雁山楝树物候对气候变暖的响应  

Ecological Response of Yanshan Chinaberry Treeon Climate Warming

作　　者：夏小曼[1] 李耀先[2] 符合[3] 谢少凤[2] 李莉[3] 

机构地区：[1]广西气象信息中心,广西南宁530022 [2]广西气象局,广西南宁545100 [3]广西气象减灾研究所,广西南宁535000

出　　处：《气象研究与应用》2010年第3期30-34,49,共6页Journal of Meteorological Research and Application

摘　　要：对桂北地区雁山气温等气候要素与楝树5个物候期的多年同步观测资料的对比分析,结果表明:(1)桂林雁山近34a来年平均气温呈显著上升趋势,特别是1997年以来增温特明显,在增温过程中以春季增温为主,冬季和秋季增温次之,夏季呈弱降温趋势;(2)近10a来雁山楝树展叶盛期、开花盛期表现为一致的提前趋势,叶全变色期和落叶始期表现推迟的趋势,整个绿叶期延长,果成熟期表现推迟;(3)2月平均气温(T2)和1～3月均温(T1-3)是影响楝树展叶盛期、开花盛期的主要气候因子;(4)楝树物候变化是植物对气候变暖的响应。Basing the comparative analysis of the climate factors such as temperature in northern Guangxi-Yanshan area and chinaberry tree phenology 5 years of simultaneous observations,results show that 1） The average temperature of Yanshan areas rise significantly in near 34a,especially since 1997,warming mainly in spring,winter and autumn followed,while the average temperature in summer show a weak cooling trend.2） Yanshan chinaberry tree leaf unfolding prime,flower stage（the whole leaf discoloration and defoliation） showed the same trend in advance（delayed star） in near 10a,and the green leaves（fruit maturity） extended（delayed）.3） The mean temperature that in Feb.（T2） and that from Jan.to Mar.（T1-3） are the main climatic factors impacting chinaberry tree leaf unfolding prime and flower stage.4） chinaberry tree phenological changes is in response to climate warming.

关 键 词：楝树物候 气候变化 生态响应 

分 类 号：S16[农业科学—农业气象学]