资源环境科技发展态势分析平台

Cities have long been about carving out a place for humans apart from nature. But that model has begun to change. Urban planners are increasingly realizing that to fend off a growing list of environmental threats, they need to harness what is known as ecosystem-based approaches.

These strategies run the gamut from tree planting to the creation of urban gardens. On 23 February, sub-national leaders will explore ecosystem-based approaches at the United Nations Environment Assembly (UNEA) Cities and Regions Summit.

Hosted by the UN Environment Programme (UNEP), the summit will showcase how nature can help cities reduce greenhouse gas emissions, stave off extreme heat, protect wildlife and filter pollution, all while creating jobs and economic opportunities. For example, UNEP data finds that simply planting trees on city streets would give 77 million people a 1°C reprieve on hot days.

Ahead of the Cities and Regions Summit, here are five municipalities that are embracing ecosystem-based approaches.