Abstract

We investigate temporal variations in land use and landsliding in a small catchmentcharacterized by the predominance of clay-rich materials and known to be prone to shallowslope failures. The results demonstrate a pronounced change from land use dominated bygrassland pasture (~53 % in 1955) to wheat-based agriculture (~74 % in 2011). Thetemporal series of landslide inventories also indicate significant variations in landslideactivity in the same period. In particular, the highest susceptibility to landsliding has beenregistered in recent years on the sown fields which had initially (1955) been used forpasture and grazing. The data also reveal that with time the steeper and apparently morelandslide-prone slopes with grassland-pasture have been given over to new wheat cultiva-tion. The introduction of ploughing for the new wheat cultivation on the often steep slopesthat had originally been covered by grass is considered to be a significant factor in theincreased susceptibility to landsliding. The negative impact on slope stability can be relatedto the decrease in effective strengths of soil resulting from modification of the existingcover from grass that is present all year to wheat characterized by a few month growthperiod per year, which implies increase in groundwater levels, and mechanical disturbanceof soil caused by tillage. Finally, for the studied period (1955-2011) the local precipitationdata indicated high inter-annual variability without the presence of any statistically signifi-cant trends.

Autore Pugliese

• Wasowski Janusz

Tutti gli autori

• Wasowski J.; Dipalma Lagreca M.; Lamanna C.

Titolo volume/Rivista

Non Disponibile

Anno di pubblicazione

2014

ISSN

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ISBN

978-3-319-04998-4

Numero di citazioni Wos

Nessuna citazione

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Settori ERC

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Codici ASJC

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