石家庄市彩叶树种资源和物候观赏特征研究
The Color Leaved Tree Species Resources and Phenological Ornamental Characteristics in Shijiazhuang

对石家庄市彩叶树木种类、物候观赏特征和园林应用情况进行了系统调查。结果表明，石家庄市彩叶树种资源分属29 科66种，其中春色叶树种12种，占18.2%，秋色叶树种30种，占45.4%；常色叶树种24种，占36.4%。春色叶树种叶片最佳观赏期一般20 d左右，秋色叶树种叶片最佳观赏期一般30~50 d，常色叶树种最佳观赏期最长，均在180 d以上。在调查的基础上，分析了石家庄市彩叶树木的应用现状以及存在问题，有针对性地提出了解决方法。
An investigation was carried out on the city color-leaved tree species, phenological ornamental characteristics and landscape application in Shijiazhuang, capital to Hebei Province. The results showed that there existed 66 color-leaved tree species belonging to 29 families in Shijiazhuang, including 12 spring leaf tree species, accounting for 18.2%, 30 autumn leaf tree species accounting for 45.4%; and 24 kinds of common color-leaved tree species, accounting for 36.4%. The best ornamental period of spring color-leaved tree species was about 20 days, and the autumn leaf tree species lasted for about 30 to 50 days commonly; the common color-leaved tree species presented the longest ornamental period, about 180 days. Based on the investigation, the application status and existing problems of color foliage trees in Shijiazhuang plantscape were discussed and the solutions were performed