Findings through the AsiaFlux network and a view toward the future

doi:10.1360/gs050203

Journal of Geographical Sciences ›› 2005, Vol. 15 ›› Issue (2): 142-148.doi: 10.1360/gs050203

• Climate and Environmental Change • Previous Articles Next Articles

Findings through the AsiaFlux network and a view toward the future

YAMAMOTO S.¹, SAIGUSA N.¹, GAMO M.¹, FUJINUMA Y.², INOUE G.², HIRANO T.³

1. National Institute of Advanced Industrial Sciences and Technology, Tsukuba, Japan;

2. Center for Global Environmental Research, National Institute for Environmental Studies, Tsukuba, Japan;

3. Graduate School of Agriculture, Hokkaido University, Sapporo, Japan

Received:2004-03-10 Revised:2004-10-08 Online:2005-06-25 Published:2005-06-25
Supported by:
Global Environment Research Fund of the Ministry of the Environment, Japan; AsiaFLUX; ChinaFLUX

Abstract

Abstract:

The preliminary results of long-term CO₂ flux measurements at forest sites in East Asia are explained and compared with each other. The features of seasonal variation of CO₂ fluxes are different among deciduous-broadleaf, evergreen-coniferous, deciduous-coniferous and tropical forests in East Asia, and the causes of difference are discussed. The integrated yearly NEP (net ecosystem production) estimated from the CO₂ flux by eddy covariance method in various forests of East Asia has a notable difference in the range of 2 to 8 tC ha-1 yr^-1. The main factors of this difference are the annual mean temperature and tree species. Furthermore, the remaining issues are discussed, such as the quantitative estimation of the CO₂ flux by the eddy covariance method and the synthetic analysis of the carbon budget under collaborations with biological survey.

Key words: net ecosystem production, forest sites, carbon budget, synthetic analysis

YAMAMOTO S., SAIGUSA N., GAMO M., FUJINUMA Y., INOUE G., HIRANO T.. Findings through the AsiaFlux network and a view toward the future[J].Journal of Geographical Sciences, 2005, 15(2): 142-148.

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Findings through the AsiaFlux network and a view toward the future

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