At the level of Hunedoara County, according to the National Institute of Statistics, deciduous forests (approx. 50%), grasslands (approx. 18%) and arable lands (approx. 10%) predominate in the structure of the land fund.. In the case of grasslands, the monitoring of their dynamics is of particular importance, in this process being identified the directions and behavior of grassland areas in relation to other components of the environment. One of the most effective land use monitoring procedures is that involving geospatial data and GIS and remote sensing methods. In the case of this study, the Corine Land Cover databases from 1990 and 2018 were used to highlight the changes in land use in Hunedoara County, in the mentioned time interval, and the main objective referred to the trends in "mobility" of grassland areas. Change analysis was performed by comparing geospatial data in Land Change Modeler, a tool implemented in TerrSet software. From 1990 to 2018, the area of pastures decreased by 13071 ha, and the area of natural grasslands increased by 17845 ha. In the “pasture” class, in addition to the changes produced by the inclusion of “natural grasslands”, 10776 ha were transformed into deciduous forests and 2763 ha were included in the category “agricultural land with natural vegetation”. The pastures gained areas by transforming the use classes of “complex crops” (6960 ha), fruit tree plantations (4990 ha) and as a result of the restriction of the built space (2840 ha). In the case of natural grasslands, the decrease of surface was due to their transition to the category of deciduous forests (1366 ha) and as a result of the expansion of non-agricultural areas (612 ha), and the increase of surface comes from the categories of pastures (14819 ha), complex crops (4323 ha) and shrub vegetation (1418 ha). The changes produced have been "spatialized" by maps of the changes through which different territorial analyzes can be made.

land use, grasslands, Land Change Modeler, change detection

agronomy

Presentation: poster