LI Zhi,WANG Yi,WANG Wen-huai.Effects of Different Water Sources Supply on Water Quality and Zooplankton in Landscape Waters[J].China Water & Wastewater,2021,37(5 5):91-96.
Click Copy

Effects of Different Water Sources Supply on Water Quality and Zooplankton in Landscape Waters

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第37卷 Number: 5 5 Page: 91-96 Column: Date of publication: 2021-03-01
Author(s):
LI Zhi1; 2; 3; WANG Yi1; 2; 3; WANG Wen-huai1; 2; 3
(1. School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China; 2. Shaanxi Key Laboratory of Environmental Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China； 3. Northwest China Key Laboratory of Water Resources and Environment Ecology, Xi’an University of Architecture and Technology, Xi’an 710055, China)
Keywords:
reclaimed water; surface water; landscape water; water quality; zooplankton
Abstract:
Diachronic changes of water quality and zooplankton in Taohua Pool (supplied by reclaimed water) and Xingqing Lake (supplied by surface water) were monitored regularly to explore the effects of different sources on water quality, zooplankton and their correlations. Annual average concentrations of TN, TP, TCOD and Chl-a in Taohua Pool were 4.65 mg/L, 0.22 mg/L, 29.24 mg/L and 92.81 μg/L, respectively, which were 1.95, 2.29, 1.49 and 2.30 times of the corresponding values in Xingqing Lake. The analysis indicated that the increase of TP concentration in Taohua Pool (supplied by reclaimed water) resulted in the increase of phytoplankton algae, and eventually led to the increase of TCOD concentration in the water. Meanwhile, 27 species of Rotifera and Arthropoda were detected in the two water bodies, including 21 Rotifera, 3 Cladocera and 3 Copepoda. Annual average biomass of zooplankton in Taohua Pool was 0.70 mg/L, and the number of zooplankton species, eutrophic indicator species and biomass in the water were larger than those in Xingqing Lake. Furthermore. redundancy analysis (RDA) and Pearson correlation analysis showed that the biomass of Rotifera and Cladocera were strongly correlated with phosphate and TP in both water bodies, and the contribution of algae explosive growth to Cladocera was higher than that to Rotifera. However, Copepoda was not affected obviously by algae explosive growth. In conclusion, TP is the dominant factor affecting zooplankton biomass in water bodies supplied by reclaimed water.
Last Update: 2021-03-01