CO<sub>2</sub>升高对三角梅吸收Cd和佳乐麝香及根际的影响

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Abstract

The study selected the ornamental plant remediation system as the study object, discussed the effects of the elevated CO₂ on the Cd and HHCB accumulation efficiency by Bougainvillea spectabilis, and analysed the ecological function by detecting the rhizosphere bacteria number, enzymatic activity, and organic carbon. Results showed that the combined Cd and HHCB contamination under elevated CO₂ showed no obvious inhibition function to the growth of the plant. Especially the elevated CO₂ treatments (750μL/L) significantly facilitated the plant growth and contaminant accumulation, furthermore, the rhizosphere bacteria number reached the maximum. Urea enzymes activity showed significant difference under the different treatments. The addition of HHCB and the elevated CO₂ facilitated the organic carbon in the rhizospheric soil. In summary, Bougainvillea spectabilis has potential to be used for remediating the combined Cd and HHCB contaminated soil remediation under elevated CO₂.

Key words： elevated CO₂ phytoremediation Bougainvillea glabra galaxolide rhizosphere effect

Received: 27 March 2018

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	LI Jia-xin
	ZHANG Min-zhe
	LIU Jia-nv
	ZHOU Qi-xing

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LI Jia-xin,ZHANG Min-zhe,LIU Jia-nv等. The effects of elevated CO₂ on Cd and HHCB accumulation by Bougainvillea spectabilis and its rhizosphere system[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(10): 3880-3888.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I10/3880

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