中国南方80个地表水体的酸沉降临界负荷计算  

Acid-deposition critical loads for 80 surface-waters in southern China

作　　者：叶雪梅[1] 郝吉明[1] 段雷[1] 周中平[1] 

机构地区：[1]清华大学环境科学与工程系,北京100084

出　　处：《清华大学学报（自然科学版）》2001年第12期89-91,98,共4页Journal of Tsinghua University(Science and Technology)

摘　　要：研究了酸沉降对中国南方地表水体的影响。应用动态酸化模型 MAGIC,计算了中国南方 80个地表水体的酸沉降临界负荷。结果表明 :大部分水体的酸沉降临界负荷较高 ,大于 2 kmol.hm- 2 .a- 1 ,呈现地带性分布。西南地区的地表水酸沉降临界负荷高于华东和华南地区 ,这主要是因为南方土壤的酸化敏感性由东南向西北减弱。临界负荷较高 ,表明这些水体对酸化不敏感。地表水酸化不太可能成为中国严重的区域环境问题。但是少数山地水体的酸化趋势值得关注。The acid deposition critical loads for 80 surface waters in southern China were calculated using a dynamic acidification model-MAGIC. The results show that the acid deposition critical loads for most of these surface waters are quite high, with values higher than 2 kmol·hm -2 ·a -1 and have evident spatial distributions. The surface waters in southwestern China have the higher critical loads than those in eastern and central China. The main reason is that the soil sensitivity to acidification decreases from South China and East China to Southwest China. Surface water acidification is not likely to become a severe regional problem in China but acidification of some mountainous surface waters should be addressed.

关 键 词：酸沉降 临界负荷 中国南方 地表水体 MAGIC 计算模型 动态酸化模型 水体污染 

分 类 号：X517[环境科学与工程—环境工程]