Abstract
Authors
NAKAI Yuichiro, KITAMURA Kenzo, SUZUKI Satoru, ABE Shin
Year
2003
Title
Year-long carbon dioxide exchange above a broadleaf deciduous forest in Sapporo, Northern Japan
Journal
Tellus
Volume
55B
Page
305-312
DOI
DOI: 10.1034/j.1600-0889.2003.01413.x
Keywords
URL
http://www3.interscience.wiley.com/journal/118839067/abstract
Abstract
This paper reports the results of a full year (2000) of measurements of CO
2 flux at a successional forest of mature birch and growing oak with Sasa-bamboo in Sapporo, Japan. Eddy covariance fluxes of CO
2 were obtained using a closed-path infrared gas analyzer. Changes in CO
2 storage under the eddy-flux measurement level were quantified using vertical profiles of the CO
2 concentration. Seasonal variations in net CO
2 exchange between the forest and the atmosphere are discussed in terms of both phenological developments of the forest canopy and micrometeorological variables. To estimate the annual exchange of CO
2, the net CO
2 exchange data both during periods of poor turbulence and during periods of missing data were replaced by simple parametric models based on measurements of soil temperatures and photosynthetically active radiation. The corrected annual carbon sequestration estimate was 260 g C m
-2. The estimates of annual gross carbon gain and loss at the forest were 1120 and 860 g C m
-2.
Site
SAP
Remarks