吉林省蒲公英物候特征及其对气候变暖的响应  

Phenological characteristics of dandelion and its response to climate warming in Jilin province

作　　者：王冬妮[1] 任红玲[1] 郭巧[1] 郭春明[1] 

机构地区：[1]吉林省气象科学研究所,吉林长春130062

出　　处：《气象与环境学报》2010年第2期40-44,共5页Journal of Meteorology and Environment

基　　金：中国气象局沈阳大气环境研究所环境安全研究开放实验室项目"近50年来吉林省气候变化及土地利用/土地覆盖的时空变化"资助

摘　　要：利用数理统计方法,对在气候变暖背景下吉林省蒲公英物候期变化进行分析,探讨了蒲公英物候期变化与春季、秋季气温的关系。结果表明:自1980年以来,吉林省春、秋季增温显著,且秋季较春季明显;吉林省西部地区展叶期推迟,黄枯期提前,生长季缩短;中部地区基本无变化;东部地区展叶期提前,黄枯期推迟,生长季延长。温度和物候期的变化趋势均有明显的地域特征,展叶期变化趋势在地域分布上恰好与春季气温一致,在湿润的东部地区,黄枯期变化趋势与秋季气温一致;在干旱的西部地区,枯黄期变化趋势与秋季气温变化相反。探讨了对东西部地区物候期变化截然相反趋势的原因,并通过线性回归分别建立了各站物候期的温度模型。The phenological changes of dandelion in Jilin province under the background of climate warming were analyzed by the statistics method.The relationships between phenological characteristics of dandelion and air temperature in spring or autumn were discussed.The results indicate that air temperature in spring and autumn is an obvious increase trend since 1980 in Jilin province,especially in autumn.The leave unfolding phase is delayed and the leave coloring phase is advanced,and the growth period is shortened in the west region of Jilin province.The phenological changes are not obvious in the central region of Jilin province.The leave unfolding phase is advanced and the leave coloring phase is delayed,and the growth period is prolonged in the east region of Jilin province.The changes of air temperature and phenology are of obviously regional characteristics.The change trends of the leave unfolding phase and spring air temperature are identical in same region.The change trends of the leave coloring phase and autumn air temperature are consistent in the humid east region of Jilin province,while those are contrary in the dry west region of Jilin province.The reasons of phenological phase changes in the west and east regions are discussed,and air temperature model of phenological phase in each station is established by linear regression method.

关 键 词：蒲公英 物候特征 气候变暖 吉林省 

分 类 号：S58[农业科学—作物学]