暖温带森林木本植物展叶始期对低温和热量累积变化的响应
于海英(
), 杨莉琳, 付素静, 张志敏, 姚琦馥
), 杨莉琳, 付素静, 张志敏, 姚琦馥
Response of leaf-unfolding dates of woody species to variation of chilling and heat accumulation in warm temperate forests
YU Hai-Ying(), YANG Li-Lin, FU Su-Jing, ZHANG Zhi-Min, YAO Qi-Fu
), YANG Li-Lin, FU Su-Jing, ZHANG Zhi-Min, YAO Qi-Fu
图3. 东灵山25种木本植物展叶始期与低温和热量累积期内平均气温及低温和热量累积量的回归系数。A, 低温累积期平均气温。B, 热量累积期平均气温。C, 低温累积量。D, 热量累积量。图中灰色代表回归系数显著(p < 0.05), 白色代表回归系数不显著。CP, 冷激份额; GDH, 生长度小时。
Fig. 3. Regression coefficients between mean temperature, chilling and heat accumulation and leaf-unfolding dates during chilling and forcing periods for 25 woody species in Dongling Mountain. A, Mean temperature during chilling period. B, Mean temperature during forcing period. C, Chilling accumulation. D, Heat accumulation. Grey bars indicate regression coefficients are significant (p < 0.05), and white bars indicate regression coefficients are insignificant.CP, chilling portion; GDH, growing degree hour.
