典型的亚热带景观灌木的生理反应在夜间的人工光对人造光
Shi-Yi Shen1, Jian-Wu Wang2, Tian-Huan Zhou2
1State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China.
Ying yong sheng tai xue bao = The journal of applied ecology
|October 29, 2023
概括
夜间的人工光显著影响景观植物,增加抗氧化酶活性和生物质. 不同的植物物种对光质和强度的耐受程度和反应各不相同,有些植物表现出高达40lx的弹性.
科学领域:
- 环境科学 环境科学
- 植物生理学 植物生理学
- 生态生态学 生态生态学
背景情况:
- 夜间人工照明 (ALAN) 是一个日益增长的全球变化因素.
- 研究了ALAN的生态影响,但对植物生理反应的理解较少.
- 量化ALAN对景观植物的影响对于城市生态学至关重要.
研究的目的:
- 为了研究三个常见的景观灌木对ALAN的生理反应.
- 检查不同光质 (黄色,白色) 和强度对抗氧化酶系统和生物质的影响.
- 确定特定物种的耐受性值和针对ALAN的防御机制.
主要方法:
- 三种亚热带景观灌木 (Hydrangea paniculata,Photinia fraseri,Ligustrum japonicum) 被暴露在不同的ALAN条件下 (20,40,60 lx;黄色和白色光).
- 测量包括抗氧化酶活性 (POD,CAT),胺含量和生物质.
- 分析的重点是剂量依赖的反应和特定物种的变异.
主要成果:
- 在所有物种中,ALAN显著增加了膜过氧化和抗氧化酶活性.
- 观察到特定物种对光质的反应;在白光下,Horangea paniculata显示出更高的POD和CAT,而Photinia fraseri显示出轻微的增加.
- 抗氧化酶活性随着光强度的增加而增加,达到一个值 (大约. 40 lx),超出这个值,甲的含量增加,酶活性降低. 在ALAN.下,生物质总体上增加了.
- 荷兰花是最敏感的,日本是最耐药的. 耐受性因光质和植物类型 (落叶植物与常青植物) 而有所不同.
结论:
- 阿兰在景观植物中诱导氧化应激,触发抗氧化剂防御机制.
- 植物对ALAN的反应是特定于物种的,受光质,强度和植物现象学 (落叶/常青) 的影响.
- 了解这些反应对于管理城市植被和减轻ALAN的生态影响至关重要.
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