کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9620505 | 159414 | 2005 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Age-related equations for above- and below-ground biomass of a Eucalyptus hybrid in Congo
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
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
A complete set of equations for below- and above-ground biomass of a natural Eucalyptus hybrid in Congo was constructed. Heteroscedasticity of data was taken into account by fitting weighted non-linear regressions using maximum likelihood estimates. Stand age was introduced as a complementary variable in the equations for a majority of above-ground compartments and led to improved estimates of biomass. Because of the limited number of sampled trees for below-ground parts, it was not possible to develop the same kind of equations. Simple allometric relationships were then fitted for these components (stumps, large, medium, and fine roots). Additivity was verified and showed no significant deviation except for the youngest stand, where the sum of below- and above-ground biomass equations was preferable to the sum of component equations or to the total biomass equation. This set of equations will now be used to evaluate both the mean and the interval of confidence of biomass content and partitioning within the stands.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Forest Ecology and Management - Volume 205, Issues 1â3, 1 February 2005, Pages 199-214
Journal: Forest Ecology and Management - Volume 205, Issues 1â3, 1 February 2005, Pages 199-214
نویسندگان
Laurent Saint-André, Armel Thongo M'Bou, André Mabiala, Welcome Mouvondy, Christophe Jourdan, Olivier Roupsard, Philippe Deleporte, Olivier Hamel, Yann Nouvellon,