中南大学学报（自然科学版）2012，Vol.43Issue(1)：38-45,8.
中国典型酸雨区大气湿沉降化学特性
Ions distributional characteristics of wet precipitation in typical acid rain areas of China
摘要
Abstract
Based on the long term monitoring data of the three catchments, I.e., Caijiatang, Leigongshan and Tieshanping in typical acid areas of China, the chemical compositions characteristics of wet precipitation were studied. The results show that three catchments are serious precipitation acidification, and the multi-year average precipitation pH in the order from big to small is Leigongshan (4.96), Caijiatang (4.62) and Tieshanping (4.12). The dominant anion is SO2-4 and the cation is NH+4 which are the wet precipitation and the forested throughfall in Caijiatang and Tieshanping. In Caijiatang, SO42" accounts for 26.67% and 24.14% respectively, and NH4+ accounts for 31.67% and 23.69%. In Tieshanping, SO2-4 accounts for 54.73% and 12.26% respectively, and NH+4 accounts for 8.92% and 59.14%. The dominant anion Cl- and cation NH+4 of the wet precipitation in Leigongshan account for 16.59% and 20.99% respectively, and the dominant anion SO2-4 and cation K+ of the forested throughfall account for 19.83% and 16.73%. Compared to the wet precipitation,the ion concentrations in the forested throughfall have undergone a variety of ion enrichment, and the total ion increases of Caijiatang, Leigongshan and Tieshanping are 2.75 times, 1.79 times and 4.63 times, respectively.关键词
酸雨/湿沉降/大气降水Key words
acid rain/ acid deposition/ atmospheric precipitation分类
资源环境引用本文复制引用
向仁军,柴立元,张青梅,肖劲松,赵大为..中国典型酸雨区大气湿沉降化学特性[J].中南大学学报（自然科学版）,2012,43(1):38-45,8.基金项目
中国酸沉降综合影响观测研究项目(IMPACTS)(CHN0030) （IMPACTS）
