干旱区生态环境知识资源中心(Arid): Growth tolerance and remediation potential of six plants in oil-polluted soil

Arid

DOI	10.1007/s11368-019-02348-w
	Growth tolerance and remediation potential of six plants in oil-polluted soil
	Wei, Yang 1,2,3; Wang, Yiquan 1; Duan, Min 4; Han, Jichang 2,3; Li, Gang 2,3
通讯作者	Wang, Yiquan
来源期刊	JOURNAL OF SOILS AND SEDIMENTS
ISSN	1439-0108
EISSN	1614-7480
出版年	2019
卷号	19 期号:11 页码:3773-3785
英文摘要	Purpose The aim of this study was to screen plant species for remediation of oil-polluted soil in a semi-arid loess area. Materials and methods Pot experiments were conducted to test six indigenous plant species: ryegrass (Lolium perenne), tall fescue (Festuca ovina), wheatgrass (Agropyron cristatum), alfalfa (Medicago sativa), erect milkvetch (Astragalus adsurgens), and caragana (Caragana korshinskii). Loessial soil was spiked with crude oil at five pollution levels (0, 0.5, 1, 2, and 4%, w/w). We analyzed plant growth parameters at different stages, soil oxidoreductase activities, and oil degradation rate under different treatments. Results and discussion Soil pollution by oil negatively affected the germination rate, plant height, and biomass of all six species while inhibiting soil dehydrogenase and catalase activities. These inhibitory effects increased with increasing oil pollution level, with 2% and 1% being the critical levels at which plant growth and soil oxidoreductase activities were significantly inhibited, respectively. Both oxidoreductase activities in the rhizosphere soil were significantly higher than those in the bulk soil, which led to a considerable increase in the degradation rate of total petroleum hydrocarbons (TPHs) in the rhizosphere. The plants showed varying remediation effects in the oil-polluted soil. Erect milkvetch and caragana showed potential for remediation of soil below the 0.5% pollution level, alfalfa for soil below the 1% pollution level, and ryegrass, tall fescue, and wheatgrass for soil below the 4% pollution level. The oil pollution level was negatively correlated with plant height, biomass, oxidoreductase activities, and TPH degradation rate for the six plants (p < 0.01), whereas plant biomass was positively correlated with plant height and TPH degradation rate (p < 0.01). Dehydrogenase activity was significantly positively correlated with catalase activity (p < 0.01), while both of them were positively correlated with TPH degradation rate (p < 0.05 and p < 0.01, respectively). Conclusions In conclusion, the six indigenous plants exhibited different tolerances to oil pollution, among which ryegrass, tall fescue, and wheatgrass had the greatest potential for remediation of oil-polluted soil in the loess area.
英文关键词	Oil pollution Phytoremediation Plant biomass Rhizosphere
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000491550500011
WOS关键词	CRUDE-OIL ; METABOLIC-ACTIVITY ; PHYTOREMEDIATION ; BACTERIA ; COLONIZATION ; INOCULATION ; DEGRADATION ; PERFORMANCE ; GREENHOUSE ; SURVIVAL
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
EI主题词	2019-11-01
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310506
作者单位	1.Northwest A&F Univ, Coll Resources & Environm, Yangling 712100, Shaanxi, Peoples R China; 2.Shaanxi Prov Land Engn Construct Grp Co Ltd, Xian 710075, Shaanxi, Peoples R China; 3.Minist Nat Resources, Key Lab Degraded & Unused Land Consolidat Engn, Xian 710075, Shaanxi, Peoples R China; 4.Northwest A&F Univ, Coll Forestry, Ctr Ecol Forecasting & Global Change, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Wei, Yang,Wang, Yiquan,Duan, Min,et al. Growth tolerance and remediation potential of six plants in oil-polluted soil[J]. 西北农林科技大学,2019,19(11):3773-3785.
APA	Wei, Yang,Wang, Yiquan,Duan, Min,Han, Jichang,&Li, Gang.(2019).Growth tolerance and remediation potential of six plants in oil-polluted soil.JOURNAL OF SOILS AND SEDIMENTS,19(11),3773-3785.
MLA	Wei, Yang,et al."Growth tolerance and remediation potential of six plants in oil-polluted soil".JOURNAL OF SOILS AND SEDIMENTS 19.11(2019):3773-3785.