A set of indices is derived and organized into five main families for a focal class (here ‘forest land cover’ as an example):
- The index family General on general landscape composition is based on a land cover map simplified according to four classes of interest,
- The index family MORPH provides the forest shares into each of four different morphological shapes (interior, edges, linear features, and isolated islets), and is based on the MORPH pattern map,
- The index family MOSAIC provides the forest shares into four fragmentation pattern types (two un-fragmented ‘natural’ patterns, fragmented ‘mixed natural’ and fragmented ‘some natural’), and is based on the MOSAIC pattern map which describes the landscape mosaic surrounding each hectare of forest, based on proportions of artificial, agricultural and natural lands.
- The index family Interface discriminates different types of forest interface zones (forest edges with adjacent natural/semi-natural lands, edges with more anthropogenic lands) , and is derived from the forest interface map,
- The fifth index family Connectivity proposes, for a given dispersal ability in a landscape or region, the forest connectivity index, which is based on intra-patch and inter-patch connectivity, and another index which is a proxy of landscape permeability in-between forest patches.
The model platform has been customized for two main applications, one to measure forest pattern and another one to measure pattern of protected areas. The number of indices in each family can be reduced depending on users focus and semantics. The approach is based on three publically available landscape models
(Morphological Spatial Pattern Application of the free software GUIDOS
, Landscape Mosaic Pattern,Conectivity Conefor Sensinode
open source software ) that are partly combined.
Estreguil, C., et al., (2014) A proposal for an integrated modelling framework to characterise habitat pattern, Environmental Modelling & Software (2013), http://dx.doi.org/10.1016/j.envsoft.2013.10.011
Estreguil, C., Caudullo, G., de Rigo, D., Whitmore C., San-Miguel-Ayanz J., 2012. Reporting on European forest fragmentation: Standardised indices and web map services. IEEE-Earthzine. On line Earthzine's Forest Resource Information theme in second quarter 2012. http://www.earthzine.org/themes-page/forest-resource-information/
Estreguil, C., Caudullo, G., de Rigo,D., 2014. Connectivity of Natura 2000 forest sites in Europe. F1000Posters 2014, 5: 485. DOI: http://dx.doi.org/10.6084/m9.figshare.1063300. ArXiv: 1406.1501