1. Classification of the models

2. 1 At genesis of forest modelling 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: 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 ?“ 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?“ 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. 1 123 2 3

3. 2 Chessboard of the models ‘But nothing is so easy in the story as looks at its beginning’

4. 3 (1) 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

5. 4 Some other frequent types: Biome model

6. 5 Some other frequent types: Gap model

7. 6 Some other frequent types: Big leaf model

8. 7 seconddayyeardecadecenturymillennium cell organ organism population community biome spatial level time level

9. 8 Upscale and downscale

10. 9 biometrical growthmorphological growth SIBYLAGroIMP Structuraldownscale SIBYLA - GroIMP

11. 10 Structuraldownscale SIBYLA - GroIMP

12. remote sensing aerial laser scanning terrain measurements terrestrial laser skanning forest models geographic information systems knowledge -based and expert systems database systems high-performance computing virtual realitystrategic gamesinternet spatial decision -support systems MSFM AFM PR Computer Aided Forest Modelling Forest Ecosystem Analysis And Modelling Forest Ecosystem Analysis And Modelling