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Building Back Differently: The Role of CLM in Public Health Promotion through Nature-based Solutions

“The future of humanity is undoubtedly urban,” warns the UN-Habitat in their World Cities Report (2022), urging public health policies to address the growing health risks associated with urban expansion. Urban environments — characterized by traffic, pollution, noise, and overcrowding — not only create fertile ground for physical health issues but also place a significant burden on the mental health of their citizens (Olszewska-Guizzo et al., 2023). Neuropsychiatric diseases now account for 19.5% of all disability-adjusted life years  (DALYs), while depression is responsible for 6.2% of DALYs (World Health Organization, n.d.). These mental health challenges deteriorate citizens’ quality of life and generate serious economic losses for the state.

Figure 1: Population living in urbanized areas in 1990, 2014, and 2050 by continent and worldwide, UN, 2018 (https://www.esa.un.org/ unpd/wup)

Governments are increasingly recognizing the urgent need for interdisciplinary, evidence-based solutions to address this mental health crisis (Gruebner et al., 2017). A growing body of research highlights the restorative effects that contact with nature has on human health (Olszewska-Guizzo, Sia, & Escoffier, 2023). These effects include reducing stress and fatigue, triggering positive emotions, and improving cognitive functions such as concentration, memory, and creative performance (WHO, 2021).

Nature-based Solutions (NBS) are emerging as effective and cost-efficient strategies for addressing the growing mental health challenges in urban environments. The IUCN defines NBSs as actions to protect, sustainably manage, and restore natural or human-modified ecosystems, offering benefits for both environmental preservation and human well-being. Adopting NBSs to confront human health challenges arising from unhealthy environments aligns with the One Health approach (WHO) — which recognizes the interdependence of animal, ecosystem, and human health — and the UN 2030 Agenda for Sustainable Development. NBSs have been well-documented to support people’s emotional, mental, and physical health by adopting a holistic approach to prevention, promotion, rehabilitation, and therapy.

Figure 2: "Envisaging the Future of Cities," World Cities Report 2022 (https://unhabitat.org/sites/default/files/2022/06/wcr_2022.pdf)

Not Just Green

Often there is limited space available in cities for green areas, so it is important to optimize the design and use of the available green spaces (Olszewska-Guizzo, Sia, Fogel, et al., 2022). Urban planners, landscape architects, and conservation experts need to understand which types and characteristics of urban green spaces (UGS) most effectively benefit citizens’ mental health. This challenge inspired the development of the Contemplative Landscape Model (CLM) in 2016. The CLM measures how different landscape scenes can positively influence mental health through passive exposure. It focuses on landscape components that, when combined, trigger low-frequency brain activity associated with decreased cognitive strain, increased relaxation, and positive affect, as well as positive effects on mood and anxiety disorders(Olszewska-Guizzo, Sia, Escoffier, 2023).

The CLM evaluates landscape scenes based on seven key-components, each of which is rated using a 1–6-point scale. The final CLM score, the average of the seven key-components, provides a comprehensive assessment of a landscape's potential to offer beneficial mental health outcomes. The CLM is increasingly being used by practitioners to bridge the gap between landscape design and evidence-based impacts on mental health. It is also helping policy-makers make informed decisions on how to effectively curate UGSs to improve the mental health of their communities.

Figure 3: Seven key-components of Contemplative Landscape Model (CLM).

The main advantages of using the CLM include:

  • Accessibility and Ease of Use: The tool can be easily learned following formal training and applied by urban design practitioners, landscape architects, and those with a keen eye for landscapes.
  • Accuracy: The final CLM score is an average from the seven key landscape components in a single view or at multiple sites across the area, which helps to eliminate human error.
  • Cost-effectiveness: The CLM requires minimal equipment. Evaluations can be conducted in a single site visit using tablets or just pen and paper.
  • Efficiency: CLM also works with digital representations of landscapes (photos or videos) to save time, making it ideal for practitioners needing to assess multiple sites.
  • Versatility: The CLM can be applied to a wide range of sites, including urban, suburban and rural spaces, making it a useful tool for diverse environments, and scales.
  • Dual-purpose: The CLM can be used as an evaluation/ audit tool for green spaces, but also as a set of design guidelines to develop new creative mentally-healthy environments.
Figure 4: CLM evaluations can be conducted using tablets.

