Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (15): 53-59.doi: 10.11924/j.issn.1000-6850.casb2021-0707

Special Issue: 生物技术

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Biodegradation of Aquatic Plant Residues in Macrophytic Lake: A Review

GAO Yan1,2(), LI Zhifei2,3, LIU Yang2,3, WANG Guangjun2,3, XIE Jun2,3, GUO Zhaoliang1()   

  1. 1College of Life Science and Engineering, Foshan University, Foshan Guangdong 528000
    2Pearl River Fishery Research Institute, Chinese Academy of Fisheries Sciences/Key Laboratory of Tropical & Subtropical Fishery Resource Application and Cultivation, Ministry of Agriculture and Rural Affairs, Guangzhou 510380
    3Guangdong Ecological Remediation of Aquaculture Pollution Research Center, Guangzhou 510380
  • Received:2021-11-15 Revised:2022-03-17 Online:2022-05-25 Published:2022-06-07
  • Contact: GUO Zhaoliang E-mail:1036081902@qq.com;zlguo@fosu.edu.cn

Abstract:

Aquatic higher plants are growing under the stimulation of high nutrients in macrophytic lakes, and the massive growth of aquatic plants can reduce lake nutrient content and improve water transparency in a short time. However, after aquatic plants entering the decay period, their residues could be decomposed and release a large amount of nutrients under the hydraulic and biological action, aggravating the eutrophication of lake water. Subsequently, the residues will be converted into peat and deposited on the bottom of the lake, which causes the rise of lake bottom and the decline of the water level, and accelerates the paludification of lakes. Excessive aquatic plant residues are very likely to pose a threat to aquatic ecological balance. Therefore, this paper introduced the decomposition mechanism of aquatic plant residues in lakes and the influence factors, and explored the application of zoobenthos and microorganisms in the degradation of plant residues. Finally, suggestions were put forward to lay a foundation for the remediation of plant residue decomposition.

Key words: macrophytic lake, plant residue decomposition, eutrophication, paludification, biodegradation, zoobenthos, microorganism

CLC Number: