| 酸化对茶园黄棕壤CEC和粘土矿物组成的影响 |
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| 引用本文： | 徐仁扣,赵安珍,姜军.酸化对茶园黄棕壤CEC和粘土矿物组成的影响[J].生态环境,2011(10):1395-1398. |
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| 作者姓名： | 徐仁扣 赵安珍 姜军 |
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| 作者单位： | 中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室; |
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| 基金项目： | 国家自然科学基金项目(40971135) |
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| 摘 要： | 用采自江苏溧阳种茶13 a和34 a的茶园黄棕壤表土和种茶54 a的茶园土壤剖面研究了酸化对土壤黏土矿物组成和阳离子交换量（CEC）的影响。结果表明：种茶13 a和34 a,表层土壤发生明显酸化,但土壤2∶1型黏土矿物的质量分数和CEC均与荒地土壤相似,说明酸化没有对黏土矿物转化和CEC产生明显影响。但种茶54 a后土壤发生进一步酸化,表层和表下层土壤pH降至3.79和3.70。土壤2∶1型黏土矿物质量分数随采用深度的增加而增加,高岭石质量分数呈相反的变化趋势。说明表层和表下层土壤的严重酸化加速土壤2∶1型黏土矿物向1∶1型高岭石的转化,这导致表层和表下层土壤CEC显著减小。
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| 关 键 词： | 茶园土壤 酸化 CEC 粘土矿物 |
Effect of acidification on CEC and mineral compositions of yellow brown soils in tea gardens. |
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| XU Renkou,ZHAO Anzhen,JIANG Jun State Key Laboratory of Soil , Sustainable Agriculture.Effect of acidification on CEC and mineral compositions of yellow brown soils in tea gardens.[J].Ecology and Environmnet,2011(10):1395-1398. |
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| Authors: | XU Renkou ZHAO Anzhen JIANG Jun State Key Laboratory of Soil Sustainable Agriculture |
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| Institution: | XU Renkou,ZHAO Anzhen,JIANG Jun State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China |
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| Abstract: | Effect of acidification on cation exchange capacity(CEC) and mineral compositions of yellow brown soils was investigated with samples of surface soils from 13-and 34-year tea gardens and a profile from 54-year tea garden.Results indicated that obvious acidification occurred in surface soils after tea cultivation of 13 and 34 years,while the contents of soil 2:1 type clay minerals and CEC did not change significantly compared with the soil from unused land.However,After tea cultivation of 54 years,further ac... |
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| Keywords: | tea garden soils soil acidification CEC clay minerals |
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