摘要
通过室内模拟柱实验发现受渗滤液污染的场地存在着4个顺序氧化还原带,依次为硫酸盐还原带、铁还原带、硝酸盐还原带和氧还原带,范围分别为0-27 cm、27-62 cm、47-74 cm、74-91 cm.各带中生物群落结构发生了明显的变化,相应地以硫酸盐还原菌（SRB）、铁还原菌（IRB）和反硝化细菌（NRB）为优势菌群,同时也存在其他作用的细菌.氧化还原带和功能微生物的分布说明各氧化还原带间并不存在严格的界限,有一定的重叠现象.功能优势菌群的变化是氧化还原带更替的根本原因.
A column filled with sandy soil was constructed to investigate biogeochemical process of leachate polluted zones. Experimental results demonstrated that four sequent redox zones appeared in pollution plume. The zones can be named sulfate reduction zone, iron reduction zone, nitrate reduction zone and oxygen reduction zone, ranges of them were 0-27 cm, 27-62 cm, 47-74 cm, 74-91 cm. In the redox zones bacterial community structure changed, and the preponderant bacteria were sulfate reduction bacteria （ SRB ）, iron reduction bacteria （ IRB）, nitrate reduction bacteria （NRB）correspondingly, however there were other bacteria in the redox zones. Distribution of redox zones and functional bacteria means that there is not a significant boundary between redox zones, moreover one redox zone overlaps others. Evolvement of functional bacterial community brings the redox zones substitute.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2008年第11期3270-3274,共5页
Environmental Science
基金
国家重点基础研究发展规划(973)项目(2004CB418505)
国家自然科学基金项目(504778009)
关键词
渗滤液
氧化还原带
生物菌群
硫酸盐还原菌
铁还原菌
硝酸盐还原菌
leachate
redox zones
bacterial community
sulfate reduction bacteria （SRB）
iron reduction bacteria （IRB）
nitrate reduction bacteria （NRB）
