GIS-based model for crop water requirement assessment using agro-statistical and geo-physical data.

摘要: The paper reports the methodology used for realisation of a GIS based model to estimate value water demand irrigated agricultural areas in Italian southern regions. Aim this study is develop system supporting infrastructural works raising improvement resources efficiency. evaluation method requires different databases and their harmonization: land use, soil, climate, statistical data crop coefficient calculate evapotranspiration. use map on photo-interpretation, using ortophotos satellite images, testing field campaigns. classification modified CORINE Land Cover nomenclature order have more details about areas. Climatic database organized basis spazialization 375 climatic stations data, aggregated by monthly average minimum maximum temperature, cumulative rainfall values. result station creation 11 homogeneous zones Southern Regions. GIS-data been intersected with Kc calculating during culture growing periods. Agricultural define crops percentage present province south Italy relation map. coefficients evapotranspiration derived from measurement period, where available, scientific literature. validated calculation able quantify areas, assessing economical environmental sustainability irrigation providing useful tool support management activity.