A Comparison of Thermal Growing Season Indices for the Northern China during 1961–2015

Figure 3

Differences (days) in the start of the growing season between selected indices in northern China. Shown are the mean values ((a), (c), (e), and (g)) and maximum values ((b), (d), (f), and (h)).

(a) Mean SI 3-SI 1

(b) Maximum SI 3-SI 1

(c) Mean SI 4-SI 2

(d) Maximum SI 4-SI 2

(e) Mean SI 2-SI 1

(f) Maximum SI 2-SI 1

(g) Mean SI 4-SI 3

(h) Maximum SI 4-SI 3