The country is located at the southernmost edge of the African continent, between 22 and 35 degrees south latitude and between 17 and 33 degrees east longitude (not including the Prince Edward Islands). It has a coastline that extends for more than 2500 km and lies on two oceans (the Atlantic Ocean and the Indian Ocean). South Africa has an area of 1,219,912 km²; this is approximately 3.4 times the area of Germany. The central plateau, also called the Highveld, lies at an altitude of between 900 and 2000 m above sea level. The land belt sloping down to the coast with a width of 20 to 250 km is called Great Escarpment (Groot Randkant, Great Escarpment). Large parts of the country are geomorphologically and petrographically determined by the sediments of the Karoo Main Basin. In the north, especially in the Bushveld complex, magmatic rocks and very old metamorphic rocks (greenstone facies, serpentinites) outcrop at Barberton.
The Drakensberg Mountains run through the country from the northeast to the enclave of Lesotho in the southeast, where they reach their highest point (3482 m) with the Thabana Ntlenyana. The highest mountain of South Africa is the Mafadi with 3450 m. Northwest of Bloemfontein the Kalahari Desert stretches through Botswana into Namibia. At Cape Agulhas, the southern tip of the continent, the Atlantic and Indian Oceans meet, and to the west lies the Cape of Good Hope (Kaap van die Goeie Hoop).
Most of South Africa's rivers originate in the Drakensberg Mountains and flow east towards the Indian Ocean. The longest river, the Oranje, with 1860 km, also rises in the Drakensberg Mountains, but flows west and flows into the Atlantic Ocean. The Augrabies Falls on the Orange near Upington have a width of about 150 m and are about 56 m high. Other important rivers are the Limpopo, which is the border river to Botswana, Zimbabwe and Mozambique and flows northeast for about 1600 km into the Indian Ocean, and the Vaal (1251 km), a tributary of the Orange. The water levels of these rivers vary greatly.
South Africa includes the Prince Edward Islands in the southern Indian Ocean. South Africa relinquished its territorial claims in Antarctica and to the Bay of Whales in Namibia in 1994.
Climate and vegetation
South Africa has a great differentiation of climatic-orographic major units and vegetation zones. They range from extreme desert in the Kalahari on the border with Namibia to subtropical forests in the southeast and on the border with Mozambique. The western coastal zone has an arid to strongly maritime climate. On the south coast the climate is semi-arid to semi-humid, which is due to the meeting of the cold Benguela Current and the warm Agulhas Current at the Cape of Good Hope. The climate in the interior is fully arid to semi-arid with distinct features of steppe zones, while the east coast is characterised by a semi-humid and distinctly maritime climate. The region around Cape Town has a Mediterranean climate. Snow in winter is only found in the higher mountains.
Due to its size and several other factors (sea currents, altitude), the climate varies between different parts of the country. Several factors are fundamental for the climate distribution: On the east coast flows the warm Agulhas Current coming from the Indian Ocean, which causes warm and watery air to rise. These clouds are formed by complex convection currents between high and low pressure areas and rain out in the area of the east coast of South Africa. However, towards the interior, the rainfall decreases rapidly. On the west coast, however, the cold Benguela Current, fed from Antarctic waters, flows. Together with the changing air pressure conditions, it leads to desertification on the west coast, as the coastal areas are deprived of moisture.
South Africa's location in the southern hemisphere means that the seasons are opposite to those in the northern hemisphere. In winter, between June and August, there can be snow in the Drakensberg, on the Highveld and in Johannesburg (1753 m) and the surrounding area, and temperatures drop sharply at night. During the day temperatures rise to about 23 °C, in summer to 30 °C. In the Boland, the region around Cape Town (15 m), the climate is cool in winter with drizzle. From November to March it is warm to hot and dry there. In the coastal areas of KwaZulu-Natal, including Durban (5 m) and along the east coast, humidity is high, but there is usually a cooling breeze from the sea. Temperatures here are between 25 and 35 °C all year round.
The plateau in the east of the country is characterised by warm, rarely uncomfortably high temperatures. The Karoo semi-desert and Namaqualand, on the other hand, experience extremely high temperatures. Here the annual rainfall is less than 200 mm. The few winter rains occur very irregularly.
There is a constant, fresh breeze in the Western Cape. The summers are warm and even the winters mild. The south coast is characterised by a temperate climate. Dry vegetation predominates with extensive savannah areas, which merge into the Kalahari Desert and Namaqualand in the west and the Karoo in the southwest. Closed forest stands are only found in the rain-fed east and southeast. Only smaller contiguous patches are present along the Great Rim Steps, for example in the Amathole Mountains and the Drakensberg Mountains of Natal, and in the coastal area of the Eastern Cape around Knysna. Summer rains can fall in catastrophic amounts, causing significant soil erosion.
