Oct 23, 2018 · The word “tropical” often brings to mind rainforests, colorful birds, and lush, dripping foliage, but the vast majority of our planet’s middle region is actually quite dry. “The ratio is something like 100 to 1,” says Jian Lu, a climate scientist at the Pacific Northwest National Laboratory in Richland, Washington.
Dec 06, 2019 · Sahel region is the semiarid transitional African region that stretches westward from the south of Sahara Desert to the tropical savannas, expanse over grassland, shrubs and part of Sahara Desert. The latitude range covers between 10°N and 20°N, south of Senegal on the Atlantic coast and east reaching Eritrea on the Red Sea coast.
The Sahel has a tropical semi-arid climate (Köppen climate classification BSh). The climate is typically hot, sunny, dry and somewhat windy all year long. The Sahel's climate is similar to, but less extreme than, the climate of the Sahara desert located just to the north. The Sahel mainly receives a low to very low amount of precipitation ...
- 3,053,200 km² (1,178,800 sq mi)
- Tropical and subtropical grasslands, savannas, and shrublands
- 200 and 400 meters (660 and 1,310 ft)
- Historical Role
- Modern Significance
- Habitat and Biodiversity
- Environmental Threats and Territorial Disputes
The Sahel region of Africa is an ecological belt that stretches from the Atlantic coast of Senegal in the west to the shores of the Red Sea in Sudan. It extends for approximately 3,360 miles and acts as a transitional ecoregion between the Sahara desert to the north and the more humid and tropical savanna to the south. In the recent decades, the Sahel region has been experiencing high levels of desertification due to human activities and climate change. It has been reported that its width is decreasing as the Sahara Desert expands southwards.
Historically, the Sahel is important for having been the first area used for agriculture in Africa. In the 9th and 18th centuries, it was home to a number of Sahelian kingdoms. During the colonization of the continent, the region became an essential part of the slave trade, and the French took control of the region as part of the French West Africa. The east of the region was annexed by Egypt and remained under the Islamic rule. After the partition of Africa, particular regions of the Sahel became part of the country as we know them today. In spite of the harsh climatic conditions, the region is home to millions.
In the 1960s and 70s, the region experienced some of the worst droughts in Africa. States and international organizations are creating measures to fight back, including planting drought-resistant crops such as sorghum and millet. Today, the Sahel region provides a buffer zone that prevents the Sahara Desert from expanding southwards. The region is also home to several species of animals, birds, and insects. During the wet season, arable parts of the region are utilized for crop production that is relied upon by the people during the dry season. The season is also vital for migratory birds that make pit stops at water collection points.
The Sahelian climate is tropical semi-arid with hot summer. The monthly maximum mean temperature ranges between 33° to 36°C while the minimum temperature ranges from 64° to 70°. It is covered in savannah grassland, woodlands, and shrublands. The Acacia tortillisareis the dominant species of tree in the region. The grasses growing in the grasslands are seasonal, they sprout during the wet season and become scarce during the dry season. The region provided a habitat for grazing mammals, mainly gazelles, Bubal Hartebeest, and predators such as lions and wild dogs. Most of these animals have either been hunted down or migrated to other places in search of more habitable habitats.
The Sahel region has witnessed some of the longest armed conflicts in the world. The Janjaweed militia terrorized parts of Sudan and took over the oasis of the Sahel region in Sudan denying thousands of people access to water. Other parts of the Sahel are also experiencing conflicts. On the surface,it might seem that the conflict is due to territorial and cultural differences but researchers and peace organizations have determined that dwindling water and pasture reserves are the core reasons for the conflict.
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- Climate of The Sahel Region
- Geography of The Sahel Region
- Biodiversity of The Sahel Region
- Desertification in The Sahel
The Sahel region experiences a tropical semi-arid climate, mainly hot and dry conditions throughout the year. The Sahelian climate is influenced by the dry Harmattan winds as well as wind movements within the inter-tropical convergence zone. Rainfall in the region is very low and irregular with an annual precipitation of 200-600mm mainly during the May-September monsoon season. Most of the rain falls in the south. Temperatures, like rainfall, vary from region to region but are mostly hot thro...
The Sahel is a geographically diverse region featuring a flat terrain with an average elevation of 656 – 1312 feet. The terrain is dotted with isolated plateaus, mountain ranges, steppes, thorny shrublands, grasslands and the Savannah which is the primary vegetation zone. Due to the hot temperatures and highly permeable sandy soils, the region has almost non-existent surface water. Mountainous areas and lake and river deltas such as the Chad and Niger deltas, within the Sahel have been separa...
The Sahel lacks in a wide variety of species mainly due to the climatic conditions leading to increased migration of wildlife. The rate of endemism in animals is also extremely low. Species found within the region include the Dorcas gazelle, the Dama gazelle, hartebeest species, and predators such as the wild dog, cheetah, and lion. Populations of these species are however under pressure from human-wildlife conflicts as well as environmental factors. The sahel region is covered by savannah an...
The Sahel region is vulnerable to desertification due to global warming. Additionally, unstable climatic patterns makes sustainable agriculture difficult. Soil erosion and overgrazing have also contributed to the expansion of the Sahara desert conditions into the relatively mild Sahel region. Over-population in the marginal areas result in exerting pressure on the prodyuctive areas. Desertification has led to threats of food security to the residents of these areas while endangering the exist...
- Joyce Chepkemoi
Nov 07, 2020 · Mali - Climate Mali is located in western Africa at a latitudes of 10 to 25°N, straddling the sub-tropical band called the Sahel.
The climate of the Sahel area is typically an arid and unstable environment. This is a most problematic environmental zone because it is hard to operate agriculture with very little precipitation. The Sahel area is a predominately sparse savanna vegetation of grasses and shrubs. It only
Stretching 5000kms from Senegal’s Atlantic shorelines across to the Red Sea, the area transforms from the dry and semi-arid Saharan desert climate of North Africa to the humid and tropical conditions of Sub-Saharan Africa. Many of the world’s poorest and insecure countries are found in the Sahel including Mali, Burkina Faso, Chad and Niger.
Nov 14, 2019 · The UN Special Adviser of the Secretary-General for the Sahel, Ibrahim Thiaw, described the Sahel as "arguably one of the most vulnerable [regions] to climate change." We will focus on the Sahel, a region that spreads from East to West in Africa and divides the continent between the desert in the North and its tropical grounds in the South.