Silicate weathering rate and controlling factors:study from the small granitic watershed in the Jiuhua Mountains
River water samples were collected 1-2 times/month from small granitic watersheds in the Jiuhua Mountains during one hydrological year(from July,2014 to June,2015),with a purpose of discussing on the silicate weathering rate and controlling factors in subtropical region.Moreover,rainwater,farmland water and groundwater were collected as well to elucidate the inputs from other sources.TDS(Total Dissolution Solid)in the Jiuhua Mountains watersheds ranges from 34.3 to 324mg/l,averaging 56.9mg/l,more than twice the average value(22.7 mg/l)of the global about 40 granitic watersheds compiled by Oliva in 2003.The contributions of silicate weathering and carbonate weathering to major cations are about 50%and 30%,respectively.The average silicate weathering and CO2 consumption rates of ten small granitic watersheds are about 6 t/(km2 y)and 0.9×105mol/(km2 y).As shown in our study,the temperature and runoff may be dominant factors of silicate weathering rate in subtropical areas.
Mingzhao Sun Weihua Wu Xiang Ji
Key Laboratory of Surficial Geochemistry,Ministry of Education,School of Earth Sciences and Engineer Zhejiang Provincial Institute of Cultural Relics and Archeology,Hangzhou 310014,China
国际会议
The 11th International Symposium on Geochemistry of the Earths Surface(GES-11)(第十一届地球表层地球化学国际研讨会)
贵阳
英文
1-3
2017-06-11（万方平台首次上网日期，不代表论文的发表时间）