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Leaf area index (LAI) is a key variable for the understanding of several eco-physiological processes within a vegetation canopy. The LAI could thus provide vital information for the management of the environment and agricultural practices when estimated continuously over time and space thanks to remote sensing sensors. This study proposed a method to(More)
Until now, satellite data are only of limited use to Mid-European forest management. A major limitation is the low spatial resolution of the commonly available satellite sensors. In this paper, we present a specific data fusion approach (local correlation modelling) which can be used to produce multispectral images with high spatial resolution based on(More)
Many bio-geochemical processes in terrestrial ecosystems are related to foliar biochemicals in leaves and needles, specifically to leaf pigmentation and leaf nitrogen concentrations (Melillo et al. Developing methods to quantify pigment content by remote sensing could advance the understanding of photosynthetic processes and allow detection and monitoring(More)
Due to high variation in forest communities, forest structure and the fragmentation of the forested area in Central Europe, satellite-based forest inventory methods have to meet particularly high-quality requirements. This study presents an innovative method to combine official forest inventory information at stand level with multidate satellite imagery(More)
Optical forces have been utilized in wide-ranging applications, from optical tweezing to laser cooling, for nearly forty years. Utilizing a double-microdisk nano-optomechanical system, we demonstrate coherent mechanical oscillation, highly efficient self-cooling, broadband wavelength routing, fast optical switching, and sensitive phonon detection in a(More)
Desertification is the degradation of land in arid, semi-arid, and dry sub-humid areas. It is caused primarily by human activities and climatic variations. Desertification does not refer to the expansion of existing deserts. It occurs because dryland ecosystems, which cover over one third of the world's land area, are extremely vulnerable to(More)
The angular dependence of satellite-measured canopy reflectance has been shown to contain information on the structure of vegetated surfaces. The aim of the research was to explore the angular variability of spectral indices and to compare the suitability of angular indices and traditional vegetation indices for retrieval of forest structural attributes(More)
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