An Ecosystem Service Perspective on Urban Nature, Physical Activity, and Health

Nature supports human health in countless ways, including pollinating the crops we eat, filtering the water we drink, protecting communities from floods, and helping stabilize the climate. These benefits are well studied. But one of the most important and hardest questions researchers are now tackling is this: how does nature get people moving?

Physical activity is a cornerstone of both mental and physical health. And spending time in natural spaces (e.g., parks, greenways, community gardens) can encourage people to walk, bike, run, and play. But in dense cities where access to nature is limited and shrinking, it’s not always clear where to invest in green space to get the biggest health payoff.

This study lays out a plan for a new kind of tool — a spatial decision-support system — designed to show where, how, and for whom urban nature promotes physical activity. The goal is to give city planners, public health officials, and policymakers a clearer picture of which green spaces matter most for getting people active.

The researchers reviewed what’s already known, built a model framework, and spelled out the steps and data needed to create maps that could be used in any city. Right now, the available knowledge is enough to build an initial model that can identify broad trends which is useful for guiding urban planning, land-use policy, and public health decisions.

But the real potential lies ahead. With more research and real-world testing, these models will get sharper. They’ll reveal which types of nature matter most, which communities stand to benefit the most, and how green spaces can help create healthier, more equitable, and more livable cities for everyone.

Abstract

Nature underpins human well-being in critical ways, especially in health. Nature provides pollination of nutritious crops, purification of drinking water, protection from floods, and climate security, among other well-studied health benefits. A crucial, yet challenging, research frontier is clarifying how nature promotes physical activity for its many mental and physical health benefits, particularly in densely populated cities with scarce and dwindling access to nature. Here we frame this frontier by conceptually developing a spatial decision-support tool that shows where, how, and for whom urban nature promotes physical activity, to inform urban greening efforts and broader health assessments. We synthesize what is known, present a model framework, and detail the model steps and data needs that can yield generalizable spatial models and an effective tool for assessing the urban nature–physical activity relationship. Current knowledge supports an initial model that can distinguish broad trends and enrich urban planning, spatial policy, and public health decisions. New, iterative research and application will reveal the importance of different types of urban nature, the different subpopulations who will benefit from it, and nature’s potential contribution to creating more equitable, green, livable cities with active inhabitants.