26
M. García-Martín et al.
Fig. 2.2 Persistence index for Europe (years needed for the transformation of land cover if it would
occur at the same speed as it occurred in the time period 1900–2010). Source Lieskovský and Bürgi
(2018)
such has become a key area of study. Comparing these levels of intensity provides a
comprehensive picture of how European landscapes have evolved (e.g. croplands may
present very different characteristics depending on the intensity of how agricultural
production is carried out).
There are two main processes of intensity changes: disintensification and intensification (Plieninger et al. 2016) of agriculture and of forestry. van Vliet et al. (2015,
p. 28) reviewed 218 case study research articles on agricultural land use change, and
defined these processes in the following way:
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