Global Examples: Singapore

The CLM has received increasing attention among professionals and researchers worldwide and is slowly finding its place in nature-based health promotion policies. The first country to adopt the CLM in its urban greening initiatives was Singapore. The National Parks Board (NParks) recognized the value of the evidence-based approach early, as part of their City in Nature initiative, which aims to ensure that the available green spaces are designed optimally to maximize the well-being of citizens across a diverse demographic, from the elderly and hospital patients to children with special needs.

The research conducted in Singapore, in collaboration with NParks and the National University of Singapore, found that therapeutic gardens with contemplative features contribute positively to a person's mental health and overall well-being. They also concluded that there were positive neuro-psychophysiological benefits from passive exposure to a therapeutic garden for the mental health of individuals with clinically concerning depressive disorders (Olszewska-Guizzo et al., 2022; Olszewska-Guizzo, Sia, Fogel, Escoffier, & Dan, 2022).

Figure 5: Neuroscience research studies conducted in Singapore between 2018 and 2021

 

Singapore established the network of 13 therapeutic gardens scattered across the city-state, with plans for an additional 7 to be completed by 2030. Each garden is designed according to the contemplative landscape guidelines to encourage visitors to enjoy everyday contact with the salutogenic nature of the premises.

NParks’ efforts go beyond transforming parks and are slowly moving into the wider urban environment.  There is a growing number of public officers and professionals trained in use of CLM for landscape assessment and design (an example of a recent workshop). Their continued research into Nature-based Solutions integrating CLM aligns with Singapore’s healthcare transformation plan, Healthier SG, to promote preventive health strategies for the whole population. Singapore’s efforts are setting a powerful and inspiring example of how states can benefit from embracing Nature-based Solutions to create healthier communities while prioritizing evidence-based design of their available green spaces.

Global Examples: Sweden

Sweden is the second country to incorporate the Contemplative Landscape Model (CLM) into its national health policy as part of its Nature-based Rehabilitation (NBR) program.  Alos known as the Skåne-model, or Naturunderstödd Rehabilitering (NUR), it launched in 2013, and is the first of its kind in the Nordic region. NUR is currently active in the southern region of Skåne County, with plans to expand throughout the rest of the country.

The program is founded on extensive research from the Alnarp Rehabilitation Garden, run by the Swedish University of Agricultural Sciences (SLU) (Grahn & Pálsdóttir, 2021). It emphasizes the role of nature in aiding patients to recover from stress-related mental illnesses, specifically exhaustion syndrome, mild to moderate depression, and anxiety (Grahn, Pálsdóttir, Ottosson, & Jonsdottir, 2017). The program takes eight weeks and is run at selected rural properties across Skåne Region (Wissler & Pálsdóttir, 2024).

Figure 6. One of the NBR providers' rural property.

The NBR program supports the rural development goals by employing trained coordinators to deliver the nature-based interventions and services of the program on their premises. These interventions are designed with the following core objectives in mind:

1) Rehabilitation Focus: Aims to support the standard of care to improve physical, mental, and social health through nature-supported activities.

2) Nature-Infused “Awake Rest:” Focuses on relaxation and recovery in a peaceful, undemanding natural environment that promotes mental rejuvenation.

3) Integration of Meaningful Activities: Encourages daily tasks in natural settings, offering participants purposeful engagements that align with the day-to-day operations of the NBR provider.

