A health impact assessment of progress towards urban nature targets in the 96 C40 cities.

ABSTRACT:

Background

Urban greenspaces (eg, parks and trees) and blue spaces (eg, rivers and coasts) improve climate regulation and human health. In 2021, the mayors of 31 cities in the C40 Climate Leadership Group set 2030 targets for the percentage of urban greenspace and population with nearby natural (green or blue) space. We quantified annual all-cause mortality reductions from progress towards these targets for C40's 96 member cities.

Methods

We conducted a quantitative health impact assessment, testing three illustrative scenarios to increase urban greenspace: uniformly across space, in areas with the least nature, and in the most populated areas. We converted one percentage point progress towards each target in terms of the Normalized Difference Vegetation Index (NDVI) using p

SUBMITTER: Martin GK 

PROVIDER: S-EPMC12012849 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature