Fig. 5: Varying effects of ALAN and Ta on phenology across climate zones.
From: Artificial light at night outweighs temperature in lengthening urban growing seasons
a, The spatial distribution of study cities classified by the Köppen climate zones. The inserted bar plot represents the number of cities in each climate zone. b,c, Box plots showing the partial correlation coefficients (R) of ALAN and Ta for seven climate zones for SOS (b) and EOS (c) across 427 cities from 2014 to 2020, as climate zones with fewer than ten cities are excluded (Methods). The middle solid line indicates the median partial coefficients of ALAN (in purple) and Ta (in orange) in each group. The bottom bounds indicate the 25th quantile and the top bounds indicate the 75th quantile for each box. The lower whisker represents the minimum, and the upper whisker represents the maximum. The black dots indicate the significant difference between RALAN and RTa in each group using a two-sided t-test. *P < 0.05, **P < 0.01.
