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Classification of the models. At genesis of forest mode l ling the three Wisemen have operated :. The first has been called BIOLOGIST and searched for answer to: „Why tree organs growth?“ He gave to world: algorithm of photosynthesis Gift has been accepted in disciplines:
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At genesis of forest modelling the three Wisemenhave operated : The first has been called BIOLOGIST and searched for answer to: „Why tree organs growth?“ He gave to world: algorithm of photosynthesis Gift has been accepted in disciplines: bioclimatology, ecopedology, plant physiology Process-based models have been established. The second has been called MATHEMATICIAN and searched for answer to: „How the tree is formed in space ?“ He gave to world: fractal Gift has been accepted in disciplines : formal grammar, fractal geometry, computer graphics Structural models have been established. The third has been called FORESTER and searched for answer to: „What benefit is produced by forest?“ He gave to world: regression equation Gift has been accepted in disciplines : biometry, forest mensuration, forest yield science Empirical models have been established. 1 2 3 2 1 3 1
‘But nothing is so easy in the story as looks at its beginning’ Chessboard of the models 2
static vegetation models (biome models), • (2) eco-physiological tree models, • (3) functional-structural tree models, • (4) empirical distance-dependent tree models, • (5) empirical distance-independent tree models, • (6) tree patch or gap models, • (7) frequency patch or gap models, • (8) frequency population models, • (9) population and species models, • (10) models of functional types, • (11) models of the dynamic of patch or gap groups, • (12) "big leaf" eco-physiological models, • (13) eco-physiological models of the average tree. BALANCE GroIMP SIBYLA 3
Some other frequent types: Biome model 4
Some other frequent types: Gap model 5
Some other frequent types: Big leaf model 6
spatial level biome community population organism organ time level cell second day year decade century millennium 7
Structural downscale SIBYLA - GroIMP biometrical growth morphological growth SIBYLA GroIMP 9
Structural downscale SIBYLA - GroIMP 10
Forest Ecosystem Analysis And Modelling remote sensing knowledge -based and expert systems Computer Aided Forest Modelling geographic information systems aerial laser scanning spatial decision -support systems MSFM high-performance computing forest models AFM terrain measurements PR database systems terrestrial laser skanning virtual reality strategic games internet