DOI: 10.1016/j.jag.2014.03.006
Scopus记录号: 2-s2.0-84904501343
论文题名: A monitoring protocol for vegetation change on Irish peatlandand heath
作者: O'Connell J ; , Connolly J ; , Holden N ; M
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2014
卷: 31, 期: 1 起始页码: 130
结束页码: 142
语种: 英语
英文关键词: Change detection
; Cross calibration
; EVI2
; Heaths
; Peatlands
Scopus关键词: calibration
; health monitoring
; multispectral image
; peatland
; pixel
; satellite data
; vegetation dynamics
; Ireland
英文摘要: Amendments to Articles 3.3 and 3.4 of the Kyoto Protocol have meant that detection of vegetation change may now form an interracial part of national soil carbon stocks. In this study multispectral multi-platform satellite data was processed to detect change to the surface vegetation of four peatland sites and one heath in Ireland. Spectral and spatial thresholds were used on difference images between master and slave data in the extraction of temporally invariant targets for multi-platform cross calibration. The Kolmogorov-Smirnov test was used to evaluate any difference in the cumulative probability distributions of the master, slave and calibrated slave data as expressed by the D statistic, with values reduced by an average of 89.7% due to the cross calibration procedure. A change detection model was created which incorporated a spatial threshold of 9 pixels and a standard deviation (SD) spectral threshold. Kappa accuracy values for the five sites ranged from 80 to 97%, showing that 1.5 SD was the optimum spectral threshold for detecting vegetation change. Change detection results showed mean percentage change ranging from 2.11 to 3.28% of total area and cumulative change over the observed time period of between15.24 and 49.27% of total area. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79792
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: School of Biology, Faculty of Biological Sciences, University of Leeds, United Kingdom; Department of Physical Geography and Ecosystem Science, Lund University, Sölvegatan 12, SE-223 62 Lund, Sweden; School of Biosystems Engineering, Agriculture and Food Science Centre, University College Dublin, Belfield, Dublin 4, Ireland
Recommended Citation:
O'Connell J,, Connolly J,, Holden N,et al. A monitoring protocol for vegetation change on Irish peatlandand heath[J]. International Journal of Applied Earth Observation and Geoinformation,2014-01-01,31(1)