It is one thing to design buildings that can minimize impact on the environment. But what about creating structures that can play a regenerative role, contributing positively and directly to surrounded ecosystems? CityLab explores this intriguing and recent concept:
The idea is not to be satisfied with efficiency for its own sake. Regenerative design aspires to an active participation in ecosystems all around. A green roof is pleasant for humans and reduces energy consumption in the building underneath; a regenerative green roof not only does that but is intentionally designed to support butterflies or birds that have otherwise vacated an urban area.
Capturing rainwater, recycling graywater, and treating wastewater on-site are all great for reducing overall water consumption. But in regenerative design, these strategies are only optimal if they recharge the local aquifer as well.
Similarly, building materials shouldn’t only be viewed in the context of minimizing damage and the consumption of resources; they should be put to work for the planet. The use of wood thus becomes at its core a carbon sequestration strategy. The carbon soaked up by older trees—harvested in sustainable forestry practices, cutting them down before they fall and rot and release emissions back into the atmosphere—gets taken out of the cycle, permanently tucked away as beams and pillars and walls.
Given the novelty of the idea, there are no working models just yet. The article highlights the closest example of a regenerative system: the VanDusen Botanical Garden Visitor Centre in Vancouver (pictured).
Waste from the toilets is harvested to be mixed with food waste composting, while the water is separated out and purified for use in irrigation. Rammed-earth building blocks were formed by dredging ponds on the site, and the deeper water in turn led to a healthier ecosystem. The equivalent of staircases encourage all kinds of critters to get up to the green roof and feed; coyotes have been spotted up there.
Given the twin trends of rapid urbanization and equally rapid environmental degradation, this is definitely idea well worth exploring and investing in further. What are your thoughts?