作者： Rossella Speranza Filigheddu , Emmanuele Farris , Edoardo Biondi
DOI:
关键词: Schist 、 Arbutus unedo 、 Edaphic 、 Quercus suber 、 Alluvial plain 、 Vegetation 、 Ecology 、 Forestry 、 Geology 、 Calcicole 、 Biodiversity
摘要: The description of vegetation typologies that characterise the plant landscape in Nurra - according to phytosociological and sinphytosociological interpretations is presented. Plant associations found out are here presented from areas closer to sea towards inner ones, grouped according environmental structural characteristics. following new described. Crithmo maritimi-Limonietum nymphaei, Evaco pygmaeae-Bellietum bellidioidis, Senecioni leucanthemifolii-Nanantheetum perpusillae, Spergulario salinae-Hordeetum marini, Limonietum laeti-glomerati, Brassico insularis-Seselictum praecocis, Anthyllido vulnerariae-Kundmannietum siculae, Loto cytisoidis-Dactyletum hispanicae, Dactylo hispanicae-Camphorosmetum monspeliacae, Scillo obtusifoliae-Bellidetum sylvestris, autumnalis-Bellidetum Hypecoo procumbentis-Silenetum nummicae, Bupleuro fontanesii-Scorpiuretum muricati, Rosmarino officinalis-Thymelaeetum tartonrairae, Dorycnio pentaphylli-Cistetum eriocephali, Pyro amygdaliformis-Quercetum ilicis, Euphorbio characiae-Juniperetum turbinatae, Pistacio lentisci-Calicotometum villosae, Crataego monogynae-Pistacietum lentisci. Furthermore, syntaxonomical study subnitrophilous hemicryptophyte communities allowed their attribution Artemisietea vulgaris c1ass. Within this class Brachypodio ramosi-Dactyletalia hispanicae order described, together with two alliances, Reichardio maritimae-Dactylion Leontodo tuberosi-Bellidion sylvestris . includes perennial, geophyte, secondary formations, finding optimum sub-humid humid mesomediterranean macroclimate, can also penetrate into thermomediterranean one for edaphic compensation. Moreover, suggests include order, Bromo-Oryzopsion Thero-Brachypodion ramosi alliances. The dynamic relationships reconstruct series which integration produces main units present Nurra. coastal Tyrrhenian, basophilous, calcicole, edaphon-xerophilous Juniperus turbinata (Chamaeropo humilis-Junipereto turbinatae sigmetum) was reconstructed on Mesozoic limestone. Different comophytic chasmophytic integrating coastallimestone connected pattern by chain relationships. Between limestone sector Paleozoic metamorphic one, neutroacidophilous, sandstone, Arbutus unedo arbutetosum unedonis sigmetum), representing an variant previous linked violet quartzose sandstone a more clayey soil generated, reconstructed. geosigmetum completed c1imatophilous Quercus ilex (Pistacio-Querceto i1icis sigmetum). It hills and, its series-head, only few examples grove remain, assume particular characterisation presence Chamaerops humilis. Sardinian coastal, schist, thermomediterranean, climatophilous Juniperetus (Euphorbio characiae-Junipereto area. prevalently contact subhalophile garigue microgeosigmeta therophytic chamaephytic halophile occurs girdle close c1iff. unit section mesomediterranean, (Erico arboreae-Querceto ilicis In alluvial plain Nurra, strong substrata mixed calcicole-silicic matrix, always climate but under marked compensation, Sardinian, plain, edaphon-mesophilous suber (Pyro amygdaliformis-Querceto found. edaphon-hydric soils north-western Sardinia ( Allio triquetri-Ulmeto minoris Finally, some indications about land management given maintain high biodiversity currently still present.