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Fotoforum Foto's van wolkenkrabbers, skylines en de gebouwde omgeving.


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Old October 21st, 2009, 09:31 AM   #1
wolkenbestormer
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Herfstkleuren

Foto's van afgelopen zondag. Wandeling door de bossen bij Doorn, heerlijk om doorheen te wandelen.

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Old October 21st, 2009, 11:13 AM   #2
Master Roshi
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Een mooie serie foto's, Wolkenbestormer! Een erg leuke afwisseling van een kleurrijk palet.
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Old October 21st, 2009, 01:06 PM   #3
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Da's een heel mooi bos! Best te bewandelen op een doordeweekse dag. Mooie foto's, alleen #13 snap ik niet
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Old October 21st, 2009, 02:02 PM   #4
Slagathor
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Leuke foto's!

Weet iemand trouwens waarom onze bossen nooit zo spectaculair verkleuren als die in New England?
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Middelburg, ZL | Vlissingen, ZL
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Old October 21st, 2009, 03:09 PM   #5
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Climate influences
Compared to western Europe, North America provides many more arbor species (more than 800 species, about 70 oaks compared to 51 and three in Western Europe)[15] which adds many more different colors to the spectacle. The main reason was the different effect of the ice ages—while in North America, species could evade to warmer regions along north–south ranging mountains, this was not feasible in Europe. [16]

According to a study in the journal Global Change Biology, climate change delays the autumn spectacle of multi-colored leaves but increases forest productivity. The study suggests that rising carbon dioxide levels in the atmosphere act directly to delay the usual autumn spectacle of changing colors and falling leaves in northern hardwood forests.[17] The researchers found that the forests in North America and Europe stayed greener longer as CO2 levels rose, independent of temperature changes. However, the experiments were too brief to indicate how mature forests may be impacted over time. Also, the research suggests that other factors, such as increasing ozone levels in the part of the atmosphere closest to the ground, can negate the beneficial effects of elevated carbon dioxide.[18]

http://en.wikipedia.org/wiki/Autumn_leaf_color

Heeft dus voornamelijk te maken met het feit dat er daar meer soorten eikenbomen staan. Vermont e.o. moet idd geweldig zijn in de maand oktober.
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Old October 21st, 2009, 03:16 PM   #6
Slagathor
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Als ik dat zo lees heeft het toch voornamelijk met het aantal verschillende soorten te maken? Tijd om hier in Nederland in de keukenhof of in het Vondelpark of weet-ik-veel-waar een flink spectrum aan Noordamerikaanse (eventueel genetisch gemanipuleerde) loofhoutbomen aan te planten. Waar wachten we nog op?
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