Voronej, Voronezh, Russian Federation
UDK 630 Лесное хозяйство. Лесоводство
Exergy was introduced as a determinant of the state, structure and function of an ecosystem. This value can be represented in two hypostases: the first is the energy stored in the ecosystem, the second is its degradation and entropy formation. Currently, the concept of exergy in ecology is used to redefine the Darwinian principle of "survival of the fittest" into "ecological thermodynamics", according to which the most adapted ecosystem is able to use and conserve flows of energy and materials in the most efficient way. There is a need to adequately calculate the exergy of ecosystems, as information on this characteristic allows not only to manage ecosystems in the short term, but also to predict the capacity of ecosystems to withstand current threats to their integrity and adapt systems to these challenges. The importance of practical calculation of exergy in connection with the above is beyond doubt. Along with the known practice of calculating the exergy of living organisms using gene structure, it is necessary to have alternative ways of calculating exergy. This paper proposes an alternative method for calculating the exergy of forest ecosystems, which contains both elements of the traditional approach to exergy calculation and new provisions related to the use of ecological and physiological models of stand growth dynamics
exergy, entropy density, entropy production and flux, stand dynamics model, Scots pine, Pinus sylvestris L., European spruce, Picea abies L., Siberian pine, Pinus sibirica Du Tour, Quercus robur, Common oak, Betula pendula Roth, Sagebrush birch
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