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| Симулатор на горска растителност× | Крива на индекса на местообитанието× | |
|---|---|---|
| Област | Горско стопанство | Горско стопанство |
| Семейство | Process / pipeline | Process / pipeline |
| Година на възникване≠ | 1990 | 1954 |
| Създател≠ | George Dixon | Joseph Westveld |
| Тип≠ | simulation system | productivity index |
| Основополагащ източник≠ | Dixon, G. E. (2002). Essential FVS: A User's Guide to the Forest Vegetation Simulator. USDA Forest Service Rocky Mountain Research Station General Technical Report RMRS-GTR-120. link ↗ | Clutter, J. L., Fortson, J. C., Pienaar, L. V., Brister, G. H., & Bailey, R. L. (1983). Timber Management: A Quantitative Approach. John Wiley & Sons. link ↗ |
| Други названия | FVS, growth simulator | site productivity, growth intercept |
| Свързани≠ | 2 | 1 |
| Резюме≠ | The Forest Vegetation Simulator (FVS) is a widely used growth and yield model system developed by the USDA Forest Service that simulates tree and stand development over multiple decades. FVS uses individual-tree growth models (not stand averages) parameterized for different forest regions, allowing realistic simulation of mixed-species, uneven-aged, and disturbed forests. It is used operationally for harvest planning, fire modeling, wildlife habitat assessment, and management scenario evaluation across U.S. forests. | A site index curve is a family of curves relating tree height to stand age, used to quantify the productivity of a forest site. Site index is conventionally defined as the height of dominant trees at a reference age (typically 50 years in temperate forests). These curves enable foresters to classify sites by productivity class and to predict growth rates for planning timber harvests and silvicultural treatments. Site index curves are among the most fundamental tools in forest growth and yield modeling. |
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