Research Article
A Comparison of Thermal Growing Season Indices for the Northern China during 1961–2015
Figure 2
Correlation coefficients for combinations of the start indices of growing season in northern China.
(a) SI 1 versus SI 2 |
(b) SI 1 versus SI 3 |
(c) SI 2 versus SI 3 |
(d) SI 3 versus SI 4 |