Remotely sensed and ground measurament to describe needle unfolding and senescence and litter flammability in Aleppo pine at the intraspecific level

We collected drone images using multispectral and RGB sensors for 56 adult populations of P. halepensis categorized into five ecotypes growing in two common gardens located in Spain under contrasting conditions (Zuera: dry-continental versus Altura: wet-coastal). In Zuera trial, we additionally monitored the temporal variation of RGB-derived indexes using two flights spaced over a one-month period (dataset VIs). We also performed four consecutive ground measurements of needle pigments and fuel moisture content (dataset insitu) and obtained litter flammability traits (dataset Litter_flammability) for a subset of populations.