陆地环境空间在全球范围内受到夜间人工光的侵蚀
Daniel T C Cox1, Kevin J Gaston1
1Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall TR10 9FE, UK.
The Science of the total environment
|August 31, 2023
概括
夜间的人工光 (ALAN) 显著影响全球生态系统. 大多数夜间环境都受到ALAN的影响,迅速扩散到热带地区,突显了减少和缓解努力的迫切需要.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 保护生物学 保护生物学
背景情况:
- 夜间的人工光 (ALAN) 破坏自然光周期,影响从细菌到动物的生物,影响生态系统功能.
- 之前的研究推断ALAN的全球影响主要来自其地理分布.
- 了解ALAN在环境空间中的分布以及自然光周期的损失至关重要.
研究的目的:
- 将ALAN在陆地环境空间中的分布映射出来.
- 从2012年到2022年量化ALAN环境足迹的扩张.
- 评估未受ALAN和skyglow影响的剩余环境空间.
主要方法:
- 在1.61 x 1.21公里分辨率下对四个生物气候变量进行排序,以定义夜间环境空间.
- 使用黑大理石夜间灯产品来识别和跟踪直接的ALAN排放.
- 使用"世界人工天空亮度地图"来确定ALAN对太空环境的影响.
主要成果:
- 到2012年,直接的ALAN排放占了潜在夜间环境条件的71.9%,不成比例地影响温带地区和改造息地.
- 在2012年至2022年期间,ALAN主要扩展到现有受影响地区,热带环境的显著增长.
- 考虑到skyglow,只有13.2%的环境空间保留了自然光周期.
结论:
- 保护自然光周期的机会正在迅速减少.
- 紧急去除,减少和改善ALAN至关重要,特别是在已经广泛蔓延的地区.
- 缓解ALAN对于保护生物多样性和生态系统完整性至关重要.
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