Research Article
A Comparison of Thermal Growing Season Indices for the Northern China during 1961–2015
Figure 9
Average differences (days) in the end of the growing season between EI 1, EI 2, EI 3, and the first autumn/winter frost (FAF) date in northern China during 1961–2015.
| (a) EI 1-FAF |
| (b) EI 2-FAF |
| (c) EI 3-FAF |