摘要
对我国西南酸雨较严重的四川重庆、贵州贵阳两地的典型森林进行了野外调查和采样,并在湖南会同、陕西周至和河北兴隆进行对比考察,对五个典型地区的土壤进行了风化模拟实验研究,探索降水pH和土壤风化速率之间的关系以及不同地区土壤风化速率之间的区别和原因。进而预测各地森林生态系统中营养及毒性元素在酸沉降影响下的供应动力学状况,并以此来了解酸性降水对该区森林生态的长期影响.
Investigations were made and soil samples were collected in 5 places in Southwest China with acid precipitation and 3 places with no acid precipitation. The relationship between pH values in the precipitation and rates of soil weathering, and causes of such differences were studied. The supply dynamics of nutrients and toxic elements in various forest soils was predicted according to the effects of acid deposition. The long-term effects were evaluated for those forest ecosystems.
出处
《环境科学学报》
CAS
CSSCI
CSCD
北大核心
1993年第1期31-38,共8页
Acta Scientiae Circumstantiae
关键词
森林系统
土壤
风化
酸雨
模拟
acid precipitation, forest ecosystems, soil weathering.
