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Klimaatdiscussie: opwarming aarde door mens of natuur

38.978 Posts
Pagina: «« 1 ... 964 965 966 967 968 ... 1949 »» | Laatste | Omlaag ↓
  1. forum rang 10 rationeel 6 juli 2020 13:02
    Located at the merging of the... Yangtze... and... Han rivers,... this... low-lying... city, the... capital ...of ...Hubei province..., has always been... prone to floods..., especially in ...the summer monsoon months.... The... street names... are often the ...only reminder... of the ...lakes and pools... that been ..filled.. in and built over, but in ...2016..., after a week of... torrential downpours..., they ...filled with water again...
  2. forum rang 10 rationeel 6 juli 2020 13:03
    As metro stations and roads flooded, ...14... people died and some urban communities were temporarily cut off from the rest of the city. The... economic cost... was estimated at... 2.3bn yuan (£263m)...
  3. forum rang 10 rationeel 6 juli 2020 13:04
    The authorities blamed... poor drainage... and said ...Wuhan’s low-lying... geography made it hard for storm water to be discharged into the Yangtze when water levels in the river were high. Many... locals ...blamed... the loss of the city’s lakes...
  4. forum rang 10 rationeel 6 juli 2020 13:06
    The 2016 floods were a... wakeup call... With the latest UN figures projecting Wuhan’s population will exceed ...10 million... by 2035..., the situation remains critical...
  5. forum rang 10 rationeel 6 juli 2020 13:09
    The year before the floods, Wuhan had been declared one of the country’s... first 16 “sponge cities” – ...areas piloting... ecologically... friendly... alternatives... to... traditional flood... defences and drainage... systems. The pace of that project has been... accelerated,... with a total of... 228... projects in the two ...pilot districts... of ...Qingshan... and ...Sixin... to... retrofit... public spaces, ...schools... and... residential... areas with... sponge features.... More than ...38.5 sq km ...of the city has been... retrofitted... so far, at a cost of... 11bn yuan...
  6. forum rang 10 rationeel 6 juli 2020 13:15
    A render of Xinyuexie Park, which is designed to preserve and improve how the city copes with storm water. Photograph: Obermeyer

    ...Nanganqu Park..., which lies in the east near a... large iron and steel company..., was a... dirty drainage ditch... in the ...1980s.... It became a... park... in the ...1990s... and was last year ...transformed... into a ...***“sponge site”***..., with ...permeable pavements..., rain gardens,... grass swales..., artificial ponds... and... wetlands. ...The idea is that these features... absorb excessive ...rainfall through ...soil infiltration... and ...retain it in ...underground tunnels... and ...storage tanks..., ...only discharging... it into the river ...once water levels there... are low enough...
  7. forum rang 10 rationeel 6 juli 2020 13:16
    “The air is always ...fresh here,”... says retired... electrical engineer... Liao Baozheng ...as he walks in the park. “In Wuhan’s... scorching summer,... it’s cooler ...here as the... lush vegetation... brings down the temperature by... two or three degrees.”...
  8. forum rang 10 rationeel 6 juli 2020 13:19
    Under the ...sponge city scheme..., Wuhan and the other participating areas must ensure that... 20%... of their... urban land... includes... sponge features... by... 2020,... with a target of being able to... retain ...70%... of storm water. For Wuhan that equates to just over... 170 sq km ...of a total... urban area... of 860 sq km,... and last year the sponge projects were rolled out to a... further nine districts...
  9. forum rang 10 rationeel 6 juli 2020 13:21
    The nationwide programme has been expanded to cover... 30 cities... By... 2030,... participants must ensure that... 80%... of their... urban... land... includes sponge features...
  10. forum rang 10 rationeel 6 juli 2020 13:22
    ...***Wen Mei Dubbelaar,***... director of water management at...*** Arcadis China,***... which is working as a... consultant... to... Wuhan’s water department on sponge city projects..., says the key is to ...“give space back... to the river … [instead of] fighting the water”...

  11. forum rang 10 rationeel 6 juli 2020 13:26
    Wuhan residents cross a flooded street on a row of tables in 2012. Photograph: AFP/Getty

    ...“Rain gardens, grass swales and low elevation green belt... are a... low-impact... way... of... creating more space ...to catch the rainfall,”... she says. “They’re particularly ...suitable ...for Wuhan because the city has a... relatively high level of groundwater... and it is almost... impossible ...to let the water... seep underground.”...
  12. forum rang 10 rationeel 6 juli 2020 13:30
    ...Retrofitting old residential communities... is a particular challenge because there is... little space... left for... construction... and... existing drainage systems... are often ...outdated and worn out.... Such projects can be ...eye-wateringly expensive.... Transforming the... 3.8 sq km... Nanganqu... site involved a total investment of... 1.26bn yuan,... through a... public-private... partnership where ...20% ...of the funds came from... city government ...and the rest from the... private sector... – in this case the...*** iron and steel company***... that... built... the affected residential areas for... workers... in the ...1970s and 80s...
  13. forum rang 10 rationeel 6 juli 2020 13:33
    ...Central government... subsidies... for the sponge cities projects are... only... set to last until... 2020..., so... scaling up ...the scheme to cover... 80% of the city by 2030... will be a ...“huge burden”... unless ...the local government... finds ways to... involve more private investors..., says... Dr Faith Chan,... assistant professor in ...geographical sciences... at the... University of Nottingham ...Ningbo China.... “One possible way is to... involve real estate developers, ...because such... sponge sites ...do help increase the value of the land.”...
  14. forum rang 10 rationeel 6 juli 2020 13:34
    Even if the sponge city projects are fully implemented, this... emerging... megacity ...faces severe challenges...
  15. forum rang 10 rationeel 6 juli 2020 13:36
    “There are no golden standards, but cities like... Tokyo... and... Singapore... could handle ...one-in-100-...year storms,” ...Chan says.... “In... China..., most... drainage systems... are [currently] designed to deal with at most a... one-in-10-year... storm. Once the sponge city projects are complete, ...Wuhan ...should be able to handle a... one-in-30-year storm.”...
  16. forum rang 10 rationeel 6 juli 2020 13:57
    Instorting dreigt voor Amsterdamse kades en bruggen

