本文用MAGIC区域模型研究了我国东部地区生态系统对酸沉降的临界负荷 ,并初步编制了临界负荷图。根据模型的预测结果 ,对不同酸沉降水平下 ,该地区土壤的酸化趋势进行了讨论。根据所编制的酸沉降临界负荷图 ,讨论了我国东部七省临界负荷的概况及其实际意义 In this paper, we use the MAGIC model to study the critical load on the acid deposition in the eastern part of our country and preliminarily prepare the critical load map. According to the predictions of the model, the acidification trend of soils in different areas under different levels of acid deposition is discussed. According to the preparation of acid deposition critical load map, the paper discusses the critical load of the seven provinces in eastern China and its practical significance