Variability in Tree-ring Width and NDVI Responses to Climate at a Landscape Level

Abstract Inter-annual climatically driven growth variability of above-ground biomass compartments (for example, tree stems and foliage) controls the intensity carbon sequestration into forest ecosystems. However, understanding differences between climatic response stem foliage at landscape level is limited. In this study, we examined climate-growth leaf their relationship for Pinus sylvestris (PISY) Picea abies (PCAB) in topographically complex landscapes. We used tree-ring width chronologies time series normalized difference vegetation index (NDVI) derived from high-resolution Landsat scenes as proxies biomass, respectively. then compared relationships both topographical categories. Our results show that responses rings to climate differ significantly those found NDVI, with stronger signal observed rings. Topography had distinct but species-specific effects: At moisture-limited PISY stands, (tree rings) was strongly driven, relatively insensitive topographic variability. landscapes close optimum PCAB, weak, correlations were often inverse, no significant effects topography. Different signals NDVI suggest canopy change might be decoupled. Furthermore, our hint toward different prioritizations allocation trees under stressful conditions which allometric individual long term.