A general parameterized mathematical food web model that predicts a stable green world in the terrestrial ecosystem

Terrestrial ecosystems are generally green and only a small part ( >eh, and Phc>Pcc >0,which are well-realized in above-ground terrestrial ecosystems where plant-rich "green world" is common. The h and c calculated from our model showed good agreement with those from empirical observations in forests, where both h and c are ca. 100 mg (fresh biomass/m2), and in savannahs. The model predicts that the nutritive values and digestibility of plants are positively correlated with h and the intensity of herbivory, which theoretically explains the out-door defensive effects of the anti-nutritive or quantitative defenses (e.g., tannins, protease inhibitors) of plants, and predicts that c and c/h are positively correlated with the relative growth rate of herbivores. The present model introduced parameterized realities into food web theory.