Agricultural Use of Tuscan Landscape: Small Area Estimation and Sub-Regional Mapping
نویسندگان
چکیده
Riassunto: Gli attuali disegni di campionamento utilizzati in ambito agricolo sono stati progettati per avere stime a livello regionale. Per ottenere stime per domini subregionali si rende quindi necessario applicare metodologie specifiche, basate su modelli che utilizzano informazioni ausiliarie relative anche alle aree “vicine”. Tali stimatori indiretti considerano, oltre alla classica variabilità spiegata dalle variabili ausiliarie del modello, anche quella indotta da specifici effetti di area. Seguendo tale approccio, il lavoro descrive l’applicazione, sia a dati simulati che a dati reali (SPA), di uno stimatore EBLUP combinato con un modello a effetti casuali di area spazialmente correlati. I risultati ottenuti permettono la mappatura dell’uso agricolo del territorio regionale con attenzione a domini geografici più fini di quelli attualmente disponibili.
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