Seasonal/Interannual Variations of Carbon Sequestration and Carbon Emission in a Warm-Season Perennial Grassland

Figure 6

Variations of soil carbon emission with the changes of above-ground green biomass in (a) 2007, (b) 2008, (c) 2009, and (d) 2010 growing season.

(a)

(b)

(c)

(d)