Browsing by Author "Wulder, Michael A"
Now showing items 1-4 of 4
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Aboveground forest biomass derived using multiple dates of WorldView-2 stereo-imagery: quantifying the improvement in estimation accuracy
Vastaranta, Mikko; Yu, Xiaowei; Luoma, Ville; Karjalainen, Mika; Saarinen, Ninni; Wulder, Michael A; White, Joanne C; Persson, Henrik J; Hollaus, Markus; Yrttimaa, Tuomas; Holopainen, Markus; Hyyppä, Juha (Informa UK Limited, 2018)The aim of this study was to investigate the capabilities of two date satellite-derived image-based point clouds (IPCs) to estimate forest aboveground biomass (AGB). The data sets used include panchromatic WorldView-2 ...Tieteelliset aikakauslehtiartikkelit
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Assessing the Effects of Sample Size on Parametrizing a Taper Curve Equation and the Resultant Stem-Volume Estimates
Saarinen, Ninni; Kankare, Ville; Pyörälä, Jiri; Yrttimaa, Tuomas; Liang, Xinlian; Wulder, Michael A; Holopainen, Markus; Hyyppä, Juha; Vastaranta, Mikko (MDPI AG, 2019)Large and comprehensive datasets, traditionally based on destructive stem analysis or other labor-intensive approaches, are commonly considered as a necessity in developing stem-volume equations. The aim here was to ...Tieteelliset aikakauslehtiartikkelit
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Confirmation of post-harvest spectral recovery from Landsat time series using measures of forest cover and height derived from airborne laser scanning data
White, Joanne C; Saarinen, Ninni; Kankare, Ville; Wulder, Michael A; Hermosilla, Txomin; Coops, Nicholas C; Pickell, Paul D; Holopainen, Markus; Hyyppä, Juha; Vastaranta, Mikko (Elsevier BV, 2018)Landsat time series (LTS) enable the characterization of forest recovery post-disturbance over large areas; however, there is a gap in our current knowledge concerning the linkage between spectral measures of recovery ...Tieteelliset aikakauslehtiartikkelit
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Landsat archive holdings for Finland: opportunities for forest monitoring
Saarinen, Ninni; White, Joanne C; Wulder, Michael A; Kangas, Annika; Tuominen, Sakari; Kankare, Ville; Holopainen, Markus; Hyyppä, Juha; Vastaranta, Mikko (Finnish Society of Forest Science, 2018)There is growing interest in the use of Landsat data to enable forest monitoring over large areas. Free and open data access combined with high performance computing have enabled new approaches to Landsat data analysis ...Tieteelliset aikakauslehtiartikkelit