《Table 3 Statistics on the shifting trend in the spring phenophase of eight typical deciduous broad-

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《中国8种暖温带木本植物展叶及开花始期数据集（1963–2015）》

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The FFD of the eight plants from 1963 to 2015 is shown in Figure 3.According to the spatial distribution pattern，for all species，the latitudinal differentiation of the FFD was less than that of the LUD.Albizia julibrissin（Figure 3d）and Cercis chinensis（Figure 3h）showed little spatial difference，whereas the other species showed distinct differences.In terms of temporal distribution，the sequence of the FFD for each species in the same area varied.Ulmus pumila（Figure 3f）and Armeniaca vulgaris（Figure 3g）had the earliest FFD，whereas Robinia pseudoacacia and Albizia julibrissin had the latest FFD.A linear regression between FFD and year was used to determine the trend of FFD.The results of trend analysis indicated that the FFD of the eight woody plants in China was also earlier in the past 50 years，with an average advance of 0.7–3.3 days per decade.In the grid scale，the FFD in 77.1%–97.7%of the cells were advanced，whereas in 32.5%–79.7%of the cells the advance was significant（P<0.05）.