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研究并比较了广东酸雨地区鹤山丘陵综合实验站区内不同类型森林降水的化学特征.结果表明，和大气降水相比，针阔叶林林内降水除NO3外其它离子含量都明显增加，马尾松针叶林冠层穿透雨和树干径流中离子含量增加倍数最高分别为34倍和12倍，阔叶林穿透雨和树干径流中离子含量增加倍数最高分别为8倍和10倍，针叶林降水比阔叶林降水离子富集程度较为显著．林内降水中马尾松针叶林树干径流离子总含量小于穿透雨离子总含量，阔叶林穿透雨离子总含量小于树干径流离子总含量.不同阔叶林型林内降水中离子含量是不同的.针叶林林内降水有进一步酸化趋势.林内降水离子富集导致森林冠层正负电荷数不平衡，营养离子大量淋失，使林冠层养分亏损．
The chemical characteristics of different types of forest precipitation in Heshan Hill Experimental Station in acid rain area of Guangdong were studied and compared.The results showed that the precipitation of coniferous and broadleaf forest was significantly higher than that of NO3, The highest fold increase of ion content in canopy through-rain and trunk runoff was 34 times and 12 times respectively, and the highest fold increase of ion content in broadleaf forest through rain and trunk runoff was 8 times and 10 times respectively. The precipitation ratio of coniferous forest The precipitation enrichment degree of broadleaf forest is more significant. The total content of runoff ions in the Pinus massoniana coniferous forest was less than that of the total penetrating rain, and the total content of penetrating rain was less than the total content of trunk runoff ions in the precipitation. Precipitation in the coniferous forest tends to be further acidified, and precipitation of ions in the forest leads to unbalanced positive and negative charge of the forest canopy, large amount of leaching of nutrient ions and loss of nutrients in the canopy layer.