浙江古田山亚热带常绿阔叶林开花物候：气候因素、系统发育关系和功能性状的影响  

Influence of climate, phylogeny, and functional traits on flowering phenology in a subtropical evergreen broad-leaved forest, East China

作　　者：胡小丽[1,3] 张杨家豪 米湘成[3] 杜彦君[3] 常朝阳[1] 

机构地区：[1]西北农林科技大学生命科学学院,陕西杨凌712100 [2]台湾东海大学生命科学系,中国台湾台中40704 [3]中国科学院植物研究所植被与环境变化国家重点实验室,北京100093

出　　处：《生物多样性》2015年第5期601-609,共9页Biodiversity Science

基　　金：国家自然科学基金(Y32H3A1001);科技部国家标本资源共享平台项目(Y5217G1001)

摘　　要：植物的开花物候受气候因素、植物系统发育关系和功能性状的影响。然而当前植物开花物候研究中未见同时考虑这3个因素的报道。为了解它们相互之间的影响,本研究利用中国东部地区浙江省古田山国家级自然保护区亚热带常绿阔叶林24 ha大样地(GTS;118°03′50′′–118°11′12.2′′E,29°10′19′′–29°17′41′′N)设置的130个种子雨收集器5年的开花数据检验这3个因素对开花的影响。结果表明,古田山植物的开花高峰期集中在5月,群落开花格局明显受温度和降雨的影响。利用植物DNA条形码数据研究发现,植物间系统发育关系对古田山植物开花时间有显著影响,亲缘关系近的物种开花时间更相近。植物的平均开花时间受最大树高的影响,但不受传粉方式、花色、种子质量和扩散方式的影响。该研究结果说明气候因素、植物系统发育关系和功能性状都可能影响植物开花物候格局,同时考虑这3个因素能够帮助我们更好地理解开花物候格局。The flowering phenology of plants is influenced by climatic, phylogenetic and functional constraints. To our knowledge, this is the first study to examine the influence of these three factors on flowering phenology simultaneously. In order to investigate the relative impact of each of the three factors, we tested their importance in describing five-year of flowering data using 130 seed traps in a 24 ha plot in the Gutianshan forest in eastern China. Flowering of the subtropical evergreen forest peaked in May. The community flowering pattern was significantly correlated with climatic variables including temperature and rainfall. According to DNA barcoding data, closely related species had similar flowering dates. The mean flowering dates were also associated with maximum tree height, but not with pollinator mode, flower color, seed mass and dispersal mode. DNA barcoding data for testing phylogenetic constraint is strongly recommended in future studies. Our findings also suggest that climatic variables, phylogeny, and functional traits were associated with the community flowering pattern. Simultaneously considering these three factors will enhance our understanding of plant phenological patterns.

关 键 词：气候 功能性状 古田山 开花物候 系统发育保守性 

分 类 号：S718.5[农业科学—林学]