Biogeoclimatic ecosystem classification in British Columbia

Pojar, J.; Klinka, Karel; Meidinger, D.

doi:10.1016/0378-1127(87)90100-9

Cited by 429 publications

(294 citation statements)

References 31 publications

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“…The stand level comprises silviculture openings that capture the information of reforestation, seed selection, use, and deployment. And the landscape level includes climatic, ecological, and genetic information that is described by the biogeoclimatic ecosystem classification (BEC) (POJAR et al, 1987;see below) and Seed Planning Zone-Unit (SPZ-SPU) classification systems. Seed Planning Zones (SPZs) are the spatial representation of genetic variation and ecological conditions for the reforested tree species based on provenance trial series (BRITISH COLUMBIA MINISTRY OF FORESTS AND RANGE, 2009a;MEIDINGER et al, 2005;MORGENSTERN, 1996;YING and YANCHUK, 2006).…”

Section: Study Areamentioning

confidence: 99%

“…The BEC system was created to develop a "permanent," land-based, ecological classification tool that organizes the knowledge of the natural environment as a basis for managing natural resources (POJAR et al, 1987). BEC classification is comprised of three levels: vegetation, zonal, and site (BRITISH COLUMBIA MINISTRY OF FORESTS AND RANGE, 2009b).…”

Section: Study Areamentioning

confidence: 99%

“…BEC classification is comprised of three levels: vegetation, zonal, and site (BRITISH COLUMBIA MINISTRY OF FORESTS AND RANGE, 2009b). Climate, soil moisture, and nutrient regimes (edatopic grid), succession climax, terrestrial, and vegetation factors form the basic elements for determination of BEC zones (POJAR et al, 1987). There are ten BEC zones that fall within the Prince George seed orchard SPZ, where five zones are large enough in area to be visualized and mapped (Figure 1).…”

Section: Study Areamentioning

confidence: 99%

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Evaluating Interior Spruce Seed Deployment with GIS-Based Modeling Using British Columbia’s Prince George Seed Planning Zone as a Model

et al. 2012

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The maintenance, protection, and conservation of forest genetic resources for economic, ecological and social benefits are daunting tasks. Understanding how reforestation materials are spatially and temporally deployed across the landscape is an integral component of forest genetic resources management. To improve the current understanding of how reforestation materials are deployed in British Columbia (BC), we developed a geographical information systems (GIS) method to track seed deployment across silviculture openings. Generally, reforestation materials can originate from either natural stand (wild seed collections) or orchards' seed sources (improved seed); the latter are produced within the framework of specific tree improvement program designed for a particular species within a well-defined seed deployment area, commonly known as Seed Planning Zone (SPZ). In this paper, we present a GIS-based method for evaluating seed deployment patterns for interior spruce (Picea glauca and Picea engelmannii and their natural hybrids) within the Prince George SPZ. The evaluation period ) is associated with wild stands and improved seed availability and the dynamic of each seed source proportionate contribution followed three distinct phases; namely, developing (1970-1987), immature (1988-1994), and mature (1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)) with a progressive increase of orchards' seed use over time. The developed method is scalable across SPZs of the same species or multiple species, thus providing the means to: 1) temporally and spatially monitor improved and natural stands seed deployment over the landscape; and 2) identify areas of concerns where a particular seed source is over-represented which might pose an increased genetic vulnerability. The present study revealed that the current interior spruce orchard's seed use within the Prince George SPZ is expected to exceed the provincial goal of performance target of 75 % by 2014. Additionally, areas of excessive use of one seed orchard seed were identified.

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Section: Study Areamentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

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Evaluating Interior Spruce Seed Deployment with GIS-Based Modeling Using British Columbia’s Prince George Seed Planning Zone as a Model

et al. 2012

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“…In British Columbia, the biogeoclimatic ecosystem classification (BEC) of forest lands represents the first step to achieve this goal of site-specific forest management. [16,18,26]. BC's BEC system is a hierarchical stratification of forest lands into zone, subzone and variant with increased uniformity in regional climate (vegetation-inferred); organization of forest ecosystems into BEC classifications involves the interpretative synthesis of landscape patterns, regional climates and vegetation types assuming their interactive dynamics is the causal process in the formation of forest and plant communities [26].…”

