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 。
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.
出处
《水土保持通报》
CSCD
北大核心
2001年第4期70-74,共5页
Bulletin of Soil and Water Conservation
基金
国家自然科学基金资助项目 (批准号 :499730 31 )
关键词
酸沉降
土壤可蚀性
团聚体
acid deposition
soil erodibility
aggregate
