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Improving forest management decision...

Didion, Markus Peter.

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Improving forest management decisions by modeling landscape disturbance impacts on forest age structure dynamics.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Improving forest management decisions by modeling landscape disturbance impacts on forest age structure dynamics./
Author:	Didion, Markus Peter.
Description:	96 p.
Notes:	Source: Masters Abstracts International, Volume: 42-02, page: 0503.
Contained By:	Masters Abstracts International42-02.
Subject:	Agriculture, Forestry and Wildlife. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MQ81780
ISBN:	0612817806

Improving forest management decisions by modeling landscape disturbance impacts on forest age structure dynamics.
Didion, Markus Peter.

Improving forest management decisions by modeling landscape disturbance impacts on forest age structure dynamics. - 96 p.

Source: Masters Abstracts International, Volume: 42-02, page: 0503.

Thesis (M.R.M.)--Simon Fraser University (Canada), 2002.

The emerging paradigm of ecosystem-based management suggests taking a holistic approach to management, which requires a thorough understanding of the interactions between anthropogenic and natural disturbance processes in forest ecosystems. Most current forest management plans are based on the hypothesis that natural disturbance and forest harvesting are compensatory in their impacts on forest ecosystems. Using a spatially explicit landscape modeling tool, I investigate the hypothesis of compensatory effects between forest harvesting and fire and the alternative hypothesis of depensatory effects. I simulate several parameters regarding management (strategy, harvesting rate and cost) and fire regime (fire return interval and extent) affecting forest ecosystem age structure at a landscape scale.

ISBN: 0612817806Subjects--Topical Terms:

783690
Agriculture, Forestry and Wildlife.

Improving forest management decisions by modeling landscape disturbance impacts on forest age structure dynamics.
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245 1 0 $a Improving forest management decisions by modeling landscape disturbance impacts on forest age structure dynamics.
300 $a 96 p.
500 $a Source: Masters Abstracts International, Volume: 42-02, page: 0503.
500 $a Adviser: Marie Josee Fortin.
502 $a Thesis (M.R.M.)--Simon Fraser University (Canada), 2002.
520 $a The emerging paradigm of ecosystem-based management suggests taking a holistic approach to management, which requires a thorough understanding of the interactions between anthropogenic and natural disturbance processes in forest ecosystems. Most current forest management plans are based on the hypothesis that natural disturbance and forest harvesting are compensatory in their impacts on forest ecosystems. Using a spatially explicit landscape modeling tool, I investigate the hypothesis of compensatory effects between forest harvesting and fire and the alternative hypothesis of depensatory effects. I simulate several parameters regarding management (strategy, harvesting rate and cost) and fire regime (fire return interval and extent) affecting forest ecosystem age structure at a landscape scale.
520 $a Aspatial and temporal analyses of the data suggest that the interaction of harvesting and fire are depensatory. Forest ecosystem conditions are outside the historical range of variation under the Status Quo scenario, which describes current practices of clearcutting for sustained yield in Quebec's boreal forest. Results indicate that under increased disturbance levels from harvesting and fire the area of re-establishing early-seral forest experiences recurring disturbance before reaching reproductive age isolating patches from seed sources. In contrast, more restrictive alternatives to the Status Quo, which limit timber yields, can maintain a forest age structure similar to historical conditions over most of the examined range of fire regime and management parameters. A sensitivity analysis on harvesting rate showed that for harvesting rates between 0.8% and 1% annually overall timber yields are similar in the case of current sustained yield management. Overall, management strategy, harvesting rate, and fire return interval are the most significant parameters in this aspatial analysis.
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