Water Quality and Microbial Community in the Context of Ecological Restoration: A Case Study of the Yongding River, Beijing, China

Jie Li, Yujiao Sun (), Xiaoyue Zhang, Chengzhong Pan, Shurong Zhang () and Binghui Zheng
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Jie Li: College of Water Sciences, Beijing Normal University, Beijing 100875, China
Yujiao Sun: College of Water Sciences, Beijing Normal University, Beijing 100875, China
Xiaoyue Zhang: College of Water Sciences, Beijing Normal University, Beijing 100875, China
Chengzhong Pan: College of Water Sciences, Beijing Normal University, Beijing 100875, China
Shurong Zhang: State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
Binghui Zheng: National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China

IJERPH, 2022, vol. 19, issue 20, 1-12

Abstract: Ecological water replenishment via interbasin water diversion projects provides opportunities for ecological river restoration. Untangling water quality changes, microbiota dynamics, and community functions is necessary for sustainable ecological management. Using the Yongding River as a case study, we monitored the water quality and applied genomic sequencing to investigate microbial communities of the river in different stages after ecological water replenishment. Our results showed that river water quality represented by chemical oxygen demand (COD), total nitrogen (TN), and chlorophyll-a (Chl-a) did not change significantly during months after water replenishment. The bacterial community composition varied in different months and river subsections. The Cyanobium _PCC-6307, CL500-29 marine group, and Pseudomonas were dominant in the later stages after water replenishment. Water temperature, pH, and nutrient levels significantly affected the microbial community composition, and ecological restoration may have the potential to influence nitrogen cycling in the river. Our results can provide ecological insights into sustainable water quality maintenance and river management following ecological restoration enabled by ecological water replenishment.

Keywords: ecological restoration; water quality; microbial community; Yongding River (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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