Characterization of crop vitality and resource use efficiency by means of combining imaging spectroscopy based plant traits

摘要

In this contribution measurements of the Airborne Prism Experiment (APEX) imaging spectrometer were used to derive products related to plant traits, e.g., leaf chlorophyll, carotenoid, anthocyanin, and water content, leaf greenness, biomass, and leaf area index. The Apex products were highly correlated to the related ground truth measurements in major crops under experimental and field situations. The relationship of APEX derived NDVI (NDVI_APEX) with ground measured NDVI and canopy cover is shown in detail. Additionally, interrelations between the aerial detected traits are discussed. The combination of the presented remotely measured plant traits can potentially give crop specific indications of their growth status and vitality. Such tools could help to improve resource use efficiency in agricultural systems and are needed for applications in precision agriculture and mapping of land use and land cover for scientific purposes or decision making.