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N. Florea (2005)
Publisher: Alexandru Ioan Cuza University of Iasi
Journal: Soil Forming Factors and Processes from the Temperate Zone
Languages: English
Types: Article
Subjects: S1-972, Q, processes, Science, Agriculture (General), QE1-996.5, cycles, Geology, energy

Classified by OpenAIRE into

arxiv: Physics::Geophysics
All processes that take place in nature need energy. As a consequence of the irreversibile processes development in the environment, an increase of entropy takes place. The biologists consider that biological territorial systems, unlike the non-biological ones, have an anti-entropic behaviour, due to the receiving energy from outside the system, namely solar radiation converted in chemical energy by photosynthesis. Also, some non-biological territorial systems, like the hydrological cycle for instance, develop continuously due to the receiving of energy from Sun. In this cycle the water is eliminatedas vapours with high entropy and the system receives liquid (or solid) water with low entropy; this fact prevents from reaching the stage of maximum entropy. The hydrological cycle has, therefore,an anti-entropic behaviour. Nevertheless, there are differences between non-biological and biological territorial systems. In the non-biological territorial systems only conversions of mechanical into caloric energy take place, usually without stocking of energy. The biological territorial systems on the other hand are characterized by various conversions of energy (caloric, chemical, mechanical, biological or vital, noesic), by stocking of energy that is necessary for the functioning of the system and the creation of order, which makes up the premise for development. The soil territorial systems have also an anti-entropic behaviours due to both accumulation/decomposition of organic matter in the framework of the biological cycle and water evaporation/atmospheric precipitations in the framework of the hydrological cycle, cycles that take place in the soil cover under the influence of the solar energy contribution.

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