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| 三江平原小叶章湿地土壤SO4^2-的吸附与解吸特征 | |
| 引用本文： | 李新华,刘景双,王勇,张锡金.三江平原小叶章湿地土壤SO4^2-的吸附与解吸特征[J].山东农业科学,2010(1):63-66. |
| 作者姓名： | 李新华 刘景双 王勇 张锡金 |
| 作者单位： | 1. 山东省农业可持续发展研究所,山东,济南,250100;中国科学院东北地理与农业生态研究所,吉林,长春,130012 2. 中国科学院东北地理与农业生态研究所,吉林,长春,130012 3. 山东省农业可持续发展研究所,山东,济南,250100 |
| 基金项目： | 中国科学院知识创新工程重要方向项目(No.KZCX2-YW-309);;国家重点基础研究发展计划(973计划)项目(2004CB4185007)资助 |
| 摘 要： | 以三江平原小叶章湿地为研究对象，研究了小叶章湿地土壤SO4^2-的吸附和解吸特征。结果表明，小叶章湿地不同层土壤对SO4^2-的等温吸附均可以用Langmuir、Freundrich和Temkin方程来表示，且吸附能力均随土壤深度的增加而增加，这种变化和土壤有机质、pH值和粘粒含量密切相关。土壤的解吸能力不仅和土壤质地密切相关，而且受土壤中吸附SO4^2-的影响，一般当土壤中吸附SO4^2-量较大时，解吸的绝对量大，但解吸率较低，反之亦然。吸附率明显高于解吸率，对于延缓土壤的酸化具有一定的意义。 |
| 关 键 词： | 三江平原 小叶章湿地 土壤 SO4^2- 吸附 解吸 |
Sulfate Adsorption and Desorption Characteristics of Calamagrostis angustifolia Wetland Soil in Sanjiang Plain |
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| LI Xin-hua,LIU Jing-shuang,WANG Yong,ZHANG Xi-jin.Sulfate Adsorption and Desorption Characteristics of Calamagrostis angustifolia Wetland Soil in Sanjiang Plain[J].Shandong Agricultural Sciences,2010(1):63-66. | |
| Authors: | LI Xin-hua LIU Jing-shuang WANG Yong ZHANG Xi-jin |
| Institution: | 1.Shandong Institute of Agriculture Sustainable Development;Jinan 250100;China;2.Northeast Institute of Geography and Agricultural Ecology;Chinese Acadamy of Sciences;Changchun 130012;China |
| Abstract: | The characteristics of sulfate adsorption and desorption were studied by choosing Calamagrostis angustifolia wetland in Sanjiang Plain as the research object.The results showed that the isotherms adsorption of different layer soil to sulfate could be expressed by Freundrich,Langmuir and Temkin equations.The adsorption ability increased with the increasing of soil depth,which was closely correlated with the content of soil clay,organic matter and pH value.The desorption ability was closely correlated with no... |
| Keywords: | Sanjiang Plain Calamagrostis angustifolia wetland Soil Sulfate Adsorption Desorption |
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