Russian boreal peatlands dominate the natural European methane budget

Russian boreal peatlands dominate the natural European methane budget
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俄罗斯北方泥炭地主导欧洲自然甲烷预算

DOI:
10.1088/1748-9326/11/1/014004
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发表时间:
2016
影响因子:
6.7
通讯作者:
Kutzbach
Kutzbach
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Schneider;Jungkunst;Schreiber;Gažovič;Miglovets;Mikhaylov;Grunwald;Erasmi;Wilmking;Kutzbach

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大约60%的欧洲湿地位于俄罗斯的欧洲部分。然而,关于该地区湿地甲烷排放量的数据尚不存在。在这里,我们提出了两个气候不同的年份在俄罗斯欧洲北部泥炭地复杂的甲烷排放测量结果。冬季的通量完全在以前报告的其他北方地区泥炭地的范围内,但夏季的通量大大超过了环极北方地区5-80 mg CH 4 m− 2 d− 1的平均范围。所测得的通量有一半在150至450 mg CH 4 m− 2 d− 1之间。将我们的数据外推到整个俄罗斯欧洲北部地区,表明这些排放量可能高达2.7±1.1 Tg CH 4 a− 1,相当于欧洲湿地年排放量的69%或欧洲年天然甲烷排放总量的33%。2008年,气候条件符合长期平均值,而2011年夏季则更温暖,明显更干燥。与直觉相反,这些条件导致了更高的甲烷排放量,峰值比2008年测量的值高出两倍。由于俄罗斯泥炭地在欧洲湿地面积上占主导地位,其特点是甲烷向大气中的通量非常高,因此很明显,只有对俄罗斯泥炭地有更多的了解,才能实现合理的欧洲甲烷预算。
About 60% of the European wetlands are located in the European part of Russia. Nevertheless, data on methane emissions from wetlands of that area are absent. Here we present results of methane emission measurements for two climatically different years from a boreal peatland complex in European Russia. Winter fluxes were well within the range of what has been reported for the peatlands of other boreal regions before, but summer fluxes greatly exceeded the average range of 5–80 mg CH 4 m− 2 d− 1 for the circumpolar boreal zone. Half of the measured fluxes ranged between 150 and 450 mg CH 4 m− 2 d− 1. Extrapolation of our data to the whole boreal zone of European Russia shows that theses emissions could amount to up to 2.7±1.1 Tg CH 4 a− 1, corresponding to 69% of the annual emissions from European wetlands or 33% of the total annual natural European methane emission. In 2008, climatic conditions corresponded to the long term mean, whereas the summer of 2011 was warmer and noticeably drier. Counterintuitively, these conditions led to even higher CH 4 emissions, with peaks up to two times higher than the values measured in 2008. As Russian peatlands dominate the areal extend of wetlands in Europe and are characterized by very high methane fluxes to the atmosphere, it is evident, that sound European methane budgeting will only be achieved with more insight into Russian peatlands.
DOI: 10.2307/2261594
发表时间: 1995-06-01
期刊: JOURNAL OF ECOLOGY
影响因子: 5.5
作者:
BUBIER, JL
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