Lodgepole pine and trembling aspen competition: Neighbourhood studies within 22 to 39 year-old pine plantations of northern British Columbia
Six lodgepole pine plantations located within the Sub Boreal Spruce (SBS) biogeoclimatic zone of the northern interior of British Columbia were chosen to study the impacts of neighbourhood aspen competition on the growth of planted lodgepole pine (22–39 years old). At each site, 30 pine trees (CP) w...
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| Language: | English |
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Canadian Institute of Forestry
2017-10-01
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| Series: | The Forestry Chronicle |
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| Online Access: | https://pubs.cif-ifc.org/doi/10.5558/tfc2017-031 |
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| author | by George Harper |
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| author_sort | by George Harper |
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| description | Six lodgepole pine plantations located within the Sub Boreal Spruce (SBS) biogeoclimatic zone of the northern interior of British Columbia were chosen to study the impacts of neighbourhood aspen competition on the growth of planted lodgepole pine (22–39 years old). At each site, 30 pine trees (CP) were selected as plot centres across the observed range of aspen competition. Information on the six nearest neighbours (NN) and a variety of competition indices were evaluated using linear and nonlinear models. Competition indices based on diameter or height relative to size were found as the best overall predictors of CP growth. Proximity of NN to the CP was found to be inconsistent as a predictor of growth. Individual pine and aspen NN modelling suggested aspen competition had the greatest influence on CP growth restriction. The results do not support aspen thresholds for optimizing the growth of free growing pine plantations. It is recommended that performance-based standards be developed that account for aspen competition intensity and provide guidance for the management of pine stand productivity. |
| format | Article |
| id | doaj-art-c018af6de1f6494e98e9a4706afa80d5 |
| institution | Kabale University |
| issn | 0015-7546 1499-9315 |
| language | English |
| publishDate | 2017-10-01 |
| publisher | Canadian Institute of Forestry |
| record_format | Article |
| series | The Forestry Chronicle |
| spelling | doaj-art-c018af6de1f6494e98e9a4706afa80d52025-08-20T03:44:04ZengCanadian Institute of ForestryThe Forestry Chronicle0015-75461499-93152017-10-01930322624010.5558/tfc2017-031Lodgepole pine and trembling aspen competition: Neighbourhood studies within 22 to 39 year-old pine plantations of northern British Columbiaby George Harper0Resource Practices Branch, B.C. Ministry of Forests, Lands and Natural Resource Operations, Victoria, BC, Canada V8W 9C2Six lodgepole pine plantations located within the Sub Boreal Spruce (SBS) biogeoclimatic zone of the northern interior of British Columbia were chosen to study the impacts of neighbourhood aspen competition on the growth of planted lodgepole pine (22–39 years old). At each site, 30 pine trees (CP) were selected as plot centres across the observed range of aspen competition. Information on the six nearest neighbours (NN) and a variety of competition indices were evaluated using linear and nonlinear models. Competition indices based on diameter or height relative to size were found as the best overall predictors of CP growth. Proximity of NN to the CP was found to be inconsistent as a predictor of growth. Individual pine and aspen NN modelling suggested aspen competition had the greatest influence on CP growth restriction. The results do not support aspen thresholds for optimizing the growth of free growing pine plantations. It is recommended that performance-based standards be developed that account for aspen competition intensity and provide guidance for the management of pine stand productivity.https://pubs.cif-ifc.org/doi/10.5558/tfc2017-031Lodgepole pineaspenboreal mixedwoodsnearest neighboursstem volumecompetition |
| spellingShingle | by George Harper Lodgepole pine and trembling aspen competition: Neighbourhood studies within 22 to 39 year-old pine plantations of northern British Columbia The Forestry Chronicle Lodgepole pine aspen boreal mixedwoods nearest neighbours stem volume competition |
| title | Lodgepole pine and trembling aspen competition: Neighbourhood studies within 22 to 39 year-old pine plantations of northern British Columbia |
| title_full | Lodgepole pine and trembling aspen competition: Neighbourhood studies within 22 to 39 year-old pine plantations of northern British Columbia |
| title_fullStr | Lodgepole pine and trembling aspen competition: Neighbourhood studies within 22 to 39 year-old pine plantations of northern British Columbia |
| title_full_unstemmed | Lodgepole pine and trembling aspen competition: Neighbourhood studies within 22 to 39 year-old pine plantations of northern British Columbia |
| title_short | Lodgepole pine and trembling aspen competition: Neighbourhood studies within 22 to 39 year-old pine plantations of northern British Columbia |
| title_sort | lodgepole pine and trembling aspen competition neighbourhood studies within 22 to 39 year old pine plantations of northern british columbia |
| topic | Lodgepole pine aspen boreal mixedwoods nearest neighbours stem volume competition |
| url | https://pubs.cif-ifc.org/doi/10.5558/tfc2017-031 |
| work_keys_str_mv | AT bygeorgeharper lodgepolepineandtremblingaspencompetitionneighbourhoodstudieswithin22to39yearoldpineplantationsofnorthernbritishcolumbia |