摘要
模拟酸雨作用下土壤酸化在垂直方向上具有阶段性，这决定着土壤元素迁移的阶段性。表现为在红壤酸化初期表层（Ａ层）元素快速向底层（Ｂ或Ｃ层）迁移，随着酸化由表土向下的深入，淀积于Ｂ层的元素又可以发生再迁移。酸雨的输入总体上加速了元素迁移的速率，同时也促进了土壤矿物风化和元素形态从迟效状态向可供作物吸收的易迁移状态转化。
The influence of simulated acid rain on clement transportation of different soil horizons in Zhejiang Province was investigated. By the means of reconstructed soil columns in Lab, successive leaching treatments were carried out with simulated aicd rain of PH3.00, pH 4.00,pH 5.00 for about four years rainfall on each columns. The results showed that soil element transportation was controlled by soil acidification, element moved from Horizon A to Horizon B at the beginning of soil acidification. With the acidification going on,element in Horizon B continued to move from Horizon B to Horizon C. Simulated acid rain not only increased leaching speed of elements, hut also changed some of the mineralizable elements to mobile ones.
出处
《农业环境保护》
CSCD
1996年第4期150-154,共5页
Agro-Environmental Protection
基金
国家自然科学基金
关键词
模拟酸雨
红壤
元素迁移
simulated acid rain, red loam, element transportation
