期刊论文

中文

生态环境学报

1674-5906

2005

14

4

478-482

10.16258/j.cnki.1674-5906.2005.04.005

教育部高等学校骨干教师资助计划项目（[2000]65-HN005）；

本校为第一机构

为进一步探明酸沉降对森林红壤及生态环境的影响,模拟长沙地区降水酸度及离子组成,采用浸泡试验对两种森林红壤活性铝的释出及土壤理化性质的变化进行了研究.结果表明,模拟酸雨浸泡初期,土壤活性铝的释出量随浸泡次数的增加而增加,原始土壤pH值愈低,活性铝释出愈多;强酸度、高离子浓度(AR4)模拟酸雨对土壤中活性铝的溶出量远大于基础酸雨(AR3)及弱酸、低离子浓度酸雨(AR2)和对照酸雨(AR1).模拟酸雨酸度愈大,对土壤pH值的影响愈明显,不同土层间,以A 层土壤pH值下降最明显,B、C层土壤则下降较小.模拟酸雨模拟浸泡土壤25年后,土壤阳离子交换量均有不同程度下降,有机质含量高,原土壤阳离子交换量大的...

In order to explore effects of acid deposition on forest red soils, the ecology and environment, a batch experiment was conducted with four simulated acid rain solutions to study AI release and changes of soil physical and chemical prosperities in two forest red soils in Changsha area. The results showed that the release of active AI increased with increasing volume of simulated acid rain solutions at the beginning of the experiment, and more active AI was released from the soil with a lower pH value. The total release of active AI fi＇om the s...