    Marc Kruyswijk

    www.parool.nl/amsterdam/instorting-dr...

    Hoe meer onderzoek er wordt gedaan naar de staat van de bruggen en kades in Amsterdam, hoe slechter die blijken te zijn. Sommige bruggen staan op het... punt te bezwijken...
  17. forum rang 10 rationeel 6 juli 2020 13:59
    Vooral bij bruggen op... houten palen... moeten vaak... kortetermijnmaatregelen ...worden getroffen, zegt wethouder... Sharon Dijksma. ...“Alles wat op hout staat is heel, ...héél slecht. ...We wisten al dat er ernstige...*** verwaarlozing***... was, maar de laatste onderzoeksresultaten vallen tegen.”

    De stad heeft vanaf vorig jaar een begin gemaakt met het in kaart brengen van ...829... bruggen. Daarvan zijn nog maar... 21... volledig onderzocht.... Tien... bruggen zijn dusdanig slecht dat er ...maatregelen zijn getroffen...
  18. forum rang 10 rationeel 6 juli 2020 14:00
    Periodieke inspectie

    De vernieuwingsoperatie zal enorme financiële consequenties hebben. Nu is nog niet duidelijk hoe groot: de stad staat nog aan het ...begin... van het onderzoek naar de conditie. Voor de investeringen is de komende jaren... 300 miljoen ...uitgetrokken, maar binnen de coalitie werd vorig jaar, op lange termijn, al rekening gehouden met het astronomische bedrag van... 2 miljard euro...
  19. forum rang 10 rationeel 6 juli 2020 14:02
    Bij ...43... bruggen waarvan de funderingen zijn onderzocht, bleken die van ...16... aangetast. Eind dit jaar wordt naar verwachting van ongeveer... 140... bruggen op houten palen de... veiligheids­status ...van de fundering bekend. Volgens Dijksma is het aandeel slechte bruggen... nog groter dan gedacht....???(R)
  20. forum rang 10 rationeel 6 juli 2020 14:04
    De... urgentie... is enorm, zegt ze. “We moeten ...scherp... zijn. Eventueel ...bezwijken ...van een brug kondigt zich aan, wat we met... monitoring ...en... periodieke inspectie...???(R)... vroegtijdig ...???(R)kunnen signaleren. Dit wordt daarom nadrukkelijk... ingezet... als maatregel ...om de situatie te bewaken.”...
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Forum # Topics # Posts
Aalberts 465 6.840
AB InBev 2 5.282
Abionyx Pharma 2 29
Ablynx 43 13.356
ABN AMRO 1.579 46.083
ABO-Group 1 18
Acacia Pharma 9 24.692
Accell Group 151 4.129
Accentis 2 253
Accsys Technologies 22 8.870
ACCSYS TECHNOLOGIES PLC 218 11.686
Ackermans & van Haaren 1 160
ADMA Biologics 1 31
Adomos 1 126
AdUX 2 457
Adyen 13 16.146
Aedifica 2 828
Aegon 3.257 320.010
AFC Ajax 537 7.010
Affimed NV 2 5.735
ageas 5.843 109.775
Agfa-Gevaert 13 1.854
Ahold 3.536 73.977
Air France - KLM 1.024 34.302
Airspray 511 1.258
Akka Technologies 1 18
AkzoNobel 466 12.682
Alfen 12 16.000
Allfunds Group 3 1.122
Almunda Professionals (vh Novisource) 651 4.246
Alpha Pro Tech 1 17
Alphabet Inc. 1 324
Altice 106 51.196
Alumexx ((Voorheen Phelix (voorheen Inverko)) 8.484 114.756
AM 228 684
Amarin Corporation 1 133
Amerikaanse aandelen 3.819 240.155
AMG 965 125.587
AMS 3 73
Amsterdam Commodities 303 6.512
AMT Holding 199 7.047
Anavex Life Sciences Corp 2 381
Antonov 22.632 153.605
Aperam 91 14.103
Apollo Alternative Assets 1 17
Apple 5 313
Arcadis 251 8.613
Arcelor Mittal 2.023 318.575
Archos 1 1
Arcona Property Fund 1 266
arGEN-X 15 9.092
Aroundtown SA 1 175
Arrowhead Research 5 9.248
Ascencio 1 20
ASIT biotech 2 697
ASMI 4.107 37.532
ASML 1.762 76.467
ASR Nederland 18 4.117
ATAI Life Sciences 1 7
Atenor Group 1 322
Athlon Group 121 176
Atrium European Real Estate 2 199
Auplata 1 55
Avantium 29 10.626
Axsome Therapeutics 1 177
Azelis Group 1 49
Azerion 7 2.657

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