石油与食细菌线虫对土壤温室气体排放的影响

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Abstract

A laboratory experiment was set up to explore the influences of oil pollution and bacterial-feeding nematodes greenhouse gas emissions and soil microbial activities. There were 5 treatments in this experiment:soil (S) as the control,5.0g/kg oil contaminated soil (SP),5.0g/kg oil contaminated soil + 5 nematodes/g dry soil (SPN5),5.0g/kg oil contaminated soil + 10nematodes/g dry soil (SPN10),5.0g/kg oil contaminated soil + 20 nematodes/g dry soil (SPN20). Compared with the control, the emissions of CO₂, N₂O increased by 7.03~10.16 times, 11.56~32.19 times respectively in oil contaminated soil, and the emission of CH₄ wasn't impacted obviously. The oil pollution has seriously aggravated the greenhouse effect judging by the dynamic of global warming potential (GWP), and greenhouse effect has increased by 7.13~10.17times compared with the control. Oil pollution and bacterial-feeding nematodes increased microbial biomass carbon and metabolic entropy (qCO₂) to a certain extent, with the microbial biomass carbon increasing at first and then decreasing. Compared with the control, the metabolic entropy of other treatments was about 6.59~9.83 times higher. The fluorescein diacetate (FDA) hydrolysis activity was inhibited before being enhanced in oil contaminated soil. While the activities of soil invertase and urease were enhanced in oil contaminated soil. To some extent, the bacterial-feeding nematodes can promote soil enzyme activity, and affect the emissions of greenhouse gases, CO₂, N₂O, and CH₄.

Key words： oil pollution bacterial-feeding nematodes soil greenhouse gases soil microbial activity

Received: 28 December 2016

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X53

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	Articles by authors
	ZHOU Ji-Hai
	TANG Jia-Jie
	YUAN Ying-Hong
	HUANG Rong-Xia
	CHENG Kun
	WU Xue-Yan
	YUAN Dong-Dong
	FAN Hou-Bao

Cite this article:

ZHOU Ji-Hai,TANG Jia-Jie,YUAN Ying-Hong等. The influences of oil contamination and bacterial-feeding nematodes on greenhouse gas emissions[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(9): 3497-3505.

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http://manu36.magtech.com.cn/Jweb_zghjkx/EN/ OR http://manu36.magtech.com.cn/Jweb_zghjkx/EN/Y2017/V37/I9/3497

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