Grasslands of the World.pdf - Disasters and Conflicts - UNEP

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Figure 4.5
Biozones of Patagonia , from Paruelo, Jobággy and Sala (1998).
(Reproduced with permission of the authors and the editors of Ecología Austral)
Grasslands of the world
(physiognomic) characteristics of dominant plant life-forms (Cabrera, 1971;
Soriano, 1983; León et al., 1998; Roig, 1998) or phytosociological approaches
as the main grouping criteria (Collantes, Anchorena and Cingolani, 1999;
Golluscio, León and Perelman, 1982; Boelcke, Moore and Roig, 1985).
Recently, Paruelo, Jobbágy and Sala (1998b) classified the vegetation of the
region on the basis of functional characteristics, using productivity -related
indices derived from NOAA satellite imagery analysis (Figure 4.5 and
Table 4.1). An advantage of this approach is that it provides a functional upto-date
classification of vegetation, reflecting the current state of rangelands,