Journal
ATMOSPHERIC ENVIRONMENT
Volume 44, Issue 32, Pages 3886-3893Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.atmosenv.2010.07.027
Keywords
Eddy covariance; Intensive leaf change; Carbon sink; Seasonal drought
Funding
- National Science Foundation of China [40571163]
- Chinese Academy of Sciences [KJCX2-YW-432-1, KZCX2-YW-Q1-05-04, KZCX1-SW-01-01A]
- Development Program in Basic Science of China [2002CB412501, 2010CB833501]
- Natural Science Foundation of Yunnan Province, China [0001461KP1]
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Tropical rain forests play important roles in the global carbon cycle. We report a six-year eddy covariance carbon flux campaign in a primary tropical seasonal rain forest in southwest China. An unexpected seasonal pattern of net ecosystem carbon exchange was detected, with carbon lost during the rainy season and stored in the dry season. Strong seasonality of ecosystem respiration was suggested to primarily account for this seasonal pattern. The annual net uptake of CO2 by the forest varied from 0.98 to 2.35 metric tons of carbon per hectare between 2003 and 2008. 6-year averaged sink strength was 1.68 metric tons of carbon per hectare. (C) 2010 Elsevier Ltd. All rights reserved.
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