Morphological characteristics of relief as factors of NDVI variation in grass communities of Donbass

The study analyzed the impact of topographic metrics (TPI, TRI, VRM, slope, aspect) on the productivity of grass communities in Donbass, measured using NDVI. Although all metrics showed statistical significance, their contribution to explaining NDVI variation was low (maximum 3.17 % for TPI). The results confirm the need for multi-factor models to more accurately assess productivity, considering the complex interactions between topographic and other ecological factors.