IMPACTS OF UNCERTAINTIES IN BASE-CATION DEPOSITION OF THE ASSESSMENT OF CRITICAL LOADS FOR ACID DEPOSITION

摘要

Less attention has been paid to changes in the concentration and the deposition amounts of base cations. This has brought about great uncertainty in the determination of critical loads for acid deposition. The paper utilized a newly developed long-term soil acidification model(LTSAM), to simulate the effects of atmospheric base cations on the critical load of red earth in Wenzhou, Zhejiang Province. Results showed that great changes in atmospheric base-cation Deposition decreased the critical load by 68/100.