2009年-世界发展银行全球_The_Little_Green_Data_Book_2009_246页_2mb

The Little Green Data Book 2009 Summary

Core Content

The Little Green Data Book 2009 is a publication by the World Bank that provides key data on environmental and development indicators across different regions and income groups. It focuses on the relationship between urbanization, economic growth, and environmental impact, emphasizing the role of cities in shaping future sustainability and the importance of public policies in reducing emissions and improving infrastructure.

Main Viewpoints

Urbanization and Climate Change

• Urban population growth: One of every two people globally lives in urban areas, and this is expected to rise to 70% by 2050.
• Urban areas' impact: Cities are significant contributors to greenhouse gas emissions due to their concentration of economic activity and infrastructure.
• Vulnerability to climate change: Cities are especially vulnerable to climate change impacts, such as sea level rise, due to the concentration of people and resources.
• Policy importance: Effective public policies can reduce emissions and enhance resilience to climate change, as demonstrated by Germany and Sweden.

Energy Consumption and Emissions

• Energy use in cities: Urban areas consume approximately 72% of the world's energy, mainly from coal, oil, and natural gas.
• Energy efficiency: Public policies can improve energy efficiency and reduce carbon dioxide emissions.
• Renewable energy: Although cities use 70% of energy from renewable sources, these sources still represent a small portion of total energy use.
• Energy mix: The energy mix varies by region, with some areas relying more on fossil fuels and others on hydropower.

Environmental and Health Indicators

• Water and sanitation access: Access to improved water and sanitation is higher in urban areas than in rural ones, though disparities exist.
• Health impacts: Environmental pollution contributes to health issues such as acute respiratory infections and diarrhea, especially among children.
• Under-five mortality rate: This rate is generally lower in urban areas than in rural ones, indicating better access to healthcare and sanitation.

National Accounting Aggregates

• GNI per capita: Reflects the average income per person in different regions and income groups.
• Savings and expenditures: Includes gross savings, consumption of fixed capital, and education expenditure as a percentage of GNI.
• Depletion indicators: Measures the impact of resource use on economic sustainability, such as energy, mineral, and forest depletion.

Key Information

Regional Overview

• East Asia and Pacific:

  • Urban population: 50%
  • Urban population growth: 3.5%
  • GNI per capita: $www.baogaoba2x182$
  • CO2 emissions per capita: 4.5 metric tons
  • Access to improved water: 86%
  • Access to improved sanitation: 60%

• Europe and Central Asia:

  • Urban population: 43%
  • Urban population growth: 3.5%
  • GNI per capita: $www.baogaoba2x182$
  • CO2 emissions per capita: 3.6 metric tons
  • Access to improved water: 87%
  • Access to improved sanitation: 66%

• Latin America and the Caribbean:

  • Urban population: 78%
  • Urban population growth: 2.1%
  • GNI per capita: $www.baogaobao.com$
  • CO2 emissions per capita: 2.5 metric tons
  • Access to improved water: 91%
  • Access to improved sanitation: 78%

• South Asia:

  • Urban population: 64%
  • Urban population growth: 0.2%
  • GNI per capita: $www.baogaoba$
  • CO2 emissions per capita: 7.0 metric tons
  • Access to improved water: 95%
  • Access to improved sanitation: 89%

• Sub-Saharan Africa:

  • Urban population: 64%
  • Urban population growth: 0.1%
  • GNI per capita: $www.baogaoba$
  • CO2 emissions per capita: 23.0 metric tons
  • Access to improved water: 95%
  • Access to improved sanitation: 89%

Urban Form and Sustainability

• Compact cities: Tend to use less energy and are more sustainable than sprawling cities.
• Transportation: The choice of transport modes significantly affects energy use, with public and nonmotorized transport being more energy-efficient.
• Emissions: The United States and Western Europe have high per capita emissions, while Middle Eastern countries have high emissions due to fuel subsidies.

Data Notes

• The data in this book are based on the most recent year available.
• Regional aggregates include only low- and middle-income economies.
• Symbols used in the data:
  • 0 or 0.0 indicates zero or a small enough number to round to zero.
  • .. indicates data not available.
  • $ indicates current U.S. dollars.
• The book includes indicators used to monitor progress toward the Millennium Development Goals.

Conclusion

The Little Green Data Book 2009 underscores the critical role of urbanization in economic and environmental development. It highlights the need for sustainable urban planning and effective public policies to mitigate the environmental impact of growing cities and improve access to essential services like water and sanitation. The data emphasize the importance of understanding regional differences in energy use, emissions, and environmental health outcomes to guide future development strategies.