| 酸沉降对土壤团聚体及土壤可蚀性的影响 |
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| 引用本文： | 刘广深,许中坚,徐冬梅. 酸沉降对土壤团聚体及土壤可蚀性的影响[J]. 水土保持通报, 2001, 21(4): 70-74 |
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| 作者姓名： | 刘广深 许中坚 徐冬梅 |
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| 作者单位： | 浙江大学环境科学研究所, |
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| 基金项目： | 国家自然科学基金资助项目(批准号:49973031 |
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| 摘 要： | 从土壤团聚体的角度探讨了酸沉降对土壤可蚀性的影响。根据已有的资料分析表明 ,酸沉降主要通过改变土壤的酸碱条件、土壤胶体的稳定性以及土壤胶结物质的数量和性质来影响土粒团聚和有机无机复合 ;其结果是团聚作用降低而黏粒含量增加 ,最终导致土壤的可蚀性加大。由此可见 ,长期的酸沉降在土壤侵蚀退化中具有重要作用 ,进行深入而广泛的有关酸沉降对土壤结构体的影响研究 ,可为从土壤结构管理的角度防治土壤侵蚀退化提供理论依据
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| 关 键 词： | 酸沉降 土壤可蚀性 团聚体 |
| 文章编号： | 1000-288(2001)04-0070-05 |
| 收稿时间： | 2001-06-01 |
| 修稿时间： | 2001-06-01 |
Effects of Acid Deposition on Soil Aggregate and Soil Erodibility |
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| LIU Guang-shen,XU Zhong-jian and XU Dong-mei. Effects of Acid Deposition on Soil Aggregate and Soil Erodibility[J]. Bulletin of Soil and Water Conservation, 2001, 21(4): 70-74 |
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| Authors: | LIU Guang-shen XU Zhong-jian XU Dong-mei |
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| Affiliation: | Institute of Environmental Science, Zhejiang University, Hangzhou 310027, PRC;Institute of Environmental Science, Zhejiang University, Hangzhou 310027, PRC;Institute of Environmental Science, Zhejiang University, Hangzhou 310027, PRC |
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| Abstract: | Acid deposition and soil erosion have deteriorated human living environment, which has aroused a general concern from people all over the world. The erodibility of acid deposition on soil from the angle of aggregate is studied. Analyzing of the effects of acid deposition on soil system showed that acid deposition affects soil aggregation and organo mineral complex mainly by altering soil acid based condition, soil colloidal stability and the amount and property of soil cemedins. The influences made soil aggregation decreased, clay content increased and finally soil erodibility enhanced. Obviously, long time acid deposition plays an important role in soil erosion. |
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| Keywords: | acid deposition soil erodibility aggregate |
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