Rationale

Natural environments are increasingly seen as public health resources.1 Provision of ‘green’ spaces in the living environment in particular has been associated with positive health outcomes including reduced mortality,2 morbidity,3 improved general health,4 and mental health.5 Despite this, provision of urban green infrastructure is often seen as insufficient for improving health and reducing health inequality, with suggestions that supporting recreational contact is necessary.6 Indeed, visiting green spaces for recreation has been associated with reduced stress,7 increased energy expenditure,8 improved psychological wellbeing9 and reduced mortality.10

The recreational use of greenspace is now recognised by the UK government as a key public health indicator,11 and recognition of the importance of the connection between green spaces and health is central to DEFRA’s 25-year plan.12 Internationally, green spaces are recognised by the World Health Organisations as settings which have the potential for equitable health improvement across a wide spectrum of populations.13,14 The economic value of green spaces to human health at a national level have been assessed in a number of ways,15,16 and business applications of this are beginning to be realised through large-scale grants to develop decision support tools for urban planners, for instance.17

With the onset of COVID-19 in the UK, the importance of recreational park use was brought into sharp focus as one of very few recreational opportunities that was permissible during the initial lockdown period.18 Internationally, anecdotal research has pointed to increased recreational use of greenspace during lockdown periods.1921 On the one hand, this potentially presents opportunities for maintaining good health in otherwise isolated times.22 On the other hand, a lack of alternative recreational opportunities could mean that parks become busier hotspots for recreation and therefore present risks to the transmission of COVID-1923. This could be especially true given clement climatic conditions.20,2426 It is plausible that any increases in park visits may be sustained even in the face of relaxed restrictions as they are viewed as safer spaces; efforts to monitor this possibility nationally throughout the course of the pandemic are ongoing.27

In response to this, we have developed an app drawing on entirely open data which attempts to forecast park use at the upper-tier local authority level in England. Specifically, we combine weather data from the Met Office COVID-19 response, access to greenspace data from Ordnance Survey and the Office for National Statistics, historical greenspace visits data from Natural England’s Monitor of Engagement with the Natural Environment survey,28 to experimentally predict the continually-updated parks mobility data released by Google in response to the pandemic. Uniquely, we use weather forecasts alongside historical weather and social science data to predict how busy parks in a certain local authorities may be in the coming days, providing proof-of-principle for a future app using non-Google data that could aid decision-making. Broadly, this interdisciplinary investigation falls under NERC’s medical and health interface, and aligns with their increasingly interdisciplinary and collaborative remit as it incorporates both social science and atmospheric science data sources, and is a partnership between three academic institutions as well as Natural England, an executive non-departmental public body.

1. Hartig, T., Mitchell, R., Vries, S. de & Frumkin, H. Nature and health. Annual Review of Public Health 35, 207–228 (2014).

2. Rojas-Rueda, D., Nieuwenhuijsen, M. J., Gascon, M., Perez-Leon, D. & Mudu, P. Green spaces and mortality: A systematic review and meta-analysis of cohort studies. The Lancet Planetary Health 3, e469–e477 (2019).

3. Maas, J., Verheij, R. A., Vries, de S., Spreeuwenberg, P., Schellevis, F. G. & Groenewegen, P. P. Morbidity is related to a green living environment. Journal of Epidemiology & Community Health 63, 967–973 (2009).

4. Klompmaker, J. O., Janssen, N. A. H., Bloemsma, L. D., Gehring, U., Wijga, A. H., Brink, C. van den, Lebret, E., Brunekreef, B. & Hoek, G. Residential surrounding green, air pollution, traffic noise and self-perceived general health. Environmental Research 108751 (2019). doi:10.1016/j.envres.2019.108751

5. Gascon, M., Triguero-Mas, M., Martínez, D., Dadvand, P., Forns, J., Plasència, A. & Nieuwenhuijsen, M. Mental health benefits of long-term exposure to residential green and blue spaces: A systematic review. International Journal of Environmental Research and Public Health 12, 4354–4379 (2015).

6. Hunter, R. F., Cleland, C., Cleary, A., Droomers, M., Wheeler, B. W., Sinnett, D., Nieuwenhuijsen, M. J. & Braubach, M. Environmental, health, wellbeing, social and equity effects of urban green space interventions: A meta-narrative evidence synthesis. Environment International 130, 104923 (2019).

7. White, M. P., Pahl, S., Ashbullby, K., Herbert, S. & Depledge, M. H. Feelings of restoration from recent nature visits. Journal of Environmental Psychology 35, 40–51 (2013).

