کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9620356 | 159428 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Within-tree variation of heartwood and ring width in maritime pine (Pinus pinaster Ait.)
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The number of heartwood rings was strongly correlated with cambial age. Heartwood formation was estimated to start at approximately 21 years of age and to proceed at a constant annual rate that increased with age (0.5 and 0.7 rings yearâ1 below and above 50 years of age). Within the tree, heartwood decreased with stem height, but in the lower part of the stem two patterns of variation were shown: a continuous decrease or an increase from stem base to a maximum at 2-3 m and a decrease afterwards. Sapwood radial width remained approximately constant within the tree and correlated positively with tree growth.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Forest Ecology and Management - Volume 210, Issues 1â3, 16 May 2005, Pages 81-89
Journal: Forest Ecology and Management - Volume 210, Issues 1â3, 16 May 2005, Pages 81-89
نویسندگان
Sofia Knapic, Helena Pereira,