NBR requires from providers to maintain the quality standards set by the program. These include both the day activities to be offered to the patients and the quality and design of the property's natural environment. The CLM has been introduced to the program as a tool of evaluation for the property's landscape and to provide a systematic approach to develop quality standards comparable between the properties.

Figure 7: CLM on-site evaluations of NBR providers.

In the summer of 2024, six of the eight current NBR providers’ properties in the Skåne region were evaluated by independent experts using the Contemplative Landscape Model (CLM). This was the first time the CLM was conducted on rural properties. Previously, the CLM was used almost exclusively on urban environments. For this evaluation, an average of 12 to 23 landscape views per rural property was scored based on site maps, and the average score was computed for each location. This evaluation was carried out in preparation for the fourth procurement phase of the NUR program. The satisfactory performance of the CLM in this new context demonstrates its versatility and reliability, further supporting Sweden's ongoing commitment to integrating Nature-Based Solutions into public health policy. Sweden is the first country in Europe to adopt the Contemplative Landscape Model (CLM) as part of its national health policy.  The adoption reflects their commitment to innovative approaches, including evidence-based initiatives such as the Alnarp Rehabilitation Garden and therapeutic gardens for dementia patients(Pálsdóttir, Wissler, & Thorpert, 2024; Pálsdóttir, O'Brien, Poulsen, & Dolling, 2021), and highlights the country's leadership in promoting preventive health strategies through nature. Sweden's efforts are setting a model example for other European nations to follow in creating healthier, more resilient communities.

Final Thoughts

The path to sustainable (positive) urban futures requires “collaborative, well-coordinated and effective multilateral interventions” by cities and sub-national governments. The health and well-being of citizens are classified as a top priority by the WHO to build resilient cities.  Cities must understand that it is no longer enough to “[build] back better” to meet the 2030 Agenda for Sustainable Development the New Urban Agenda. It is time to “[build] back differently.

Improving citizens’ access to mental health programs and developing holistic strategies to address mental illness remains a key concern worldwide. Without transformative action, mental health problems will “contribute to human suffering, premature mortality, and social breakdown, and will slow down economic recovery.” Improving the mental health of communities is essential not only for enhancing the quality of life of individuals but also for the continued economic and social development of states.

Recognizing the health-promoting value of landscapes, by integration of the Contemplative Landscape Model (CLM) by countries like Singapore and Sweden highlights its potential as a vital tool in integrating Nature-Based Solutions into national public health policies. It is, therefore, crucial to continue educating governments and decision-makers across the globe on the impact of evidence-based landscape design on public health. Through continued collaboration, research, and innovation, the CLM can become a foundational tool for preventive health strategies, helping to promote healthier, happier, and more resilient communities across the globe.

Reference List

Grahn, P., & Pálsdóttir, A.-M. (2021). Does more time in a therapeutic garden lead to a faster return to work? A prospective cohort study of nature-based therapy, exploring the relationship between dose and response in the rehabilitation of long-term patients suffering from stress-related mental illness. International Journal of Physical Medicine & Rehabilitation, 9, 1000614. https://doi.org/10.4172/2329-9096.1000614

Grahn, P., Pálsdóttir, A.-M., Ottosson, J., & Jonsdottir, I. (2017). Longer nature-based rehabilitation may contribute to a faster return to work in patients with reactions to severe stress and/or depression. International Journal of Environmental Research and Public Health, 14(11), 1310. https://doi.org/10.3390/ijerph14111310

International Union for Conservation of Nature. (n.d.). Nature-based solutions. https://iucn.org/our-work/nature-based-solutions

National Parks Board. (n.d.). City in nature. https://www.nparks.gov.sg/about-us/city-in-nature

Olszewska-Guizzo, A., Fogel, A., Escoffier, N., Sia, A., Nakazawa, K., Kumagai, A., Dan, I., & Ho, R. (2022). Therapeutic garden with contemplative features induces desirable changes in mood and brain activity in depressed adults. Frontiers in Psychiatry, 13. https://doi.org/10.3389/fpsyt.2022.757056

