气候变化对武汉木本植物物候期的影响

根据中国物候观测网武汉观测站的物候和气温、降水资料,分析了武汉市25种木本植物春季展叶期、始花期和盛花期,秋季落叶期等4个关键物候期的变化趋势、对气候变化的阶段响应特点及气温、降水变化的关系。结果表明:1963年以来,武汉地区气温呈显著上升趋势。春季物候期的早晚主要受春季气温的影响,特别是春季物候期发生当月和上1月的平均气温对物候期的影响很大。秋季物候期受秋季气温的影响,特别是物候发生当月的温度。叶子的物候期与前1月的降水量有较为明显的关系,但是花的物候期和降水的关系不明显。

Effect of Climate Change on Woody Plants Phenophase in Wuhan City

According to phenology,temperature,precipitation data of wuhan observation station of chinese phenological observation network,the authors analyzed change trend in four key phenophases of leaf-expansion period,initial time of flowering,full-bloom stage in spring and defoliation period in autumn of 25 woody plants,their stage response features to climate change and their relationship with temperature,precipitation change.The results showed that the temperature has risen significantly in wuhan city since 1963,and phenophase was affected by temperature in spring,especially by average temperature in spring and January.Phenophase in autumn was affected by temperature,especially by phenological temperature.The phenophase of leaves were related to precipitation of previous month,and floral phenophase were not obviously related to precipitation.