Respiration controls the unexpected seasonal pattern of carbon flux in an Asian tropical rain forest
Respiration controls the unexpected seasonal pattern of carbon flux in an Asian tropical rain forest
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DOI：
10.1016/j.atmosenv.2010.07.027
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发表时间：
2010-10
影响因子：
5
通讯作者：
Yiping Zhang;Z. Tan;Q. Song;Guirui Yu;Xiaomin Sun
中科院分区：
文献类型：
--
作者：
Yiping Zhang;Z. Tan;Q. Song;Guirui Yu;Xiaomin Sun
热带雨林在全球碳循环中发挥着重要作用。本文报道了中国西南原始热带季节性雨林6年的涡动相关碳通量运动。发现了一个意想不到的生态系统净碳交换的季节模式，碳在雨季损失，在旱季储存。强烈的生态系统呼吸季节性是造成这种季节格局的主要原因。2003年至2008年间，森林每年的二氧化碳净吸收量在每公顷0.98至2.35公吨之间变化。6年平均碳汇强度为每公顷1.68公吨碳。
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 CO2by 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.