By Jennie Moore, Director Sustainable Development and Environment Stewardship
BCIT School of Construction and the Environment
Biodiversity refers to the vast array of species, both flora and fauna, that populate the Earth. Their interactions create the ecosystems upon which we depend, characterized by various biomes including: deserts, rainforests, grasslands, and coral reefs (Newman and Jennings 2008).
Healthy biodiversity needs intact nutrient cycles, no net loss of soils, and no accumulation of pollutants (in soil, air or water). Although approximately 12% of Earth’s wild places have been dedicated as natural reserves, global change processes, including climate change, mean that the systemic conditions needed for these places to thrive are being undermined. Biodiversity losses are being driven in part by urbanization processes that fragment natural habitats and nutrient cycles, deplete soils and aquifers, and increase pollution levels (Newman and Jennings 2008).
To achieve the “Ecocity: Level 1 Condition” requires that the geo-physical and socio-cultural features of a city are in harmony with its surrounding bioregion (www.ecocitystandards.org). This means that indigenous flora and fauna are allowed to flourish. Equally important, ecocities do not draw down the resources or increase pollution levels in areas outside the bioregion either. This could happen through trade imbalances and/or taking advantage of global common resources, such as the waste sink capacities of oceans and atmosphere. Therefore, ecocities are concerned both with preserving and enabling healthy biodiversity in their bioregion as well as in the world generally.
The ecocity vision includes tightly clustered development immediately adjacent to naturally preserved areas (Register 2006). This allows people to experience nature at their doorstep despite living in high-density urban environments. Ecocities also utilize clean and renewable energy and responsible resources and materials that do not contribute to the destruction of natural habitat in their extraction nor the accumulation of toxics in their manufacture, use and disposal. Finally, by ensuring healthy and accessible food, ecocities also help to protect soils while keeping citizens well nourished.
Newman, Peter and Isabella Jennings. 2008. Cities as Sustainable Ecosystems: Principles and Practices. Washington DC: Island Press.
Register, Richard. 2006. Ecocities: Redesigning Cities in Balance with Nature. Gabriola BC: New Society Publishers.
The British Colombia Institute of Technology School of Construction and the Environment is Lead Sponsor of the International Ecocity Framework and Standards Initiative.