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	In situ phytoremediation of PAH-contaminated soil by intercropping alfalfa (Medicago sativa L.) with tall fescue (Festuca arundinacea Schreb.) and associated soil microbial activity
	Sun, Mingming1; Fu, Dengqiang1; Teng, Ying1; Shen, Yuanyuan1; Luo, Yongming1; Li, Zhengao1; Christie, Peter2
刊名	JOURNAL OF SOILS AND SEDIMENTS
	2011-09-01
卷号	11期号:6页码:980-989
关键词	Intercropping Phytoremediation Polycyclic aromatic hydrocarbons Soil microbial activity
ISSN号	1439-0108
DOI	10.1007/s11368-011-0382-z
通讯作者	Teng, Ying(yteng@issas.ac.cn)
英文摘要	A 7-month field experiment was conducted to investigate the polycyclic aromatic hydrocarbon (PAH) remediation potential of two plant species and changes in counts of soil PAH-degrading bacteria and microbial activity. Alfalfa and tall fescue were grown in monoculture and intercropped for 7 months in contaminated field soil. Soil and plant samples were analyzed for PAHs. Plant biomass, densities of PAH-degradation soil bacteria, soil microbial biomass C and N, enzyme activities, and the physiological profile of the soil microbial community were determined. Average removal percentage of total PAHs in intercropping (30.5%) was significantly higher than in monoculture (19.9%) or unplanted soil (-0.6%). About 7.5% of 3-ring, 12.3% of 4-ring, and 17.2% of 5(+6)-ring PAHs were removed from the soil by alfalfa, with corresponding values of 25.1%, 10.4%, and 30.1% for tall fescue. Intercropping significantly enhanced the remediation efficiency. About 18.9% of 3-ring, 30.9% of 4-ring, and 33.4% of 5(+6)-ring PAHs were removed by the intercropping system. Higher counts of soil culturable PAH-degrading bacteria and elevated microbial biomass and enzyme activities were found after intercropping. Soil from intercropping showed significantly higher (p < 0.05) average well-color development obtained by the BIOLOG Ecoplate assay and Shannon-Weaver index compared with monoculture. Cropping promoted the dissipation of soil PAHs. Tall fescue gave greater removal of soil PAHs than alfalfa, and intercropping was more effective than monoculture. Intercropping of alfalfa and tall fescue may be a promising in situ bioremediation strategy for PAH-contaminated soils.
收录类别	SCI
WOS关键词	POLYCYCLIC AROMATIC-HYDROCARBONS ; BACTERIAL COMMUNITIES ; METAL PHYTOEXTRACTION ; EXTRACTION METHOD ; ENZYME-ACTIVITIES ; PYRENE ; PHENANTHRENE ; DEGRADATION ; BIOMASS ; RHIZOSPHERE
WOS研究方向	Geology ; Agriculture
WOS类目	Geosciences, Multidisciplinary ; Soil Science
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000294065600011
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558878
专题	南京土壤研究所
通讯作者	Teng, Ying
作者单位	1.Chinese Acad Sci, Key Lab Soil Environm & Pollut Remediat, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Agri Food & Biosci Inst, Agri Environm Branch, Belfast BT9 5PX, Antrim, North Ireland
推荐引用方式 GB/T 7714	Sun, Mingming,Fu, Dengqiang,Teng, Ying,et al. In situ phytoremediation of PAH-contaminated soil by intercropping alfalfa (Medicago sativa L.) with tall fescue (Festuca arundinacea Schreb.) and associated soil microbial activity[J]. JOURNAL OF SOILS AND SEDIMENTS,2011,11(6):980-989.
APA	Sun, Mingming.,Fu, Dengqiang.,Teng, Ying.,Shen, Yuanyuan.,Luo, Yongming.,...&Christie, Peter.(2011).In situ phytoremediation of PAH-contaminated soil by intercropping alfalfa (Medicago sativa L.) with tall fescue (Festuca arundinacea Schreb.) and associated soil microbial activity.JOURNAL OF SOILS AND SEDIMENTS,11(6),980-989.
MLA	Sun, Mingming,et al."In situ phytoremediation of PAH-contaminated soil by intercropping alfalfa (Medicago sativa L.) with tall fescue (Festuca arundinacea Schreb.) and associated soil microbial activity".JOURNAL OF SOILS AND SEDIMENTS 11.6(2011):980-989.

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