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Climate diagram of Upington
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Southern Africa is located in a predominantly semi-arid and arid zone, which makes it very vulnerable to climate change. The consequences of climate change are increasing heat, longer periods of drought and lower precipitation. In inland South Africa, the temperature has risen by about two degrees Celsius within 100 years. It is also feared that the spread of malaria and schistosomiasis could be favoured in some parts of the country as a result.
The National Water Resource Strategy of 2013 highlights the current focus of South African government policy on the impacts of climate change in Southern Africa. The land-based impacts are particularly felt through changes in soil moisture and runoff in water bodies, as well as the effects of increasing evaporation and changing temperatures in aquatic systems.
flora and fauna
South Africa is one of the world's megadiverse countries, with a very large number of endemic species, genera and families of plants and animals, as well as a wide variety of ecosystems. Among other things, more than 20,000 different plants are native to the area. The Fynbos region, a stretch of land in the Western Cape province, is home to more than 9000 species, making it one of the most ecologically diverse spots on earth. For this reason, this region is considered by botanists to be one of the six floral kingdoms of the world under the name Capensis. It is by far the smallest of these plant kingdoms. Due to its great vulnerability, the Cape flora is a hotspot of biodiversity on earth.
The majority of plants in South Africa are hard evergreens with fine, needle-shaped leaves. Other typical plants are the sugar bushes (genus Protea), which belong to the flowering plants and of which there are about 130 different species in the country.
While there is a great variety of flowering plants in South Africa, forests are very rare to find. Only about one percent of the total area is forest land, which is almost exclusively located in the humid coastal plain along the Indian Ocean in KwaZulu-Natal. Today the forests consist mainly of imported tree species, such as eucalyptus and pine. The original forest found by European settlers on their arrival has been largely cleared; at the same time, a green belt of introduced tree species has been planted around Johannesburg. Remnants of the endemic forest stands from this can be found, for example, in the Auckland Nature Reserve near Hogsback. A number of the introduced tree species have proved problematic in South Africa. They negatively alter the water balance, lead to more intense bush fires and more soil erosion, and displace native species. With programmes such as Working for Water, certain species are therefore targeted for removal.
At the beginning of the 21st century, South African hardwood trees such as the broad-leaved stone yew, the stinkwood (Ocotea bullata) and the black ironwood (Olea laurifolia) were placed under conservation by the government. This is also to ensure the continued existence of the Cape Parrot. This long-winged parrot species is considered the rarest African large parrot and is only found in the highly fragmented stone ruby forests of South Africa.
In the very hot and dry Namaqualand near the west coast there are several species of water-storing succulents such as Aloe and Euphorbia. The predominant vegetation in the interior is grassland, which is especially found on the Highveld. Here various grasses, low shrubs and acacias dominate. The vegetation becomes sparser towards the northwest due to the low rainfall. The grass and thorn savannah east of the Kalahari Desert changes in the course towards the northeast to a wet savannah with denser vegetation. In the area around the northern end of the Kruger National Park there are particularly many baobabs.
The rich wildlife can be seen in hundreds of small game reserves and the large national parks, of which the Kruger National Park is the largest. South Africa is home to more than 300 species of mammals, more than 500 species of birds, more than 100 species of reptiles and numerous species of insects. The country is home to a great many species of large animals, including the African "Big Five", the five big game species once most feared by hunters: lion, leopard, buffalo, elephant and rhino. The rhinos are represented by white rhino and black rhino. Especially the savannahs in the north are populated by numerous antelope species such as impala, kudu, nyala, blue wildebeest or waterbuck. In addition, numerous other large animal species are found here, such as giraffes, hippos, bush pigs, warthogs, plains zebras, cheetahs, hyenas and wild dogs. Besides the Kruger National Park, the Hluhluwe-iMfolozi Park and the Addo National Park are among the most famous national parks. In the steppe areas of the south, the so-called Karoo, some species occur that are missing in the savannah areas of the north. These include white-tailed wildebeest, blesbok and mountain zebra. The now extinct quagga and bluebuck were once found here. The remaining typical Cape fauna can be found today in the Mountain Zebra National Park, for example. In the semi-desert areas of the Kalahari, which extends into South Africa in the northeast, spitbuck and springbuck are characteristic. They are protected along with other species, such as lions and cheetahs, in the Kalahari-Gemsbok National Park, for example. Among the birds of South Africa are ostriches, flamingos and numerous birds of prey. Furthermore, about 170,000 spectacled penguins live on the coasts as well as on the islands and are strictly protected.
See also: List of National Parks in South Africa