A review of field and laboratory spectral measurements of coniferous forest components

0521502 - ÚVGZ 2020 US eng A - Abstract
Rautiainen, M. - Lukeš, Petr - Homolová, Lucie - Hovi, A. - Mottus, M.
A review of field and laboratory spectral measurements of coniferous forest components.
ForestSat 2018 Entering a New Era in Forest Observations and Analysis. Maryland: ForestSat 2018, 2018 - (Dubayah, R.; Masherk, J.). s. 178-179
[ForestSAT 2018 Entering a New Era in Forest Observation and Analysis. 01.10.2018-05.10.2018, Maryland]
Institutional support: RVO:86652079
Keywords : remote senisng * spectral properties * boreal forest
OECD category: Remote sensing

Coniferous species are present in almost all major vegetation biomes on Earth, though they are the most abundant in the northern hemisphere where they form the northern tree and forest lines close to the Arctic Circle. Monitoring coniferous forests with satellite and airborne remote sensing is active due to the forests’ great ecological and economic importance. We review the current understanding of spectral behavior of different components forming coniferous forests. We look at the spatial, directional and seasonal variations in needle, shoot, woody element and understory spectra in coniferous forests based on measurements. To identify which coniferous species and geographical regions have been the most investigated, we went through all openly available datasets containing spectra of coniferous trees’ elements, as well as publications in which needle, shoot, bark or understory spectra had been measured, even if the data are not openly accessible. Despite the fact that coniferous structures are often complex and difficult to measure, a large number of efforts have been made to collect empirical data on coniferous forests’ spectra in Northern and Central Europe and North America. The number of scientific studies especially on the spectral properties of coniferous needles has notably increased during the past decade: based on our literature review, approximately 40% of the studies reporting e.g., needle spectral data have been published after 2010, and 75% of the studies have been published after 2000. Our literature review shows that, in general, the spectral properties of coniferous forests growing in the boreal biome are better documented than the spectral properties of coniferous forests elsewhere. For boreal coniferous forests, there are already a few open access data sets on needle and bark spectra for key species and one open access data set on understory spectra.
Permanent Link: http://hdl.handle.net/11104/0306107