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4. 东灵山灌木和乔木的展叶始期及其对气候变暖响应的差异比较(平均值±标准差)。H, 展叶始期与热量累积期平均气温的回归系数。I, 展叶始期与热量累积量的回归系数。DOY, 年序日。CP, 冷激份额; GDH, 生长度小时。
Fig. 4. Difference between leaf-unfolding dates of shrubs and trees and their responses to climate warming in Dongling Mountain (mean ± SD). H, Regression coefficients between leaf-unfolding dates and mean temperature during forcing period. I, Regression coefficients between leaf-unfolding dates and heat accumulation. DOY, day of the year. CP, chilling portion; GDH, growing degree hour.
