The temporal mean green-up dates (DOY) for <i>Q</i>. <i>mongolica</i> in Northeast China during 1962–2012.

<p>(A) The spatial distribution of mean green-up dates over 33 weather stations; (B) the frequency distribution of green-up dates; and (C) the relationship between the green-up date and latitude. Note: the numbers in (A) indicate the green-up dates (DOY) at each weather station.</p>