Significance of Topographic Gradient in Stem Diameter - Height Allometry for Precise Biomass Estimation of a Tropical Moist Forest in the Central Amazon
ISSN | 00213551 |
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書誌レコードID(総合目録DB) | AA0068709X |
We developed a stem diameter D-height H allometric model that included variability in the D-H relationship along a topographic gradient. The study site was located along a belt transect (2500 × 20 m) established in a primary tropical forest near Manaus, Brazil. The transect included typical topography of the region, characterized by plateaus and valleys called “baixios”. The D-H allometric model (n = 1307) indicated that potential tree height increased significantly, from 28 m at the lowest baixio plot to 35 m at the highest plateau plot. Consequently, by combining the D-H allometric model and an allometric equation with the variable D2H, biomass was estimated for trees (D > 10 cm) in each sub-plot (20 × 20 m). Ignoring variability in the D-H relationship introduced wide-ranging error to biomass estimation; error values ranged from -5% at a baixio plot to +6% at a plateau plot. Average biomass was 317 ± 28 (SE) Mg ha-1, and tree density and biomass fell significantly with decreasing relative elevation.
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作成者 | SUWA Rempei SAKAI Takeshi SANTOS Joaquim dos SILVA Roseana Pereira da KAJIMOTO Takuya ISHIZUKA Moriyoshi HIGUCHI Niro |
著者キーワード |
asymptotic height Brazilian Amazon REDD+ |
公開者 | Japan International Research Center for Agricultural Sciences |
オンライン掲載日 | |
国立情報学研究所メタデータ主題語彙集(資源タイプ) | Journal Article |
巻 | 47 |
号 | 1 |
開始ページ | 109 |
終了ページ | 114 |
DOI | 10.6090/jarq.47.109 |
権利 | Japan International Research Center for Agricultural Sciences |
言語 | eng |