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Negative environmental impacts
       posed by landfills
Negative environmental impacts
1. Landfill site occupy countryside
    fragmentation of wildlife’ s habitats
    removal of vegetation

2. Water pollution
    leachate might flow into river nearby /
   infiltrate into soil through seepage
    toxic chemicals cause ecological disaster
3. Basic facilities (treatment for leachate and
   chemicals)
        pose threat to adjacent natural habitats
    dude appearance causes visual pollution
E.g.
  Three strategic landfills :
North East New Territories Landfill (NENT)
South East New Territories Landfill (SENT)
West New Territories Landfill         (WENT)
What is SSSI ?
  Site of Special Scientific Interest
 reference for gov. dept on scientific values
of relevant sites
 ensure due consideration given to
conservation when development proposed

           Landfill site near to SSSI
       Election of sites of active conservation
                             conducted in 2003

                         Pak Nai scored 3.4
                           and ranked fourth
                                    in term of
                         level of biodiversity
                         (cf 3.58 of Hoi Ha
                         3.66 of Sha Lo Tung
Case: extension of SENT in Tseung Kwan O
Proposed alternative:

acquire 5 hectares of Clearwater Bay Country Park
together with nearby reclaimed area

      additional 17 million cubic m in capacity,
      6 years operational period

Ecological threats:
 construction work may disturb local wildlife

-11 worth-preserving species recorded in
relevant site include mammals, birds, reptiles
and butterflies
 e.g.普 通 伏 蝠 (Pipistrellus abramus) 、褐翅鴉鵑
Common Coucal(Centropus sinensis) 、水 律 (Ptyas
mucosus)、柑橘鳳蝶 Swallowtail (Papilio-
xuthus)…etc
How we treat the natural
             resource ?
Value of natural wildlife and landscape for us:
 Instrumental value – species’ existence benefits other
  entity(e.g. human)
•      in HK:
    Sai Kung known as “backyard of HK”, valuable marine
  ecosystem and habitats
    provide recreational, aesthetic to citizens
• quite a few marshes and wetlands of important
  ecological value could be found in NWNT and NENT
  (e.g. Yuen Long , Ting Kok, Lai Chi Wo)
    provide great scientific value for
       scholars

 Intrinsic value – species has value for its own sake
• Surging waste as population rise
        urgent need for source reduction

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Negative environmental impacts posed by landfills

  • 1. Negative environmental impacts posed by landfills
  • 2. Negative environmental impacts 1. Landfill site occupy countryside  fragmentation of wildlife’ s habitats  removal of vegetation 2. Water pollution  leachate might flow into river nearby / infiltrate into soil through seepage  toxic chemicals cause ecological disaster
  • 3. 3. Basic facilities (treatment for leachate and chemicals) pose threat to adjacent natural habitats  dude appearance causes visual pollution E.g. Three strategic landfills : North East New Territories Landfill (NENT) South East New Territories Landfill (SENT) West New Territories Landfill (WENT)
  • 4. What is SSSI ? Site of Special Scientific Interest  reference for gov. dept on scientific values of relevant sites  ensure due consideration given to conservation when development proposed Landfill site near to SSSI Election of sites of active conservation conducted in 2003  Pak Nai scored 3.4 and ranked fourth in term of level of biodiversity (cf 3.58 of Hoi Ha 3.66 of Sha Lo Tung
  • 5. Case: extension of SENT in Tseung Kwan O Proposed alternative: acquire 5 hectares of Clearwater Bay Country Park together with nearby reclaimed area additional 17 million cubic m in capacity, 6 years operational period Ecological threats:  construction work may disturb local wildlife -11 worth-preserving species recorded in relevant site include mammals, birds, reptiles and butterflies e.g.普 通 伏 蝠 (Pipistrellus abramus) 、褐翅鴉鵑 Common Coucal(Centropus sinensis) 、水 律 (Ptyas mucosus)、柑橘鳳蝶 Swallowtail (Papilio- xuthus)…etc
  • 6. How we treat the natural resource ? Value of natural wildlife and landscape for us:  Instrumental value – species’ existence benefits other entity(e.g. human) • in HK: Sai Kung known as “backyard of HK”, valuable marine ecosystem and habitats  provide recreational, aesthetic to citizens • quite a few marshes and wetlands of important ecological value could be found in NWNT and NENT (e.g. Yuen Long , Ting Kok, Lai Chi Wo)  provide great scientific value for scholars  Intrinsic value – species has value for its own sake
  • 7. • Surging waste as population rise urgent need for source reduction