Identifying and mapping land cover/land use (LC/LU) and its change is one of the most important topics in remote sensing since this is the source of a wide range of environmental information about landscape changes, which is essential for an effective sustainable land planning and management. In this framework, a case study has been conducted in the area of Avellino (Southern Italy) by means of remote sensing techniques in combination with GIS and landscape metrics. A multi-temporal set of remote-sensed data has been used: aerial photos (surveys: 1954, 1974, 1980, 1990), Landsat images (MSS 1975, TM 1993, ETM+ 2000 and 2004) and digital aerial orthophotos (1994, 2000 and 2006). In order to highlight the temporal dynamics of changes, the study has integrated temporal trend analysis and landscape metrics and focussed on the urban-rural gradient. First, aerial photos have been interpreted and satellite images have been classified: the result has been a map of LC/LU changes during the last fifty years. This has allowed the characterization of landscape patterns through significant indices, in order to understand the changes therein, especially along the urban-rural fringes. This study has shown that LC/LU pattern and its change are linked to both natural and social processes whose driving role has been clearly demonstrated in the case study: after the disastrous Irpinia earthquake (1980), the local specific zoning laws and urban plans have significantly addressed landscape changes.
Remote sensing and GIS for rural/urban gradient detection
MODICA, Giuseppe
;
2010-01-01
Abstract
Identifying and mapping land cover/land use (LC/LU) and its change is one of the most important topics in remote sensing since this is the source of a wide range of environmental information about landscape changes, which is essential for an effective sustainable land planning and management. In this framework, a case study has been conducted in the area of Avellino (Southern Italy) by means of remote sensing techniques in combination with GIS and landscape metrics. A multi-temporal set of remote-sensed data has been used: aerial photos (surveys: 1954, 1974, 1980, 1990), Landsat images (MSS 1975, TM 1993, ETM+ 2000 and 2004) and digital aerial orthophotos (1994, 2000 and 2006). In order to highlight the temporal dynamics of changes, the study has integrated temporal trend analysis and landscape metrics and focussed on the urban-rural gradient. First, aerial photos have been interpreted and satellite images have been classified: the result has been a map of LC/LU changes during the last fifty years. This has allowed the characterization of landscape patterns through significant indices, in order to understand the changes therein, especially along the urban-rural fringes. This study has shown that LC/LU pattern and its change are linked to both natural and social processes whose driving role has been clearly demonstrated in the case study: after the disastrous Irpinia earthquake (1980), the local specific zoning laws and urban plans have significantly addressed landscape changes.Pubblicazioni consigliate
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