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1 Polish Journal of Ecology

1 2010

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Changes in land use in an historical area of Central Italy over twenty years : the use of environmental indicators

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Bodesmo M. , Romano B. , Pacicco L. , Cagiotti M. , Ranfa A.

Polish Journal of Ecology

2010

tom Vol. 58, nr 3

429-438

The analysis of the area of the municipality of Tuoro sul Trasimeno in Umbria, Central Italy (the historical site of the Battle of Trasimeno in 217 BC) was carried out to evaluate changes in land use from 1977 to 2000 at the land-plot level using relevant land use maps. An evaluation of the environmental quality of land use in 2000 was also made. The study involved an analysis of the environmental diversity in terms of extent and variety of land use. The Landscape Conservation Index (ILC), and diversity indicators (Shannon-Wiener Index and Eveness Index) were calculated. The study showed how landscape quality gradually declined due to an increase in agricultural areas to the detriment of natural areas. The calculation of environmental indicators, particularly the Eveness Index showed how the difference between real and potential diversity increased, in favour of real diversity. This is a symptom of increased human pressure.