The Relationship between Flowering Dates of several Woody Plants and Air Temperature

To look into relationship between some xylophyte species blooming time and temperature, this study was researched blooming time of year 2010 and 2011 and investigated the correlation between blooming time and temperature. The species with low blooming time, year day index and warmth index bloomed early. Warmth index was calculated in two ways, TN and TL. The result of correlation between blooming time and temperature showed that the species that bloom in spring had positive correlation between blooming time and temperature while purple bloom maple had no correlation between the two. More climate data and monitoring data are necessary for comparative analysis on correlation between blooming time and temperature.