Merging complex systems science and ecology, resilience scientists have broken new ground on understanding—and preserving—natural ecosystems. Now, as more and more people move into urban hubs, they are bringing this novel science to the city.
The world is going through a massive urbanization, overturning the traditional demographic order and challenging two millennia of literary and cultural concepts of the urban. In this last post, I want to return to the ecological impacts of that urbanization…and what conservationists can do to mitigate it.
The Hatoyama government’s ambitious carbon reduction goals position Japan for leadership in the postindustrial global economy. Less discussed is Tokyo’s remarkable energy efficiency, urban ecology innovations, and its potential for playing a leading role in the next decade’s biggest environmental challenge: creating sustainable cities with human and environmental benefits.
CityLAB, an urban design think tank at the University of California, Los Angeles, took on the challenge of design-inspired infrastructure earlier this year with the creation of WPA 2.0: Working Public Architecture. [3] Inspired by the Works Projects Administration of the 1930s — the largest and most effective of the agencies created by the Roosevelt administration — WPA 2.0 has so far included a global design competition, a multidisciplinary symposium and (coming in February) a web exhibition.
A finalist in the WPA 2.0 competition sponsored by UCLA Citylab, Nicholas de Monchaux and collaborators have provided a case study showing the impacts of the “spaces between places,” spaces owned by the city but unused and still maintained. Monchaux’s group, using geospatial analysis identify thousands of these publicly owned, abandoned spaces and quantify their transition into a network of urban greens.
It’s clear in retrospect that the fracture-critical structures of the 1950s and ’60s reflected the larger culture — this was when John Kenneth Galbraith famously critiqued the United States as a nation of private affluence and public squalor. In an era when America could have afforded the best infrastructure in the world, we began instead to channel wealth into private hands and to impoverish the public realm.
By requiring car drivers to pay a fee to drive in a city at peak hours, congestion pricing reduces traffic and raises money that can be used to support public transit—both worthy goals.
Yet congestion pricing has dubious environmental value. Traffic jams, if they’re managed well, can actually be good for the environment. They maintain a level of frustration that turns drivers into subway riders or pedestrians.
For half a century, a dark tunnel of crumbling concrete encased more than three miles of a placid stream bisecting this bustling city.
The waterway had been a centerpiece of Seoul since a king of the Choson Dynasty selected the new capital 600 years ago, enticed by the graceful meandering of the stream and its 23 tributaries. But in the industrial era after the Korean War, the stream, by then a rank open sewer, was entombed by pavement and forgotten beneath a lacework of elevated expressways as the city’s population swelled toward 10 million.
Today, after a $384 million recovery project, the stream, called Cheonggyecheon, is liberated from its dank sheath and burbles between reedy banks. Picnickers cool their bare feet in its filtered water, and carp swim in its tranquil pools.
It was in 2000 that the Chinese government formulated a plan to build 400 new cities by 2020, in order to install the migration coming from the countryside towards the new urban agglomerations. This is the equivalent of 20 cities per week.
The site, located on the Qi’Ao Island, 27 square kilometer island in the north of Zhuhai, has the potential to become a gateway for Hong Kong - Shenzhen due to its strategic location and the increasing passenger flows through it. The island is threatened to become another generic Chinese urbanization that spread across farmlands. Thus the signs of scarcity of water resources, deforestation, fish farming and industrial pollution are already present.
Jorge Ayala started first with a research of new materials for the city with regards to performance and functionality. The project generated a rich base of indexes which traduce environmental, topographical and geographical parameters into a material ready to be use for the design. The spatial strategy that Ecotransitional Urbanism uses is an implementation of the relationship between the built and its context.
400 years after Hudson found New York harbor, Eric Sanderson shares how he made a 3D map of Mannahatta’s fascinating pre-city ecology of hills, rivers, wildlife — accurate down to the block — when Times Square was a wetland and you couldn’t get delivery.