Influence of night-time light pollution on the photosynthesis and physiological characteristics of the urban plants Euonymus japonicus and Rosa hybrida

Ecological Processes

Research

Zhen Li¹  Dan Hu²  Yaxi Wei³  Jiaolong Zhang³ 

[1] State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, 100038, Beijing, China;Department of Water Ecology and Environment, China Institute of Water Resources and Hydropower Research, 100038, Beijing, China;State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China;State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China;University of Chinese Academy of Sciences, 100049, Beijing, China;

关键词: Light pollution;    Urban plant;    Spectra;    Photosynthetic parameter;    Physiological characteristics;   

DOI  :  10.1186/s13717-023-00449-6

 received in 2023-04-02, accepted in 2023-07-24,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundNight-time light pollution (NLP), which breaks the natural cycle of day and night, has become a new threat to urban ecosystems. Plants are the main component of urban ecosystems and play an irreplaceable role in maintaining urban ecological balance. The effects of NLP with various radiation sources, including green, white, blue and red light provided by light-emitting diodes, on urban plants, Euonymus japonicus and Rosa hybrida, were examined in a block field experiment.ResultsNLP caused photoinhibition and oxidative stress in plants, and the extent of the deleterious effects varied with the spectral distribution of artificial light sources and species. Both E. japonicus and R. hybrida were more sensitive to blue and red light, which reduced the pigment concentration, net photosynthetic rate, stomatal limit value, effective quantum yield, apparent electron transfer rate and photochemical quenching coefficient, and markedly increased the malondialdehyde content and total antioxidant capacity. However, those negative effects under white light were only present in E. japonicus and not in R. hybrida. Furthermore, blue and red light significantly decreased the stomatal conductance of E. japonicus. In contrast, green light had no significant effect on the above indices for both species. All spectra did not significantly change the sugars and starch contents for either species.ConclusionsConsidering that the spectral distribution of artificial light at night in cities has great heterogeneity and that its effect varies with plant species, it is important to arrange tree species with NLP tolerance and install appropriate light sources in urban areas based on the corresponding physiological responses and adaptation of urban trees.

【 授权许可】

CC BY   
© Institute of Applied Ecology, CAS and Springer-Verlag GmbH, DE 2023

【 图 表 】

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