major trends in urbanization and urban environment · global urbanization since early 1900 has been...

Major trends in urbanization and urban environment

Shobhakar Dhakal

Global urbanization since early 1900 has been unprecedented and Asia is the front runner

• World urban population: 3.2 billion (49% of world population of 6.5 billion in 2005, will be 50% by 2008?)

• Asia hosts largest world urban population (Asia 1.6 billion, Europe 0.5, Africa 0.3, North America 0.3, Latin America, Caribbean and Oceania 0.4 ‐ in 2005)

• China, India, USA have largest urban population in 2005 as countries

• Cities and Asia (2005): – 11 out of 20 mega‐cities (over 10 million)– 17 out of 30 cities of 5‐10 million– 184 out of 364 cities of 1‐5 million– 225 out of 455 cities of 0.5‐1 million

Source: United Nations, Department of Economic and Social Affairs, Population Division (2006). World Urbanization Prospects:The 2005 Revision. Working Paper No. ESA/P/WP/200.

Asian cities are facing severe challenges already

• High density settlements demand better planning and management which have proved challenging

• Congestion: Bangkok looses 6% of its GDP due to congestion

• Air pollution: Most of the Asian cities have PM10 levels higher than WHO/USEPA guideline value

• Solid waste: Generation rates are increasing with rising income; management and disposal are becoming serious concerns

• Waste water: Volume is getting bigger and bigger

Annual Average Ambient Concentrations of PM10 in selected Asian Cities (2005)

None of the large Asian cities meets the WHO guideline for PM10

Average concentration of PM10 is approx. 80 ug/m3 has changed little since 1995

Slide courtesy: Dr Gary Haq and Dr Dieter Schwela, SEI

What went wrong‐ in general?

• Gross failure of urban planning

• Urban growth without enough time, resources, institutions, and capacity to put infrastructure and system at place – Too much pressure from motorization at early stage of economic development

• Lack of serious political will/commitment and poor institutional arrangements

• More than policy/plan‐ implementation failure

Further urbanization forces us to think innovatively

• Urban population will grow twice as faster as compared to total population growth (1.78% vs. 0.95%‐ annual rate for 2005‐2030 projected) resulting 4.9 billion (about 60% of total population) by 2030 (out of 8.2 billion)

• Almost all global population increase come from urban population in developing world

• 1.8 billion urban population will be added in 2005‐2030 out of which 1.1 billion will be added in Asia alone

UN, 2005 update

A new issue- climate change has emerged which cities can no longer ignore

Perce

ntage

of G

lobal

Annu

al Em

ission

s

KyotoReference Year

FCCC

KyotoProtocolAdopted

KyotoProtocolEnter intoForce

Current

J. Gregg and G. Marland, 2008, personal communication

62%57%

49.7%

47%38%

43%50.3%

53%

•Annex B countries growing slowly•Non-Annex countries growing rapidly

Largely China and India•China largest emitter: passed USA in 2006•India to soon overtake Russia to become third

Incremental energy‐related CO2 emissions by country and region, 2006‐2030

WEO, 2008

City primary energy consumption in the Reference Scenario

Source: WEO, 2008

67%

73%

7903 Mtoe

12,374 Mtoe

% are cities’ share in global

81% cumulative increase in 2006‐2030 come from non‐OECD countries‐mostly from Asia

Energy‐related CO2 emissions in cities by region in the Reference Scenario

71% 76%

US cities :4.5 Gt, 23%EU cities :2.7 Gt, 14%China cities::4.8 Gt, 24%

19.8 Gt

30.8 Gt

WEO, 2008

89% of cumulative increase in 2006‐2030 comes from non‐OECD countries‐mostly from Asia

Urban’s contribution to energy related CO2 emissions of China

• Large volume: 4.8 Gt in 2006– More than whole of Europe (4.06 Gt)

• Global importance: 24% of global urban CO2 emission from energy use

• Local importance: 85% of total energy related CO2 emissions of China

• Dominated by key largest cities: 35 key cities account for 18% of China population but consume 40% energy and emit 41% of China’s energy related CO2 emissions

