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| 天津盐渍化农田土壤盐分变化特征 | |
| 引用本文： | 王美丽,李军,岳甫均,朱兆洲,刘小龙,郭笑笑.天津盐渍化农田土壤盐分变化特征[J].生态学杂志,2011,30(9). |
| 作者姓名： | 王美丽 李军 岳甫均 朱兆洲 刘小龙 郭笑笑 |
| 作者单位： | 1. 天津师范大学天津市水资源与水环境重点实验室,天津300387;天津师范大学城市与环境科学学院,天津300387 2. 天津师范大学天津市水资源与水环境重点实验室,天津,300387 3. 中国科学院地球化学研究所环境地球化学国家重点实验室,贵阳55002 |
| 基金项目： | 天津市应用基础及前沿技术研究计划，环境地球化学国家重点实验室开放课题，国家基础研究计划前期研究专项，天津师范大学博士基金 |
| 摘 要： | 通过对天津农田土壤合盐量及盐分组成的分析,研究了该区盐渍化农田盐分的组成状况和累积特征.结果表明:与蓟县背景对照土壤相比,东丽、津南和汉沽三区盐渍化农田的盐分组成均呈现很大的差异性；非盐渍化农田盐分呈表层累积特征,含盐量随土壤剖面深度的增加而减小,而盐渍化农田表层呈强烈的洗盐、脱盐现象,底层则呈明显的积盐现象；非盐渍化和盐渍化农田盐分的阴离子组成均以HCO3-为主,而阳离子组成则由无盐渍化农田的以Ca2+为主逐渐过渡到盐渍化农田的以Na+为主；盐渍化农田剖面盐分的空间变异性较强,Na+、C1-与SO42-均为表层低深层高,且pH、残余碳酸钠(RSC)、钠吸附比(SAR)及碱化度(ESP)也均比非盐渍化农田高,并呈现出盐化和碱化同步发生的特征. |
| 关 键 词： | 农田 盐渍化 盐分 土壤质量 天津 |
Change characteristics of soil salt content in salinized farmlands in Tianjin. |
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| WANG Mei-li,LI Jun,YUE Fu-jun,ZHU Zhao-zhou,LIU Xiao-long,GUO Xiao-xiao.Change characteristics of soil salt content in salinized farmlands in Tianjin.[J].Chinese Journal of Ecology,2011,30(9). | |
| Authors: | WANG Mei-li LI Jun YUE Fu-jun ZHU Zhao-zhou LIU Xiao-long GUO Xiao-xiao |
| Institution: | WANG Mei-li1,2,LI Jun1,YUE Fu-jun3,ZHU Zhao-zhou1,LIU Xiao-long1,GUO Xiao-xiao1,2(1Tianjin Key Laboratory of Water Resources and Environment,Tianjin Normal University,Tianjin 300387,China,2Urban and Environmental Science College,3State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China) |
| Abstract: | Based on the analysis of the salt content and its composition in farmland soils of Tianjing,this paper studied the characteristics of the salt composition and its accumulation in the salinized farmland soils of the City.Compared with that in non-salinized soils of Jixian County,the salt composition in salinized soils of Dongli,Jinnan,and Hangu districts had obvious difference.In non-salinized soils,salt accumulated in topsoil,and decreased with soil depth;while in salinized soils,desalination was obvious in... |
| Keywords: | farmland soil salinization salt content soil quality Tianjin |
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