Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR020428 |
The effect of sampling effort on estimates of methane ebullition from peat | |
Ramirez, Jorge A.1,2; Baird, Andy J.1; Coulthard, Tom J.3 | |
2017-05-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Switzerland |
英文摘要 | We investigated the effect of sample size and sampling duration on methane bubble flux (ebullition) estimates from peat using a computer model. A field scale (10 m), seasonal (>100 days) simulation of ebullition from a two-dimensional (2-D) structurally varying peat profile was modeled at fine spatial resolution (1 mm x 1 mm). The spatial and temporal scale of this simulation was possible because of the computational efficiency of the reduced-complexity approach that was implemented, and patterns of simulated ebullition were consistent with those found in the field and laboratory. The simulated ebullition from the peat profile suggested that decreases in peat porositywhich cause increases in gas storageproduce ebullition that becomes increasingly patchy in space and erratic in time. By applying different amounts of spatial and temporal sampling effort, it was possible to determine the uncertainty in ebullition estimates from the peatland. The results suggest that traditional methods to measure ebullition can equally overestimate and underestimate flux by 20% and large ebullition events can lead to large overestimations of flux when sampling effort is low. Our findings support those of field studies, and we recommend that ebullition should be measured frequently (hourly to daily) and at many locations (n>14). |
英文关键词 | peatland methane ebullition sampling effort porosity |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403712100038 |
WOS关键词 | NORTHERN PEATLANDS ; BIOGENIC GAS ; SOILS ; FLUX ; DYNAMICS ; BUBBLES ; DECOMPOSITION ; PERMAFROST ; EMISSIONS ; TRANSPORT |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/22000 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Leeds, Sch Geog, Leeds, W Yorkshire, England; 2.Univ Bern, Inst Geog, Bern, Switzerland; 3.Univ Hull, Sch Environm Sci, Kingston Upon Hull, N Humberside, England |
推荐引用方式 GB/T 7714 | Ramirez, Jorge A.,Baird, Andy J.,Coulthard, Tom J.. The effect of sampling effort on estimates of methane ebullition from peat[J]. WATER RESOURCES RESEARCH,2017,53(5). |
APA | Ramirez, Jorge A.,Baird, Andy J.,&Coulthard, Tom J..(2017).The effect of sampling effort on estimates of methane ebullition from peat.WATER RESOURCES RESEARCH,53(5). |
MLA | Ramirez, Jorge A.,et al."The effect of sampling effort on estimates of methane ebullition from peat".WATER RESOURCES RESEARCH 53.5(2017). |
条目包含的文件 | 条目无相关文件。 |
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