Evaluations of global warming influence on the biological circle at the forest ecosystems of the Zhiguly low-mountain range

The gradient (ordination) analysis was used to establish the predicted changes in the two branches of small biological cycle, production and detritus, in broad-leaved, mixed, and light-coniferous forests of the forest-steppe zonal ecotone. The general model scheme describes the driving forces of climatogenic successions - the fundamental mechanism of transition from functional changes to structural transformation of ecosystems under the effect of global warming.