This paper analyses the use of Renyi's generalized entropy function to identify landscape temporal transformation. In order to demonstrate its application we analyze recent historic landscape diversity changes focusing on the evolution of boundaries between patches in the town of Isernia (central Italy). Firstly, three 1:25,000 land cover/vegetation raster maps (1954, 1981 and 1992) were selected. Next, changes in landscape diversity were measured analyzing the variation in the extension of boundary types between adjacent land cover categories (patches) from 1954 to 1992. To do this, Renyi's diversity curves for each year were built and compared. The major advantage in applying the Renyi generalized parametric diversity function to analyze landscape changes in time is that diversity profiles do not display a single index. In fact, a family of indexes is shown, many of which are currently applied and widely used in landscape ecology.
CARRANZA M., L., Acosta, A.T.R., Ricotta, C. (2007). Analyzing landscape diversity in time: the use of Rènyi’s generalized entropy function. ECOLOGICAL INDICATORS, 7(3), 505-510 [10.1016/j.ecolind.2006.05.005].
Analyzing landscape diversity in time: the use of Rènyi’s generalized entropy function
ACOSTA, ALICIA TERESA ROSARIO;
2007-01-01
Abstract
This paper analyses the use of Renyi's generalized entropy function to identify landscape temporal transformation. In order to demonstrate its application we analyze recent historic landscape diversity changes focusing on the evolution of boundaries between patches in the town of Isernia (central Italy). Firstly, three 1:25,000 land cover/vegetation raster maps (1954, 1981 and 1992) were selected. Next, changes in landscape diversity were measured analyzing the variation in the extension of boundary types between adjacent land cover categories (patches) from 1954 to 1992. To do this, Renyi's diversity curves for each year were built and compared. The major advantage in applying the Renyi generalized parametric diversity function to analyze landscape changes in time is that diversity profiles do not display a single index. In fact, a family of indexes is shown, many of which are currently applied and widely used in landscape ecology.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
