北方泥炭地植被与气候变化研究

Review of Vegetation and Climate Change in Northern Peatlands

首先,论述了气候变暖对于北方泥炭地植被的影响,认为气候变暖对北方泥炭地植被变化的影响具有复杂性。其次,论述了三种主要的北方泥炭地植被对气候变化的影响,认为对以泥炭藓与灌木为主的泥炭地而言,随着气候变暖会使得泥炭地产生较高的碳累积速率,泥炭地碳汇增强,从而使得泥炭地对气候变暖产生负反馈;但是对于以禾本科植物为主的泥炭地而言,泥炭地会产生更多的碳排放,碳汇减弱,从而使得泥炭地对气候变暖产生一定的正反馈。最后,提出对北方泥炭地在未来气候变化中的作用需要更多的研究。

The paper discussed the effects of climate warming on vegetation change in northern peatland.It is observed that the effects of climate warming on vegetation change in northern peatland are complicated.The effects of three major northern peatland vegetation on climate change are discussed.The peatland dominated by sphagnum moss and shrubs will have a higher carbon accumulation rate with the warming of the climate as carbon sink of peatland enhanced,so that the peatland will have a negative feedback to climate warming.However,for the peatlands dominated by gramineous plants,peatlands will produce more carbon emissions and weaken the carbon sink,which makes the peatlands have a certain positive feedback to climate warming.It is suggested that more research is needed on the role of northern peatlands in future climate change.