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  • 1
    In: Le Journal de botanique, PERSEE Program, Vol. 1, No. 1 ( 1997), p. 75-90
    Type of Medium: Online Resource
    ISSN: 1280-8202
    Language: French
    Publisher: PERSEE Program
    Publication Date: 1997
    detail.hit.zdb_id: 1441289-5
    SSG: 12
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  • 2
    Online Resource
    Online Resource
    PERSEE Program ; 1978
    In:  La Terre et La Vie. Supplément Vol. 32, No. 1 ( 1978), p. 21-37
    In: La Terre et La Vie. Supplément, PERSEE Program, Vol. 32, No. 1 ( 1978), p. 21-37
    Abstract: The vegetation map (see Appendix) is based on the concept of the vegetation series, within which different stages (mature forest, pre-climax forest, scrub, grassland and reafforested areas) are recognised. The most important native trees are Quercus ilex, Q. pubescens, Fagus sglvatica, Pinus halepensis, P. sglvestris, P. uncinata and Abies alba. The vegetation contains elements of both the Mediterranean and the Central European phyto-geogra-phical regions. The former is more typical of the southern slope and the lower part of the northern slope ; the latter occurs on the upper part of the northern slope (extending over to the summit of the southern slope) and part of the eastern ridge. Each of the vegetation series is restricted to one subgroup of these two broad divisions. The Mont Ventoux contains most of the vegetation series known from the limestone regions of southern France ; and the combination of a Mediterranean vegetation on the southern slopes with a Central European type on the northern slopes make it a typical example of the southern prealpine mountains.
    Type of Medium: Online Resource
    ISSN: 2022-0790
    Language: French
    Publisher: PERSEE Program
    Publication Date: 1978
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  • 3
    Online Resource
    Online Resource
    PERSEE Program ; 1978
    In:  La Terre et La Vie. Supplément Vol. 32, No. 1 ( 1978), p. 39-65
    In: La Terre et La Vie. Supplément, PERSEE Program, Vol. 32, No. 1 ( 1978), p. 39-65
    Abstract: A map depicting the fragility of the environment has been drawn up (see Appendix), which distinguishes two main groups. 1) Areas of natural vegetation with low human influence. These include : a) the mature forests. These are poorly represented (only 5300 ha) due to previous overexploitation ; b) the pre-climax forest stages (mainly coniferous) covering about 1000 ha ; c) “degraded” habitats (scrub and grassland), which are mapped in terms of their value as pasture. Scrub covers about 2800 ha, and grassland about 1200 ha. These natural ecosystems make up about half of the non-cultivated areas. 2) Areas with severe human pressure. This pressure may be due to one of several activities. Extensive reafforestation has been carried out since about 1860 (much of the natural forest having been destroyed by then), so that the new forests now cover the other half of the non-cultivated areas. In addition to native species, the exotics Pinus nigra ssp. austriaca and Cedrus atlantica have been widely planted. The cultivated areas are restricted to the foot of the mountain, although sheep are grazed to much higher altitudes. The type of agriculture is related to the natural vegetation series being exploited, and in most places is tending towards monoculture (mainly of vines, fruit-trees or lavender). Other human pressures include housing, roads, military activities and tourism ; industry is very limited in extent. The Mont Ventoux shows a fairly balanced relationship between man and his environment for several reasons. 1) Forest is by far the dominant vegetation type (covering about 75% of the massif). 2) The areas of non-climax and degraded vegetation are relatively restricted in extent, and have a considerable landscape value and economic importance. 3) The impact of forestry and agriculture is negligible, since these areas harmonise remarkably well with the natural landscape. 4) There has been no excessive development of other human activities, although the increasing number of holiday homes is a potential threat.
    Type of Medium: Online Resource
    ISSN: 2022-0790
    Language: French
    Publisher: PERSEE Program
    Publication Date: 1978
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  • 4
    Online Resource
    Online Resource
    PERSEE Program ; 1978
    In:  La Terre et La Vie. Supplément Vol. 32, No. 1 ( 1978), p. 11-20
    In: La Terre et La Vie. Supplément, PERSEE Program, Vol. 32, No. 1 ( 1978), p. 11-20
    Abstract: The Mont Ventoux rises from the south-western end of the southern Prealps, extending some 24 km from east to west, and 15 km from north to south, rising to a maximum height of 1909 m. It forms a large monocline dipping mainly to the south, which shows faulting but no folding. The main crest runs from east to west, separating the scarp slope (to the north) from the dip slope (to the south), while a minor crest running from north to south divides the southern slope into a large western section and a smaller eastern section. Most of the massif is made up of Cretaceous limestone. Erosion has led to widespread accumulation of debris, especially marked at the summit due to the effects of frost-shattering. The southern slope is arid (most rainwater trickling through rock-fissures to an underground river system), whereas there are more springs on the northern slope.
    Type of Medium: Online Resource
    ISSN: 2022-0790
    Language: French
    Publisher: PERSEE Program
    Publication Date: 1978
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