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Title: An empirical approach for estimating natural regeneration for the Forest Vegetation Simulator

Author: Vandendriesche, Don;

Date: 2010

Source: In: Jain, Theresa B.; Graham, Russell T.; Sandquist, Jonathan. Integrated management of carbon sequestration and biomass utilization opportunities in a changing climate: Proceedings of the 2009 National Silviculture Workshop; 2009 June 15-18; Boise, ID. Proceedings RMRS-P-61. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 307-327.

Publication Series: Proceedings (P)

   Note: This article is part of a larger document. View the larger document

Description: The “partial” establishment model that is available for most Forest Vegetation Simulator (FVS) geographic variants does not provide an estimate of natural regeneration. Users are responsible for supplying this key aspect of stand development. The process presented for estimating natural regeneration begins by summarizing small tree components based on observations from local Forest Inventory and Analysis (FIA) data sets. Average frequency and height for seedlings and small saplings by tree species are calculated from the data. Seedling recruitment is determined by relationships to the maximum stand density index. Small saplings regeneration is derived from a distribution pattern computed from current stand size and density conditions. Apportioning the small sapling frequencies according to the observed distribution pattern provides an expected natural regeneration estimate by stand size/density condition, or vegetation state. Associated small sapling shade tolerance factors can be applied to govern progressions in species composition across the stand size/density continuum. Repute, an FVS post-processing program, has been developed to automate the estimation process. An example from the Southwest U.S. is presented to demonstrate the methodology.

Keywords: silviculture, carbon sequestration, climate change, forest management

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Citation:


Vandendriesche, Don. 2010. An empirical approach for estimating natural regeneration for the Forest Vegetation Simulator. In: Jain, Theresa B.; Graham, Russell T.; Sandquist, Jonathan. Integrated management of carbon sequestration and biomass utilization opportunities in a changing climate: Proceedings of the 2009 National Silviculture Workshop; 2009 June 15-18; Boise, ID. Proceedings RMRS-P-61. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 307-327.

 


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