Global Climate Change and Vulnerability of African Agriculture: Implications for Resilience and Sustained Productive Capacity.

Despite noticeable improvements in recent socio-economic performance in Africa, variations exist across countries and performance is constrained by plethora of factors that inhibit the attainment of Africa’s optimum production potential. Changing climate and environmental factors have contributed to increased transactions costs, lower productivity of factors of production, increased bottlenecks in the production process and investment challenges, especially for small and medium scale farmers in varying degrees across the continent. This paper reviews the impact of climate change on farming activities in Africa. Four countries across the continent are studied, viz. Burkina Faso, Egypt, Kenya and South Africa. We examine how long-term profitability of 4,000 farms vary with local climate, such as temperature and precipitation. To better ascertain the impact of climate variables, the marginal impacts of unit changes in temperatures and precipitation on crop farming activities are studied. Using selected climate scenarios, predictions are made on the extent to which projected climate changes will affect net revenues by the year 2050 and 2100. The findings suggest that climate affects agricultural returns in the four countries. The results further show that there is a non-linear relationship between temperature and crop revenue on the one hand and between precipitation and crop revenue on the other. Overall, the temperature elasticity suggests that global warming is harmful for agriculture across all the countries. These have profound implications for the policy requirements to address the productive capacity and resilience of the agricultural sector. Effort will be required to enhance adaptation at farm, regional and national levels. Policy adjustments will in addition require increased liberalization of the financial system and an implementation of agriculture civil service reforms for better performance of the extension service. This

[1]  William D. Nordhaus,et al.  Climate impacts on aggregate farm value: accounting for adaptation , 1996 .

[2]  Murray Gray,et al.  Global Climates since the Last Glacial Maximum , 1994 .

[3]  S. Nicholson.  Recent rainfall fluctuations in Africa and their relationship to past conditions over the continent , 1994 .

[4]  A. Dinar,et al.  Climate Change, Agriculture, and Developing Countries: Does Adaptation Matter? , 1999 .

[5]  Corinne Le Quéré,et al.  Climate Change 2013: The Physical Science Basis , 2013 .

[6]  I. Darnton-Hill,et al.  Sustainable food security for all by 2020 , 2001 .

[7]  S. Ouda,et al.  Assessing the Economic Impacts of Climate Change on Agriculture in Egypt: A Ricardian Approach , 2007 .

[8]  W. Easterling,et al.  Paper 2. agricultural impacts of and responses to climate change in the Missouri-Iowa-Nebraska-Kansas (MINK) region , 1993 .

[9]  Daneswar Poonyth,et al.  MEASURING THE IMPACT OF CLIMATE CHANGE ON SOUTH AFRICAN AGRICULTURE: THE CASE OF SUGARCANE GROWING REGIONS , 2005 .

[10]  A. Mccalla.  Prospects for food security in the 21st Century: with special emphasis on Africa , 1999 .

[11]  A. R. Orme,et al.  The physical geography of Africa , 1997 .

[12]  H. Mooney,et al.  Human Domination of Earth’s Ecosystems , 1997, Renewable Energy.

[13]  S. Hastenrath,et al.  Variations of East African Climate during the Past Two Centuries , 2001 .

[14]  Jane w. Kabubo-Mariara,et al.  The Economic Impact of Climate Change on Kenyan Crop Agriculture: A Ricardian Approach , 2007 .

[15]  Kenneth Strzepek,et al.  The Impacts of Climate Change on Regional Water Resources and Agriculture in Africa , 2007 .

[16]  S. Jagtap,et al.  Agrometeorological aspects of agriculture in the sub-humid and humid zones of Africa and Asia , 2000 .

[17]  S. Nicholson,et al.  Rainfall Conditions in Equatorial East Africa during the Nineteenth Century as Inferred from the Record of Lake Victoria , 2001 .

[18]  D. Olago.  Vegetation changes over palaeo-time scales in Africa , 2001 .

[19]  C. Rosenzweig,et al.  Potential impact of climate change on world food supply , 1994, Nature.

[20]  L. R. Oldeman,et al.  World map of the status of human-induced soil degradation: an explanatory note. , 1990 .

[21]  A. Dinar,et al.  Will African Agriculture Survive Climate Change , 2006 .

[22]  C. Benson,et al.  The impact of drought on sub-Saharan African economies - a preliminary examination , 1998 .

[23]  John A. Dixon,et al.  Farming Systems and Poverty IMPROVING FARMERS' LIVELIHOODS IN A CHANGING WORLD , 2001 .

[24]  T. Berntsen,et al.  A climate strategy for Africa , 1995 .

[25]  Fredrick H. M. Semazzi,et al.  A GCM study of climate change induced by deforestation in Africa , 2001 .

[26]  S. Nicholson.  Climatic and environmental change in Africa during the last two centuries , 2001 .

[27]  P. Guth.  An explanatory note , 2002, Hearing Research.

[28]  M. Hulme.  Rainfall changes in Africa: 1931–1960 to 1961–1990 , 1992 .

[29]  A. McGuire,et al.  Global climate change and terrestrial net primary production , 1993, Nature.

[30]  R. Ferraro,et al.  Using the Special Sensor Microwave Imager to Monitor Surface Wetness , 2001 .

[31]  S. Nicholson.  Climatic variations in the Sahel and other African regions during the past five centuries , 1978 .

[32]  G. A. Gbetibouo,et al.  Measuring the economic impact of climate change on major South African field crops: a Ricardian approach , 2005 .

[33]  J. Stoorvogel,et al.  Assessment of soil nutrient depletion in sub-Saharan Africa: 1983-2000. , 1990 .

[34]  S. Nicholson,et al.  A re‐evaluation of rainfall variability in the sahel. Part I. Characteristics of rainfall fluctuations , 1993 .

[35]  James W. Jones,et al.  Global climate change and US agriculture , 1990, Nature.

[36]  A. Dinar,et al.  Climate, Water, and Agriculture , 2003, Land Economics.

[37]  Ruth M. Doherty,et al.  African climate change: 1900-2100 , 2001 .

[38]  S. Nicholson.  An Overview of African Rainfall Fluctuations of the Last Decade , 1993 .

[39]  B. Thompson.  The climate of Africa , 1965 .

[40]  G. Lang.  Global Warming and German Agriculture Impact Estimations Using a Restricted Profit Function , 2001 .

[41]  Robert Mendelsohn,et al.  Comparing Forecasts of the Global Impacts of Climate Change , 2004 .

[42]  A. Dinar,et al.  The effect of development on the climate sensitivity of agriculture , 2001, Environment and Development Economics.

[43]  Thomas H. Painter,et al.  Climatic, edaphic, and biotic controls over storage and turnover of carbon in soils , 1994 .