Significance of Topographic Gradient in Stem Diameter - Height Allometry for Precise Biomass Estimation of a Tropical Moist Forest in the Central Amazon

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
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47-01-13.pdf489.02 KB

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.

刊行年月日
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
47
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

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