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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 affected by climate factors, phylogenetic relationships and functional traits. However, there are no reports of these three factors in the current research on flowering phenology. In order to understand their mutual influence, this study used the 24 ha large sample of subtropical evergreen broad-leaved forests (GTS; 118 ° 03’50 "- 118 ° 11 ’) in the Gutian Mountain National Nature Reserve in eastern China. Flowering data of 130 seed rain collectors set at 12.2’E, 29’10’19’-29’17’41’’N were used to test the effect of these three factors on flowering. The results showed that the flowering peak of Gutian Mountain was concentrated in May and the flowering pattern of the community was obviously affected by temperature and rainfall. Using plant DNA barcode data, it was found that the phylogenetic relationship among plants had a significant effect on the flowering time of Gutianshan plants, and closer relatives had more similar flowering time. The average flowering time of plants is affected by the maximum tree height, but not by the way of pollination, the color, the quality of seeds and the way of spreading. The results of this study indicate that climatic factors, plant phylogenetic relationships and functional traits may affect plant flowering phenology. Taking into account these three factors helps us to better understand the flowering phenology pattern.