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منقول
تقرير عن desert.doc (34.0 كيلوبايت, 1089 مشاهدات)
أبي تقرير عنDesert Trees
بليييييز هلب مييييييي
For trees that would blend in well with the natural desert up in that are you can’t beat palo verdes and mesquites for shade. Palo Verdes (Blue palo verde, Foothills, Palo Brea or Sonoran palo verde and the thornless hybrids) – Most grow fast to about 30 x 30 except Foothills which is smaller (20 x 20) – Produce light or filtered shade – Gorgeous spring color with golden flowers Mesquites (Velvet, Honey & Chilean hybirds) – Most are large trees 30 x 30, and fast growers – Heavier shade – Produce edible bean pods that can be ground and used in baking, etc. – Some folks are sensitive to the pollen Ironwoods are great trees but grow at a slower rate. They are beginning to bloom now and have tiny pink to lavender colored flowers. Excellent wildlife tree The evergreen elm is very hardy, has a beautiful weeping form, with no thorns, grows fast and has a really pretty trunk. They are best grown with one trunk trimmed up high to account for the weeping form. The colder it is the more leafs they will drop-this winter most trees dropped all leafs, but they leaf out quickly in March.
Chinese Pistache work very well in the valley-there are hundreds of very old, very large one’s around. It’s just about the only tree around here that give us the spectacular fall color we remember from back east-intense dark orange, red color usually right around Thanksgiving. They leaf back out in early April. I wouldn’t call them fast growing, more like medium growing but they are very strong trees and are a great investment to your property.
You should go walk around ASU. They have an example of almost every tree you can grow here at various growing stages. Two trees that I like, but require some H20 are the Southern Live Oak and Carob Tree. Dark barked big trees with large round canopies. The area around the Nobel Library reminds me of the East. There are large Oaks, Elms, and Honey Locs.
Have you considered a Sissoo tree? They have a nice leafy look and though they can use lots of water for fast growth, they can also subsist on less. The color is fresh green but doesn’t look out of place in the desert. Once they’re well established they seem to be more cold-hardy, too. Mine only had a few browned leaves this winter and it was fairly cold.
Leather-leaf acacia (Acacia craspedocarpa) – grows to about 10 feet tall with rounded gray-green leaves. Yellow puff-ball flowers in spring. Low litter.
Hop Bush (Dodonea viscosa) – grows about 10 feet tall with bright green leaves. Has very tiny flowers. Low litter.
Sugar Bush (Rhus ovata) – will reach 10 feet and has dark green leaves. Small cream colored flowers. Low litter.
Arizona Rosewood (Vauquelinia californica) – reaches 10 feet or more wiht narrow dark green leaves. Clusters of white flowers in early summer. Can be mistaken for oleander at a distance.
مصادر و المراجع :
معهد الامارات التعليمي www.uae.ii5ii.com
قوقل
وكبيديا الموسوعة الحرة
http://faq.gardenweb.com/faq/lists/a…108029014.html
المشرفة ^^
A desert is a landscape form or region that receives very little precipitation
Deserts are defined as areas that receive an average annual precipitation of less than 250
mm (10 in). In the Köppen climate classification system, deserts are classed as (BW).
مقدمه
Geography
A satellite image of the Sahara, the world’s largest hot desert and second largest desert after Antarctica.
Deserts take up one-third of the Earth’s land surface.[1] They usually have a large diurnal and seasonal temperature range, with high daytime temperatures (in summer up to 45 °C or 113 °F), and low night-time temperatures (in winter down to 0 °C; 32 °F) due to extremely low humidity. Water acts to trap infrared radiation from $$$$ the sun and the ground, and dry desert air is incapable of blocking sunlight during the day or trapping heat during the night. Thus during daylight most of the sun’s heat reaches the ground. As soon as the sun sets the desert cools quickly by radiating its heat into space. Urban areas in deserts lack large (more than 25 °F/14 °C) daily temperature ranges, partially due to the urban heat island effect.
