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Food Production to Halve By 2020

UN Integrated Regional Information Networks

NEWS

25 September 2007

Posted to the web 25 September 2007

Johannesburg

Food security in Africa is likely to be "severely compromised" by climate change, with production expected to halve by 2020, according to climate change experts.

The projections are contained in a report launched last week in London by the Intergovernmental Panel on Climate Change (IPCC), which was followed by an experts' panel discussion.

"The discussions last week concluded that Africa is likely to be the most affected by climate change partly because of the increasing aridity in the north the Sahel and Southern Africa: and these are the most populous parts of the continent," said Martin Parry, the co-chair of the IPCC's working group which authored the report. He also listed the lack of technology available to adapt to environmental change as other aspects which would make the region vulnerable.

About 25 percent of Africa's population - nearly 200 million people - do not have easy access to water; that figure is expected to jump by another 50 million by 2020 and more than double by the 2050s, according to the report.

Over 95 percent of Africa's agriculture depends on rainfall, according to the UN's Food and Agriculture Organisation (FAO). "Models indicate that 80,000 square km of agricultural land in sub-Saharan Africa currently deemed constrained will improve as a result of climate change. However, 600,000 square km currently classed as moderately constrained will become severely limited", according to the FAO.

As the global average temperature rises by one to three degrees Celsius, northern industrialised countries may well gain in food production, but in lower latitudes - especially in subsistence sectors, where rain fed agriculture is the norm - even with a minimal rise in global temperature crop potential will most probably decline, according to the FAO.

This year drought-affected parts of southern Africa - Zimbabwe, Swaziland and Lesotho - experienced a 40 percent to 60 percent reduction in maize production, for which global warming was partly to blame, according to the World Meteorological Organisation (WMO).

But the IPCC report was more cautious. "The contribution of climate to food insecurity in Africa is still not fully understood, particularly the role of other multiple stresses that enhance impacts of droughts and floods and possible future climate change".

However, the report warned that crop revenues in Africa could fall by as much as 90 percent by 2100 and predicted that wheat production was likely to disappear from Africa by the 2080s.

Mitigate

"It is too late to avoid all climate change impact", warned Parry. "Our choice now is between a damaged world and a severely damaged world...and if we do not restrict carbon emissions now then we may well embark on a pathway to a global warming well above two degrees Celsius".

Our choice now is between a damaged world and a severely damaged world...and if we do not restrict carbon emissions now then we may well embark on a pathway to a global warming well above two degrees Celsius

Scientist have speculated that even holding the temperature increase to two degrees Celsius, a target adopted by the European Union, was too high and enough to trigger melting of the Greenland ice sheet.

Human drivers within Africa are also affecting its ecosystems. Dependency on fuelwood and charcoal as sources of energy in rural areas contribute to about 80 percent to 90 percent of the residential energy needs in low-income households. Besides, fire incidents represent a huge threat to tropical forests in Africa, according to the IPCC report. "An estimated 70 percent of detected forest fires occur in the tropics, with 50 percent of them being in Africa."

Parry called on the industrialised countries participating this week in the UN's annual general assembly debate, which is focusing on climate change this year, to help the developing world by providing them with technology to develop greener energy alternatives such as solar power.

Build resilience

Faced with extreme poverty and lack of resources, African countries should also concentrate on building it people's resilience, said Parry. "Countries must attempt to reduce the vulnerability of its people and draw up adaptation plans".

The IPCC report suggests water-harvesting system to supplement rain-fed farming, weather insurance, national grain reserves, cash transfers and school feeding schemes as adaptation measures. It also highlights the benefits of biotechnology research in Africa if it could lead to drought and pest-resistant rice, drought-tolerant maize and insect-resistant millet, sorghum and cassava.

A summary of the IPCC report was published in April this year.

The IPCC set up by the WMO and the United Nations Environment Programme in 1988 is the world's most authoritative voice on climate change. The panel comprising leading world experts assesses scientific, technical and socioeconomic information to understand the risk of climate change and draws up options for adaptation and mitigation.

This report does not necessarily reflect the views of the United Nations

Copyright © 2007 UN Integrated Regional Information Networks. All rights reserved. Distributed by AllAfrica Global Media (allAfrica.com).

posted to ClimateConcern