Flora and fauna (Thực vật và động v

Flora and fauna (Thực vật và động vật)
The flora of the Sahara is highly diversified based on the bio-geographical characteristics of this vast desert. Floristically, the Sahara has three zones based on the amount of rainfall received – the Northern (Mediterranean), Central and Southern Zones. There are two transitional zones – the Mediterranean-Sahara transition and the Sahel transition zone.[25]
The Saharan flora comprises around 2800 species of vascular plants. Approximately a quarter of these are endemic. About half of these species are common to the flora of the Arabian deserts.[26]
The central Sahara is estimated to include five hundred species of plants, which is extremely low considering the huge extent of the area. Plants such as acacia trees, palms, succulents, spiny shrubs, and grasses have adapted to the arid conditions, by growing lower to avoid water loss by strong winds, by storing water in their thick stems to use it in dry periods, by having long roots that travel horizontally to reach the maximum area of water and to find any surface moisture and by having small thick leaves or needles to prevent water loss by evapo-transpiration. Plant leaves may dry out totally and then recover.

Camels in the Guelta d'Archei, in north-eastern Chad.
Several species of fox live in the Sahara, including the fennec fox, pale fox and Rüppell's fox. The addax, a large white antelope, can go nearly a year in the desert without drinking. The dorcas gazelle is a north African gazelle that can also go for a long time without water. Other notable gazelles include the rhim gazelle and dama gazelle.
The Saharan cheetah (northwest African cheetah) lives in Algeria, Togo, Niger, Mali, Benin, and Burkina Faso. There remain fewer than 250 mature cheetahs, which are very cautious, fleeing any human presence. The cheetah avoids the sun from April to October, seeking the shelter of shrubs such as balanites and acacias. They are unusually pale.[27][28] The other cheetah subspecies (northeast African cheetah) lives in Chad, Sudan and the eastern region of Niger. However, it is currently extinct in the wild of Egypt and Libya. They are approximately 2,000 mature individuals left in the wild.

An Idehan Ubari oasis lake, withnative grasses and Date palms.
Other animals include the monitor lizards, hyrax, sand vipers, and small populations of African wild dog,[29] in perhaps only 14 countries[30] and red-necked ostrich. There exist other animals in the Sahara (birds in particular) such as African silverbill and black-faced firefinch, among others. There are also small desert crocodiles in Mauritania and the Ennedi Plateau of Chad.[31]
The deathstalker scorpion can be 10 cm (3.9 in) long. Its venom contains large amounts of agitoxin and scyllatoxin and is very dangerous; however, a sting from this scorpion rarely kills a healthy adult. The Saharan silver ant is unique in that due to the extreme high temperatures of their habitat and the threat of predators, the ants are active outside their nest for only about ten minutes per day.[32]
Dromedary camels and goats are the domesticated animals most commonly found in the Sahara. Because of its qualities of endurance and speed, the dromedary is the favourite animal used by nomads.
human activities are more likely to affect the habitat in areas of permanent water (oases) or where water comes close to the surface. Here, the local pressure on natural resources can be intense. The remaining populations of large mammals have been greatly reduced by hunting for food and recreation. In recent years development projects have started in the deserts of Algeria and Tunisia using irrigated water pumped from underground aquifers. These schemes often lead to soil degradation and salinization.
From Hacettepe University; Researchers (Yücekutlu,N. et al., 2011) have reported that Saharan soil may have bio-available iron and also some essential macro and micro nutrient elements suitable for use as fertilizer for growing wheat.[33]

Kết quả (Anh) 1:

Flora and fauna (plants and animals)The flora of the Sahara is highly diversified based on the bio-geographical characteristics of this vast desert. Floristically, the Sahara has three zones based on the amount of rainfall received-the Northern (Mediterranean), Central and Southern Zones. There are two transitional zones-the Mediterranean-the Sahara and the Sahel transition transition zone. [25]The Saharan flora comprises around 2800 species of vascular plants. Approximately a quarter of these are endemic. About half of these species are common to the flora of the Arabian deserts. [26]The central Sahara is estimated to include five hundred species of plants, which is extremely low considering the huge extent of the area. Plants such as acacia trees, palms, succulents, spiny shrubs, and grasses have adapted to the arid conditions, by growing lower to avoid water loss by strong winds, by storing water in their thick stems to use it in dry periods, by having long roots that travel horizontally to reach the maximum area of water and to find any surface moisture and by having small thick leaves or needles to prevent water loss by evapo-transpiration. Plant leaves may dry out totally and then recover.Guelta d'Archei, the camels in north-eastern Chad.Several species of fox live in the Sahara, including the fennec fox, pale fox and Rüppell's fox. The addax, a large white antelope, can go nearly a year in the desert without drinking. The dorcas gazelle is a north African gazelle that can also go for a long time without water. Other notable gazelles include the rhim gazelle and dama gazelle.The Saharan cheetah (northwest African cheetah) lives in Algeria, Togo, Niger, Mali, Benin, and Burkina Faso. There remain fewer than 250 mature cheetahs, which are very cautious, fleeing any human presence. The cheetah avoids the sun from April to October, seeking the shelter of shrubs such as balanites and acacias. They are unusually pale.[27][28] The other cheetah subspecies (northeast African cheetah) lives in Chad, Sudan and the eastern region of Niger. However, it is currently extinct in the wild of Egypt and Libya. They are approximately 2,000 mature individuals left in the wild.An Idehan Ubari oasis lake, withnative grasses and Date palms.Other animals include the monitor lizards, hyrax, sand vipers, and small populations of African wild dog,[29] in perhaps only 14 countries[30] and red-necked ostrich. There exist other animals in the Sahara (birds in particular) such as African silverbill and black-faced firefinch, among others. There are also small desert crocodiles in Mauritania and the Ennedi Plateau of Chad.[31]The deathstalker scorpion can be 10 cm (3.9 in) long. Its venom contains large amounts of agitoxin and scyllatoxin and is very dangerous; however, a sting from this scorpion rarely kills a healthy adult. The Saharan silver ant is unique in that due to the extreme high temperatures of their habitat and the threat of predators, the ants are active outside their nest for only about ten minutes per day.[32]Dromedary camels and goats are the domesticated animals most commonly found in the Sahara. Because of its qualities of endurance and speed, the dromedary is the favourite animal used by nomads.human activities are more likely to affect the habitat in areas of permanent water (oases) or where water comes close to the surface. Here, the local pressure on natural resources can be intense. The remaining populations of large mammals have been greatly reduced by hunting for food and recreation. In recent years development projects have started in the deserts of Algeria and Tunisia using irrigated water pumped from underground aquifers. These schemes often lead to soil degradation and salinization.From Hacettepe University; Researchers (Yücekutlu,N. et al., 2011) have reported that Saharan soil may have bio-available iron and also some essential macro and micro nutrient elements suitable for use as fertilizer for growing wheat.[33]

