%0 Journal Article
%T Study on phytoremediation of phenanthrene-contaminated soil with alfalfa (Medicago sativa L.)<br>苜蓿对多环芳烃菲污染土壤的修复作用研究
%A Fan Shu-xiu
%A Li Pei-jun
%A Gong Zong-qiang
%A He Na
%A Zhang Li-hong
%A Ren Wan-xia
%A Verkhozina V A
%A <br>Fan SX
%A Li PJ
%A Gong ZQ
%A He N
%A Zhang LH
%A Ren WX
%A Verkhozina VA
%J 环境科学
%D 2007
%I 
%X Pot experiment was used to investigate phytoremediation of phenanthrene-contaminated soil with alfalfa(Medicago sativa L.). Results indicated that phenanthrene had inhibitive effect on alfalfa growth, and higher phenanthrene concentration seriously prevent alfalfa growth. When the concentration was 445.22mg/kg, the shoot and root biomasses were only 57.31% and 31.20% of control respectively. Alfalfa significantly promoted phenanthrene degradation in the soil. After 60 days, 85.68%~91.40% and 75.25%~86.61% of spiked phenanthrene disappeared from the rhizosphere and non-rhizosphere soils respectively. And the average removal ratio of phenanthrene in rhizosphere soils was 6.33% higher than that in non-rhizoshpere soils. The residual concentration of phenanthrene in the rhizosphere was lower than that in the non-rhizosphere but the dehydrogenase activity was on the contrary. With phenanthrene concentration increase the removal ratio and dehydrogenase activity decreased. A positive correlation was observed between the soil dehydrogenase activity and the removal ratio of phenanthrene in both the rhizosphere and non-rhizosphere soils. Therefore the presence of alfalfa roots was effective in promating the phytoremediation of phenanthrene.
%K alfalfa(Medicago sativa L
%K )
%K phytoremediation
%K PAHs
%K phenanthrene
%K contaminated soil<br>苜蓿
%K 植物修复
%K 多环芳烃
%K 菲
%K 污染土壤
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=6060DEFABF61E04B&yid=A732AF04DDA03BB3&vid=D3E34374A0D77D7F&iid=9CF7A0430CBB2DFD&sid=C50D3A5A67C234D1&eid=E213125423CD99CD&journal_id=0250-3301&journal_name=环境科学&referenced_num=13&reference_num=28