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
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Response of leaf-unfolding dates of woody species to variation of chilling and heat accumulation in warm temperate forests
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图2. 东灵山蒙椴和大花溲疏展叶始期与日低温(A, B, E, F)和热量累积量(C, D, G, H)的偏最小二乘回归分析。图中黑色代表系数显著(变量投影重要性(VIP) ≥0.8)。 |
Fig. 2. Results of Partial Least Squares regression between daily chilling (A, B, E, F) and heat accumulation (C, D, G, H) and leaf-unfolding dates of Tilia mongolica and Deutzia grandiflora in Dongling Mountain. Black bars indicate the coefficients are significant (variable importance in the projection (VIP) ≥0.8). |
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