Characteristics of Bacillus cereus Spore Counts in Soils w ith Underlying Gold Mineralization in Northwestern Sichuan, China: Results from a Pilot Study

查看全文 作　　者：Wang Hongmei Yang Fengqing Qiao Shengying Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074 出　　处：《Journal of China University of Geosciences》索引2003年第14卷第1期,共8页 基　　金：heworkissupportedbytheMinistryofLandandResources (Nos.2 0 0 0 4 41and950200203);theMinistryofEducation(OutstandingYouthUniversityTeachersFund) ;andtheNationalNaturalScienceFoundationofChina (No .4 0 2 0 2 0 11) 摘　　要：A pilot survey on a microbial mineral exploration method based on so il Bacillus cereus spore counts was carried out across three different gold mi ning regions, which vary in soil type, climate condition and geological setting in northwestern Sichuan, China. B horizon soils from these sites were analyzed for B. cereus spores, Au, Ag, Cu, Pb and Zn. The results show that the numbe rs of B. cereus spores generally increased in soils overlying gold mineraliz ation. Specifically, elevated spore counts were found in samples slightly offset from the outcrops of orebodies, whereas soils directly above the outcrops of or ebodies usually contained low spore counts. However, the background counts of B. cereus spores varied from place to place and were complicated by environmen tal and pedological factors, but the relative ratios of spore counts still were indicative of the underlying gold mineralization. 关 键 词：仙人掌 孢子数 金矿床 调查 地质特征 中国 四川 土壤 矿化作用