两种生态净化措施对水源水库光学环境的影响

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Abstract

Photosynthetic active radiation (PAR) attenuation coefficient, euphotic depth, transparency and related water quality indices were measured in Jinze Reservoir in Shanghai to evaluate the influence of two ecological purification measures, i.e., aquatic plant purification and micro nano aeration, on water optical environment. Results showed that the two ecological purification measures could significantly improve the water optical environment. After aeration, transparency was increased by 20%~25% and euphotic depth by 2.2%~14.8%; PAR attenuation coefficient was decreased by 0.4%~4.4%. After aquatic plant purification, transparency was increased by 20%~29.4% and euphotic depth by 6%~20%; PAR attenuation coefficient was reduced by 17.3%~20.5%. The panel regressions results indicated that the influence mechanism of these two ecological purification measures were different. The water optical environment was improved by the micro nano aeration through control of chlorophyll, dissolved organic matter, temperature and dissolved oxygen, while it was improved by aquatic plants through turbidity control. On the other hand, the two ecological purification measures had no influence on the removal of total nitrogen and dissolved organic matter in winter.

Key words： micro nano aeration aquatic plant purification ecological purification photosynthetic attenuation coefficient aquatic water environment

Received: 14 July 2018

PACS:

X524

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	Articles by authors
	YU Rou-rou
	QIAN Jia-huan
	ZHU Yi-ping
	ZHANG Hai-ping

Cite this article:

YU Rou-rou,QIAN Jia-huan,ZHU Yi-ping等. Influence of two ecological purification measures on water optical environment in a source water reservoir[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(2): 785-791.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I2/785

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