【摘要】 以北华大学东校区校园和树木园内16种观赏树木为研究对象,通过两年连续物候观测和记录,分析物候变化特征与气象因子关系,结果表明:16种树种其物候期每年始于3月中下旬,结束于10月中旬,个别树种于11月初结束,大约维持220 d。当空气平均温度为4.0℃、土壤平均温度区为8.0℃时,各树种开始进入萌动期;当空气平均温度为7.3℃、土壤平均温度为12.9℃时,各树种进入展叶期;当空气平均温度为9.1℃、土壤平均温度为15.2℃时,各树种进入开花期;当空气平均温度、土壤平均温度在3.9℃和8.1℃及以下时大部分树种结束落叶进入休眠期。从低纬度引种栽培的大花圆锥绣球各物候期出现较迟,其各物候期活动积温均高于其他树种,而同样是低纬度引种的珍珠绣线菊,各物候期积温与乡土树种近似,物候期也比较早。更多还原

【Abstract】 The relationship of phenological change characteristics and meteorological factor was analyzed through two years continuous phenological observations and record by taking 16 ornamental trees in the north campus of Beihua University and trees park. The result showed that 16 kinds of species whose phenology year began in late mid- March and ended in mid-October,the individual species ended in early November,maintaining 220 days. Each seeds of trees began to enter into germination period when the average temperature of the air and the soil were 4. 0℃ and 8. 0℃. Each seeds of trees began to enter into leaf extension stage when the average temperature of the air and the soil were 7. 3℃ and 12. 9℃. Each seeds of trees began to enter into florescence when the average temperature of the air and the soil were 9. 1℃ and 15. 2℃. Most of seeds of trees ended leaf fall period and entered into period of dormancy when the average temperature of the air and the soil were 3. 9℃ and 8. 1℃ and below this. Each phenological phase of Hydrangea paniculata Sieb. var. grandiflora Sieb.which was introduced from low latitude appeared more later. The active accumulated temperature of each phenological phase was all higher than other species. The Spiraea thunbergii whose active accumulated temperature of each phenological phase was similar to the native trees and the phenological phase was early was also introduced from low latitude.更多还原