南方土壤酸沉降敏感性研究Ⅷ.盐基离子淋溶的多因素分析  

Study on Soil Sensitivity to Acid Deposition in South China.Ⅷ Multi-factor Analysis on Cation Leaching.

作　　者：杨平[1] 仇荣亮[1] 莫大伦[1] 

机构地区：[1]中山大学环境科学系

出　　处：《热带亚热带土壤科学》1998年第3期215-219,共5页

基　　金：国家自然科学基金!49301018;广东省自然科学基金!960043

摘　　要：在模拟酸雨条件下土壤盐基离子淋溶特性研究的基础上，采用生成分分析及多元回归分析方法研究了土壤盐基淋溶的影响因子．结果表明，通过主成分分析方法可将选取的15个原始变量综合成为2个主成分，为进一步分析盐基释放量与土壤理化性质之间的关系提供了方便．影响盐基释放量的主要因子有土壤原始pH值、可交换性盐基含量、蒙脱石含量、活性氧化物、1.4nm矿物等，它们表现出效应，而高岭石和可交换性铝含量表现出负效应．利用主成分分析的结果进行多元回归分析，可得到土壤累积盐基释放量与2个主成分之间的回归方程．Based on the results of soil cation leaching charateristics under simulated acid rain, the affecting factors on soil cationleaching were analysed by principal cmponent analysis and multi-regression method. The results showed that thefactors influencing the amount of base cation leaching could be simplized into two principal components. The factorsincluding soil original pH value, catior exchange capacity, content of montmorillonite, activated oxidates and 1.4 nmminerals had the positive effects on cation leaching, while content of kaolinite and exchangable aluminium had thenegative. The multi-regression equation between the accumulated amounts and two principal components was putforward by multi-regression analysis.

关 键 词：酸雨 盐基离子 淋溶 

分 类 号：X517[环境科学与工程—环境工程]