Difference between revisions of "Template:Heureka Data And Models"
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PlanWise supports forest planning problems of Model 1 type<ref>Johnson, K. Norman, and Scheurman, H. Lynn. Techniques for Prescribing Optimal Timber Harvest and Investment Under Different Objectives - Discussion and Synthesis. 1977. Forest Science Monograph. </ref>, meaning that the developement of each stand is projected over the entire planning horizon. | PlanWise supports forest planning problems of Model 1 type<ref>Johnson, K. Norman, and Scheurman, H. Lynn. Techniques for Prescribing Optimal Timber Harvest and Investment Under Different Objectives - Discussion and Synthesis. 1977. Forest Science Monograph. </ref>, meaning that the developement of each stand is projected over the entire planning horizon. | ||
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Revision as of 08:17, 8 June 2011
Data and data models
Forest data input
The Heureka system includes a database that stores areas, stands, cells, sample plots, and tree-level data (sample trees). Functions are available to import NFI data, compartment register data, GIS shape files, kNN data, and some other data sources. In case tree-level data is not available, the system can simulate trees lists from theoretical diameter and height distribution models.
User input
There are extensive options for the user to control how computations are made. For example, the user can choose what growth model to use, the timing (range) of harvest activities, how thinnings should be performed, whether a certain part of a stand should be set aside for nature conservation, etc.
Models
The "driving force" in Heureka is the growth, mortality, regeneration and cutting of trees. There models constitute the growth-and-yield models, on which most of the other models in the system depend. An exception is the soil model which predicts the amout of soil carbon and soil nitrogen, using litter as one input.
PlanWise supports forest planning problems of Model 1 type[1], meaning that the developement of each stand is projected over the entire planning horizon.
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