陆地生态系统酸沉降临界负荷及模型研究

Study on Critical Loading and Model of Acid Precipitation in Terrestrial Ecosystem

酸沉降临界负荷作为确定陆地生态系统对酸沉降的容许标准和制定污染控制对策的可行性工具,近年来越来越受到重视。为预测土壤、水体酸化趋势而开发的酸化模型在临界负荷的计算中起了重要作用。文章综述了临界负荷的概念、意义、使用现状、主要计算模型特点及存在问题。并讨论了模型在中国利用的可能性。

Taking acid precipitation critical loading as a feasible tool to define the permissible standard of acid precipitation to terrestrial ecosystem and establish pollution control countermeasure has laid more and more stress recently, and played an important role on predicting acidification trend of soil and water body, and developing acidification model for calculating critical loading. The concept, meaning, applying status, major characteristics of calculating model and existing problems were described, and the possibility of applying the model in China was also discussed.