Impact of urban warming on earlier spring flowering in Korea
Impact of urban warming on earlier spring flowering in Korea
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DOI：
10.1002/joc.2178
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发表时间：
2011-08-01
期刊：
影响因子：
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通讯作者：
Choi, Yong-Sang
中科院分区：
文献类型：
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作者：
Jeong, Jee-Hoon;Ho, Chang-Hoi;Choi, Yong-Sang
使用长期（1954-2004年）的观察，在韩国的四个选定的物种：金钟（连翘），杜鹃花（杜鹃花mucronulatum），樱桃（樱桃yedoensis），桃（桃桃），城市变暖对春季开花的影响进行了研究。在9个不同城市化程度的城市中，交叉比较了4种植物的早春温度和初花期的变化趋势。人们清楚地观察到，近几十年来，城市变暖导致首次开花的时间提前了几天到几周，而植物感知热能的内在生理学并没有改变。据观察，发展筹资的进展程度大致与城市化程度成正比。此外，FFD对城市变暖的敏感性估计为灌木物种（金钟和杜鹃花分别为-9.07和-6.64天摄氏度（-1））高于树种（桃和樱桃分别为-2.46和-2.90天摄氏度（-1））。我们的研究结果表明，城市变暖的影响应被视为一个有影响力的因素，驱动区域自然环境的变化，特别是在快速城市化的地区。版权所有（C）2010皇家气象学会
Using long-term (1954-2004) observations of four selected species in South Korea: goldenbell (Forsythia koreana), azalea (Rhododendron mucronulatum), cherry (Prunus yedoensis), and peach (Prunus persica), the impact of urban warming on spring flowering was investigated. Trends of early spring temperatures and first-flowering dates (FFDs) of the four plants were cross-compared among nine differently urbanized cities. It was clearly observed that urban warming has led to an advance in the timing of first-flowering of several days to weeks during recent decades, while the intrinsic physiology of plants to sense thermal energy has not been changed. The degree of advancement of the FFD was observed to be roughly proportional to degree of urbanization. Moreover, the sensitivity of the FFD to urban warming was estimated to be higher for the shrub species (-9.07 and -6.64 days degrees C(-1) for goldenbell and azalea, respectively) than the tree species (-2.46 and -2.90 days degrees C(-1) for peach and cherry, respectively). Our results suggest that the impact of urban warming should be considered as an influential factor which drives changes in the regional natural environment, especially in regions of rapid urbanization. Copyright (C) 2010 Royal Meteorological Society