seguridad hídrica: esencial para hacer frente al reto de alimentar a nueve mil millones de personas
TRANSCRIPT
Water Security: A Key Driver of Global Food Supplies
Pr. Mohamed Ait KadiChair GWP Technical Committee
San Jose, Costa Rica, August 9, 2012
Plan of this talk
1. Will food supply keep up with growing demand?
2. What are the key levers 0f a solution?
M. AIT-KADI
Since 1992, 80% of countries have embarked on reforms to
improve the enabling environment for water resources
management based on the application of integrated
approaches as stated in Agenda 21 and affirmed in the
Johannesburg Plan of Implementation
UN-Water Status Report for Rio+20
21st Century a Changing & less Predictable World Profound changes in price relativities with much local variability
>$100 oil; all fossil fuels more expensive
Other non-renewable raw materials – more expensive
Water - scarcer/costlier many places
Land – more competition
A more unpredictable climate
Future increased dependence on what can be grown – Food, Feed, Fiberand Fuel (4Fs)
What hasn’t changed ? The need to eat ~ 9 billion people by 2050 & changing diets
>> The challenge = TO BALANCE FUTURE FOOD DEMAND & SUPPLY SUSTAINABLY
M. AIT-KADI
Food
Security
Geopolitical
Risks
Economic
Risks
Societal
Risks
Env.
Risks
WaterScarcity
ExtremeWeather
F/D/DES
BiodiversityLoss
GovernanceGaps
Globalization
Food PriceVolatility
Oil PriceVolatility
Migration
Chronicdisease
Food Security &
Interconnected Global Risks
M. AIT KADI
Problems can’t be solved by countries acting in isolation
0
20
40
60
80
100
120
140
0
200
400
600
800
US
$/b
arr
el
US
$/t
on
Corn
Wheat
Rice
Oil (right scale)
Source: von Braun 2008 with data from FAO 2008 and IMF 2008.
Diverse policy responses to food crisisTrade
restriction
Trade
liberaliz.
Consumer
subsidy
Social
protection
Increase
supply
AsiaBangladesh X X X X
China X X X X
India X X X X X
Indonesia X X X
Malaysia X X X
Thailand X X X
Latin AmericaArgentina X X X X
Brazil X X X
Mexico X X X
Peru X X X
Venezuela X X X X
AfricaEgypt X X X X
Ethiopia X X X X
Ghana X X
Kenya X
Nigeria X X X
Tanzania X X X
Source: von Braun 2008 with data from IMF, FAO, and news reports, 2007-08.
« Land – grabs »
Rio
ts
PoliticalStability
Food Security
Energy Security
The volatility in food prices in 2008 should be treated as a warning sign of what is to come!
Mohamed AIT KADI GWP/TEC
The age of consequences
State failures
International conflicts
Migrations
Difficulties of supplying cities
Increasing food insecurity
More competition over water resources
Mohamed AIT KADI GWP/TEC
Plan of this talk
1. Will food supply keep up with growing demand?
2. What are the key levers of a solution?
M. AIT-KADI
Will Food Supply Keep up With Growing Demand?
Drivers of Demand are Well Understood
• Population Growth • All in LDCs
• Income Growth
Mostly in LDCs
• Urbanization: Up from 50% to 70%
• Shift in Food Preferences: Wheat, Maize &
Soybeans for Feed
• Biofuels: maize, oilseeds
• Processed Foods
Increased Risk and Uncertainty on the Supply Side
• Limits to Land, Water, Soils, Biodiversity, Forests, Fisheries
• Slowing Productivity Growth
• Stagnant Investment levels in R & D
• Energy prices/High input & transport costs
• Increased Risks and Uncertainty from climate change/variability
• Interlinked International Markets (Globalization, Information & Standards, Supermarkets..)
M. AIT-KADI
Key Drivers of Global Food Suply
1. Growing Scarcity of Water & Land
2. Increasing Water & Land Ineslasticities
3. Declining Agricultural Productivity
4. Threats to Agriculture From Climate Change
M. AIT-KADI
« Thirst for water & Hunger for Land »
Comparing regional long term perspectives
M. AIT-KADI
Regional per capita availability of water is declining
0
2
4
6
8
10
12
14
16
1960 1990 2025
Africa
World
Asia
MENA
‘000 m3
Rising Water Use
In The 20th Century,
Population Grew Three-fold,
But Water Use Grew Six-
fold!
Rivers are Overtaxed
Underground water is being mined at unsustainable rates
and 10% of world grain production
depends on unsustainable aquifer withdrawals.
