4 Class #5 Africas Physical Geography And Development Impact

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    4 Class #5 Africas Physical Geography And Development Impact - Presentation Transcript

    1. Africa's Physical Geography and Development impact 06/04/09
    2. Physical Geography and Development
      • Old theory of environmental determinism disputed but….environment matters
        • Most people live in drier areas
        • Few natural harbors
        • Few navigable rivers
        • Agriculture is important
        • Natural resources
        • Environmental challenges and change
      06/04/09
    3. Africa’s Climate and Biogeography
      • Dynamics of Climate
      • Climatic Regions
      • The relationship between climate and Africa’s People
      • Ecosystem and African Biomes
      • Ecological concerns
      06/04/09
    4. Climate
      • Altitude and Relief
        • Vegetation changes
        • Higher elevation and settlement
      • Spotty rains in some places
        • Irrigation concerns
      • Cloud cover and dust
        • Dust storms from the Sahara
      • Varies by region
      06/04/09
    5. Climate Regions (p 77)
      • Equatorial
        • Heavy rainfall, little dry season
        • Monrovia, Calabar
      • Humid Tropical
        • Slightly less rainfall, but hotter
        • Kampala
      06/04/09
    6. Climate Regions (p 77)
      • Tropical wet and dry
        • Lengthy rainy and dry seasons
        • Northern Hemisphere rainy season May and September
        • Southern Hemisphere rainy season: November and March
      • Tropical steppe
        • Semi-arid zone
      06/04/09
    7. Climate Regions (p 77)
      • Desert
      • Mediterranean
        • Winter rain
        • Temperate
        • Southern and northern tips
      06/04/09
    8. The relationship between climate and Africa’s People
      • Historical climate change
        • Sahara not always a desert
        • Expanding Sahel
      • New Climate change
        • Africa at more risk because of poverty, increased risk of vector born diseases like Malaria, and little resources for effective response
        • Largely dry areas to become even hotter and drier
        • Coastal areas to flood.
      06/04/09
    9. The relationship between climate and Africa’s People
      • Climate and Human Development
        • Increased vulnerability to subsistence farmers due to drought
        • Changing climatic conditions mean high food prices for urban Africa and persistent poverty and underdevelopment
      • Are these predictions coming true?
        • Other competing explanations
      06/04/09
    10. Climate Change and armed conflict in Africa
      • As the climate warns and dessert expands conflicts arise between groups in within Africa.
        • Sudan’s conflicts, environmental degradation in the context of climate change
      • Links to resource extraction: oil might float on water, but each is extracted “out of Africa” straining Africa’s environment and people
        • Bore holes depleting ground water and issues of oil extraction and deforestation
      06/04/09
    11. Ecosystem and African Biomes
      • Eco-System-“System” relationship of energy between biotic and abiotic,
        • mostly tropical in Africa
      06/04/09
    12. Ecosystem and African Biomes
      • Bionome- region where climate, vegetation, fauna, and soils characterized by uniformity.
        • Characteristics generally correspond
        • Not exact boundaries
        • Can change because of natural or human actions
      06/04/09
    13. Africa’s Bionomes
      • See Table, Map 6.1 86-87
      • Tropical Rain forest
      • Moist woodland savanna
      • Dry parkland savanna
      • Semidesert
      • Desert
      • Temperate grassland
      • Montane
      06/04/09
    14. Africa’s tropical Rain forests
      • West Africa; Cameroon through Sierra Leone, Congo basin and Madagascar
      • Oxisols-> few nutrients in soil and little organic matter caused by heavy “soil leaching” through heavy rainfall
      • Shifting Cultivation main human use because of oxisoil and local people manage through IK
      • Despite poor soil, greatest diversity of animal life due to high biomass
      06/04/09
    15. Moist woodland savanna
      • Guinea savanna-central Africa north of Equator; Miombo south central Africa
      • Humid tropical climate; Miombo have wet and dry seasons
      • Diverse soil type
        • Oxisols and Ultisols leached in wetter regions
        • Alfisols with high aluminum and iron somewhat leached with greater organic matter
        • Agriculture limited to derived savannas of forest margins with set fires
      06/04/09
    16. Dry parkland savanna (Sudan Savanna)
      • “ Safari” animal landscape
      • Thin central African strip and east Africa
        • Serengeti Plain
        • Baobab tree
