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在我们近期的论文中得出了陈年土壤有机物的分解过程对温度的敏感程度低于新鲜凋落物这一结论。我们因此作出判断,假设所有土壤有机质分解对温度的敏感程度与新鲜凋落物相同的那些研究,都过高估计了土壤碳的释放对气候变暖的响应。我们的结论是基于对不同温度梯度上土壤碳量和土壤年龄的测定以及模型计算得出的。
In our recent paper, we conclude that the decomposition of aged organic matter in soil is less sensitive to temperature than fresh litter. We therefore make a judgment, assuming that all those studies in which soil organic matter decomposition is as sensitive to temperature as fresh litter have overestimated the response of soil carbon release to climate warming. Our conclusion is based on the determination of soil carbon content and soil age at different temperature gradients and the model calculations.