Kết quả (Anh) 2:

Flora and fauna (plants and animals)
The flora of the Sahara is highly based on the bio-Diversified geographical VAST đặc of this desert. Floristically, the Sahara has three zones based on the amount of Rainfall received - the Northern (Mediterranean), Central and Southern Zones. There are two transitional zones - the Mediterranean and the Sahel-Sahara transition zone transition. [25]
The Saharan flora comprises around 2800 species of vascular plants. Approximately a quarter of These are endemic. About half of những species are common to the flora of the Arabian Deserts. [26]
The central Sahara is Estimated to include five hundred species of plants, mà extremely low considering the huge extent of the area. Plants như acacia trees, palms, succulents, spiny shrubs, and grasses have adapted to the arid conditionsEND_SPAN, by Growing Lower to avoid water loss by strong winds, by storing water trong to use it to print thick stems dry periods, by having dragon Horizontally mà roots travel to Reach the maximum area of water and to find any surface moisture and by having small leaves or needles to Prevent thick water evapo-transpiration loss by. Plant leaves dry out totally and then sew recover. Camels in the Guelta d'Archean, north-eastern Chad print. Several species of fox live in the Sahara, the Fennec fox gồm, pale fox and Ruppell's fox. The Addax, a large white Antelope, can go Nearly a year in the desert without drinking. The Dorcas Gazelle Gazelle is a north African mà can go for a long time am also without water. Other Notable include the Rhim gazelles Gazelle Gazelle and dama. The Saharan cheetah (Northwest African cheetah) Lives in Algeria, Togo, Niger, Mali, Benin, and Burkina Faso. There coal Fewer Remain 250 mature cheetahs, are very cautious mà, fleeing any human presence. The cheetah avoids the sun from April to October, seeking the shelter of shrubs như balanites and Acacias. They are unusually pale. [27] [28] The other cheetah subspecies (northeast African cheetah) Lives in Chad, Sudan and the eastern region of Niger. Tuy nhiên, it đang extinct in the wild of Egypt and Libya. They are khoảng 2,000 left in the wild cá mature. An oasis Idehan Ubari lake, grasses and Date palms withnative. Other animals include the monitor lizards, hyrax, Sand Vipers, and small Populations of African wild dog, [29] in perhaps' only 14 Countries [30] and red-necked ostrich. There exist other animals in the Sahara (print Particular birds) như African and black-faced silverbill firefinch, Among others. There are crocodiles am also small desert and the Ennedi Plateau Mauritania print of Chad. [31] The deathstalker scorpion can be 10 cm (3.9 in) dragon. Its venom contains large tiền of agitoxin and scyllatoxin and is very dangerous; Tuy nhiên, a sting from this scorpion rarely kills a healthy adult. The ant is unique silver print Saharan Due to the extreme high mà temperatures and the threat of chúng habitat of predators, ants are active outside the nest for only about ten có minutes per day. [32] Dromedary camels are the domesticated animals and Goats nhất commonly found in the Sahara. Because of its qualities of endurance and speed, the dromedary is the favorite animal used by Nomads. Activities are more Likely to human hưởng print which areas of permanent habitat the water (oases) or where water close to the surface Comes. Here, the pressure on natural resources locally can be intense. Populations of large mammals The còn greatly reduced by hunting được for food and recreation. In recent years in the development projects have khởi Algeria and Tunisia Deserts of using water pumped from underground aquifers Irrigated. These schemes often Do lead to soil salinization and Degradation. From Hacettepe University; Researchers (Yucekutlu, N. Et al., 2011) have Reported có có Saharan soil bio-available iron and essential macro and micro cũng some nutrient elements Suitable for use as fertilizer for Growing wheat. [33]