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排水和泥炭开采可能引起泥炭地CH_4和CO_2等温室气体向大气中的排放量发生相当大的变化。在本研究中,我们采用密闭箱方法(closed chamber)测量了瑞典6个正在开采的泥炭地的CH_4和CO_2通量。结果显示,在沟渠测得的CH_4通量要比矿区条地(strips)高得多,例如,大部分泥炭地的CH_4排放量来自于沟渠。在生长季期间,这些泥炭地的CH_4排放总量(0.41～4.5g/m~2·a)与处于原始状态的泥炭地的情况相似。通过清除沟渠植被,可以使其CH_4的排放量保持较低水平。与CH_4的情况相似,在大多数泥炭地,矿区条地和沟渠都向大气中排放CO_2。在生长季节的排放量(0.23～1.0kg CO_2/m~2·a)主要是由矿区条地造成的。与采矿期间总的泥炭产量相比较而言,这些CO_2排放速率意味着:平均来说,泥炭地约6%的碳流失是由沼泽中微生物分解造成的。
Drainage and peat mining may cause considerable changes in the atmospheric emissions of greenhouse gases such as CH 4 and CO 2 in peatlands. In this study, we measured the CH_4 and CO_2 fluxes of the six peatlands under development in Sweden using the closed chamber method. The results show that CH4 flux measured in ditches is much higher than mine strips. For example, CH4 emissions from most of the peatlands are from ditches. During the growing season, the total CH_4 emissions from these peatlands (0.41-4.5 g / m 2 · a) were similar to those of the peatlands in their original state. By removing ditches, CH 4 emissions can be kept low. Similar to the case of CH_4, in most peatlands, mine areas and ditches emit CO_2 into the atmosphere. Emissions during the growing season (0.23-1.0 kg CO 2 / m 2 · a) are mainly caused by the mining area. Compared to the total peat production during mining, these CO 2 emission rates mean that on average, about 6% of carbon loss from peat is caused by the breakdown of microorganisms in swamps.