摘要
选择苜蓿草为供试植物，以污染物含量水平、专性细菌和真菌及有机肥为调控因子，进行了植物法生物修复多环芳烃（ＰＡＨｓ）和矿物油污染土壤的调控研究．结果表明，ＰＡＨｓ和矿物油的降解率与有机肥含量呈正相关，增加有机肥５％，可提高矿物油降解率１７．６％～２５．６％，ＰＡＨｓ降解率９％．在植物存在条件下，土壤微生物降解功能增强．多环芳烃总量的平均降解率比无植物对照土壤提高２．０％～４．７％．投加特性降解真菌可不同程度地提高土壤ＰＡＨｓ总量和矿物油的降解率．真菌对萤蒽、芘和苯（ａ）蒽／艹屈的降解有明显促进作用．而细菌能明显提高苊稀／芴、蒽和苯（ａ）萤蒽／苯（ｋ）萤蒽的降解率．
Taking alfalfa( Medicago sativa) as test plant and
with pollutant content level,specific bacteria,fungi and organic fertilizer as control factors,the
plant bioremediation of polycyclic aromatic hydrocarbons (PAHs) and mineral oil contaminated
soil was conducted.The degradation rate of PAHs and mineral oil was positively correlated with
the content of organic fertilizer in soil.Increasing the content of organic fertilizer by 5% would
increase the degradation rate of mineral oil by 17 6～25 6%,PAHs by 9%.On the presence of
plants,the degradation ability of soil microbes was enhanced,with the average degradation rate
of total PAHs 2 0～4 7%higher than that of control.The applied fungi improved in some degree
the degradation of PAHs and mineral oil.Fungi obviously enhanced the degradation rate of
fluoranthrene,pyrene and benzo(a)anthracene/chrysene,while bacteria obviously increased the
degradation rate of acenathene/fluorene,anthracene and
benzo(a)fluoranthene/benzo(k)fluoranthrene.
出处
《应用生态学报》
CAS
CSCD
1999年第2期225-229,共5页
Chinese Journal of Applied Ecology
基金
国家自然科学基金
中国科学院沈阳生态试验站资助项目
关键词
土壤污染
多环芳烃
植物生物修复
降解率
Soil pollution Polycyclic aromatic
hydrocarbons(PAHs), Bioremediation, Degradation rate.
