Signs of Sustainability in China

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Highlights features of Chinese cities that create ecologically and economically sustainable urban environments, and discusses links between higher urban density, decreased carbon footprint and increased environmental sustainability.

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Signs of Sustainability in China

  1. 1. Signs ofSustainability in China Cayuga Sustainability Council George Frantz July 14, 2011
  2. 2. Comparative Density Suzhou Shanghai Seattle San Francisco Portland Philadelphia MedianNew York City Los Angeles Ithaca * Hangzhou Boston - 10,000 20,000 30,000 40,000 50,000 60,000
  3. 3. Comparative Density:2,000 ft./10 min. Walk Boston 5,750 Hangzhou 17.420 Ithaca 2,460 Los Angeles 3,650 New York City 12,480 2,000 ft Philadelphia 5,090 Portland 1,960 San Francisco 7,770 Seattle 3,270 Shanghai 24,750 Suzhou 9,530
  4. 4. Some Green Parameters • Pedestrian Neighborhoods; • Pedestrian Streets; • Transportation Systems; • Street Canopy; • Green Space.
  5. 5. Pedestrian Neighborhoods Traffic signal – a major infrastructure cost in cities throughout the USA.
  6. 6. Pedestrian Neighborhoods
  7. 7. Pedestrian Neighborhoods
  8. 8. Pedestrian Neighborhoods
  9. 9. Pedestrian Neighborhoods
  10. 10. Pedestrian StreetsShanghai
  11. 11. Pedestrian StreetsShanghai(Tian Zi Feng, Yu Yuan)
  12. 12. Pedestrian Streets Lanzhou
  13. 13. Pedestrian Streets Nanjing
  14. 14. Bike-Based Transportation
  15. 15. Bike-Based Transportation
  16. 16. Comparative Costs+/- $250US / Space +/- $2,500US / Space
  17. 17. Comparative Costs Parking vs Utilizable SpaceIthaca Farmers Market Minhang Ferry Market
  18. 18. Comparative Costs Minhang Ferry Market
  19. 19. The American Challenge Commuting by Automobile - %-age of Labor Force United StatesReality: Seattle San Francisco Americans are still Portland highly dependent Philadelphia on automobiles to Median get to and from New York City Los Angeles work. Tompkins County Ithaca * BostonSource: 2000 Census of Population & Housing 0% 20% 40% 60% 80% 100% * Data for Ithaca adjusted to remove influence of Cornell University students, who are also counted as part of local labor force.
  20. 20. The American Challenge • Min. density for viable Seattle Heavy Rail FeasibleSan Francisco Bus Transit Feasible bus-based public Portland transit: +/-7,000 Philadelphia persons/sq. mile; MedianNew York City • Min. density for heavy Los Angeles rail (subway): +/- Ithaca * 20,000 persons/sq. Boston mile. - 10,000 20,000 30,000
  21. 21. Early AmericanUrban Fabric25 x 125 ft lots typical;Net density = 9.5 D.U./acre, 6,080 D.U./sq. mi;At avg. of 2.2 persons/household, populationdensity would be +/-13,375 persons/sq. mi.
  22. 22. If Ithaca had developed like acolonial American city… Ithaca Urban Area 2010 (+/- 11.5 sq. mi.) A Compact, Sustainable Ithaca (+/- 2.6 sq. mi.)
  23. 23. Street Tree CanopyStreet tree canopy is critical to mitigating impacts of the semi-tropical climate in many Chinese cities & urban heat island effects of pavement and rooftops.
  24. 24. Street Tree Canopy
  25. 25. Street Tree CanopyStreet and highway design guidelines require dense vegetative buffers along new highways and expressways to screen them from adjacent landuses
  26. 26. Green SpaceHoutan Gardens, Shanghai: public park, waterfront access stormwater run-off control & treatment, wetland restoration, flood levee
  27. 27. Green SpaceWest Lake, Hangzhou Hwanghe (Yellow ) River, Lanzhou
  28. 28. Green SpaceChongming National Geopark, Xisha; West Lake National Park, Hangzhou
  29. 29. Green SpaceProtecting the agricultural landscape is now recognized as a critical priority in the Shanghai and other metropolitan regions in China.
  30. 30. Questions?George R. Frantz, AICP, ASLA 604 Cliff Street, Ithaca NY geoplan57@gmail.com

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