Water and Food Production issues and solutions in Africa-Prof. Bancy Mati
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Transcript of Water and Food Production issues and solutions in Africa-Prof. Bancy Mati
….FOOD AND WATER SECURITY POST 2015-THE ROLE OF EXPERTS, PRIVATE SECTOR ND
POLICY MAKERS….
Some slides by Prof. Mati
Climate Change: GHG and warming
Climate Change will impact negatively on water availability and food production
0.8° 2.0° 4.0°
Africa is Endowed with Abundant Water Resources
• Africa has about 4,000 cu km of freshwater.
• There are 17 rivers with catchments areas >100 000 km2
• There are 160 lakes >27 km2, • Mean annual rainfall 670 mm/yr• Highly variable rainfall ranging <100 mm
in deserts to over 2,000 mm in rainforests & highlands
• Huge hydropower potential of about 1,750 TWh (12% of the global capacity)
• Vast ground water resources• The continent is surrounded by three
oceans (vast marine water)
• About 65% of Africa’s land area comprises drylands (annual rainfall 100-800 mm)
• Rainfall is erratic, droughts, floods & high runoff losses
• High evaporation losses (up to x 10 annual rainfall)
• Poorly distributed water resources (rivers, lakes)
• High runoff losses (over 50% of rainfall is lost)
• Renewable water resources constitute only about 20% of total rainfall.
But Africa Suffers from Extensive Water Scarcity
Ground Water Resources in Africa remain largely untaped
Source: WHYMAP (2008) Groundwater resources of the world.
INCREASING WATER DEMAND
• Africa’s average population growth rate between 2005 and 2010 was 2.3%, the highest in the world (UNFPA 2009).
• The growth in water demand is not matched by a corresponding development of water resources
• Africa has the world’s lowest per capita water withdrawal at about 170 m3, due not only to poor water resource availability but also underdeveloped water infrastructure and inefficient water management.
• Less than 25% of Africa’s average annual river runoff is being utilized for human developmental activities (Couet and Maurer 2009)
• Total annual withdrawals for the three major water-use sectors of agriculture, municipalities and industries is only 5.5% of internal renewable resources.
• Agriculture is mostly rain-fed and less than 10% of the continent’s cultivated land of 185 million ha or 6% of the total land area is irrigated.
Africa has a Multiplicity of Needs for Water Dev /Use
Water Infrastructure Development:
It’s the turn for Africa now!
Main agricultural & land use systems in Africa
Land degradtion susceptibility in Africa
Agriculture and Land Degradation go together
Source: UNEP 2006
The Africa Water Vision for 2025
Envisions:“An Africa where there is an equitable and sustainable use and management of water resources for poverty alleviation, socio-economic development, regional cooperation, and the environment”
Source: UN/Water Africa 2004
Stop Turning Urban Stormwater = Wastewater
Storm-water runoff should be recycled, not thrown into the sewer system
Efficient water use in irrigation
Sprinkler irrigation to replace surface irrigationSmallholder furrow irrigation Malawi – but for high value crops, lined canals
Micro-sprinkler irrigation in Ghana – All photos by B. Mati Greenhouse farming in smallholder farm in Kenya
Innovations like Fog Harvesting for drinking water
Prof. Imbuga handing over of fog harvesting Equipment at IlmasinPrimary School, Ngong, in Kenya
Issues to tackle in addressing Sustainable Water Use
Declining water
availability/ increasing demand Inefficient
technologies and practices
Policy enforcement disconnect
Declining arable land
area and soil health
How to bring to scale inputs of science in SWU
Capacity of SWU sector across the
value chain
SWU should not get lost in the “missing
middle”
Smallholder agriculture in
transition
Climate change, floods and droughts
Making Use of PartnershipsTypologies of Partnerships
• Official partnerships set up by a number of organisations.
• More bottom-up partnerships initiated by non-profit organisations or groups.
• Short-term alliances created around a particular project or programme.
• Informal partnerships to support ongoing delivery of services and aims.
• Other forms of collaboration to share information and offer mutual support that may be better seen as networks
Research Partners – for synergies, economies of scale and cross-learning.
Financing and investment partners - to leverage finances through collaborative activities, e.g. PPP, matching funds
Implementation Partners- at national, region & international levels e.g. Govts, NGOs
Policy partners – to facilitate policies, legal & institutional support
Water Dev issues of focus (as identified by AMCOW)
– Closing the gap in attaining the MDGs and ‘unserved’ communities– Integrating water as key to poverty reduction and socio-economic
development– Expanding Africa’s water infrastructure assets to achieve this.– Fostering transboundary cooperation– Mobilising the financial resources needed to build the infrastructure– Build and strengthen institutional and technical capacity and skills;
the water data base, information knowledge and monitoring capacity
– Fostering partnership with stakeholders for full participation– Closing the implementation gap between Africa’s agenda and the
policies of Development Partners– Tackling the climate change challenges and building resilient
adaptation systems
The Targets for Africa are aimed at: