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A similarity criterion for forest growth curves Nature Precedings
Georgii A. Alexandrov; Georgy S. Golitsyn.
Comparison of forest growth curves has led many to the conclusion that there is a similarity between forest stands growing in different conditions. Here we treat the same subject from the viewpoint of similarity theory. Our goal is to form a dimensionless ratio of biophysical entities that could parameterize the diversity of forest growth curves. (Such ratios are called similarity criteria.) Pursuing this goal, we focus on the analogy between tree crown growth and atomic explosion. A blast wave is formed when the rate of energy release is much higher than the rate of energy dissipation. The difference between the rates of energy release and dissipation is the essence of this phenomenon. The essential feature of crown growth is the difference between the...
Tipo: Manuscript Palavras-chave: Ecology; Plant Biology.
Ano: 2011 URL: http://precedings.nature.com/documents/6561/version/1
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Biospheric context of Siberian development Nature Precedings
Georgii A. Alexandrov; Gen Inoue; Tsuneo Matsunaga.
Recent publications on human appropriation of Net Primary Production (NPP) raise the question of how much of the biosphere’s productivity we can appropriate in a sustainable way. This article brings the issue into the context of Siberian development. In contrast to many other regions of the world, the population density in Siberia is still very low as compared to the NPP supplied by regional ecosystems. Hence, it is not too late to raise the question on how much of the NPP supplied by Siberian ecosystems we can appropriate in a sustainable way.
Tipo: Manuscript Palavras-chave: Ecology; Earth & Environment.
Ano: 2011 URL: http://precedings.nature.com/documents/2478/version/2
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Biospheric context of Siberian development Nature Precedings
Georgii A. Alexandrov; Gen Inoue; Tsuneo Matsunaga.
Productivity of ecosystems surrounding a city is important for supporting its activities in a sustainable way. The total terrestrial net primary production (NPP) shows biosphere potential to supply primary food energy source for all non-autotrophic species including humans. Humans appropriate approximately 20% of NPP, in average. Even in the relatively well-populated regions of Siberia, NPP per capita exceeds the average level by several times suggesting the window of opportunity for achieving sustainable development. (3 pages, 1086 words, 2 maps)

Tipo: Manuscript Palavras-chave: Ecology; Earth & Environment.
Ano: 2008 URL: http://precedings.nature.com/documents/2478/version/1
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