Artificial light at night: an underappreciated effect on phenology of deciduous woody plants.
Artificial light at night: an underappreciated effect on phenology of deciduous woody plants.
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DOI：
10.1093/pnasnexus/pgac046
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发表时间：
2022-05
期刊：
影响因子：
--
通讯作者：
Wang, Yiming
中科院分区：
文献类型：
--
作者：
Meng, Lin;Zhou, Yuyu;Roman, Miguel O.;Stokes, Eleanor C.;Wang, Zhuosen;Asrar, Ghassem R.;Mao, Jiafu;Richardson, Andrew D.;Gu, Lianhong;Wang, Yiming
夜间人工光(Alan)是一种日益增长的人为驱动因素，它广泛存在，并表现出迅速扩张的趋势，对陆地生态系统有潜在的不利影响。然而，由于艾伦的观察有限，对植物物候的影响是否以及在多大程度上影响植物物候--一个影响陆地生态系统过程时间的关键因素--仍未得到探索。在这里，我们使用来自美国国家物候学网络的黑色大理石艾伦产品和物候观测来调查艾伦对美国邻近地区落叶木本植物物候的影响。结果表明：(1)外源物质能显著提前破芽天数(8.9d±6.9d)，推迟叶片着色时间(6.0d±11.9d)；(2)外源物质变化的大小与外源物质的浓度呈显著正相关(P<；0.001)；(3)外源物质与温度之间存在互作效应，但对破芽的影响不显著。我们进一步表明，在未来气候变暖的情景下，艾伦将加速破坏叶芽的进程，但对叶片的着色会产生更复杂的影响。这项研究表明，强化的艾伦可能会在扰乱关键生态系统功能和服务方面产生深远但未被认识到的后果，这需要跨学科的方法来调查。制定照明策略，将艾伦对生态系统的影响降至最低，特别是那些嵌入和环绕主要城市的生态系统，这是具有挑战性的，但必须坚持下去。
Artificial light at night (ALAN), an increasing anthropogenic driver, is widespread and shows rapid expansion with potential adverse impact on the terrestrial ecosystem. However, whether and to what extent does ALAN affect plant phenology, a critical factor influencing the timing of terrestrial ecosystem processes, remains unexplored due to limited ALAN observation. Here, we used the Black Marble ALAN product and phenology observations from USA National Phenology Network to investigate the impact of ALAN on deciduous woody plants phenology in the conterminous United States. We found that (1) ALAN significantly advanced the date of breaking leaf buds by 8.9 ± 6.9 days (mean ± SD) and delayed the coloring of leaves by 6.0 ± 11.9 days on average; (2) the magnitude of phenological changes was significantly correlated with the intensity of ALAN (P < 0.001); and (3) there was an interaction between ALAN and temperature on the coloring of leaves, but not on breaking leaf buds. We further showed that under future climate warming scenarios, ALAN will accelerate the advance in breaking leaf buds but exert a more complex effect on the coloring of leaves. This study suggests intensified ALAN may have far-reaching but underappreciated consequences in disrupting key ecosystem functions and services, which requires an interdisciplinary approach to investigate. Developing lighting strategies that minimize the impact of ALAN on ecosystems, especially those embedded and surrounding major cities, is challenging but must be pursued.
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