Olszewska-Guizzo, A., Russo, A., Roberts, A. C., Kühn, S., Marques, B., Tawil, N., & Ho, R. C. (2023). Editorial: Cities and mental health. Frontiers in Psychiatry, 14, 1263305. https://doi.org/10.3389/fpsyt.2023.1263305

Olszewska-Guizzo, A., Sia, A., Fogel, A., Escoffier, N., & Dan, I. (2022). Features of urban green spaces associated with positive emotions, mindfulness, and relaxation. Scientific Reports, 12, 20695. https://doi.org/10.1038/s41598-022-24637-0

Olszewska-Guizzo, A., Sia, A., & Escoffier, N. (2023). Revised contemplative landscape model (CLM): A reliable and valid evaluation tool for mental health-promoting urban green spaces. Urban Forestry & Urban Greening, 86, 128016. https://doi.org/10.1016/j.ufug.2023.128016

Pálsdóttir, A.-M., O'Brien, L., Poulsen, D., & Dolling, A. (2021). Exploring migrants’ sense of belonging through participation in an urban agricultural vocational training program in Sweden. Journal of Therapeutic Horticulture, 31(1), 11.

Pálsdóttir, A. M., Wissler, S. K., & Thorpert, P. (2024). An innovative approach in research and development of clinical nature-based rehabilitation in health care and vocational training: The living laboratory, Alnarp rehabilitation garden. Landscape Architecture, 31(5), 116-123. https://doi.org/10.3724/j.fjyl.202404020196

Region Skåne. (n.d.). Naturunderstödd rehabilitering. https://vardgivare.skane.se/vardriktlinjer/forsakringsmedicin/naturunderstodd-rehabilitering/

UN-Habitat. (2022). World cities report 2022: Envisaging the future of cities. United Nations Human Settlements Programme (UN-Habitat). https://unhabitat.org/sites/default/files/2022/06/wcr_2022.pdf

United Nations. (n.d.). The 2030 agenda for sustainable development. https://sdgs.un.org/2030agenda

Wissler, S. K., & Pálsdóttir, A. M. (2024). A quality assurance framework for outdoor environments, facilities, and program standards in nature-based rehabilitation. Landscape Architecture, 31(5), 91-102. https://doi.org/10.3724/j.fjyl.202312140567

World Health Organization. (2021). Mental health promotion and mental disorders prevention: Framework for a comprehensive mental health strategy in Europe. WHO Regional Office for Europe. https://www.who.int/europe/publications/i/item/9789289055666

World Health Organization. (n.d.). Global health estimates: Leading causes of DALYs. https://www.who.int/data/gho/data/themes/mortality-and-global-health-estimates/global-health-estimates-leading-causes-of-dalys

World Health Organization. (n.d.). One Health. https://www.who.int/health-topics/one-health#tab=tab_1

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Visiting Nature’s Embrace: A Singapore Exhibition Showcasing the Healing Effects of Nature

Have you ever wondered why vacation destinations often feature a natural landscapes? And if you can find this type of natural paradise right here in Singapore?

With support from Singapore’s National Parks Board, the Mind Art Experiential Lab of the National University of Singapore’s Yeo Boon Khim Mind Science Centre has curated the “Nature’s Embrace: A Gift to the Mind” exhibition. The exhibition is open for appointment-based viewing until September 2024. It allows visitors to explore the connection between nature and mental well-being through serene visuals and calming nature melodies. Not to mention, it also provides techniques that can improve the mind-body-nature connection that you can try at home.

Nature’s gifts

Upon entering the exhibit, visitors are greeted by a panel mapping the effects of urban nature on health, ranging from physical well-being and social interactions to mental health. This isn’t an easy feat to illustrate, but the aesthetically pleasing, forest-themed visuals and bite-sized text do the job well.

