Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.10.005 |
Comparison of lidar- and allometry-derived canopy height models in an eastern deciduous forest | |
Sullivan, Franklin B.1; Ducey, Mark J.2; Orwig, David A.3; Cook, Bruce4; Palace, Michael W.1,5 | |
2017-12-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2017 |
卷号 | 406 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Tree crown geometry and height, especially when coupled with remotely sensed data, can aid in the characterization of tree and forest structure. In this study, we develop mixed-effects model allometric equations for tree height, crown radius, and crown depth using data collected on 374 trees across 14 species within the extent of the joint Center for Tropical Forest Science (CTFS) and Smithsonian Institute's Forest Global Earth Observatory (ForestGEO) MegaPlot on Prospect Hill at Harvard Forest, Massachusetts. We applied allometry to a census of the 35-ha plot on Prospect Hill to evaluate tree height and crown radius estimates using a lidar canopy height model. We found significant relationships using stem diameter-at-breast-height (DBH) and species to estimate tree height (pr(2) = 0.70, RMSE = 2.96 m), crown depth (pr(2) = 0.35, RMSE = 3.24 m) and crown radius (pr(2) = 0.43, RMSE = 1.22 m). Using Fast Fourier Transforms (FFTs), we compared the power spectra of a lidar canopy height model to five synthetic canopy height models derived from allometric estimates of height and crown radius. The FFTs showed good agreement between lidar and synthetic canopy height models (CHMs) at spatial wavelengths longer than 64 m, or about the distance across 3-4 dominant tree crowns, and poorer agreement at shorter spatial wavelengths, which we attribute to the simple crown shape applied to modeled crowns and a lack of crown overlap in the synthetic CHMs compared to the lidar CHM. At the tree level, some species exhibited tight links between lidar-measured height and estimated tree height (e.g., Quercus rubra, Quercus velutina, Pinus strobus), suggesting height allometry provided reasonable estimates of tree height for some species despite a negative bias in the synthetic canopy height models relative to the lidar canopy height model. |
英文关键词 | Crown allometry Tree height Canopy height model Mixed effects modeling Fast Fourier transform |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416395800010 |
WOS关键词 | REMOTE-SENSING IMAGERY ; STAND-DENSITY INDEX ; TREE HEIGHT ; AMAZON FOREST ; CARBON STOCKS ; DOUGLAS-FIR ; BIOMASS ; DIAMETER ; GROWTH ; SHADE |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
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/22692 |
专题 | 气候变化 |
作者单位 | 1.Univ New Hampshire, Inst Earth Oceans & Space, Earth Syst Res Ctr, Durham, NH 03824 USA; 2.Univ New Hampshire, Dept Nat Resources & Environm, Durham, NH 03824 USA; 3.Harvard Univ, Harvard Forest, Petersham, MA USA; 4.NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA; 5.Univ New Hampshire, Dept Earth Sci, Durham, NH 03824 USA |
推荐引用方式 GB/T 7714 | Sullivan, Franklin B.,Ducey, Mark J.,Orwig, David A.,et al. Comparison of lidar- and allometry-derived canopy height models in an eastern deciduous forest[J]. FOREST ECOLOGY AND MANAGEMENT,2017,406. |
APA | Sullivan, Franklin B.,Ducey, Mark J.,Orwig, David A.,Cook, Bruce,&Palace, Michael W..(2017).Comparison of lidar- and allometry-derived canopy height models in an eastern deciduous forest.FOREST ECOLOGY AND MANAGEMENT,406. |
MLA | Sullivan, Franklin B.,et al."Comparison of lidar- and allometry-derived canopy height models in an eastern deciduous forest".FOREST ECOLOGY AND MANAGEMENT 406(2017). |
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