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应用稳定状态土壤化学模型ＰＲＯＦＩＬＥ计算了柳州薄层砂页岩红壤和地表水的酸沉降临界负荷．对模型所需参数，建立了系统完整的收集、测量与计算方法，得到柳州地区针叶林植被区域由湿沉降计算总沉降的经验公式．结果表明：柳州薄层砂页岩红壤已处于酸化的稳定状态，其酸度、潜在酸度和硫沉降临界负荷分别为１．９６、１．８８和１．１ｋｅｑｈｍ－２ａ－１，而地表水的酸度、潜在酸度和硫沉降临界负荷分别为０．８８、０．８０和０．６１ｋｅｑｈｍ－２ａ－１．
The steady state chemical model of soil was used to calculate the critical load of acid deposition in red soil and surface water of thin sand shale in Liuzhou. Based on the parameters required for the model, a systematic collection, measurement and calculation method was established, and the empirical formula for calculating the total settlement of the coniferous forest vegetation in Liuzhou from wet deposition was obtained. The results show that the red soil of thin-shale sandstone in Liuzhou is in an acidified and stable state, and its acidity, potential acidity and sulfur deposition critical load are 1.96, 1.88 and 1.1 keqhm-2a-1, respectively, while the acidity , Latent acidity and sulfur deposition critical load were 0.88,0.80 and 0.61keqhm-2a-1 respectively.