The exhibit then introduces visitors to the concept of “mindfulness.” Here mindfulness is defined as the awareness that comes from paying attention to the present moment in a non-judgemental manner. By slowing down and becoming more aware of our thoughts and surroundings, we can acknowledge and process them, rather than leaving them to accumulate.

The next exhibition panel demonstrates how nature can facilitate mindfulness by offering restorative settings that engage our senses with soothing features. This provides a break from everyday stressors and allows us to recharge. Imagine the sounds of birds singing in the morning or water trickling down a small waterfall as you stroll amongst lush greenery. Add in a light breeze and subtle flowery scents. These elements bring our attention back to the present, moving us away from the worries of the day.

Panel introducing the features of nature that help facilitate mindfulness.

The exhibition features leading studies conducted by the center on the health benefits of nature on the citizens of Singapore. These include the effects of therapeutic gardening, such as a local 10-week therapeutic horticulture program, on the motor, cognitive, and psycho-social well-being of older adults.

But how do we translate these findings to improve the spaces around us? Dr. Agnieszka Olszewska-Guizzo’s study on urban green spaces does just that, identifying landscape features that improve mood and boost brain activity. These features, such as high perceived biodiversity and multiple landscape layers, elevate inner calmness, reduce distracting thoughts, and help the mind process information in a clear and neutral manner. This research led to the development of the Contemplative Landscape Model, which is now used to design parks in Singapore to enhance their restorative effects.

The seven Contemplative Landscape Model features that can be seen in nature.

Seeking Solace in the Forest

Picture this. Lush, multi-layered tropical vegetation surrounding a wall with a gentle stream of water flowing down. You can even hear the sound of water as it makes its way across the panel. The “Nature’s Embrace Water Feature” is an installation that engages all the senses of visitors, reflecting the tranquil effects of a forest.

Nearby is the Tropical Paludarium, showcasing a naturalistic representation of what we would typically imagine in a tropical forest river channel. The transparent glass reveals a vertical cross-section, from the canopy layers of vegetation above to the extensive roots reaching into the fine sand and rocks below. This cross-section allows visitors to appreciate the biodiversity and elements that create a healthy ecosystem.

A panel behind the Tropical Paludarium explains the practice of forest bathing, Shinrin-yoku. Originating from Japan, Shinrin-yoku offers physical and mental health benefits when done mindfully, even in Singapore’s highly urbanized landscape. The study conducted by the center found that regular guided forest bathing walks can reduce backaches, lower blood pressure and anxiety, as improve sleep, empathy, and positivity.

Shiinrin-yoku’s health benefits study on Singapore’s population.

The landscape then makes a drastic shift to a mostly white and open installation. The Dry Garden replicates the Japanese stone gardens, Karesansui. With its distinct five-stone arrangement, it evokes the ripple effect of water. The open spaces and white-grey colors create a sense of peaceful silence, demonstrating how different natural landscapes can positively affect us.

Bringing Nature and its Gifts to our Living Spaces

In the middle of the exhibition space, visitors are introduced to nature-based activities that enhance mindfulness. Besides gardening, therapeutic horticulture activities can be done indoors, such as creating terrariums and moss art. By immersing in micro-landscaping, visitors can engage their focus and usually hidden creativity, evoking a sense of exploration and, eventually, a sense of achievement.

Moss art created by the exhibition’s visitors framed for the public.

For a less nature-based activity, mandala creation and meditation combine the effects of the open, circular formation seen in Japanese stone gardens with the self-expression and engagement of horticulture activities, promoting contemplation, creativity, and relaxation. The exhibition also offers paid terrarium and forest bathing workshops for those interested.

Beautiful mandala art pieces produced by some of the exhibition’s visitors.

Through this short immersive experience, visitors learn different ways to improve their well-being using the healing features of nature. More importantly, it reminds us that these urban green spaces are worth protecting and rehabilitating for both the Earth’s and our well-being.