756242.fig.002a
(a)
756242.fig.002b
(b)
756242.fig.002c
(c)
756242.fig.002d
(d)
Figure 2: Monthly-average time series for: (a) SWC and (b) NPP and associated kernel density distributions for monthly averages of: (c) SWC; (d) NPP based on 1980–2006 records for humid-continental and continental, and 1980–2003 for cold semiarid climate agricultural sites.