Source: Dhakal, 2008; WEO 2008

Xiamen

Urumqi

Nanjing

Guiyang

Chongquin

Fuzhou

Taiyuan

Xining

Ningbo

Shanghai

Hohhot

Xian

Guangzhou

Beijing

Yinchuan

China

0

40,000

80,000

120,000

160,000

200,000

240,000

280,000

0 3,000 6,000 9,000 12,000

Per Capita Gross Regional Product in US$

Per C

apita

Ene

rgy

Cons

umpt

ion

in M

J Pe

r Per

son

Varying energy‐economy pathways within China’s cities

Source: Dhakal (2008)

High energy pathway: Largely on middle and western China with energy intensive industries and climatically cooler

Low energy pathway: Cities in eastern part of the country with strong presence of service industries, close to coast and warmer climate

List of 35 most important cities that are mentioned in national plan: Beijing, Tianjin, Shijiazhuang, Taiyuan, Hohhot, Shenyang, Dalian, Changchun, Harbin, Shanghai, Nanjing, Hangzhou, Ningbo, Hefei, Fuzhou, Xiamen, Nanchang, Jinan, Qingdao, Zhengzhou, Wuhan, Changsha, Guangzhou, Shenzhen, Nanning, Haikou, Chongqing, Chengdu, Guiyang, Kunming, Xi'an, Lanzhou, Xining, Yinchuan, and Urumqi.

Per capita energy and CO2 of key Chinese cities are not necessarily smaller

Per capita final energy consumption, 2006 Per capita CO2 emissions, 2006

Based on permanent resident population, source: Dhakal(2008)

1.9

2.7

2.2

0.8

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Beijing Shanghai Tianjin Chongquin

Prim

ary

ener

gy d

eman

d, in

TO

E/pe

rson

9.0

12.6

10.9

3.7

0.0

2.0

4.0

6.0

8.0

10.0

12.0

14.0

Beijing Shanghai Tianjin ChongquinCO

2 em

issi

on fr

om e

nerg

y us

e, in

Ton

s/pe

rson

Year 2003Tokyo Metropolis: 5.9 tons CO2/person (pop12.06 mn) for 2003New York State: 10.9 tons CO2/person (pop 18.95 mn) for 2003New York City: 7.1 tons/CO2 (pop 8.1 mn) for 2006 (PLANYC)Greater London: 6.95 tons CO2/person (pop 7.3 mn) for 2003Bangkok City: 6 tons CO2/person (electricity and transport only, 2005)

Source: TMG , PLANYC, BMA

Therefore…….

• Asia is/will be leader in unprecedented global urbanization• Local impacts are/will be serious: urban environmental

impacts‐ air, water, waste• Global impacts are/will be tremendous: Asia’s (urban)

energy use and carbon trajectories are of serious concern globally

• It forces us to think new way to address the problem:– How to address telescopic compression of a range of urban

environmental problem in Asia which the West experienced in some kind of stages?

– Cities have started to act for global concerns– How to streamline energy and carbon mitigation concerns into

the urban development activities?

Strategic needs• Tackling “urban” in integrated and holistically in opposed to

fragmented pieces here are there

• Demand dampening‐ energy, material

• Better infrastructure supply‐ without rebound effects

• Providing incentives for actions that entail co‐benefits (to global and local concerns)

• Better institutional arrangements (within and across) with focuson “implementation” of policies

• Creating committed and accountable political champions

• Thank you

Needs for reasonable infrastructure supply

Students return home in an overloaded “tempo” (three‐wheeler) after taking the SLC examinations (Grade 10 of school) from Haripur exam center in Sarlahi on 9th April 2007 (Nepal)

Needs for demand management

Beijing © Shobhakar Dhakal

• Asian development is at cross‐roads

• How donor communities can help

National definitions of “urban” in UN Urban population statistics

Criterion CountriesAdminis trative 83E conomic 1P opulation s ize 57Urban characteris tic 4Any combination 48

E ntire population 6No urban population 3Unclear definition 1No definition 25Tota l 228

Source: Thomas Buettner, UN Population Division

Regional Emission Pathways (1980-2005)

