Pour rendre les diagrammes ombrothermiques comparables entre eux: .. Nous avons utilisé la méthode et les conventions de H. Gaussen et F. Bagnouls. Bagnouls &. Gaussen (,). Climograph of 10 meteorological stations Diagramme ombrothermique. Oujda. Tanger. Kenitra. Safi. Laayoune. Dakhla. Diagramme ombrothermique de Bagnouls et Gaussen Quotient pluviothermique d’Emberger Echantillonnage et choix des stations. Etude Du.
|Published (Last):||11 October 2012|
|PDF File Size:||16.40 Mb|
|ePub File Size:||12.1 Mb|
|Price:||Free* [*Free Regsitration Required]|
CCA draw showing distribution of the recognized 90 plots in relation to their vegetation groups and soil variables is illustrated in Df 7. Figure 5 Effect of the age of plantation on abundance. Th Cyperus laevigatus L.
An arch effect occurred along the first non-canonical axis. Th Caryophyllaceae Silene rubella L. The study area The Nile Delta is a classic delta with a triangular shape situated in North Egypt where the Nile River spreads out and drains into the Mediterranean Sea. The emerging landscape classifications are based on the use of GIS and statistics in order to map landscapes, evaluate their character and apply the framework for decision making and planning.
The bagmouls was used to identify these landscape units that should be targeted with conservation measures.
Looking at phenological stages rather than species presence and absence only, a continuous course of turnover with an increase at the end of the vegetation period could be observed. Occurrences of early species Isoetes histrix, Scirpus pseudosetaceus, Juncus hybridus, Juncus capitatus and Radiola linoides were used to select suitable sites for the study.
CGiza, Egypt 2.
ombrotyermique Th Neuradaceae Neurada procumbens L. The first group flowered in a period with good water supply and finished this phase with the beginning of the first desiccation at the beginning of May. Figure 1 Map of Study sites. These results reveal an association between vegetation and the measured soil variables presented in the biplot.
Additionally, soil moisture was measured with a portable sensor in cm soil depth at each vegetation survey 8 x 12 measurements. Tree Ph Alhagi graecorum Boiss. Landscape Typologies have so far mainly relied on the physical and less on the cultural attributes of the landscape.
Within the present study the site-differentiated examination of the flowering phases of Radiola linoides and Solenopsis laurentia revealed a considerable time lag of 10 days between the sites according to the soil moisture gradient. The most species-rich families are Gramineae 33 speciesCompositae 15Leguminosae 12Cruciferae 10Chenopodiaceae 8Convolvulaceae 5Cyperaceae 5Euphorbiaceae 5 and comprise about This operation can be carried out manually or automatically.
Th Molluginaceae Glinus lotoides L. We used variation partitioning to relate the vegetation dynamic to the four variables time, site, TS, and RES, and to reveal shared portions of variation. The correlations between the measured soil variables Table 2 indicated that calcium, magnesium, Faussen 3 and potassium cations had the highest ombdothermique of correlations.
ecologia mediterranea – PDF
The review demonstrates that landscape mapping and assessment is still limited in the Mediterranean. Herb Gaussrn Echinochloa crusgalli L.
The methodology employed climate, landform, geology and Land Cover to Table 3 Datasets used for Landscape Character Mapping in Cyprus and their limitations. Th Eleusine indica L. Herb H Compositae Silybum marianum L.
Th Bidens pilosa L. An important part of it reached a high level of erosion and degradation. One site was close to the valley bottom, one site was on the lower slope and one site on the upper slope. In Algeria 11 orders of 3 classes are presents in the diet of Myotis Punicus, Our study showed that Myotis punicus diet in the study area consisted predominantly of dipterans with a frequency approaching a half of consumed taxa Geomorphology No consistent Mediterranean or European geomorphological map exist.
File:SWA – Wikimedia Commons
This difference is due to the non-linear course of the soil water residuals. Landscape Character Assessment provides an important strategic overview within which to develop policies for a multifunctional landscape in which the conflicting demands of agriculture, development, recreation and nature conservation need to be resolved.
The Mediterranean Landscape Charter known as the Sevilla Charter, was the first document to cover specific issues about the management and protection of Mediterranean landscapes and to stress the need for protection of their natural and cultural heritage. Th Primulaceae Anagallis arvensis L. In that gauxsen only the physiography of the landscape was employed to ascribe the islands landscapes into five sensitivity categories MEPA Th Ranunculus marginatus Urv. Herb H Vicia faba L.