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为了进一步探讨我国酸沉降对水陆生态环境的影响以及典型地区生态系统对酸沉降的缓冲能力和临界负荷值，笔者对赣、鄂、湘３省具有代表性的土壤的ＳＯ吸附特性进行了研究。结果表明，红壤，待别是江西省的红壤，吸附ＳＯ的能力最强，最大吸附量达１１．５２ｍｇ／ｇ士；其余依次为黄壤、棕红壤、黄褐壤和黄红壤，最大吸附量分别为１１．１４，８．８３，６．８６和６．５３ｍｇ／ｇ土；红色石灰壤对ＳＯ的吸附能力最弱，最大吸附量仅３．５５ｍｇ／ｇ土，只及红壤的３０．８％。可以预计，就地区而言，以红壤为主的江西省是我国对酿沉降最敏感的地区之一。
In order to further explore the impact of acid deposition in our country on the terrestrial and ecological environment and the buffer capacity and critical load of acid deposition in typical areas, the author studied the SO adsorption characteristics of soils in Jiangxi, Hubei and Hunan provinces. The results showed that the red soils were the red soils in Jiangxi Province, and the strongest adsorption capacity was SO2. The maximum adsorption capacity was 11.52 mg / g, and the remaining were yellow soil, brown red soil, yellow brown soil and yellow-red soil. The maximum adsorption capacities were 11.4, 8.83, 6.86 and 6.53 mg / g, respectively. The red lime soil had the weakest SO adsorption capacity, the maximum adsorption capacity was only 3.55 mg / g soil, only about 30.8% . It can be estimated that in terms of the region, Jiangxi Province, with its red soil as the dominant species, is one of the most sensitive areas for sedimentation in China.