1、中文 2811 字 本科毕业论文外文翻译 题目 Integrated, sustainable touristic development of the karstic coastline of SW Sardinia 出 处： Journal of Coastal Conservation， 2003:81-90. 作 者： Arisci,A.；DeWaele,J.； Di Gregorio, F.； Ferrucci, I. Follesa, R. 原文 Abstract. In the coastal karstic region of SW Sardinia, many interes
2、ting geological monuments, ecotopes and several places of social and cultural interest that deserve preservation and valorization can be found. This mostly rocky coastline is characterized by the presence of a Cambrian sequence posed of limestones and dolostones and only locally of phyllites. A corr
3、ect use of the many environmental and cultural monuments is necessary both to preserve and to valorize them； therefore they have to be properly managed in order to preserve their original natural conditions. Here, we describe and classify these monuments with the aim to propose an integrated model o
4、f sustainable development of this exceptional coastal landscape. Our model is based on several thematic maps according to which we propose the establishment of a natural reserve with specific geological and geomorphologic sites and the creation of several touristic circuits that are the basis for a
5、further valorization of this territory. Keywords: Coastal Landscape Ecological Zone Sustainable Development 1.Introduction The southwestern coast of Sardinia, stretching from Capo Pecora in the north to Nebida in the south, is one of the scientifically most interesting coastal areas of Sardinia. Unt
6、il only 20 yr ago the most important economic activities in the region were related to mining, which industry has left considerable traces in the landscape.Recently the people living in these old mining villages are trying to treat the industrial remains as archaeological monuments, and make them a
7、tourist attraction,together with the many geological, ecological and cultural monuments. In the present paper we describe the most important of these monuments, emphasizing their use in the framework of an integrated model of cultural touristic development. Geological outline The coastal karstic reg
8、ion of SW Sardinia forms part of the Cambrian Iglesiente massif, which has been intensively exploited for lead and zinc in the past. The Palaeozoic rocks in the area have been described by Pillola (1989) and Bechstadt & Boni (1996). From a stratigraphic point of view the Cambrian succession in SW Sa
9、rdinia is divided in three major groups: Nebida,Gonnesa and Iglesias。 The Nebida Group (Lower Cambrian) is composed of a delta and coastal sediments and is divided into two formations: the Matoppa(sandstones and shales) and Punta Manna (oolithic limestones and calcareous sandstones followed by sands
10、tones with carbonatic fossiliferous lenses and strata). The Gonnesa Group (Lower-Middle Cambrian) is characterized by typically carbonatic deep-sea sediments and is divided into two formations according to its trilobite contents: the Santa Barbara Formation (mainly dolomitized rocks) and the San Gio
11、vanni Formation (intensely karstified limestones). In these carbonatic rocks we find most of the Mississippi Valley type ore deposits and their oxidized equivalents with economically important concentrations of lead and zinc minerals, which have been mined.The Iglesias Group (Middle Cambrian-Lower O
12、rdovician) is divided into two formations: the Campo Pisano Formation, composed of nodular limestones, followed by a thick succession of shales of the Cabitza Formation.After a long period of continentality and an important tectonic phase (Fase Sarda) the sea returned to occupy this area with the de
13、position of the Ordovician conglomerates (Puddinga), followed by Silurian and Devonian sediments. After the Hercynian orogenesis a long continental period started in the region (Carboni-ferous-Middle Trias), only shortly interrupted by new transgressions in Middle-Triassic and in PaleoceneEocene tim
14、es. The prevailing structures in the coastal area of CapoPecora-Nebida are folds directed N-S that involve both Ordovician and Cambrian rocks and the great anticline of Canalgrande-Punta Sa Gloria with an E-W direction(Civita et al. 1983). Geological and other monuments presents the most interesting
15、 geological,environmental, industrial-archaeological and cultural monuments and sites (Arisci et al. 2001a)To the north of the studied area lies Capo Pecora,composed of late Hercynian and thoroughly fractured tonalitic granodiorites with a wide variety of colours ranging from pink to grey. These gra
16、nitic rocks form a promontory, extending to the west and eroded by wind and sea. In spring this area is characterized by the spectacular blooming of the Mediterranean lily Pancratium maritimum. Because of the peculiar lithologies and morphologies and the botanical interest this site has been classif
17、ied as a geological and natural monument(Barca & Di Gregorio 1999).To the south along the coast the touristic village of Portixeddu is situated； it is built upon the upper part of the Portixeddu Formation (Upper Ordovician), consisting mainly of richly fossiliferous dark-grey siltstones and shales o
18、f ca. 50 m thick (Leone et al. 1991). This locality has been known since 1880 for its fossils(brachiopods, bryozoans, cystoids, crinoids, gasteropods, bivalves, trilobites, cornulites, conularids and corals). However, because of the incompleteness of the series and its structural complexity Portixed
19、du was not chosen as the type locality of the formation (Bechstadt& Boni 1996). The dune system of Portixeddu extends over an area of ca. 4 km south of the village and is composed of at least three generations of eolian deposits dating from the Middle Pleistocene to the Holocene (Cesaraccio et al.19
20、86； Arisci et al. 1999). From a morphological point of view longitudinal, parabolic and transversal dunes can be distinguished. Since more than 40 yr this dune field has been stabilized through the plantation of many trees and shrubs. This makes this area very interesting； it has been classified as
21、an ecotope of vegetational interest.The dunes are very rich in endemic plant species and one of the few places of Sardinia in which Pinus pinea and Quercus coccifera grow naturally (Mossa 1990). The coast between Portixeddu and San Nicol is characterized by an almost 3 km long beach fed by the Portixeddu dune field (App. 1). This is the most important beach of this area, and a major attraction for tourists during the summer season. The
