Examens De Fin Module Électromécanique des Systèmes Automatisées-ESA-OFPPT-PDF

Examens De Fin Module Électromécanique des Systèmes Automatisées


Examens De Fin Module Électromécanique des Systèmes Automatisées-ESA-OFPPT-PDF

Examens De Fin Module



Eucalyptus cladocalyx. F. v. Muell.

Botanical Portrayal: tree 30 to 45 m high and 1.50 m in diameter.

Bark: deciduous, slightly yellowish in color, persistent at the base of the trunk.

Leaves: opposite standard 3 or 4 pairs, then alternate, elliptical orbicular, petiolate 6x6.5 cm.

Adults: alternate 8-14x1.5-3 cm, lanceolate to broad lanceolate, slightly more clear on the underside. Nervation from 40 ° -50 °.

Inflorescences: in axillary umbels or in terminal panicles. Umbels comprising from 4 to 16 flowers, borne on a 10-15 mm peduncle. Elongated buttons of 10x4-6 mm. Apiculate hemispherical cover.

Natural products: short pedicels of 10-15x5-10 mm, ovoid, cylindrical urceolate, slightly ribbed longitudinally. Narrow, depressed disc with 3 recessed valves.

Origin: South Australia.

Bioclimates: superior semi-arid, subhumid, warm to temperate variants.

Rainfall: 350-600 mm.

Temperature: m.a: - 2 ° to - 4 ° C.

Wind: the foliage is reasonable in the cold wind.

Soil: reasonable species with active limestone; chlorosis rapidly in soils which contain a strength extent; dreads hydromorphic soils, and in particular the surface hydromorphy of packed silts in depressions; gives good results on schists and quartzites which have a good retention capacity.

Use: this kind of beauty form, providing quality wood, deserves to be treated in forest. A little more to xerophilic and apparently more resistant to limestone than E. camaldulensis, it can compete with the latter where it is in its place, especially in coastal cork forests, despite its growth a little more, weak vehicle produces lumber. May also, like E. sideroxylon, relay E. ca. Inward, yielding acceptable yields, with a slightly lower rainfall and in soils in addition to dry, standard example in the mixed cedar forests of thuja and tizra in the hinterland of Rabat - Casablanca.

9. Eucalyptus. sargenti maiden

Botanical portrayal: species similar to the eucalyptus astringens and occidentalis. It differs from it by child bearing shrub or dainty tree (8-15 m high), its narrow lanceolate leaves of 6-10x1.5 cm, standard child curved lid, narrowly cylindrical of 12-15x4 mm.

Origin: salt sand from Western Australia.

Bioclimates: from coastal to sub-humid arid, warm and temperate variants.

Soils: species supporting marly and clay soils; recovery more resistant to salt than E.occidentails (12g of CINa standard kg of dry earth).

Use: despite its poor form, this eucalyptus is used in insurance reforestation in semi-arid areas, due to child adjustment to heavy and salty territories.

10. Acacia Cyanophylla. Lindl.

Botanical Portrayal: tree with a very branched habit, with a sinuous short trunk, up to 6-8 m high.

Bark: brownish gray, cracked. Rameux of the light green year.

Leaves: the juvenile leaves are composed and then replaced by phyllodes up to 30 cm in length, 0.6 to 3 cm huge, blueish green in color, slightly sickle-shaped with a well marked main vein.

Inflorescences: flowers grouped in glomeruli forming clusters; glomeruli 1-1.5 cm in diameter, bright yellow in color.

Natural products: flat pods slightly narrowed seeds, slightly arched 7-13 cm long by 0.5 cm enormous; dark greenish-brown seeds.

Origin: Western Australia.

Bioclimates: from the coastal Saharan to the humid stage; hot to cool variant.

Wind: fairly reasonable species with spray.

Soils: species found on practically all types of soils; the best results being obtained on deep sands.

Usage: despite its low longevity (20-25 years) this very plastic species with a bushy habit, which rejects stumps and suckers: is very used in insurance reforestation: it serves to fix both the sand dunes and the banks of ravine, and is one of the basic characters of low-rise sylvo-pastoral perimeters, due to the fodder value of its leaves and pods.