2. Population and Urbanization
• Rate of Urbanization:
– Only 50 years ago, only 3 out of 10 people
lived in cities, most of them in the developed
countries
– Now, about 50% of the people in the world
live in cities
– By 2030, 6 out of 10 people will live in cities
– Most of the new urban growth will be in the
less developed and least developed countries
3. Rate of Urbanization 1950 - 2030 (2005 - 2030 Estimates)
90.0%
80.0%
70.0%
60.0%
50.0% World
More Developed
Less Developed
40.0%
Least Developed
30.0%
20.0%
10.0%
0.0%
1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 2020 2025 2030
4. Population and Urbanization
• For the first time in world history, more
people live in cities than in villages
• All future population growth will be in cities
– People moving from countryside to cities
– Population growth within the cities
• Much new growth will be in megacities
• Most megacities are or will be in Asia:
5. World Population (Total, Urban, Rural) (2005 - 2030 Estimates)
9,000,000,000
8,000,000,000
7,000,000,000
6,000,000,000
5,000,000,000 Total population
Urban population
4,000,000,000 Rural population
3,000,000,000
2,000,000,000
1,000,000,000
0
1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 2020 2025 2030
9. Megacities
• Megacities take up only 2% of the
Earth's land surface
• But Megacities account for
–60% of human water use
–Almost 80% of all human produced
carbon emissions
26. Mitigation
• City Plan
• Building Code
• Insurance
• Laws and Regulations
to prevent and protect
citizens from disaster
• Units to Rescue
• Coordinated
Management
27. Preparedness (1)
• Installing warning system
• Structural adjustments
• Stockpiling supplies
• Resource inventory
Basic Red Cross Supplies
28. Preparedness (2)
• Enforcing laws and
regulations
– Building and landuse permits
– Building and landuse
inspection
• Monitoring
• Emergency drills
• Public education
Emergency
drills at U.S.
university
35. Bangkok: City on the Flood Plain
• Swampland before settlement
• Bangkok called “Venice of the
East” by Westerners
• Major problems facing
Bangkok are water-related:
– Floods
– Water pollution
– Water scarcity in some areas
– Land subsidence
Bangkok
