Tropics
Online ISSN : 1882-5729
Print ISSN : 0917-415X
ISSN-L : 0917-415X
ORIGINAL ARTICLE
Spatiotemporal changes in biomass after selective logging in a lowland tropical rainforest in Peninsular Malaysia
Toshinori Okuda, Ken Shima, Toshihiro Yamada, Tetsuro Hosaka, Kaoru Niiyama, Yoshiko Kosugi, Tsuyoshi Yoneda, Mazlan Hashim, Eng Seng Quah, Leng Guan Saw
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Keywords: Forest regeneration, Lowland dipterocarp forest, Stand structure, Annual rainfall, Topography
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2021 Volume 30 Issue 2 Pages 11-23

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Abstract

We studied biomass changes in a lowland tropical rain forest in the Pasoh Forest Reserve of Peninsular Malaysia after selective logging in 1958. A tree census was undertaken every 2 years from 1998 to 2012 in a 6-ha logged forest plot. Total aboveground biomass (AGB) was 72 % of that in a primary forest plot within the same reserve in 1998, but reached 87 % in 2012. AGB regrowth was spatially variable within the logged forest plot and was much less in swampy areas than in upland areas. The overall annual growth rate of AGB in the logged forest throughout the study period was 1.5 % and slowed (to 0.6 %) in a dry period (2004‐2006). The biomass of large trees (DBH≥50 cm) increased by 56 % during the study period, but amounted to only 58 % of the biomass of the corresponding size class in the primary forest, suggesting that stand structure is still recovering from logging. Spatiotemporal variation in AGB recovery after logging needs to be taken into account for logging and subsequent management of the tropical lowland forest biome.

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© 2021 The Japan Society of Tropical Ecology
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