The pH value of soil is low in major forests in Dinghushan, but since 1994 the soil wasn't acidified again, suggesting the soil has a steady pH value. The pH value is higher in the coniferous forest than in mixed forest, and the broad-leaved forest has the lowest pH value.%鼎湖山主要森林类型土壤pH值都较低，但从1994年以来土壤酸化都得到了控制，pH值比较稳定。针叶林土壤pH值比混交林高，季风常绿阔叶林pH值最低。
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