Land use and landscape pattern changes driven by land reclamation in a coastal area: the case of Volturno delta plain, Campania Region, southern Italy

Abstract

The paper provides documentary evidence of the direct impacts on the coastal setting in the northern Campania (southern Italy) region, crossed by the Volturno River, that have led to dramatic alterations of alluvial channels, floodplain and the deltaic environment, aside from the coastline retreat following four centuries of land reclamation. The Volturno delta plain is characterized by an outer delta formed mainly by beach ridges, and an inner plain containing several depressions of drained marsh regions. Until the beginning of the last century, this area was the site of swamps and ponds bearing a high incidence of malaria. Historical analysis coupled with a cartographic restitution in a geographic information system environment has produced documentary evidence of the geomorphological evolution of the coastal sector and has allowed the reconstruction of relevant landscape and hydrographic changes since the end of the seventeenth century, when—during the Spanish vice-kingdom—it was subjected to major land reclamation. The availability of reclaimed lands along the coastal alluvial plain promoted the development of agriculture and farming, as well as a strong coastal urbanization. As a consequence, a landscape fragmentation increased significantly between the 1960s and the 1990s; built-up land area increased as well, overgrowing to the sea. An overall reduction in high-quality ecosystems (humid coastal setting, lacustrine/marshy back-dune area and beach-dune system) is recorded, resulting in biodiversity loss and a dramatic reduction in environmental quality. The outcomes of this research will be beneficial to society for better decision-making over these coastal area applications, in a sustainable manner, especially in these countries that are still experiencing land reclamation.