国立研究開発法人 国際農林水産業研究センター | JIRCAS

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
本文フルテキスト

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2013-01-01
作成者SUWA RempeiSAKAI TakeshiSANTOS Joaquim dosSILVA Roseana Pereira daKAJIMOTO TakuyaISHIZUKA MoriyoshiHIGUCHI Niro
著者キーワード

asymptotic height

Brazilian Amazon

REDD+

公開者Japan International Research Center for Agricultural Sciences
データ作成日2013-01-01
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
DOI10.6090/jarq.47.109
権利Japan International Research Center for Agricultural Sciences
言語eng