      • Ustalfs type of Alfisol
        • less leached
        • Often has higher organic content
      • 5-8 month dry season
      06/04/09
    17. Semidesert (Sahel)
      • Zone between Savanna and desert
      • Heavy erosion from wind and water
      • Desertification
      06/04/09
    18. Desert
      • Sahara in north, Kalahari and Namib in the south
        • Namib plants depend on frequent fogs (remember air masses)
      • Aridisols with low organic content
        • Stalinization
        • calcification
      06/04/09
    19. Temperate grassland (Veldt)
      • High Plateau of eastern South Africa
      • Similar to Iowa; dominated by grasses with tries only at rivers
      • Deep and fertile soils (Alfisols)
      • Basis of some of the planet’s most prosperous agriculture
      06/04/09
    20. Mediterranean
      • South African Cape and Mediterranean coast
      • Hot dry summers with cool moist winters
      • Xerophytic (drought resistant) vegetation
      • Brownish colored soil with high natural fertility ((Alfisols(Xeeralfs))
      06/04/09
    21. Montane
      • East African mountains and other isolated mountain areas
      • Vegetation zoned vertically
        • Savanna ->
        • Montane forest ->
        • Bamboo forest ->
        • Alpine tundra with ice at top
      • Soil quality varies on zone
      06/04/09
    22. Ecological concerns and Sustainable Alternatives
      • Deforestation
      • Desertification
      • Human implications of and for environmental change
      • Sustainable Alternatives
      06/04/09
    23. De-forestation
      • Connected to climate change when oxygen not produced and carbon not stored
      • Soil Erosion
      • Tropical forests of West Africa and Madagascar under threat
        • Development (roads, agriculture forestry endangers west African forests)
        • 5 million h/a lost or .8% of total lost each year
      06/04/09
    24. De/Re-forestation: continued
      • Good news on IK and forest builders in Guinea
      • Greenbelt Movement in Kenya: Wangari Maathai
        • Started in Kenya for women’s empowerment and reforestation for better local environment (erosion prevention)
        • Development, HR, Feminism, Environment GIScience connection to reforestation, http://www.greenbeltmovement.org/n.php?id=116
        • Won 2004 Nobel Peace Prize
          • Climate, environment, development and conflict connection
      06/04/09
    25. Desertification
      • 1970s Sahel drought and Desertification?
        • Is it the process of land degradation or end result?
        • Climate or Social practice change?
      • Development and Desertification
        • Kenya’s Rendille pastoral people pushed to cattle over goat, camel, and sheep by gov’t policy
        • As a result overgrazing near water for cattle and continued poverty for Rendille
        • Gov’t ignorance of IK and geography
      06/04/09
    26. Human implications of and for environmental change in Development
      • Dams, Development and Human Displacement in Africa
          • Akosombo-Ghana-84,000 people displaced
          • Kossou- Ivory Coast 85,000 people displaced
          • Kainji-Nigeria-50,000 displaced
      06/04/09
    27. Africa’s human loss due to environmental dumping
      • Cote I’vore’s toxic dumps, http://news.bbc.co.uk/2/hi/africa/6231946.stm
      • Dandora Dumping Site, Nairobi
      06/04/09
    28. Sustainable Alternatives
      • Agro-forestry- tree farming
      • Alley cropping-planting crops between rows of leguminous shrubs
      • Establishing shelterbelts and help communities to undertake tree planting projects help address related problems of fuel wood and desertification
      • Importance of Greenbelt movement
      06/04/09
    29. Africa’s natural resources
      • Extractive mineral resources
        • Africa’s minerals and world economy
        • Extraction: underdevelopment and conflict
      • Water
      • Flora and Fauna as natural resources
      06/04/09
    30. Africa’s mineral’s and the world economy
      • Mining and mineral trading in pre-colonial Africa
        • Iron, gold, copper, and tin mined for domestic utilitarian and ceremonial objects (see UI museum's Africa Art Collection)
        • Some Iron making in East Africa, Nubia, Nok (Nigeria) by 700 BC
        • Tran-Saharan Trade of salt
      06/04/09
    31. Africa’s mineral’s and the world economy: continued
      • Colonial extraction
        • South African Witwatersrand gold and Kimberley Diamonds
        • Belgium Congo; Katanga copper, Congolese diamonds
        • Angola, Sierra Leone, South West Africa (Namibia): Diamonds
      06/04/09
    32. Africa’s mineral’s and the world economy: continued
      • Post colonial Extraction
        • Some new mining I.e. Diamonds in Botswana
        • Black Gold (Oil): Nigeria, Equatorial Guinea, and southern Sudan, maybe Ghana?