Many deserts are formed by rain shadows, mountains blocking the path of precipitation to the desert. Deserts are often composed of sand and rocky surfaces. Sand dunes called ergs and stony surfaces called hamada surfaces compose a minority of desert surfaces. Exposures of rocky terrain are typical, and reflect minimal soil development and sparseness of vegetation.
The snow surface at Dome C Station in Antarctica is a representative of the majority of the continent’s surface.
Bottomlands may be salt-covered flats. Eolian processes are major factors in shaping desert landscapes. Cold deserts (also known as polar deserts) have similar features but the main form of precipitation is snow rather than rain. Antarctica is the world’s largest cold desert (composed of about 98 percent thick continental ice sheet and 2 percent barren rock). The largest hot desert is the Sahara.
Deserts sometimes contain valuable mineral deposits that were formed in the arid environment or that were exposed by erosion. Because deserts are so dry, they are ideal places for artifacts and fossils to be preserved.
http://en.wikipedia.org/wiki/Desert
desert world
بحث عن desert \ الصحراء 2 ثانوي بحث عن desert \ الصحراء 2 ثانوي تقارير تقرير بحث بحوث موضوع الموضوع مواضيع الصحراء الانكليزي الامارات انكليزي انجلش انجليزي
المشاركة الأصلية كتبت بواسطة العيناوية 
اختي يا ريت تكتبين طلبج في موضوع منفصل عسب اساعدج ^_^
_______________
فزعتكم يا مخاوين شما
اوكيييييييييييي
[IMG]http://www.blueplanetbiomes.org/images/desert_********_map001.gif[/IMG]
In this report you will learn about Hot and Dry Deserts and Cold Deserts. I hope you enjoy!
A Hot and Dry Desert is, as you can tell from the name, hot and dry. Most Hot and Dry Deserts don’t have very many plants. They do have some low down plants though. The only animals they have that can survive have the ability to burrow under ground. This is because they would not be able to live in the hot sun and heat. They only come out in the night when it is a little cooler.
A cold desert is a desert that has snow in the winter instead of just dropping a few degrees in temperature like they would in a Hot and Dry Desert. It never gets warm enough for plants to grow. Just maybe a few grasses and mosses. The animals in Cold Deserts also have to burrow but in this case to keep warm, not cool. That is why you might find some of the same animals here as you would in the Hot and Dry Deserts.
Deserts cover about one fifth of the Earth’s land surface. Most Hot and Dry Deserts are near the Tropic of Cancer or the Tropic of Capricorn. Cold Deserts are near the Arctic part of the world.
Hot and Dry Deserts temperature ranges from 20 to 25° C. The extreme maximum temperature for Hot Desert ranges from 43.5 to 49° C. Cold Deserts temperature in winter ranges from -2 to 4° C and in the summer 21 to 26° C a year
The precipitation in Hot and Dry Deserts and the precipitation in Cold Deserts is different. Hot and Dry Deserts usually have very little rainfall and/or concentrated rainfall in short periods between long rainless periods. This averages out to under 15 cm a year. Cold Deserts usually have lots of snow. They also have rain around spring. This averages out to 15 – 26 cm a year.
Hot and Dry Deserts are warm throughout the fall and spring seasons and very hot during the summer. the winters usually have very little if any rainfall. Cold Deserts have quite a bit of snow during winter. The summer and the beginning of the spring are barely warm enough for a few lichens, grasses and mosses to grow.
Hot and Dry Deserts vegetation is very rare. Plants are almost all ground-hugging shrubs and short woody trees. All of the leaves are replete (packed with nutrients). Some examples of these kinds of plant are Turpentine Bush, Prickly Pears, and Brittle Bush. For all of these plants to survive they have to have adaptations. Some of the adaptations in this case are the ability to store water for long periods of time and the ability to stand the hot weather.
Cold Desert’s plants are scattered. In areas with little shade,about 10 percent of the ground is covered with plants. In some areas of sagebrush it reaches 85 percent. The height of scrub varies from 15 cm to 122 cm. All plants are either deciduous and more or less contain spiny leaves.
