Impact of global change and forest management on carbon sequestration in northern forested peatlands
Impact of global change and forest management on carbon sequestration in northern forested peatlands
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全球变化和森林管理对北部森林泥炭地碳固存的影响
DOI：
10.1139/a05-014
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发表时间：
2005
影响因子：
5.7
通讯作者：
Y. Bergeron
中科院分区：
文献类型：
--
作者：
M. Lavoie;D. Paré;Y. Bergeron
北方泥炭地约占全球陆地面积的4%，储存着全球约30%的土壤碳（C）。C积累率在北方泥炭地汇编表明，长期平均速率的C积累24.1克平方米年1。 然而，一些研究表明，在短时间尺度上，并给予适当的条件下，这些生态系统可以表现出非常高的C积累率（高达425克平方米年1）。 泥炭地发育与降水和温度有关，气候变化预计将对该生态系统的C平衡产生重要影响。考虑到预期的气候变化，我们建议，大多数的北方森林泥炭地位于降水预计将增加的地区（加拿大东部，阿拉斯加州，前苏联和芬诺斯堪的纳维亚）将继续作为一个C汇在未来。相比之下，加拿大西部和中部的森林泥炭地，预计降水量将减少，应该有减少其碳封存率和...
Northern peatlands occupy approximately 4% of the global land surface and store about 30% of the global soil carbon (C). A compilation of C accumulation rates in northern peatlands indicated a long-term average rate of C accumulation of 24.1 g m2 year1. However, several studies have indicated that on a short-time scale and given the proper conditions, these ecosystems can exhibit very high rates of C accumulation (up to 425 g m2 year1). Peatland development is related to precipitation and temperature, and climate change is expected to have an important impact on the C balance of this ecosystem. Given the expected climate change, we suggest that most of the northern forested peatlands located in areas where precipitation is expected to increase (eastern Canada, Alaska, FSU, and Fennoscandia) will continue to act as a C sink in the future. In contrast, forested peatlands of western and central Canada, where precipitation is predicted to decrease, should have a reduction in their C sequestration rates an...