Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aabcd5 |
Evaluating the influence of spatial resolution of Landsat predictors on the accuracy of biomass models for large-area estimation across the eastern USA | |
Deo, Ram K.1,2; Domke, Grant M.3; Russell, Matthew B.1; Woodall, Christopher W.4; Andersen, Hans-Erik5 | |
2018-05-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Aboveground biomass (AGB) estimates for regional-scale forest planning have become cost-effective with the free access to satellite data from sensors such as Landsat and MODIS. However, the accuracy of AGB predictions based on passive optical data depends on spatial resolution and spatial extent of target area as fine resolution (small pixels) data are associated with smaller coverage and longer repeat cycles compared to coarse resolution data. This study evaluated various spatial resolutions of Landsat-derived predictors on the accuracy of regional AGB models at three different sites in the eastern USA: Maine, Pennsylvania-New Jersey, and South Carolina. We combined national forest inventory data with Landsat-derived predictors at spatial resolutions ranging from 30-1000m to understand the optimal spatial resolution of optical data for large-area (regional) AGB estimation. Ten generic models were developed using the data collected in 2014, 2015 and 2016, and the predictions were evaluated (i) at the county-level against the estimates of the USFS Forest Inventory and Analysis Program which relied on EVALIDator tool and national forest inventory data from the 2009-2013 cycle and (ii) within a large number of strips (similar to 1 km wide) predicted via LiDAR metrics at 30 m spatial resolution. The county-level estimates by the EVALIDator and Landsat models were highly related (R-2 > 0.66), although the R-2 varied significantly across sites and resolution of predictors. The mean and standard deviation of county-level estimates followed increasing and decreasing trends, respectively, with models of coarser resolution. The Landsat-based total AGB estimates were larger than the LiDAR-based total estimates within the strips, however the mean of AGB predictions by LiDAR were mostly within one-standard deviations of the mean predictions obtained from the Landsat-based model at any of the resolutions. We conclude that satellite data at resolutions up to 1000 m provide acceptable accuracy for continental scale analysis of AGB. |
英文关键词 | above-ground forest biomass large-area estimation Landsat data spatial resolution of predictors LiDAR design-based estimates |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000431402800002 |
WOS关键词 | REMOTE-SENSING DATA ; INVENTORY ATTRIBUTES ; TIME-SERIES ; LIDAR ; FORESTS ; VOLUME ; SIZE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
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/33177 |
专题 | 气候变化 |
作者单位 | 1.Univ Minnesota, Dept Forest Resources, 1530 Cleveland Ave North, St Paul, MN 55108 USA; 2.Minnesota Dept Nat Resources, Resource Assessment Off, Div Forestry, Grand Rapids, MN 55744 USA; 3.US Forest Serv, USDA, Northern Res Stn, Forest Inventory & Anal, 1992 Folwell Ave, St Paul, MN 55108 USA; 4.US Forest Serv, USDA, Ctr Res Ecosyst Change, Northern Res Stn, 271 Mast Rd, Durham, NH 03824 USA; 5.Univ Washington, US Forest Serv, USDA, Pacific Northwest Res Stn, Seattle, WA 98195 USA |
推荐引用方式 GB/T 7714 | Deo, Ram K.,Domke, Grant M.,Russell, Matthew B.,et al. Evaluating the influence of spatial resolution of Landsat predictors on the accuracy of biomass models for large-area estimation across the eastern USA[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(5). |
APA | Deo, Ram K.,Domke, Grant M.,Russell, Matthew B.,Woodall, Christopher W.,&Andersen, Hans-Erik.(2018).Evaluating the influence of spatial resolution of Landsat predictors on the accuracy of biomass models for large-area estimation across the eastern USA.ENVIRONMENTAL RESEARCH LETTERS,13(5). |
MLA | Deo, Ram K.,et al."Evaluating the influence of spatial resolution of Landsat predictors on the accuracy of biomass models for large-area estimation across the eastern USA".ENVIRONMENTAL RESEARCH LETTERS 13.5(2018). |
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