Section: Introductionmentioning

confidence: 99%

“…[16,18,26]. BC's BEC system is a hierarchical stratification of forest lands into zone, subzone and variant with increased uniformity in regional climate (vegetation-inferred); organization of forest ecosystems into BEC classifications involves the interpretative synthesis of landscape patterns, regional climates and vegetation types assuming their interactive dynamics is the causal process in the formation of forest and plant communities [26]. Within this framework of BEC classification, research has been focused on establishing a predictive relationship between site productivity and ecological site quality indicators, but mostly concentrated in the coastal region with Douglas-fir (Pseudotsuga menziesii [Mirb] Franco.…”

Section: Introductionmentioning

confidence: 99%

Predicting site productivity and pest hazard in lodgepole pine using biogeoclimatic system and geographic variables in British Columbia

Wu¹,

Ying

Ju³

2005

Ann. For. Sci.

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-A series of 60 lodgepole pine provenance tests was planted throughout the interior of British Columbia in 1974 to predict productivity and pest hazard based on ecological classification and geographical variables. These 60 tests cover eight biogeoclimatic zones and 25 subzones within the biogeoclimatic ecosystem classification (BEC) in British Columbia. Ten provenances are common among 60 provenances tested at each site. Mean height (20-year) was measured at 57 of the 60 sites, incidence of western gall rust assessed at 56 sites, terminal weevil at 49 sites, and needle cast at 50 sites. There is large site-to-site variation in all traits. Geographic models using latitude, longitude and elevation of test site location as predictors explained 47%, 35%, 33%, 27% and 8% of site variation for height, survival, incidence of needle cast, terminal weevil and western gall rust, respectively. BEC zones accounted for about the same amount of the site variation as geographic models, suggesting both accounted for the effect of site environments relating mainly to temperature and precipitation. Within BEC zones, site variation in height seems to be related to subzones associated with moisture gradient, but not temperature. Sites in the moist, mild ICH subzone and the dry, cool MS subzone along the southern Rocky Mt. Trench represent the best forest land for intensive silviculture of lodgepole pine, being highly productive with low pest hazard except needle cast. These sites are followed in productivity by sites across the vast interior stretching from the Skeena/Bulkley river basin in the northwest (moist SBS subzone), to the interior wetbelt on Shuswap-Quesnel Highland (moist, cool ICH subzone), and the Thompson Plateau in the southern interior, where lodgepole pine grew well with relatively low pest hazard at most sites. site productivity / pest hazard / western gall rust / needle cast / terminal weevil / ecological system Résumé -Prévoir la productivité des stations et les risques liés aux insectes nuisibles chez Pinus contorta en utilisant un système bioclimatique et des variables géographiques en Colombie Britannique. Une série de 60 tests de provenances de Pinus contorta ont été plantés à travers l'intérieur de la Colombie britannique pour prédire la productivité et les risques liés aux insectes nuisibles sur la base d'une classification écologique et de variables géographiques. Ces 60 tests couvrent 8 zones bioclimatiques dans le système de Classification bioclimatique des écosystèmes (BEC) en Colombie Britannique. Dix provenances étaient communes parmi les 60 provenances testées dans chaque station. La hauteur moyenne (à 20 ans) a été mesurée dans 57 des 60 stations, l'incidence de la rouille de l'écorce fixée dans 56 stations, le charançon des apex terminaux dans 49 stations et la chute des aiguilles dans 50 stations. Il y a une grande variation dans tous les traits d'une station à l'autre. Un modèle géographique utilisant la latitude, la longitude et l'altitude de la station considérée comme prédicateurs e...

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Environmental Stresses to Forests

Freer‐Smith¹

The Forests Handbook, Volume 1

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Biogeoclimatic ecosystem classification in British Columbia

Cited by 429 publications

References 31 publications

Evaluating Interior Spruce Seed Deployment with GIS-Based Modeling Using British Columbia’s Prince George Seed Planning Zone as a Model

Evaluating Interior Spruce Seed Deployment with GIS-Based Modeling Using British Columbia’s Prince George Seed Planning Zone as a Model

Predicting site productivity and pest hazard in lodgepole pine using biogeoclimatic system and geographic variables in British Columbia

Environmental Stresses to Forests

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