      06/04/09
    33. Africa’s mineral’s and the world economy: continued
      • What and Where (Map p330)
        • Metals
          • Gold-South Africa’s Transvaal, Ghana, Zimbabwe, and DRC, Mali
          • Copper: Zambia, DRC, Botswana, Zimbabwe
          • Managnese: Gabon and Ghana
          • Iron Ore: South Africa, Mauritania, Algeria, Zimbabwe, Morocco
        • Industrial minerals
          • Diamonds: S.A., Botswana, Namibia, Angola, DRC, Tanzania, CAR, Ghana, and Sierra Leone
      06/04/09
    34. Black Gold and other mineral fuels
      • Black Gold-Nigeria, Angola, Congo-Brazzaville, Gabon, Cameroon, Equatorial Guinea, Sudan now Chad too.
        • Ghana?
      • Natural Gas where there is oil, but high development costs and cheap Russian competition inhibit African natural gas industry
      • Coal- South Africa
      06/04/09
    35. Africa’s Minerals and the World Economy: Continued
      • $50 billion in minerals extracted each year with most of it exported
      • Extraction wealth in Nigeria, South Africa, Botswana, Gabon, and Equatorial Guinea
      • Africa losing market share because of accessibility of former USSR in ’90s and recent instability in countries of extraction, but still has large amounts of mineral wealth
      06/04/09
    36. Mining and Underdevelopment
      • Dependency on exporting primary commodities except industrialized South Africa where processing is done
        • But South Africa’s industrialization propped up by Apartheid's low wages
      • Profits from extraction invested “out of Africa” with no value added in Africa
        • Only low skill/low pay employment gained
        • Health (HIV, enviro-health), environmental, and community costs greater than gain for community
      • Mineral Looting and “Conflict Diamonds”
        • Angola, Sierra Leone, Liberia, DRC
      06/04/09
    37. Mining and Underdevelopment: continued
      • Mineral Looting and “Conflict Diamonds”
        • Angola, Sierra Leone, Liberia, DRC
      • Social and Health effects of migrant labor in extraction
        • Broken families
        • HIV/AIDS
      06/04/09
    38. Africa’s Water Resources
      • Quenching Africa’s human thirst
      • Rarely used for transport (few navigable rivers)
      • Energy resources from hydro-electricity
        • Akosombo in Ghana
        • Kariba on Zambia/Zimbabwe
        • Inga in DRC
        • Cabora Bassa- Mozambique
      • Irrigation
      06/04/09
    39. Africa’s water resources: continued
      • Fisheries
        • Lake Victoria ecosystem destabilization
      • Domestic and Industrial Use
        • “ water, water, everywhere, but not in the pipes”
        • Water resource and Gender disparities
        • Poor pay more than rich who get piped water
        • Water given toward industrial uses rather than for personal consumption
      06/04/09
    40. Africa’s Water Challenges
      • Water Scarcity
        • Cross border water disputes in arid areas, potential downstream conflicts over Nile, and Senegal rivers
        • Trade offs between industrial and consumer use
      • Water pollution
        • Agricultural and mining runoff including phosphate nitrogen discharge creating plant growth
        • Niger Delta’s oil pollution
        • Raw sewage in drinking water
      • Eco-system degradation
        • Dam flooding
        • Species loss; ie Lake Nukuru
      06/04/09
    41. Flora and Fauna as economic resources
      • Timber Industry
      • Vegetation in domestic local economies and IK
      • Fuelwood
        • ¾ of Africa’s engery needs in both fire wood and charcoal
        • Contributes to deforestation
        • Solution in Greenbelt
      • Fuana as Game meat
      • Fauna as extractive products (Ivory Trade)
      • Fauna and Tourism and connection to both conservation and colonial displacement practices
      06/04/09
    42. Indigenous people vs. Game reserve policies
      • Wild life parks at expense of local people
      • Continuation of displacement from land from colonialism
      • Denies IK and early practices of living with environment.
      • Wildlife co-management, but who has power?
      • Do conservation practices further alienate Africans from their land and reinforce colonial power dynamics for western tourists?
      • See map 362
      06/04/09

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