Do the rubber plantations in tropical China act as large carbon sinks
Do the rubber plantations in tropical China act as large carbon sinks
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DOI：
10.3832/ifor0891-007
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发表时间：
2014-02
期刊：
影响因子：
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通讯作者：
Q. Song;Z. Tan;Yiping Zhang;L. Sha;Xiao-bao Deng;Yun Deng;Wenjun Zhou;J. Zhao;J. Zhao;X. Zhang;W. Zhao;G.-R. Yu;X. Sun;N. Liang;L.-Y. Yang
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文献类型：
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作者：
Q. Song;Z. Tan;Yiping Zhang;L. Sha;Xiao-bao Deng;Yun Deng;Wenjun Zhou;J. Zhao;J. Zhao;X. Zhang;W. Zhao;G.-R. Yu;X. Sun;N. Liang;L.-Y. Yang
热带次生林和人工林的再生不能抵消热带森林砍伐造成的碳释放，从而决定了热带土地的净碳损失。然而，这一假设仍然存在很大的不确定性。在这里，我们使用生物计量方法来估计净干物质生产和净生态系统生产的橡胶林，在热带东南亚最广泛的种植园类型。根据研究期间所作的生物统计估计，该生态系统是一个碳汇（790 gC m（-2）yr（-1））。用涡度相关法测定了生态系统净碳通量。与基于中性大气条件下测量数据的方法相比，使用FluxNet程序估算的碳预算（904 gC m（-2）yr（-1））更接近生物测定估算值。总的来说，当考虑整个生命周期，包括砍伐现有的热带森林，人工林作为大型碳汇的假设是不支持我们的研究。
The regrowth of tropical secondary forests and plantations can not offset the carbon release caused by tropical deforestation, consequently determining net carbon losses on tropical lands. However, large uncertainties remain in relation to this assumption. Here, we used a biometric method to estimate the net dry matter production and net ecosystem production in a rubber forest, the most widespread plantation type in tropical Southeast Asia. According to biometric estimates made during the study, the ecosystem was a carbon sink (790 gC m(-2) yr(-1)). Net ecosystem carbon fluxes were measured by the eddy covariance method. The carbon budget estimated using the FluxNet procedure (904 gC m(-2) yr(-1)) was closer to the biometric estimates in comparison to a method based on data measured during neutral atmospheric conditions. Overall, when considering the whole life cycle, including deforestation of the prior-existing tropical forest, the hypothesis of plantations serving as large carbon sinks is not supported by our study.