Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.rse.2016.05.019 |
Ultra-fine grain landscape-scale quantification of dryland vegetation structure with drone-acquired structure-from-motion photogrammetry | |
Cunliffe, Andrew M.1; Brazier, Richard E.1; Anderson, Karen2 | |
通讯作者 | Cunliffe, Andrew M. |
来源期刊 | REMOTE SENSING OF ENVIRONMENT
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ISSN | 0034-4257 |
EISSN | 1879-0704 |
出版年 | 2016 |
卷号 | 183页码:129-143 |
英文摘要 | Covering 40% of the terrestrial surface, dryland ecosystems characteristically have distinct vegetation structures that are strongly linked to their function. Existing survey approaches cannot provide sufficiently fine-resolution data at landscape-level extents to quantify this structure appropriately. Using a small, unpiloted aerial system (UAS) to acquire aerial photographs and processing theses using structure-from-motion (SfM) photogrammetry, three-dimensional models were produced describing the vegetation structure of semi-arid ecosystems at seven sites across a grass-to shrub transition zone. This approach yielded ultra-fine (<1 cm(2)) spatial resolution canopy height models over landscape-levels (10 ha), which resolved individual grass tussocks just a few cm(3) in volume. Canopy height cumulative distributions for each site illustrated ecologically-significant differences in ecosystem structure. Strong coefficients of determination (r(2) from 0.64 to 0.95) supported prediction of above-ground biomass from canopy volume. Canopy volumes, above-ground biomass and carbon stocks were shown to be sensitive to spatial changes in the structure of vegetation communities. The grain of data produced and sensitivity of this approach is invaluable to capture even subtle differences in the structure (and therefore function) of these heterogeneous ecosystems subject to rapid environmental change. The results demonstrate how products from inexpensive UAS coupled with SfM photogrammetry can produce ultra-fine grain biophysical data products, which have the potential to revolutionise scientific understanding of ecology in ecosystems with either spatially or temporally discontinuous canopy cover. (C) 2016 The Authors. Published by Elsevier Inc. |
英文关键词 | Semi-arid Rangeland Grassland Shrubland Vegetation Biophysical Biomass UAV UAS SfM Canopy height model |
类型 | Article |
语种 | 英语 |
国家 | England |
收录类别 | SCI-E |
WOS记录号 | WOS:000382345400011 |
WOS关键词 | UNMANNED AERIAL VEHICLES ; SEMIARID ECOSYSTEMS ; ABOVEGROUND BIOMASS ; OVERLAND-FLOW ; ALLOMETRIC MODELS ; FOREST BIOMASS ; DESERT GRASSES ; CARBON CONTENT ; TREE COVER ; SOIL |
WOS类目 | Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology |
WOS研究方向 | Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/196005 |
作者单位 | 1.Univ Exeter, Geog, Amory Bldg, Exeter, Devon, England; 2.Univ Exeter, Environm & Sustainabil Inst, Exeter, Devon, England |
推荐引用方式 GB/T 7714 | Cunliffe, Andrew M.,Brazier, Richard E.,Anderson, Karen. Ultra-fine grain landscape-scale quantification of dryland vegetation structure with drone-acquired structure-from-motion photogrammetry[J],2016,183:129-143. |
APA | Cunliffe, Andrew M.,Brazier, Richard E.,&Anderson, Karen.(2016).Ultra-fine grain landscape-scale quantification of dryland vegetation structure with drone-acquired structure-from-motion photogrammetry.REMOTE SENSING OF ENVIRONMENT,183,129-143. |
MLA | Cunliffe, Andrew M.,et al."Ultra-fine grain landscape-scale quantification of dryland vegetation structure with drone-acquired structure-from-motion photogrammetry".REMOTE SENSING OF ENVIRONMENT 183(2016):129-143. |
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