Japan Geoscience Union Meeting 2015

Presentation information


Symbol A (Atmospheric and Hydrospheric Sciences) » A-CG Complex & General

[A-CG30] Material circulations in Terrestrial Ecosystem: Water, Carbon and Nitrogen etc.

Mon. May 25, 2015 9:00 AM - 10:45 AM 301B (3F)

Convener:*Tomomichi Kato(Research Faculty of Agriculture, Hokkaido University), Takashi Hirano(Research Faculty of Agriculture, Hokkaido University), Hisashi Sato(Department of Environmental Geochemical Cycle Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC)), Ryuichi Hirata(National Institute for Environmental Studies), Chair:Takashi Hirano(Research Faculty of Agriculture, Hokkaido University)

9:45 AM - 10:00 AM

[ACG30-04] Control of Soil Carbon Dynamic of Southeast Asian Ecosystems

*Naishen LIANG1, Munemasa TERAMOTO1, Zhenghong TANG2, Christine D. Fletcher3 (1.NIES, 2.XTBG, 3.FRIM)

Keywords:Automated chamber, LULUC, moisture, soil carbon, tropical ecosystem

The tropical ecosystems have been estimated to be a large carbon source (1.3 Pg C yr-1) due to deforestation and forest degradation, even the global terrestrial carbon sink has been large (1.1 Pg C yr-1) in recent decades. Reducing Emissions from Deforestation and Forest Degradation (REDD) is an effort to create a financial value for the carbon stored in forests, offering incentives for tropical region to reduce emissions from forested lands and invest in low-carbon paths to sustainable development. The ultimate goal of this study is to update REDD mechanism through improved forest management by evaluation of effects of logging and land-use change on soil carbon emission of tropical forests. This study was conducted in a lowland primary forest at Pasoh Forest Reserve (2o58'N, 102o18'E; 75~150m a.s.l.) and a mountainous tropical forests at Temenggor concession area (5o33'N, 101o36'E; 800~900m a.s.l.) in Peninsular Malaysia. About 50~65% biomass was harvested and soil temperature increased about 3oC with SMS, resulting value of the carbon stock lost about 2,577 US$ ha-1 following the first year of logging. On the other hand, under low-impact harvest condition, only about 1,773 US$ ha-1 was lost following the first year of logging. Result suggests that this low-impact harvest system would achieve about 804 US$ ha-1 of REDD credit partially contributed from mitigating soil degradation of about 169 US$ ha-1.