This dataset contains field observations and remote-sensing based predictions of plant diversity in the Pallas region in northwest Finland. The production of data is described in the article Mapping plant diversity in a northern boreal landscape with remotely sensed spectral variation (to be published). The dataset consists of: 1) 14 plant diversity metrics (1) species richness, 2) Shannon index, 3) mean species richness at plots, 4) beta diversity ratio, 5) species turnover, 6) a variance-based beta diversity measure, 7) Faith's phylogenetic distance, 8) phylogenetic species variability, 9) phylogenetic Rao's quadratic entropy, 10) functional dispersion, 11) functional richness, 12) functional evenness, 13) functional divergence, and 14) biodiversity relevance) for 355 field sites, each consisting of 5 1×1 m plots, 2) coordinates and classifications of those field sites and the entire study area into peatland, forest, and tundra sites, 3) spectral variation rasters: variation in space (based on WorldView-3 data) and time (based on Sentinel-2 data), both computed as the mean variance in 1) the normalized difference green-red index, 2) the normalized difference red edge index, and 3) the normalized short-wave infrared difference bare-soil moisture index, 4) spectral reflectance and vegetation index values at field sites, based on WorldView-3 and Sentinel-2 data, 5) R (v4.4.2) code for 1) computing plant diversity metrics from field observations, 2) computing spectral variation and sampling remote sensing data, 3) building generalized linear models between spatial and temporal spectral variation and plant diversity in peatlands, forests, tundra, and across the whole landscape, 4) building random forest models of plant diversity based on spectral data in peatlands, forests, tundra, and across the whole landscape, 5) predicting plant diversity in each ecosystem and across the entire landscape using different models, and 6) generating figures included in the research paper, and 6) predicted plant diversity rasters for each plant diversity metric and model.

2025