils in the surface layer began to increase drastically. With increasing salt accumulation in the surface soil, EC of the subsoil began to rise tardily. The further up the soil layer, the earlier EC started to increase, although the redistribution of salts in the soil profile tended to be homogenous. Groundwater depth did not significantly change subsoil EC values at the same depth; however, it distinctly affected the time needed for the subsoil to reach dynamic salinity equilibrium. Groundwater salinity, on the other hand, did not significantly alter the time point at which soil salinity at the same depth began to increase rapidly or the time period needed to reach dynamic salinity equilibrium. This study explored salt transport processes in the soil profile through a long-term experiment, enabling us to reveal some general laws governing salt dynamics that will be very important to understand the mechanism of soil salinization. The results could be further used to set up strategies to prevent salinization or to improve salt-affected soils. |
| 文章类型 | Article |
| 资助机构 | Public Welfare Project of Marine Science Research [201105020]; National Natural Science Foundation of China [41171178, 41171181]; Public Welfare Project of Agriculture Science Research [200903001] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | CHENOPODIUM-QUINOA WILLD. ; SHALLOW GROUNDWATER ; DEFICIT IRRIGATION ; WATER PRODUCTIVITY ; SALINITY ; GROWTH ; SALINIZATION ; INOCULATION ; LYSIMETERS ; STRESS |
| 研究领域[WOS] | Plant Sciences |
| WOS记录号 | WOS:000328536300037 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/7038 |
| 专题 | 海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室 |
| 通讯作者 | Liu, GM (reprint author), Chinese Acad Sci, State Key Lab Soil & Sustainable Agr, Inst Soil Sci, Nanjing 210008, Jiangsu, Peoples R China. gmliuissas@126.com; jsyang@issas.ac.cn |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Soil & Sustainable Agr, Inst Soil Sci, Nanjing 210008, Jiangsu, Peoples R China 2.Chinese Acad Sci, Key Lab Coastal Biol & Biol Resources Utilizat, Yantai Inst Coastal Zone Res YIC, Yantai 264003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, G. M.,Yang, J. S.,He, L. D.,et al. Salt dynamics in soil profiles during long-term evaporation under different groundwater conditions[J]. PLANT BIOSYSTEMS,2013,147(4):1211-1218. |
| APA | Liu, G. M..,Yang, J. S..,He, L. D..,Lv, Z. Z..,Shao, H. B..,...&jsyang@issas.ac.cn.(2013).Salt dynamics in soil profiles during long-term evaporation under different groundwater conditions.PLANT BIOSYSTEMS,147(4),1211-1218. |
| MLA | Liu, G. M.,et al."Salt dynamics in soil profiles during long-term evaporation under different groundwater conditions".PLANT BIOSYSTEMS 147.4(2013):1211-1218. |
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