两种植物条件下土壤中矿物油和多环芳烃(PAHs)的生物修复研究

应用生态学报 ›› 2001, Vol. ›› Issue (1): 108-112.

两种植物条件下土壤中矿物油和多环芳烃(PAHs)的生物修复研究

宋玉芳, 许华夏, 任丽萍

中国科学院沈阳应用生态研究所陆地生态过程开放研究实验室, 沈阳110016

收稿日期:2000-06-02 修回日期:2000-08-04 出版日期:2001-01-25
通讯作者: 宋玉芳,女,1954年生,副研究员,主要从事污染生态学研究,发表论文20余篇.E-mail:songyufang@hotmail.com
基金资助:
中国科学院污染生态化学百人计划及知识创新工程资助项目;中国科学院沈阳生态实验站基金资助项目(KZCX2-401)

Bioremediation of mineral oil and polycyclic aromatic hydrocarbons (PAHs) in soils with two plant species

SONG Yufang, XU Huaxia, REN Liping

Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016

Received:2000-06-02 Revised:2000-08-04 Online:2001-01-25

摘要/Abstract

摘要： 选择苜蓿草和水稻为供试植物,以污染物水平、有机肥、专性细菌和真菌为调控因子,进行土壤中矿物油和PAHs的生物修复研究.结果表明,投肥对苜蓿草土壤中矿物油降解有促进作用,但对水稻土壤中矿物油降解无明显作用.投肥均使苜蓿草和水稻土壤中多环芳烃总量(11种列于美国EPA黑名单上的多环芳烃)降解率提高,这一降解促进效果在水稻土壤中好于苜蓿草土壤.有机肥量与苜蓿草根际土著真菌、细菌数量明显呈正相关,但仅与水稻根际土著细菌数量呈明显正相关.两种土壤中实测真菌和细菌总数均与试验投加专性真菌和细菌量无关.水稻土和苜蓿草土壤中3环多环芳烃的降解随投肥量增大而降解率提高,其在水稻土壤中的效果好于苜蓿草土壤.投肥对4环多环芳烃的降解并未产生有效作用.

Abstract: With alfalfa(Medicago sativa), paddy rice as test plants,and with pollutant level,specific bacteria,fungi, orga nic fertilizer as control factors,the bioremediation of mineral oil, polycyclic aromatic hydrocarbons (PAHs) in soils with two plant species was conducted.The results showed that the degradation rate of mineral oil was promoted by fertilization in alfalfa soil,but not in paddy rice soil.The degradation rate of total PAHs (11 PAH listed in USEPA) was increased by fertilization both in alfalfa, in paddy rice soil,and the promotion effect of fertilizer was better in paddy rice soil than in alfalfa soil.The fertilization rate was positively related to the rhizospheric indigenous fungi, bacteria's CFU in affalfa soil,but only to the indigenous bacteria's CFU in paddy rice soil.The fungi, bacteria's CFU in both test soils had no positive relation with the amount of specific bacteria, fungi spiked.The degradation rate of 3 ring PAHs was inhanced in both alfalfa, paddy rice soil by fertilization,and the effect was stronger in paddy rice soil than in alfalfa soil.However,fertilization had no positive effect on the degradation of 4-ring PAHs.

中图分类号:

X131.3

宋玉芳, 许华夏, 任丽萍. 两种植物条件下土壤中矿物油和多环芳烃(PAHs)的生物修复研究[J]. 应用生态学报, 2001, (1): 108-112.

SONG Yufang, XU Huaxia, REN Liping . Bioremediation of mineral oil and polycyclic aromatic hydrocarbons (PAHs) in soils with two plant species[J]. Chinese Journal of Applied Ecology, 2001, (1): 108-112.

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