Greening-Induced Biophysical Impacts Lead to Earlier Spring and Autumn Phenology in Temperate and Boreal Forests

IF 7.3 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES Earths Future Pub Date : 2024-11-04 DOI:10.1029/2024EF004618
Jing Guo, Jinmei Wang, Yuxin Qiao, Xu Huang, Nicholas G. Smith, Zhiyong Liu, Rui Zhang, Xiuzhi Chen, Chaoyang Wu, Josep Peñuelas, Lei Chen
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Abstract

Tree phenology, the timing of periodic biological events in trees, is highly sensitive to climate change. Previous studies have indicated that forest greening can impact the local climate by modifying the seasonal surface energy budget. However, the understanding of tree phenological responses to forest greening at large spatial scales remains limited. Utilizing satellite-derived phenological and leaf area index data spanning from 2001 to 2021, herein we show that forest greening led to earlier spring and autumn phenology in both temperate and boreal forests. Our findings demonstrated that forest greening during winter and spring contributed to a reduction in surface albedo, resulting in biophysical warming and consequently advancing spring leaf phenology. Conversely, forest greening in summer and autumn induced biophysical cooling through increased evapotranspiration, leading to an earlier onset of autumn leaf phenology. Our findings highlight the significant impact of forest greening-induced local seasonal climate changes on shaping tree phenology in temperate and boreal forests. It is crucial to consider these greening-induced alterations in microclimate conditions when modeling changes in tree phenology under future climate warming scenarios.

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绿化引起的生物物理影响导致温带和北方森林的春秋季节提前
树木物候,即树木周期性生物活动的时间,对气候变化高度敏感。以往的研究表明,森林绿化可通过改变季节性地表能量预算来影响当地气候。然而,在大空间尺度上,人们对树木物候对森林绿化反应的了解仍然有限。利用从 2001 年到 2021 年的卫星物候和叶面积指数数据,我们在本文中表明,森林绿化导致温带和北方森林的春季和秋季物候提前。我们的研究结果表明,冬季和春季的森林绿化导致地表反照率降低,造成生物物理变暖,从而使春季叶片物候提前。相反,夏季和秋季的森林绿化则通过增加蒸散作用引起生物物理降温,导致秋季叶片物候期提前到来。我们的研究结果凸显了森林绿化引起的当地季节性气候变化对温带和北方森林树木物候形成的重大影响。在模拟未来气候变暖情景下的树木物候变化时,考虑这些绿化引起的小气候条件变化至关重要。
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来源期刊
Earths Future
Earths Future ENVIRONMENTAL SCIENCESGEOSCIENCES, MULTIDI-GEOSCIENCES, MULTIDISCIPLINARY
CiteScore
11.00
自引率
7.30%
发文量
260
审稿时长
16 weeks
期刊介绍: Earth’s Future: A transdisciplinary open access journal, Earth’s Future focuses on the state of the Earth and the prediction of the planet’s future. By publishing peer-reviewed articles as well as editorials, essays, reviews, and commentaries, this journal will be the preeminent scholarly resource on the Anthropocene. It will also help assess the risks and opportunities associated with environmental changes and challenges.
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