Fig. 3: Changes in plant productivity in years with shortened snow cover duration.
a, b Spatial distributions of changes in GPP (ΔGPP) and NDVI (ΔNDVI) for every 10-day shortened snow cover duration compared to the long-term mean. Black points indicate the significant changes (p < 0.05). The horizontal axis of the color legend is ΔTsoil, and the vertical axis of the color legend is ΔNDVI and ΔGPP. In this legend, the green color indicates ΔNDVI and ΔGPP are positive, and ΔTsoil is positive; the yellow color indicates ΔNDVI and ΔGPP are negative, and ΔTsoil is negative; the blue color indicates ΔNDVI and ΔGPP are negative, and ΔTsoil is positive; the red color indicates ΔNDVI and ΔGPP are positive, and ΔTsoil is negative. c The relative frequency (%) distribution of ΔNDVI and ΔGPP is significant negative (Neg*), significant positive (Pos*), non-significant negative (Neg), non-significant positive (Pos), sum of the relative frequency of the significant and non-significant positive (T_Pos), and the sum of the relative frequency of the significant and non-significant negative (T_Neg). d Density distributions of NDVI and GPP between warm soil and cold soil regions in years with shortened snow cover duration only (“Shortened snow cover duration”) and in combination with normal climates (“Shortened snow cover duration +Climate normal”). The extent of the density distributions indicates the 25th and 75th percentiles, and the dots in the violins and black lines in the boxes indicate the median of ΔNDVI and ΔGPP for every 10-day shortened snow cover duration.
