作　　者： ; (何宜庚）;

机构地区： 华南师范大学地理科学学院地理科学系

出　　处： 《热带地理》 1991年第2期157-164,共8页

摘　　要： 模拟酸雨对赤红壤的淋溶实验结果表明,pH 3.0以上的酸雨虽对赤红壤急性酸化的影响不大,但会导致土壤盐基饱和度下降和氢、铝饱和度升高;酸雨的淋溶造成了某些土壤营养元素和有机质含量减少,但提高了碱解氮和速效磷的含量水平;酸性降水对土壤金属元素的释放有促进作用,Ca、Mg等盐基离子淋失,Al、Fe等金属元素活化:土壤溶液的Ca/Al比随淋溶程度的加深而逐渐下降。 The results of leaching experiment of simulated acid rain on lateritic red earth show that the acid rain of pH>3.0 can not cause the abrupt acidification of the soil, but produces a decrease of base saturation and an increase of saturation of exchangeable H and Al. The content of some nutrient elements and organic matter in soils leached by acid rain is decreased in varying degrees, but that of available N and P is increased, Acid rain can also accelarate the realease of metal elements in the soil, this results in leaching of basic elements such as Ca and Mg and activation of the elements such as Al and Fe. The molar ratio of Ca to Al in soil solution decreases with the intensification of leaching.

关 键 词： 赤红壤 酸雨

领　　域： [农业科学] [农业科学]