8. Elliott, L. R., White, M. P., Taylor, A. H. & Herbert, S. Energy expenditure on recreational visits to different natural environments. Social Science & Medicine 139, 53–60 (2015).

9. White, M. P., Pahl, S., Wheeler, B. W., Depledge, M. H. & Fleming, L. E. Natural environments and subjective wellbeing: Different types of exposure are associated with different aspects of wellbeing. Health & Place 45, 77–84 (2017).

10. Sulander, T., Karvinen, E. & Holopainen, M. Urban green space visits and mortality among older adults: Epidemiology 27, e34–e35 (2016).

11. Health, D. of. Improving outcomes and supporting transparency part 2: Summary technical specifications of public health indicators. 147 (2016). at <https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/545605/PHOF_Part_2.pdf>

12. Department for Environment, F. &. R. A. A green future: Our 25 year plan to improve the environment. (Crown Copyright, 2018).

13. Organization, W. H. Urban green spaces and health: A review of evidence. (2016). at <http://www.euro.who.int/__data/assets/pdf_file/0005/321971/Urban-green-spaces-and-health-review-evidence.pdf?ua=1>

14. Organization, W. H. Urban green space interventions and health: A review of impacts and effectiveness. (World Health Organization Regional Office for Europe, 2017). at <http://www.euro.who.int/en/health-topics/environment-and-health/urban-health/publications/2017/urban-green-space-interventions-and-health-a-review-of-impacts-and-effectiveness.-full-report-2017>

15. Day, B. & Smith, G. Outdoor recreation valuation orval user guide. 27 (Department for Environment, Food; Rural Affairs, 2016). at <http://leep.exeter.ac.uk/orval>

16. White, M. P., Elliott, L. R., Taylor, T., Wheeler, B. W., Spencer, A., Bone, A., Depledge, M. H. & Fleming, L. E. Recreational physical activity in natural environments and implications for health: A population based cross-sectional study in england. Preventive Medicine 91, 383–388 (2016).

17. Greenkeeper. GREENKEEPER at <http://www.greenkeeperuk.co.uk/>

18. Department for Environment, F. &. R. A. Coronavirus (covid-19): Advice on accessing green spaces safely. GOV.UK (2020). at <https://www.gov.uk/guidance/coronavirus-covid-19-advice-on-accessing-green-spaces-safely>

19. Ahmadpoor, N. & Shahab, S. Realising the value of greenspace: A planners’ perspective on the covid-19 pandemic. Town Planning Review

20. Rice, W. L. & Pan, B. Understanding drivers of change in park visitation during the covid-19 pandemic: A spatial application of big data. (2020). doi:10.31235/osf.io/97qa4

21. Venter, Z., Barton, D., Figari, H. & Nowell, M. Urban nature in a time of crisis: Recreational use of green space increases during the covid-19 outbreak in oslo, norway. (2020). doi:10.31235/osf.io/kbdum

22. Slater, S. J., Christiana, R. W. & Gustat, J. Recommendations for keeping parks and green space accessible for mental and physical health during covid-19 and other pandemics. Preventing chronic disease: public health research, practice, and policy 17, (2020).

23. You, H., Wu, X. & Guo, X. Distribution of covid-19 morbidity rate in association with social and economic factors in wuhan, china: Implications for urban development. International Journal of Environmental Research and Public Health 17, 3417 (2020).

24. Elliott, L. R., White, M. P., Sarran, C., Grellier, J., Garrett, J. K., Scoccimarro, E., Smalley, A. J. & Fleming, L. E. The effects of meteorological conditions and daylight on nature-based recreational physical activity in england. Urban Forestry & Urban Greening 42, 39–50 (2019).

25. MacKerron, G. & Mourato, S. Happiness is greater in natural environments. Global Environmental Change 23, 992–1000 (2013).

26. Wolff, D. & Fitzhugh, E. C. The relationships between weather-related factors and daily outdoor physical activity counts on an urban greenway. International Journal of Environmental Research and Public Health 8, 579–589 (2011).

27. England, N. Overview of the people and nature survey. GOV.UK (2020). at <https://www.gov.uk/government/collections/people-and-nature-survey-for-england>

28. England, N. Monitor of engagement with the natural environment. The national survey on people and the natural environment. Technical report to the 2009 - 2019 surveys. (2019). at <https://www.gov.uk/government/statistics/monitor-of-engagement-with-the-natural-environment-headline-report-and-technical-reports-2018-to-2019>