Annual variability

Figure 8.2 shows total carbon in vegetation and its allocation among plant parts from a TEM simulation for maize for a site in China for two different years, a wet year (1995) and a dry year (1997). Here we see the substantial difference in carbon accumulation for two different years driven by the different weather conditions. Carbon in each plant part accumulated over the season in

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0.05

1997

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Fig. 8.2. Simulated carbon allocation among major plant parts using the Terrestrial Ecosystem Model (TEM) for maize grown in a north-eastern site in China (117° 12' W 39° 06' N). Actual daily climate data for a wet year (1995) and a dry year (1997) were used.

the dry year is only about half that accumulated in the wet year, with the difference in seed even greater.

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