Quantitative Evaluation and Modeling about Forest Floor Effects on Soil Acidification Induced by Acid Precipitation

参照SMART模型，建立了描述森林有机层酸化的有机层模型。有机层模型与改进的SMART模型相结合更能准确地评价森林土壤酸化。这种新的模型被称为两层模型。考虑到与酸化或中和有关的生态系统过程，例如。利用双层模型预测了100年森林土壤的氮矿化、硝化、养分吸收和有机酸的产生以及森林土壤酸化。模型预测结果表明，氮矿化速率和硝化速率对森林土壤酸化有较强的影响，有机层对酸沉降有中和作用。

Referring to the SMART model, the organic layr model was developed to describe acidification of forest organic layr. The organic layr model and the modified SMART model were combined to evaluate forest soil acidification more properly. This new model is called two layr model. Considering ecosystem processes concerned to acidification or neutralization, ex. nitrogen mineralization, nitrification, nutrient uptake and creation of organic acid, forest soil acidification was predicted for 100years using the two layr model. Model prediction revealed that nitrogen mineralization rates and nitrification rates had strong effects on forest soil acidification and that organic layr neutralized acid deposition.The study for the these three years was summarized and published as the book-style report.