PILOTS OF LONG-TERM CLIMATE IMPACT FOREST MONITORING SITES: LINKING STAND-LEVEL INFORMATION AND REMOTE SENSING
Příjemce: Ústav výzkumu globální změny AV ČR, v. v. i.
Klíčová slova: xxx
Anotace projektu:
We will acquire a comprehensive data set of three selected forest sites, which are exposed to seasonal drought and other environmental stressors. We have selected two forests sites, which have established and controlled drought treatments installed as the experimental basis for extracting and understanding the specific signatures of long- and short-term drought effects on forests health. These two sites are complemented by a third site, which is a class 1 ICOS site, which provides a long-term time series of seasonal environmental stress events. The combination of the three sites allows on the one hand the detailed mechanistic understanding of drought-induced changes on forests traits and remote sensing products and on the other hand the extrapolation of the knowledge to the seasonal dynamics. The data set consists of (i) airborne hyperspectral reflectance, solar-induced fluorescence (SIF), emissivity and land surface temperature (LST), and LiDAR based surface structure maps, (ii) UAV based maps of multispectral canopy reflectance and SIF as well as (iii) selected in-situ data and detailed information on relevant traits on selected trees. While airborne maps have a pixel resolution of 1-2 m, UAV-based data are recorded on the centimeter scale allowing the identification of single canopy elements. The data will be recorded on two time points during the vegetation period 2026 and raw data will be converted into lvl-2 and lvl-3 data products. We will analyze the data set towards its predictability to detect early signs of vegetation stress and impairment of photosynthetic carbon fixation of the forest sites.



