Effect of plant functional type on methane dynamics in a restored minerotrophic peatland
Effect of plant functional type on methane dynamics in a restored minerotrophic peatland
复制标题
植物功能类型对恢复矿营养泥炭地甲烷动态的影响
作者：
M. Strack;K. Mwakanyamale;Golnoush Hassanpour Fard;M. Bird;Vicky Bérubé;L. Rochefort
背景和AimsPeatland甲烷（CH4）通量可能因植物类型而异，然而，在混合社区，每个物种的具体作用是很难区分的。本研究的目的是确定个人和相互作用的影响，苔藓，禾本科和灌木植物功能类型的CH4动态的实验种植的地块在rewetted minerotrophic peagland.MethodsWe测量CH4通量，孔隙水CH4浓度和CH4生产和氧化电位在纯林重新引入Tomenthypnum nitens（Hedw.）。Loeske、水苔草（Carex aquatilis Wahlenb）或杨梅（Myrica gale L.），以及T. nitens + C. aquatilis和T. nitens + M.盖尔甲烷通量也测量了裸露泥炭plots.ResultsThe存在的两个禾本科C。aquatilis和灌木M.大风导致近地表泥炭（10厘米）的最高CH4生产潜力。苔藓的存在（T. nitens）和C. aquatilis显着增加CH 4氧化电位。地下水位的高低对CH4通量有显著的控制作用，而C.即使在干燥的地块上，aquatilis也保持较高的通量。包括C. aquatilis有显着较低的孔隙水CH4浓度在30 cm深度，可能反映CH4氧化和transmitt.ConclusionsManagement恢复网站旨在减少CH4通量应侧重于水文，即地下水位的位置。禾本科植物的存在增强CH4通量，而苔藓的存在可能会导致较低的CH4排放。
Background and AimsPeatland methane (CH4) fluxes may vary between plant types; however, in mixed communities, the specific role of each species is difficult to distinguish. The goal of this study was to determine the individual and interacting effect of moss, graminoid and shrub plant functional types on CH4 dynamics of experimentally planted plots in a rewetted minerotrophic peatland.MethodsWe measured CH4 flux, pore water CH4 concentration and CH4 production and oxidation potential in pure stands of reintroduced Tomenthypnum nitens (Hedw.) Loeske, Carex aquatilis Wahlenb, or Myrica gale L., as well as mixtures of T. nitens + C. aquatilis and T. nitens + M. gale. Methane flux was also measured on bare peat plots.ResultsThe presence of both the graminoid C. aquatilis and the shrub M. gale resulted in the highest CH4 production potential in near surface peat (10 cm). The presence of moss (T. nitens) and C. aquatilis significantly increased CH4 oxidation potential. Water table position was a significant control on CH4 flux, but the presence of C. aquatilis maintained higher flux even at dry plots. Plots including C. aquatilis had significantly lower pore water CH4 concentration at 30 cm depth, likely reflecting CH4 oxidation and transport.ConclusionsManagement of restored sites aiming to reduce CH4 flux should focus on hydrology, i.e. water table position. The presence of graminoids enhances CH4 flux, while moss presence may result in lower CH4 emission.
影响因子：
8.8
作者：
Susan E. Ward;N. Ostle;S. Oakley;H. Quirk;P. Henrys;R. Bardgett
通讯作者：
Susan E. Ward;N. Ostle;S. Oakley;H. Quirk;P. Henrys;R. Bardgett
影响因子：
4.8
作者：
Kuiper, Jan J.;Mooij, Wolf M.;Robroek, Bjorn J. M.
通讯作者：
Robroek, Bjorn J. M.
影响因子：
3.7
作者：
Cooper, Mark. D. A.;Evans, Christopher. D.;Freeman, Christopher
通讯作者：
Freeman, Christopher