Hot and Dry Deserts animals include small nocturnal (only active at night) carnivores. There are also insects, arachnids, reptiles, and birds. Some examples of these animals are Borrowers, Mourning Wheatears, and Horned Vipers. Cold Deserts have animals like Antelope, Ground Squirrels, Jack Rabbits, and Kangaroo Rats.
مصادر :
معهد الامارات التعليمي
www.uae.ii5ii.com
قوقل
www.google.com
http://www.blueplanetbiomes.org/desert.htm
انصحج بزيارة المواقع التالية :
http://www.blueplanetbiomes.org/desert.htm
http://en.wikipedia.org/wiki/Desert
السموحة بغير عنوان الموضوع ..^_^
كيف حالكم إن شاء الله بخير
بغيت منكم طلب ضروووري أرجوكم ساعدوني
بغيت تقرير عن صحارى ديزرت
أرجوكم ساعدوني هاي أبلتنا متوحشة بغيته بأسرع وقت
والله يعطيكم العافية
والسموحه
A geographical map of Africa, showing the ecological break that defines the Saharan areaThe Sahara covers huge parts of Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Western Sahara, Sudan and Tunisia. It is one of three distinct physiographic provinces of the African massive physiographic division.
To the north, the Sahara reaches to the Mediterranean Sea in Egypt and portions of Libya, but in Cyrenaica and the Magreb, the Sahara borders Mediterranean forest, woodland, and scrub ecoregions of northern Africa, which have a Mediterranean climate characterized by a winter rainy season.
To the south, the Sahara is bounded by the Sahel, a belt of dry tropical savanna with a summer rainy season that extends across Africa from east to west. ]
Speakers of the Nilo-Saharan language family also inhabit the Sahara, including the Fur of Darfur in western Sudan and the Saharan languages of Niger, Chad and western Sudan, which includes the Kanuri, Tedaga, and Dazaga.
The Sahara’s topographical features include shallow basins, large oasis depressions, serirs or regs (gravel-covered plains), plateaus, mountains, sand sheets, dunes and sand seas (ergs). The highest part of the desert is at the summit of Mount Koussi, which is 11,204 feet (3,415 m) high. However, the lowest point of the Sahara is 436 feet (133 m) below sea level: in the Qattera Depression in Egypt.
Some of the mammal species found within the Sahara are the gerbil, jerboa, Cape hare, the desert hedgehog, dorcas gazelle, dama deer, Nubian wild , anubis baboon, spotted hyena, common jackal, sand fox, Libyan striped weasel, and the slender mongoose. The Sahara also contains over 300 species of migratory bird populations along with water and shore birds and various other types of birds. Some of the most common birds are ostriches, raptors, secretary birds, guinea fowl, Nubian bustards, desert eagle and barn owls, sand larks, pale crag martins, and brown-necked and fan-tailed ravens.
جمعيهم واعملي التقرير
اي مساعدة انا موجودة
جزاك الله الف خير ….
شحالكم
الصراحة ما بطول عليكم
ابغي موضوع بسيط منك وانشاء الله ماتردوني والموضوع عن
how can we green the desert
واتمنى الموضوع يكون بسيط
؟؟؟؟؟؟؟؟.doc (81.5 كيلوبايت, 611 مشاهدات)
ومشكوووووووووووووووووووووووورين……..
المصدر تعلم لأجل الإمارات
أبي بحث
أبي بحث انجليزي عن deserts أو healthy lifestyles
please أبي بسرعة
وشكرا
Desert !~.doc (1.12 ميجابايت, 184 مشاهدات)
يارب ساعد عبدك؟؟؟
والله يوفقك اخويــه ! 
المشاركة الأصلية كتبت بواسطة 50sent أبي بحث
أبي بحث انجليزي عن deserts أو healthy lifestyles
please أبي بسرعة
وشكرا
اي تقرير انجليزي ثالث ثنوي عن الدرووس الفي كتاب تكفووون متوهقه انا
يأست قلت خلاص محد بايساعدني
مشكورة أختي:)