C emissions

Population

C Intensity

Developed Countries (-)

Developing Countries Least Developed Countries

Wealth per capita

Raupach et al 2007, PNAS

World primary energy use

2006 (Mtoe)Total: 11,547

OECD : 5,536Non‐OECD : 6,011

China :1,898 India : 566

WEO, 2008

• OECD is not expected to increase dramatically

• Non‐OECD account for majority of increases

Energy‐related CO2 emissions result in human sustainability challenges

0

5

10

15

20

25

30

35

40

45

1980 1990 2000 2010 2020 2030

Gigaton

nes International

marine bunkersand aviation

Non‐OECD ‐ gas

Non‐OECD ‐ oil

Non‐OECD ‐ coal

OECD ‐ gas

OECD ‐ oil

OECD ‐ coal

Source: WEO 2008

2006 GigaTons CO2Total: 27.89

OECD : 12.79Non‐OECD : 14.12

China : 5.65 India : 1.25

The Reference Scenario: Per‐capita primary energy demand, 2030

In 2030, disparities in per‐capita energy consumption remain stark, ranging from 7 toe in Russia to 0.5 toe in sub‐Saharan Africa

WEO, 2008

World energy‐related CO2 emissionsin 2030 by scenario

OECD countries alone cannot put the world onto a 450‐ppm trajectory, even if they were to reduce their emissions to zero

World

World

0

5

10

15

20

25

30

35

40

Reference Scenario 550 Policy Scenario 450 Policy Scenario

Gigaton

nes

Regional distribution within world’s urban population

4.5%

32.0%

37.8%

9.6%

15.0%

1.1%

7.0%

37.9%

29.2%

13.0% 11.9%

1.0%

11.0%

49.3%

16.7%

13.8%

8.5%

0.7%

15.1%

53.7%

11.1%12.4%

7.1%

0.6%

0.0%

10.0%

20.0%

30.0%

40.0%

50.0%

60.0%

AFRICA ASIA EUROPE LATINAMERICAAND THE

CARIBBEAN

NORTHERNAMERICA

OCEANIA

Reg

iona

l sha

re o

f wor

ld u

rban

pop

ulat

ion

1950197520052030


Shift in the geographical distribution of urban population

Cities by size

Mega‐cities are few and collectively makes small shareUrban settlements with less than half‐million make over half of urban population

World

0

1000

2000

3000

4000

5000

6000

7000

8000

1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015

Popu

lation

(million)

Urban > 10MUrban 5M to 10MUrban 1M to 5MUrban 0.5M to 1MUrban < 0.5MRural

2030

364

455

No of agglomeration in 2005

% of urban population in 2005

9.3%6.5%

22.6%

10.1%

51.5%


The China case

• China contributes significantly– 16.8 % of global urban population (UN 2007)– 16% of global primary energy demand, and– 20% of global energy‐related CO2 (WEO 2008)

• China’s primary energy demand will increase further– By 2.2 times in 2005‐2030 to 3,819 Mtoe (WEO, 2007)

• Urbanization in China will increase further– 60% (880 million) by 2030 from 41 % (545 million) in 2005. MGI (2008)

projects is to one billion for 2030• 90% of GDP by 2025 from urban economy (MGI, 2008)• Urban energy use will increase further

– Per capita energy in cities are 1.8 times higher than national averages in 2006 (WEO, 2008)

– Such gap will narrow in the future but rapid urbanization will ultimately lead to increasing urban energy use

Urban primary energy use in China

2006 2030

Mtoe

City as a % of nation

al Mtoe

City as a % of nation

al

Coal 1 059 87% 2 206 90% Oil 271 77% 648 80% Natural gas 40 81% 158 84% Nuclear 12 84% 67 87% Hydro 31 84% 76 87% Biomass & waste 10 4% 37 16% Other renewables 2 45% 27 67% Total 1 424 75% 3 220 83% Electricity 161 80% 495 83%

