High methane emissions from restored Norway spruce swamps in southern Finland over one growing season

IF 1.5 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

Mires and Peat Pub Date : 2016-02-28 DOI:10.19189/MAP.2015.OMB.202

M. Koskinen, Liisa Maanavilja, M. Nieminen, K. Minkkinen, E. Tuittila

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引用次数: 14

Abstract

Forestry-drained peatlands in the boreal region are currently undergoing restoration in order to bring these ecosystems closer to their natural (undrained) state. Drainage affects the methane (CH4) dynamics of a peatland, often changing sites from CH4 sources to sinks. Successful restoration of a peatland would include restoration of not only the surface vegetation and hydrology, but also the microbial populations and thus CH4 dynamics. As a pilot study, CH4 emissions were measured on two pristine, two drained and three restored boreal spruce swamps in southern Finland for one growing season. Restoration was successful in the sense that the water table level in the restored sites was significantly higher than in the drained sites, but it was also slightly higher than in the pristine sites. The restored sites were surprisingly large sources of CH4 (mean emissions of 52.84 mg CH4 m-2 d-1), contrasting with both the pristine (1.51 mg CH4 m-2 d-1) and the drained sites (2.09 mg CH4 m-2 d-1). More research is needed to assess whether the high CH4 emissions observed in this study are representative of restored spruce mires in general.

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芬兰南部恢复的挪威云杉沼泽在一个生长季节释放出大量甲烷

北方地区的森林排水泥炭地目前正在进行恢复，以使这些生态系统更接近其自然(不排水)状态。排水影响泥炭地的甲烷(CH4)动态，经常改变CH4源到汇的位置。泥炭地的成功恢复不仅包括地表植被和水文的恢复，还包括微生物种群和CH4动态的恢复。作为一项试点研究，测量了芬兰南部两个原始、两个排水和三个恢复的北方云杉沼泽在一个生长季节的甲烷排放量。恢复是成功的，因为恢复地点的地下水位明显高于排水地点，但也略高于原始地点。与原始地(1.51 mg CH4 m-2 d-1)和排水地(2.09 mg CH4 m-2 d-1)相比，恢复地是惊人的CH4大排放源(平均排放52.84 mg CH4 m-2 d-1)。需要更多的研究来评估本研究中观察到的高CH4排放是否在总体上代表了恢复的云杉林。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Mires and Peat ENVIRONMENTAL SCIENCES-

CiteScore

2.30

自引率

16.70%

发文量

审稿时长

33 weeks

期刊介绍： Mires and Peat is a peer-reviewed internet journal focusing specifically on mires, peatlands and peat. As a truly “free-to-users” publication (i.e. NO CHARGES to authors OR readers), it is immediately accessible to readers and potential authors worldwide. It is published jointly by the International Peatland Society (IPS) and the International Mire Conservation Group (IMCG). Mires and Peat is indexed by Thomson Reuters Web of Science (2017 Impact Factors: 1.326 [two-year] and 1.638 [five-year]), Elsevier Scopus, EBSCO Environment Complete, CABI Abstracts, CSA Proquest (including their Aquatic Science and Fisheries Abstracts ASFA, Ecology, Entomology, Animal Behavior, Aqualine and Pollution databases) and Directory of Open Access Journals (DOAJ). Mires and Peat also participates in the CABI Full Text Repository, and subscribes to the Portico E-journal Preservation Service (LTPA). Mires and Peat publishes high-quality research papers on all aspects of peatland science, technology and wise use, including: ecology, hydrology, survey, inventory, classification, functions and values of mires and peatlands; scientific, economic and human aspects of the management of peatlands for agriculture, forestry, nature conservation, environmental protection, peat extraction, industrial development and other purposes; biological, physical and chemical characteristics of peat; and climate change and peatlands. Short communications and review articles on these and related topics will also be considered; and suggestions for special issues of the Journal based on the proceedings of conferences, seminars, symposia and workshops will be welcomed. The submission of material by authors and from countries whose work would otherwise be inaccessible to the international community is particularly encouraged.