FORAGE PRODUCTION OF PERMANENT GRASSLANDS IN ROMANIA ACROSS ALTITUDINAL AND SOIL GRADIENTS
PRODUCȚIA DE FURAJE DIN PAJIȘTI PERMANENTE DIN ROMÂNIA PE GRADIENȚII ALTITUDINALI ȘI AI SOLULUI
DOI : https://doi.org/10.35633/inmateh-78-108
Authors
Abstract
Permanent grasslands represent one of the most important components of Romania’s agricultural and ecological landscape. Their productivity is influenced by climatic gradients, soil properties, and topographic variation. This study evaluates dry matter production across vegetation zones, and investigates the role of altitude, soil group, and soil pH in explaining productivity differences. A total of 83 sampling sites were distributed proportionally across Romanian vegetation zones. Aboveground biomass was harvested using standardized 1 m² quadrat sampling. Soil samples were collected from 0-10 cm and 10-20 cm depths for classification and pH determination. The adjusted model was composed of 68 samples after excluding underrepresented soil categories. Simple regression analysis showed that altitude significantly influences dry matter production (R²=0.091, p=0.009). The ANOVA analysis model which included soil group and soil pH explained 37.3% of total variance (R² = .373, p = .002). While the soil group did not present a statistically significant independent main effect, interaction patterns suggested that the impact of altitude differs among certain soil types. These findings conclude that altitude is a consistent factor in grassland productivity, while soil characteristics impact productivity responses rather than acting independently.
Abstract in Romanian



