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[目的]对2010年山城冷冻害的极端性气候特征及对花木的危害进行研究。[方法]利用山城北碚1951～2010年旬平均温度和极端最低温度资料及2008～2010年黄桷兰的侯生长状况与物候观测资料,运用统计分析方法,分析该地区2010年冷冻害在温度与持续时间等方面的极端性以及2010年极端性冷冻害对花木的危害。[结果]2010年冬季冷冻害是山城近60年来连续持续低温时间最长、持续时段内平均温度最低和对花木生长与越冬危害最严重的极端冷冻害,使山城北碚地区原产于热带、亚热带的花木受影响而发生严重灾害。[结论]据此研究采取针对性的防御措施,可减少给花木业主造成的损失。
[Objective] To study the extreme climatic characteristics and harm to flowers and trees in the frozen damage of mountain city in 2010. [Method] Based on the data of average temperature and extreme minimum temperature from 1951 to 2010 in Beibei Mountain and the Hou growth and phenological observation data of Betula platyphylla from 2008 to 2010, statistical analysis was used to analyze the relationship between the temperature and duration of frost damage in 2010 Time and other aspects of the extreme nature of the 2010 freeze and extreme damage to flowers and trees. [Result] Freezing injury in winter 2010 was the most extreme extreme freezing injury of mountain town in the past 60 years, with the longest sustained low temperature in the past 60 years, the lowest average temperature in the continuous period and the most serious damage to the growth and winter wintering of flowers and trees. The Beibei area in mountainous area was native to tropical and subtropical The flowers and trees affected by the serious disaster. [Conclusion] Based on this study, targeted defensive measures can be taken to reduce the losses to the owners of Huayu.