Greening the Urban Environment: Trends and Opportunities

Transcription

1 Greening the Urban Environment: Trends and Opportunities HKQAA Symposium 2018 Grand Ballroom, Sheraton Hong Kong Hotel 17 May 2018 C Y Jim University of Hong Kong hragjcy@hku.hk geog.hku.hk/staf_ft_jim.html C.Y. Jim 1

2 Introduction Universal quest for green cities Urban environmental quality for people and nature Quality of life and liveability expectations More than the garden city Spatial ecological approach Key issues Quantity and quality of urban green infrastructure Distribution and connectivity pattern of green spaces Accessibility and distance to green spaces Coverage of greenery Biomass structure of greenery Multiple ecosystem services (Nature-based solutions) Social, economic and health benefits Climate-change adaptation 2

3 Maximize ecological functions (ecosystem services) Berlin s Biotope Area Factor (BAF) Nature-based solutions for sustainable and liveable cities elt/landschaftsplanung/bff/index_en.shtml 3

4 BAF: Principles and computation 4

5 Provide high and complex vegetation cover Singapore Singapore 5 Acapulco

6 Maximize green plot ratio Tokyo 6

7 Offer people-friendly green spaces Tokyo Singapore 7

8 Cover park surface predominantly with greenery Leuven CY Jim: Greening Brussels the Urban Environment: Trends and Opportunities 8

9 Increase green cover of built-up areas 9

10 Install urban lawns Paris Seoul 10

11 Adopt naturalistic park design Tokyo Singapore Tokyo 11

12 Insert greenway or linear park Tokyo Vancouver Leuven 12 Kagoshima

13 Design blueway-cumgreenway Dublin 13

14 Maximize street greening in compact city areas Tokyo 14

15 Install roadside soil corridor Chicago 15 Berlin

16 Widen pavement for trees Singapore Lanzho 16

17 Plant multiple tree rows Bruges Rome San Francisco 17 Taipei

18 Green pedestrianized shopping streets Frankfurt Barcelona 18

19 Insert trees at roadside parking spaces Saint Gallen Brussels Zurich 19

20 Barcelon a Convert tramways into turf strips Dublin Vienna Zurich 20

21 Green spaces below flyovers Singapore 21

22 x Aim at ground-level greening 22

23 Introduce temporary greening of vacant lots Singapore 23

24 Create world class highway greening Singapore 24 Green tunnel effect

25 Protect greenery in urban development Nice Kuala Lumpur 25

26 Respect existing nature Preservation of existing urban woodland, Sapporo 26

27 Create large urban forest park Yoyogi Park, Tokyo 27

28 Create mini-woodland patches Paris Osaka Singapore Bruges 28

29 Conserve heritage & champion trees Osaka Vertimiglia 29

30 Enhance nature-in-city functions 30

31 Create natural pockets in green spaces Urban biodiversity enhancement London 31

32 Preserve food and primary production Allotment garden & urban agriculture 32

33 Foster social functions & interactions 33

34 Facilitate citizen participation in UGS planning 34

35 Plan for green and blue infrastructure network Greenways & blueways Philaphelphia 35

36 Allow green fingers to penetrate the city Moscow Xiamen Hong Kong 36

37 Green roof: Urban renaissance Environmentally friendly and holistic urban design CY 37 Jim:

38 Green roof: University building Nanyang Technical University, Singapore CY 38 Jim:

39 Green roof: Residential building Waldspirale, Darmstadt Returning nature to city 39

40 Sky woodland & green wall: Electricity substation Tseung Kwan O, Hong Kong CY 40 Jim:

41 Mitigate urban heat island effect Paris 41

42 Install cool islands (green spaces) Thermal behaviour of green and built-up areas Climate change adaptation and proofing of cities 42

43 Conclusion Nurture a culture of meritorious urban greening Innovative solution to constraints of compact city greening Create opportunities in new urban and urban renewal areas Institute enabling planning and development policies Rectify bias towards development at the expense of nature Integrate greenery into sustainable and liveable cities Treat greening as an indispensable UGI 43

44 End of presentation Questions and comments are welcome 44