Peder: /* Construction of tree populations from aggregated young stand data */

2010-09-27T06:46:01Z

Construction of tree populations from aggregated young stand data

Peder at 06:44, 27 September 2010

2010-09-27T06:44:54Z

Peder: /* Introduction */

2010-09-27T06:44:12Z

Introduction

2010-09-27T06:42:48Z

Created page with 'Author: Björn Elfving. ==Introduction== Heureka replaces the former planning systems Hugin and Forest Planning Package, and the growth models from those systems are available in�?�'

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		+	==References==

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	Author: Björn Elfving.		Author: Björn Elfving.
	==Introduction==		==Introduction==

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 Author: Björn Elfving.
 ==Introduction==
-Heureka replaces the former planning systems Hugin and Forest Planning Package, and the growth models from those systems are available in Heureka. However, the default options for growth modelling in Heureka are mainly based on new functions which will be presented here. All growth functions are common for the three applications and predictions can be based on single plot data or data from several plots representing a stand.
+The default options for growth modelling in Heureka are based functions which will be presented here. All growth functions are common for the three applications StandWise, PlanWise and RegWise, and predictions can be based on single plot data or data from several plots representing a stand.
 Two stages are distinguished at the growth modelling: the stand establishment period (h<7 m) and the development of established stands (h>7 m). Predictions of stand establishment and development of young stands are based on data from the Hugin young stand survey. For un-stocked areas (in initial inventory data or on areas that are clear-cut during the growth predictions) the expected stocking 12 years after clear-cut in natural regenerations or 12 years after sowing or planting is calculated as a function of site conditions and prescribed regeneration measures. With stocking, regeneration type and site conditions as indicators, data on height- and species distribution in the new stand is either imported from a data-base with measured plots or estimated with functions based on data from this data-base. Probabilities for all trees to become a future crop tree are calculated, and from this the mean height of different species in this population. Those probabilities are also used for stem selection at pre-commercial thinning.

Simulation models - Revision history

Peder: /* Construction of tree populations from aggregated young stand data */

Peder at 06:44, 27 September 2010

Peder: /* Introduction */