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Identifying and Characterizing Important Trembling Aspen Competitors with Juvenile Lodgepole Pine in Three South-Central British Columbia Ecosystems
المؤلفون المشاركون
Newsome, Teresa A.
Heineman, Jean L.
Nemec, Amanda F. Linnell
المصدر
International Journal of Forestry Research
العدد
المجلد 2012، العدد 2012 (31 ديسمبر/كانون الأول 2012)، ص ص. 1-12، 12ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2012-03-18
دولة النشر
مصر
عدد الصفحات
12
التخصصات الرئيسية
الملخص EN
Critical height ratios for predicting competition between trembling aspen and lodgepole pine were identified in six juvenile stands in three south-central British Columbia ecosystems.
We used a series of regression analyses predicting pine stem diameter from the density of neighbouring aspen in successively shorter relative height classes to identify the aspen-pine height ratio that maximized R2.
Critical height ratios varied widely among sites when stands were 8–12 years old but, by age 14–19, had converged at 1.25–1.5.
Maximum R2 values at age 14–19 ranged from 13.4% to 69.8%, demonstrating that the importance of aspen competition varied widely across a relatively small geographic range.
Logistic regression also indicated that the risk of poor pine vigour in the presence of aspen varied between sites.
Generally, the degree of competition, risk to pine vigour, and size of individual aspen contributing to the models declined along a gradient of decreasing ecosystem productivity.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Newsome, Teresa A.& Heineman, Jean L.& Nemec, Amanda F. Linnell. 2012. Identifying and Characterizing Important Trembling Aspen Competitors with Juvenile Lodgepole Pine in Three South-Central British Columbia Ecosystems. International Journal of Forestry Research،Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-481886
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Newsome, Teresa A.…[et al.]. Identifying and Characterizing Important Trembling Aspen Competitors with Juvenile Lodgepole Pine in Three South-Central British Columbia Ecosystems. International Journal of Forestry Research No. 2012 (2012), pp.1-12.
https://search.emarefa.net/detail/BIM-481886
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Newsome, Teresa A.& Heineman, Jean L.& Nemec, Amanda F. Linnell. Identifying and Characterizing Important Trembling Aspen Competitors with Juvenile Lodgepole Pine in Three South-Central British Columbia Ecosystems. International Journal of Forestry Research. 2012. Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-481886
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-481886
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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