Treepolis

Photos and ideas related to informal greenspace, cities and urban ecology (by Christoph Rupprecht)

非公式緑地、都市とアーバン・エコロジーに関する写真と考え

Informal greenspace paper in PLOS ONE

My new paper on #informalgreenspace is out in #plosone !

We found #Informalgreenspace (such as vacant lots, railway verges, canal banks etc.) makes up ~5% of urban land use in the center of Brisbane and Sapporo, and is to >80% at least partly accessible.

Such greenspaces are a fascinating socio-ecological hybrid of human influence and natural processes - and we are just starting to understand how they might contribute to recreation or #biodiversity ! On the one hand, many of them have a complex vegetation structure worth preserving - on the other hand, they could be the “next big thing” for urban farming and agriculture.

Please feel free to share/copy/download - the paper is CC-BY #openaccess :)

IGS typology figure

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Why it makes sense to bike without a helmet

citymaus:

yes, it is kinda necessary to keep repeating the anti-helmet stance, due to heavy societal pressure to wear helmets.

Sharing (or wrestling) road space from a never-ending stream of one-tonne metal vehicles can be very intimidating. Cars and trucks are constantly zipping around you and there is no metal cage around you to protect yourself. So a helmet provides a level of protection from this danger. It makes you feel safer.

But a broader look at the statistics show that cyclists’ fear of head trauma is irrational if we compare it to some other risks. Head injuries aren’t just dangerous when you’re biking—head injuries are dangerous when you’re doing pretty much anything else.

Let’s be clear. I am NOT trying to say that studies definitively show that cycling is safer than driving or walking. The studies that are out there give us mixed messages about the relative safety of the different modes of transport. What I am saying is that these statistics raise an interesting question: If we’re so concerned about head injuries, why don’t we wear helmets all the time? Why do places that have mandatory helmet laws for cyclists not have them for drivers or pedestrians? A 1996 Australian study suggests that a mandatory helmet law for motor vehicle occupants could save seventeen times more people from death and serious head injury than a similar law for cyclists.

…we insist that children wear bike helmets (in fact, in some places, it’s the law) despite data that shows kids are more likely to die of head injuries riding in a car than riding on a bike. 

read more: howiechong, 24.02.14.


Abandoned sintering plant, Czech Republic.

Abandoned sintering plant, Czech Republic.

(via tomboy-urbex)