Guzel, Deniz UgurDogan, AdnanUyak, Cuneyt2025-05-102025-05-1020242948-26232948-263110.1007/s10341-024-01143-32-s2.0-85197483087https://doi.org/10.1007/s10341-024-01143-3https://hdl.handle.net/20.500.14720/10860This study aims to develop a spatial decision support system (SDSS) by evaluating climate, soil, and topography factors together with the help of a Geographical Information System (GIS) and by using this modelled SDSS to determine the potentially suitable areas where grape varieties with different ripening levels within the study area (& Ccedil;atak, Turkey) can be grown. The study was carried out in the & Ccedil;atak district, located in the south of Lake Van, between 4080000 and 4240000 north latitudes and 300000 and 370000 east longitudes (UTM WGS84) in eastern Turkey in 2021-2022. In the study, some important individual factors for vine growing such as the effect of heat summation (EHS), number of frost-free days, minimum winter temperature, aspect, slope, soil depth, and land use capability were evaluated using the GIS and weighted notation ratio result method, and based on this, a suitability analysis was carried out. It was determined that the distributions of the study area for first, second, and third suitability levels, respectively, were 0.72-26.05-52.50% for the earliest variety, 4.58-33.84-48.28% for the early variety, 1.15-22.56-58.47% for the mid-early varieties, 3.95-20.52-49.07% for the mid-season varieties, and 1.18-13.20-44.61% for the late variety. It was seen that the variables and the modelling used were effective in determining suitable areas for grape cultivation.eninfo:eu-repo/semantics/closedAccessClimateSuitability MapEffect Of Heat Summation (Ehs)TopographyGrape VarietiesArticle664N/AN/A16831695WOS:001263070300002