Hydro2.2%

Nuclear0.8%

Natural gas2.8%

Oil19.0%

Coal74.3%

Biomass & w aste0.7%

Other renew ables

0.1%

Primary fuel share in urban energy use in 2006

Reference Scenario

WEO, 2008

For commercial energy, urban’s share is much higher i.e. 84%(Source: Dhakal (2008)

Enormous influence of China’s largest and most important 35 cities

List of 35 most important cities that are mentioned in national plan: Beijing, Tianjin, Shijiazhuang, Taiyuan, Hohhot, Shenyang, Dalian, Changchun, Harbin, Shanghai, Nanjing, Hangzhou, Ningbo, Hefei, Fuzhou, Xiamen, Nanchang, Jinan, Qingdao, Zhengzhou, Wuhan, Changsha, Guangzhou, Shenzhen, Nanning, Haikou, Chongqing, Chengdu, Guiyang, Kunming, Xi'an, Lanzhou, Xining, Yinchuan, and Urumqi.


Enormous influence of China’s largest and most important 35 cities


Four cities

Basic indicators of Beijing, Shanghai, Tianjin and Chongqing, 2006 City Beijing Shanghai Tianjin Chongqing Area, Sq Km 16,410 6,340 11,920 82,400 Resident population, million 15.81 18.15 10.75 2,808 Registered population, million 11.98 13.68 9.49 3,199 Urban share in resident population (%) 84% 89% 76% 47% Gross regional product, billion US$ 98.7 130.0 54.7 43.8 Total energy use, thousand TJ a 1,332 2,480 1,271 1,160 Total energy related CO2 emissions, million tons a

142.10 228.74 117.61 103.97

a Total energy means sum of TFC, distribution/transmission losses and conversion losses


Note the difference between resident and registered population

Per capita CO2 emissions

0

4

8

12

16

20

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

2006

Per c

apita

CO

2 em

issi

ons,

tons

/regi

ster

ed p

opul

atio

n Beijing

Chongqing

Shanghai

Tianjin

5 times of 1985

2.6 times of 1985

Based on permanent registered population Dhakal(2008)

• Rapidly rising energy use and CO2 emissions

•Diverging trends within cities

Common trends in CO2 contribution

• Sectoral CO2 transition – Decreasing share of industry sector (except Tianjin)

– Rising share of commercial and transports sectors

– Largely unchanged share of residential sector

• Fuel’s CO2 transition– Declining share of direct coal burning

– Rising share of electricity and oil

– Smaller role of natural gas then expected in Shanghai and Tianjin

Carbon intensity of economy and per capita trends

Beijing(1985-2006)

Shanghai(1985-2006)

Tianjin(1985-2006)

Chonqing(1997-2006)

-

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

0.00 5.00 10.00 15.00 20.00

CO2/capita, tons/person

CO2/

GRP

Kg/

Yuan

(197

8 co

nsta

nt

pric

e)

• Failed to perform well, in general (ideally should move towards origin over time)• Large gain in carbon intensity of economy but this has slowed or even worsened in recent years

• No way to reduce control per capita emission for now – but clearly great need to be dampened the growth and in carbon intensity terms

Final observations

• The speed and size of urbanization keeps urban CO2 and Asia in the center‐stage

• 67% of global energy is used in urban areas and urban areas are responsible for 71% of the energy related CO2 – this will increases to 73% and 76% respectively by 2030

• Asia, and in particular China and India is and will play bigger role in determining global urban energy and emissions in the future

Final observations‐ China• Already about 75% of total energy are used in urban areas (85%

of commercial energy) and such share will further increase to 83% despite narrowing urban to national per capita energy gaps

• China’s 35 largest cities have and will have enormous and disproportionate influence to energy and carbon. Big cities are economic powerhouses and important. However, there are different pathways within too.

• As seen from Beijing, Shanghai, Tianjin, and Chongqing analyses,a rapid energy transition taking place in cities‐ a low carbon path in evidently important to explore despite obvious difficulties

• In Chinese cities policy interventions in energy system has synergies with the CO2 reduction (Clean energy, economic structure change, energy efficiency, strengthening of public and mass transportation system)

• But that is not enough if current fuel structure persists and rapid technology deployment for coal such as CCS or IGCC is not used

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