J. Ruiz del Castillo et al. / Invest Agrar: Sist Recur For (2006) Fuera de serie, 24-39
High mountain type
Zonal vegetation peninsular
Forest/below forest range
Figure 2. Outline of the zonal climatic-structural types of peninsular Spain and the Balearic Islands.
Zonal vegetation is essentially conditioned by clima- te. It belongs to several CTS: the Iberian peninsula and the Balearic Islands are made up of 6 zonal types (Fig. 2) and there are 5 zonal types in the Canary Islands (Fig. 4). An approach to their geographic distribution is shown in Figure 3. Their major traits are described below.
High Mountain Type or Above Timberline Belt (A). Arboreous vegetation has an evident latitudinal and altitudinal limit, as a response to a complex interaction of natural causes which can be defined following diffe- rent approaches (Veijoa, 1998). The timberline, located in the highest mountain ranges, marks the beginning
Peninsular and the Balearic Islands High mountain Taiga-like Deciduous Subsclerophyll Sclerophyll Hyperxerophile Intrazonal
Canary Islands High mountain Alize tradewinds forests Extra alize tradewind forests Below the potential forest belt ss. str. Hiperxerophile Intrazonal
Figure 3. Distribution of the climatic-structural types according to data from MFE 1:1,000,000. Blank areas refer to agricultural lands.