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研究区酸雨出现的频率平均为20．65％，常绿阔叶林冠层穿透水和树干流均使降雨的pH值发生变化，总径流水和地表径流水的pH值则是常绿阔叶林的低于荒草疏林地，林内土壤酸性较林外土壤强，且表层土要酸于下属土。
The average frequency of occurrence of acid rain in the study area was 20.65%. The change of pH value of rainfall in the canopy of the evergreen broad-leaved canopy changed the total rainfall, and the total runoff and surface runoff water pH values were evergreen broadleaf Forest less than the grassland sparse forest, forest soil acidity than the forest soil, and the surface soil to acid under the soil.