Ironstone Plateau
Ironstone Plateau | |
|---|---|
  Ironstone Plateau | |
| Coordinates: 5°58′N 27°23′E / 5.96°N 27.39°E | |
| Location | South Sudan |
| Elevation | 900 m (3,000 ft) |
The Ironstone Plateau (jabal hadid) is a region in the south and west of South Sudan.
Topology and rainfall
The land in the south and west of South Sudan slopes down to the northeast from the
Nile-Congo Divide towards the Bahr el Ghazal swamps. The divide is formed by a plateau rising 800 to 1,000 metres (2,600 to 3,300 ft) above sea level, with some peaks that rise to 1,700 metres (5,600 ft). Rainfall is higher on the plateau than in the lower clay floodplains.[1]
The rainy season lasts from May until November. Annual rainfall is 700 to 900 millimetres (28 to 35 in).[2]
The plateau drains into the floodplain through rivers that cross an ironstone peneplain and then spread out into deltas and swamps.[1]
The soils of the plateau have little capacity to hold water, so most of the run-off drains into the floodlands.[3]
The many streams draining the plateau have formed steep and narrow valleys.[4]
Soil and vegetation
The Ironstone Plateau takes its name from the hard red
lateritic soil called ironstone
that covers almost the entire area.
These soils are often thin and may be unsuitable for agriculture, except in the Green Belt in the extreme southwest of
The country north and east of the ironstone plateau is covered in clayish black cotton soil, mostly grasslands that are prone to flooding. The black cotton soil cracks when it is dry, but expands and becomes sticky in the rain, making travel difficult. The ironstone plateau has more trees and travel is easier.[6]
The plateau and peneplain are mostly wooded.[1]
People and economy
The people of the plateau generally speak Ubangian languages while the people of the floodplains are Nilotic.[7] The plateau population includes
They raise some livestock and engage in rain-fed agriculture, growing cereals such as Sorghum and pearl millet, vegetables and cassava in mixed croppings.[9] Other crops are oil seeds, groundnuts, sesame, cowpeas and okra, and mangoes, citrus and melons.[2] The best soil for agriculture is beside the streams that drain the plateau.[4] The forests yield mahogany from the Raga region and plantation teak.[2]References
Citations
- ^ a b c Howell & Allan 1994, p. 269.
- ^ a b c Potential in the Agricultural Sector: Riverbend.
- ^ Howell & Allan 1994, p. 282.
- ^ a b Barbour 1961, p. 319.
- ^ Beswick 2004, p. 12.
- ^ Ryle 2011, p. 17.
- ^ Badal 1994, p. 108.
- ^ Ryle 2011, p. 41.
- ^ Howell & Allan 1994, p. 207.
Sources
- Badal, Raphael K. (1994). "Political Cleavages with the Southern Sudan". Short Cut to Decay: The Case of the Sudan. Nordic Africa Institute. p. 108. ISBN 978-91-7106-346-5. Retrieved 2013-05-07.
- Barbour, K.M. (1961). "A Geographical Analysis of Boundaries in Inter-Tropical Africa". Essays on African Population. Taylor & Francis. GGKEY:W5HTG750C3U. Retrieved 2013-05-04.
- Beswick, Stephanie (2004). Sudan's Blood Memory: The Legacy of War, Ethnicity, and Slavery in Early South Sudan. University Rochester Press. ISBN 978-1-58046-151-1. Retrieved 2013-05-07.
- Howell, P. P.; Allan, J. A. (1994-07-14). The Nile: Sharing a Scarce Resource: A Historical and Technical Review of Water Management and of Economical and Legal Issues. Cambridge University Press. ISBN 978-0-521-45040-9. Retrieved 2013-05-07.
- "Potential in the Agricultural Sector in South Sudan". Riverbend Consultants Ltd. November–December 2011. Archived from the original on 2017-12-10. Retrieved 2013-05-07.
- Ryle, John (2011). Sudan Handbook. Boydell & Brewer Ltd. p. 17. ISBN 978-1-84701-030-8. Retrieved 2013-05-07.