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对芜湖市四褐山杉木林土壤进行室内模拟酸性降雨 ,研究该土壤对酸雨的缓冲性能 .结果表明 :土壤经酸雨处理后 ,在 1～ 7天内有酸化的趋势 ,7～ 14天时具有明显的缓冲作用 ,14天后基本上又恢复到原来的 pH值状态 ;土壤对不同浓度酸雨的缓冲能力随酸性的降低而增加 ;不同土层之间的缓冲性能呈现一定的规律 .
The indoor simulated acid rain was applied to the soil of Cunninghamia lanceolata plantation in Wuhu City to study the buffer performance of the soil against acid rain.The results showed that the soil had acidified within 1 ~ 7 days after acid rain treatment, After 14 days, the buffering effect returned to the original pH value. The buffering capacity of soil with different concentrations of acid rain increased with the decrease of acidity. The buffering performance of different soil layers showed a certain regularity.