Simulation of mixedwood management of aspen and white spruce in northeastern British Columbia
Identifieur interne : 004005 ( Main/Exploration ); précédent : 004004; suivant : 004006Simulation of mixedwood management of aspen and white spruce in northeastern British Columbia
Auteurs : J. R. Wang [Canada] ; P. Comeau [Canada] ; J. P. Kimmins [Canada]Source :
- Water, Air, and Soil Pollution [ 0049-6979 ] ; 1995-05-01.
Abstract
Abstract: FORECAST, an ecosystem simulation model, was calibrated for aspen (Populus tremuloides Michx) and white spruce (Picea glauca (Moench) Voss) stands using data collected in the Boreal White and Black Spruce biogeoclimatic zone in northeastern British Columbia and published data. Simulations were undertaken to examine the effects of initial density of aspen on yield of white spruce in an aspen and spruce mixedwood stand, and to compare the predicted stemwood biomass yields of aspen, white spruce and mixedwood stands. Results of the simulations suggest that mixedwood management regimes on the same medium quality site should have higher stemwood yield compared to pure white spruce stand. Simulated stemwood biomass yield of pure aspen stands over 240 years on medium site varied from 682.5 Mg ha−1 to 239.1 Mg ha−1 for different rotation lengths (30 to 120 years). Repeated rotations of monoculture white spruce produced much less stemwood biomass, simulated yields over 240 years ranging from 877.3 Mg ha−1to 248.4 Mg ha−1 for rotation lengths of 60 to 240 years. Simulated aspen and white spruce mixedwood stands produced higher stemwood biomass yields than the pure white spruce stands, but less than the pure aspen stands; from 217.4 Mg ha−1 to 292.8 Mg ha−1 over 240 years. Variations in initial densities of aspen did not affect spruce stemwood biomass yield over the simulation period. This model shows potential for comparing the relative effects of different management strategies on harvestable volume and variety of other ecosystem variables. A calibrated version of the model should be useful as both a management simulator and a research tool. However, shortcomings in the representation of the canopy architecture of mixed species stands suggested the need to develop an individual tree version of this ecosystem management model for application to mixed species stands.
Url:
DOI: 10.1007/BF01182831
Affiliations:
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R." last="Wang">J. R. Wang</name><affiliation wicri:level="1"><country xml:lang="fr">Canada</country><wicri:regionArea>Faculty of Forestry, University of British Columbia, 270-2357 Main Mall, V6T 1Z4, Vancouver, British Columbia</wicri:regionArea><wicri:noRegion>British Columbia</wicri:noRegion></affiliation></author><author><name sortKey="Comeau, P" sort="Comeau, P" uniqKey="Comeau P" first="P." last="Comeau">P. Comeau</name><affiliation wicri:level="1"><country xml:lang="fr">Canada</country><wicri:regionArea>Research Branch, British Columbia Ministry of Forests, 31 Bastion Square, V8W 3E7, Victoria, British Columbia</wicri:regionArea><wicri:noRegion>British Columbia</wicri:noRegion></affiliation></author><author><name sortKey="Kimmins, J P" sort="Kimmins, J P" uniqKey="Kimmins J" first="J. P." last="Kimmins">J. P. Kimmins</name><affiliation wicri:level="1"><country xml:lang="fr">Canada</country><wicri:regionArea>Faculty of Forestry, University of British Columbia, 270-2357 Main Mall, V6T 1Z4, Vancouver, British Columbia</wicri:regionArea><wicri:noRegion>British Columbia</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Water, Air, and Soil Pollution</title><title level="j" type="sub">An International Journal of Environmental Pollution</title><title level="j" type="abbrev">Water Air Soil Pollut</title><idno type="ISSN">0049-6979</idno><idno type="eISSN">1573-2932</idno><imprint><publisher>Kluwer Academic Publishers</publisher><pubPlace>Dordrecht</pubPlace><date type="published" when="1995-05-01">1995-05-01</date><biblScope unit="volume">82</biblScope><biblScope unit="issue">1-2</biblScope><biblScope unit="page" from="171">171</biblScope><biblScope unit="page" to="178">178</biblScope></imprint><idno type="ISSN">0049-6979</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0049-6979</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: FORECAST, an ecosystem simulation model, was calibrated for aspen (Populus tremuloides Michx) and white spruce (Picea glauca (Moench) Voss) stands using data collected in the Boreal White and Black Spruce biogeoclimatic zone in northeastern British Columbia and published data. Simulations were undertaken to examine the effects of initial density of aspen on yield of white spruce in an aspen and spruce mixedwood stand, and to compare the predicted stemwood biomass yields of aspen, white spruce and mixedwood stands. Results of the simulations suggest that mixedwood management regimes on the same medium quality site should have higher stemwood yield compared to pure white spruce stand. Simulated stemwood biomass yield of pure aspen stands over 240 years on medium site varied from 682.5 Mg ha−1 to 239.1 Mg ha−1 for different rotation lengths (30 to 120 years). Repeated rotations of monoculture white spruce produced much less stemwood biomass, simulated yields over 240 years ranging from 877.3 Mg ha−1to 248.4 Mg ha−1 for rotation lengths of 60 to 240 years. Simulated aspen and white spruce mixedwood stands produced higher stemwood biomass yields than the pure white spruce stands, but less than the pure aspen stands; from 217.4 Mg ha−1 to 292.8 Mg ha−1 over 240 years. Variations in initial densities of aspen did not affect spruce stemwood biomass yield over the simulation period. This model shows potential for comparing the relative effects of different management strategies on harvestable volume and variety of other ecosystem variables. A calibrated version of the model should be useful as both a management simulator and a research tool. However, shortcomings in the representation of the canopy architecture of mixed species stands suggested the need to develop an individual tree version of this ecosystem management model for application to mixed species stands.</div></front></TEI><affiliations><list><country><li>Canada</li></country></list><tree><country name="Canada"><noRegion><name sortKey="Wang, J R" sort="Wang, J R" uniqKey="Wang J" first="J. R." last="Wang">J. R. Wang</name></noRegion><name sortKey="Comeau, P" sort="Comeau, P" uniqKey="Comeau P" first="P." last="Comeau">P. Comeau</name><name sortKey="Kimmins, J P" sort="Kimmins, J P" uniqKey="Kimmins J" first="J. P." last="Kimmins">J. P. Kimmins</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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