Asia will be a major importer (China)WANA also;SSA could feed itself with a low increase of per
capita food ratio;Latin America will be a major exporter (Brazil,
Argentina) but with important ecological risksCanada and Russia could benefit from climate
change and increase their export capacityUSA and EU could increase also but in weak
proportions
>>> Food self-sufficiency is not a viable option
M. AIT-KADI
Agrimonde Scenario - 2050% Consumption/Production KCAL
Regions Agrimonde2003
Agrimonde1
MENA - 32% - 63%SSA - 12% -53%LA + 11 % + 32%
Asia - 2% - 19%Ex-USSR -2% +77%
OECD-1990 + 6% + 46%M. AIT-KADI
Key Drivers of Global Food Suply
1. Growing Scarcity of Water & Land
2. Increasing Water & Land Ineslasticities
3. Declining Agricultural Productivity
4. Threats to Agriculture From Climate Change
M. AIT-KADI
Changes within the agricultural sectorIncreasing land & water inelasticities
M. AIT-KADI
Maize production and use for fuel ethanolUSA 1995-2010
Key Drivers of Global Food Suply
1. Growing Scarcity of Water & Land
2. Increasing Water & Land Ineslasticities
3. Declining Agricultural Productivity
4. Threats to Agriculture From Climate Change
M. AIT-KADI
Decapitalisation of Agriculture
Irrigated
Area
Food price index
World Bank lending
for irrigation
2.5
2.0
1.5
1.0
0.5
0
1960 1965 1970 1975 1980 1985 1990 1995 2000 2005
320
280
240
200
160
120
80
40
0
Africa Irrigation
M. AIT-KADI
Agricultural productivity growth is slowing
Source: World Bank Development Report 2008 (figure refers to developing countries only)M. AIT-KADI
World cereal production: Not growing enough
0
300
600
900
1,200
1999 2000 2001 2002 2003 2004 2005 2006 2007*
800
1,200
1,600
2,000
Wheat Coarse grains Rice Total (right)
Source: Data from FAO 2003, 2005-07.
Million tons Total Million tons
70%
M. AIT-KADI
Key Drivers of Global Food Suply
1. Growing Scarcity of Water & Land
2. Increasing Water & Land Ineslasticities
3. Declining Agricultural Productivity
4. Threats to Agriculture From Climate Change
M. AIT-KADI
Model-Projected Runoff Change (%)
[(2041-2060)-(1900-1970)]
(Milly et al., 2005)
Climate Change = A threat multiplier
Increased Frequency & Intensity of
Floods & Droughts
Modified from Puri & Arnold, 2002
Need to Understand the Complex
Relations Between Climate, Land/Water
Use, Surface/Subsurface Flows + Feed
back SUPPLY & DEMAND
Multiple-Aquifer
Stresses
Multiple-Aquifer
Flow Systems &
Flow Directions
Complex Climate
Relations
Regional Flow Systems
GW/SW
Relations
Climate change risks
Expected impact on agricultural output potential
(% change1961-90 compared to 2070-90)
Without carbon fertilization
With carbon fertilization
World -15.9 -3.2
Industrial countries -6.3 7.7
Developing
countries -19.7 -7.7
Middle East/
North Africa -21.2 -9.4
Morocco -39.0 -29.9
Source: Cline 2007.
Daily per capita calorie availability withan without climate change
Source: Food Policy Report, IFPRI, September 2009
World food price increases and climate changevarious scenarios (2010-50)
Food Security will Detrioratein its 4 dimensions
M. AIT-KADI
Conclusion:Long term (2050) global food abundance is not
totally guaranteed;
No reason to become Malthusian and prophesyfamines
But the constraints { reduction of availble lands, water scarcity,increased risks of natural disasters, biodiversity loss, social responsiveness} are soimportant that we have to consider a potential riskfor temporary food scarcity,
And a long term increase of food prices!
M. AIT-KADI
Plan of this talk
1. Will food supply keep up with growing demand?
2. What are the key levers of a solution?
M. AIT-KADI
Produce more food;With higher yields;In all kinds of agriculture, mainly poor;With higher input pricesWith climate change (water scarcity, floods,
droughts) and need for adaptationBeing environmental friendly,But with better prices!!
A NEW EQUATION
M. AIT-KADI
More food must be produced sustainablythrough better water management, the spread and implementation of existingknowledge, technology and best practices, and by investments in new science and technology and rural and social infrastructures that enable farmers to benefit from all of these;
M. Ait-Kadi
More Crop Per Drop!
• The political and economicgovernance of the water and foodsystems (at both national and international levels) must beimproved to increase productivityand sustainbility
M.Ait-Kadi
Policies to help households cope
Eliminate agricultural trade barriers, incl. stop biofuelsubsidies
M.Ait-Kadi
Comment nourrir l’humanité?
Thank you!
This is a unique time in history – decisions made now willdisproportionately influence the future !!! M. AIT-KADI