DOI: 10.1002/2017JG004232
Scopus记录号: 2-s2.0-85044511606
论文题名: UAV Remote Sensing Can Reveal the Effects of Low-Impact Seismic Lines on Surface Morphology, Hydrology, and Methane (CH4) Release in a Boreal Treed Bog
作者: Lovitt J. ; Rahman M.M. ; Saraswati S. ; McDermid G.J. ; Strack M. ; Xu B.
刊名: Journal of Geophysical Research: Biogeosciences
ISSN: 21698953
出版年: 2018
卷: 123, 期: 3 起始页码: 1117
结束页码: 1129
语种: 英语
英文关键词: methane
; microtopography
; peatlands
; remote sensing
; seismic lines
; UAV
Scopus关键词: bog
; boreal forest
; elevation
; geomorphology
; hydrology
; methane
; microtopography
; peatland
; remote sensing
; soil carbon
; unmanned vehicle
; Alberta
; Canada
英文摘要: Peatlands are globally significant stores of soil carbon, where local methane (CH4) emissions are strongly linked to water table position and microtopography. Historically, these factors have been difficult to measure in the field, constraining our capacity to observe local patterns of variability. In this paper, we show how remote sensing surveys conducted from unmanned aerial vehicle (UAV) platforms can be used to map microtopography and depth to water over large areas with good accuracy, paving the way for spatially explicit estimates of CH4 emissions. This approach enabled us to observe—for the first time—the effects of low-impact seismic lines (LIS; petroleum exploration corridors) on surface morphology and CH4 emissions in a treed-bog ecosystem in northern Alberta, Canada. Through compaction, LIS lines were found to flatten the observed range in microtopographic elevation by 46 cm and decrease mean depth to water by 15.4 cm, compared to surrounding undisturbed conditions. These alterations are projected to increase CH4 emissions by 20–120% relative to undisturbed areas in our study area, which translates to a total rise of 0.011–0.027 kg CH4 day−1 per linear kilometer of LIS (~2 m wide). The ~16 km of LIS present at our 61 ha study site were predicted to boost CH4 emissions by 20–70 kg between May and September 2016. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114305
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geography, University of Calgary, Calgary, AB, Canada; Department of Geography, University of Waterloo, Waterloo, ON, Canada; Northern Alberta Institute of Technology, Edmonton, AB, Canada
Recommended Citation:
Lovitt J.,Rahman M.M.,Saraswati S.,et al. UAV Remote Sensing Can Reveal the Effects of Low-Impact Seismic Lines on Surface Morphology, Hydrology, and Methane (CH4) Release in a Boreal Treed Bog[J]. Journal of Geophysical Research: Biogeosciences,2018-01-01,123(3)