模拟酸雨对浙江省主要类型土壤活性铝溶出规律研究

The Leaching Patterns of Alumium in Soils Collected from Zhejiang Province by Simulated Acid Rain.

本文采用静、动态溶提方法研究了模拟酸雨对浙江省主要类型土壤中活性铝释放量的影响。结果表明,酸雨对强酸性土壤(pH<5)中活性铝的释放有较大的影响,对微酸性和近中性的土壤影响较小;影响土壤活性铝溶出的因素主要是酸雨的pH值,土壤pH和缓冲能力,以及环境温度等。结果还表明,酸性降雨对土壤的淋溶,在开始阶段土壤淋出液中的活性铝浓度较高。随着酸雨淋溶量的增加,活性铝的淋出浓度将迅速下降。

The leaching of soil active Al^(3+) by simulated acid rains was investigated by static and dynamic experiments. The results indicated that acid rain influenced the leaching of active Al^(3+) strongly in acid soil and weakly in slight acid and neutrat soils. The main factors influencing active Al^(3+) leaching Were of simulated acid rain, pH and buffer capacity of soils and the temperature. The results indicated that acid rain may harm the agro-ecology of acid soil regions in south China,