Stand Structure, Aboveground Biomass and Production
43
stand age and structure (measured as either basal area or biomass) of holm
oak forests.
Compared to these forests, the rest of the reported Italian and French
holm oak forests show values in the range of those measured in Catalonia
(NE Spain), where the arboreal aboveground biomass in 671 holm oak plots
randomly located across the country varied between 15 and 284 Mg ha- 1
(Information System of Catalonian Forests, SIBosC, unpubl. data). The Torrent de la Mina holm oak forest is quite representative of its geographical
area (Valles Oriental; Table 3.5), but the Prades stands show far higher biomass and basal area than the average for their geographic area (Conca de
Barbera; Table 3.5). The catchments studied in Montseny and Prades have a
substantially greater biomass than the vast majority of the holm oak forests
of Catalonia. This is a consequence of the accumulation of biomass since the
1950s because little wood has been harvested from these protected catchments during the last decades, as opposed to most holm oak forests in Catalonia that are commercially exploited.
References
Abrams MD, Downs JA (1990) Successional replacement of old-growth white oak by mixed
mesophytic hardwoods in southwestern Pennsylvania. Can J For Res 20:1864-1870
Albeza E, Sabate S, Escarre A, Gracia CA (1995) A long-term thinning experiment on a Quercus
ilex L. forest: changes in leaf characteristics and dynamics in response to different treatment
intensities. In: Jenkins A, Ferrier RC, Kirby C (eds) Ecosystem manipulation experiments:
scientific approaches, experimental design and relevant results. Ecosystems Research Report
20, European Commission, Luxembourg, pp 200-208
Barbero M (1988) Caracterisation de quelques structures et architectures forestieres des arbres
et arbustes a feuilles persistantes de l'etage mediterraneen. Rev For Fr 40:371-380
Barbero M, Loisel R, Quezel P (1992) Biogeography, ecology and history of Mediterranean Quercus ilex ecosystems. Vegetatio 99/100:19-34
Bellot J, Sanchez JR, Lled6 MJ, Martinez P, Escarre A (1992) Litterfall as a measure of primary
production in Mediterranean holm-oak forest. Vegetatio 99/100: 69-76
Canadell J, Riba M, Andres P (1988) Biomass equations for Quercus ilex L. in the Montseny massif, northeastern Spain. Forestry 61: 137-147
Cartan-Son M, Romane F (1992) Standardized description of some experimental plots in the
Quercus ilex L. ecosystems. Vegetatio 991100:3-12
Cartan-Son M, Floret C, Galan MJ, Grandjanny M, Le Floc'h E, Maistre M, Perret P, Romane F
(l992) Factors affecting radial growth of Quercus ilex in a coppice stand in southern France.
Vegetatio 99/100:61-68
Cole DW, Rapp M (1981) Elemental cycling in forest ecosystems. In: Reichle DE (ed) Dynamic
properties of forest ecosystems. Cambridge University Press, Cambridge, pp 341-409
David F, Poissonet P, Romane F (1979) Analyse de la structure horizontale d'un taillis de
Bouleaux (Betula verrucosa Ehrh.) en Sologne. Acta Oecol Oecol Plant 14:237-247
Di Castri F (l973) Soil animals in latitudinal and topographical gradients of Mediterranean ecosystems. In: Di Castri F, Mooney HA (eds) Mediterranean type ecosystems. Origin and
structure. Springer, Berlin, pp 171-190
Précédent

- 61/376

Suivant