Jan
Feb
Mar
Apr
May
191
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Boreal evergreen needleleaf tree
Boreal summergreen broadleaf tree
C3 grass
Flood-tolerant graminoid
Peatmoss
-20
0
20
-100
-75
-50
-25
0
25
50
75
0
25
50
75
100
125
150
Soil temperature (°C)
Soil
depth
(cm)
Monthly NPP
(gC/m
2
)
(c) Canada, 60.75°N 239.75°E