Net Exchange of CO2 in a Mid-Latitude Forest
Net Exchange of CO2 in a Mid-Latitude Forest
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DOI：
10.1126/science.260.5112.1314
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发表时间：
1993-05
期刊：
影响因子：
56.9
通讯作者：
K. Tory;J. Gnarra;Masahiro Yao;F. Duh;M. Orcutt;T. Stackhouse;I. Kuzmin;William Modi;L. Geil-L.-Ge
中科院分区：
文献类型：
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作者：
K. Tory;J. Gnarra;Masahiro Yao;F. Duh;M. Orcutt;T. Stackhouse;I. Kuzmin;William Modi;L. Geil-L.-Ge
采用涡流相关法，对1990年4月至1991年12月在马萨诸塞州中部落叶林中连续测量的二氧化碳净生态系统交换量进行了测量。年每公顷净吸收碳量为 3.7 × 0.7 吨。根据夜间交换和土壤温度之间的关系计算，生态系统呼吸为每年每公顷 7.4 公吨碳，这意味着生态系统总生产量为每年每公顷 11.1 公吨碳。观察到的碳积累率反映了 1800 年代农业发展的复苏。碳吸收率明显高于全球碳研究中温带森林的假设值。温带森林的碳储存在确定未来大气二氧化碳浓度方面可以发挥重要作用。
The eddy correlation method was used to measure the net ecosystem exchange of carbon dioxide continuously from April 1990 to December 1991 in a deciduous forest in central Massachusetts. The annual net uptake was 3.7 � 0.7 metric tons of carbon per hectare per year. Ecosystem respiration, calculated from the relation between nighttime exchange and soil temperature, was 7.4 metric tons of carbon per hectare per year, implying gross ecosystem production of 11.1 metric tons of carbon per hectare per year. The observed rate of accumulation of carbon reflects recovery from agricultural development in the 1800s. Carbon uptake rates were notably larger than those assumed for temperate forests in global carbon studies. Carbon storage in temperate forests can play an important role in determining future concentrations of atmospheric carbon dioxide.