Effect of predictors of visual preference as characteristics of urban natural landscapes in increasing perceived restorative potential

Current literature on restorative environments generally shows the importance of urban natural landscapes in increasing perceived restorativeness of urban environments. However, little is known about the positive role of visual characteristics of urban natural landscapes in increasing Perceived Restorative Potential (PRP) of urban environments. This study aimed to understand the role of four predictors of visual preference as characteristics of urban natural landscape on the restorativeness of environments. In this study, 120 students from Universiti Putra Malaysia rated 12 colored slides of urban natural landscape scenes for four restorative components (Being away, Fascination, Coherence, and Compatibility), four predictors of visual landscape preference (Coherence, Complexity, Legibility, Mystery) and a criterion variable (PRP). Coherence, however, was considered as a predictor of visual landscape preference since it is not a significant predictor in explaining PRP. Results indicate that Coherence, Complexity, and Mystery positively explained PRP while Legibility did not. Further analysis revealed that the effect of Coherence and Complexity on PRP was fully mediated by the restorative components and Mystery was only partially mediated. The findings indicate that some predictors of visual landscape preference of urban natural landscapes contribute to increasing PRP of urban landscapes. Although Coherence as a restorative component was not a significant predictor of PRP, it contributed toward increasing the restorative potential of urban natural landscapes when considered as a predictor of visual landscape preference. The results of this study can aid city planners, landscape architects and developers with regards to the influence of visual landscape characteristics in increasing the restorative potential of urban environments.     

Stress recovery and restorative effects of viewing different urban park scenes in Shanghai,China

ObjectivesMany studies have found that natural environments benefit human health and wellbeing, but few have measured restorativeness of specific landscape components, especially in Chinese settings. Because the rapid urbanization of China is accompanied by increasing predomination of hardscape components in cities, the restorative quality of urban green space is a crucial issue. This study explored the stress recovery effects of different videotaped scenes, using six urban parks and one urban roadway scene. Potentially restorative urban park scenes were controlled for nature-based vs. hardscape components, presence/absence of people, and level of openness.MethodsSubjects were Chinese university students (N = 140) aged 18–24. After completing an oral exam as a stressor, an equal number of males and females were randomly assigned to watch one of the seven videotaped scenes during a stress recovery stage, while data were collected on changes in stress and attentional levels. Physiological responses were measured by Electrocardiography (ECG) and Skin Conductance Response (SCR). Psychological responses were measured by the state (short-term) version of the State-Trait Anxiety Inventory (STAI-S), the Digit Span Backwards (DSB) test, and the Perceived Restorativeness Scale (PRS).ResultsIn a Chinese sample, this study confirmed previous findings that nature-based urban park scenes relieved stress and restored attentional levels, while viewing an urban roadway increased negative feelings. Overall perceived restorativeness was significantly higher in two scenes depicting a Lawn without people and a Small Lake, compared with a paved Plaza with or without people, confirming previous findings that restorativeness is associated with predominance of nature-based landscape components. This study also confirmed previous findings that outdoor scenes without people were more restorative than scenes depicting people.DiscussionThis study found different levels of restorativeness associated with different landscape features, and helped confirm that nature-based components are more likely to reduce stress than hardscape components, using Chinese urban scenes with a Chinese population. Findings can be used in future planning and design of urban spaces in China, emphasizing the value of parks and green spaces in relevant contexts.     

The perceived restorativeness of gardens – Assessing the restorativeness of a mixed built and natural scene type

Natural environments have been found more restorative than built environments but studies have also highlighted mixed built and natural environments. The aims were to examine the perceived restorativeness of gardens, and evaluate the performance of the Perceived Restorativeness Scale, PRS, when applied to two examples from the same mixed built natural scene type rather than to a contrast between built and natural. The results show that the gardens are perceived restorative and the PRS also discriminated between the two gardens. This points to the PRS being a useful tool and emphasizes the shortcomings of broad scene type definitions. The results show that one scene type can include environments that are significantly different in perceived restorativeness. This underlines the need to collect data on a greater number of different scene types and examples within each type, as well as to have more controlled definitions of content and scene types to understand the relationship between the physical expression of a place and its potential of being restorative. The results show that the PRS is sensitive to place characteristics at subscale level, showing a high Being Away score for both gardens and a Scope score that differed substantially. The results show a high correlation between restorativeness and preference.     

Natural or artificial? Exploring perceived restoration potential of community parks in Winter city

Urban community parks, as widely distributed and frequently used small public urban green spaces, play an essential role in meeting the growing needs of residents for recovery. However, previous studies focus on the restorative benefits of nature and have rarely measured the restoration of winter scenes and artificial scenes. This paper selects a typical small community park in the winter city of China and studies how landscape elements affect restorative benefits through the setting of seasonal virtual scenes. Respondents were asked to rate natural, dynamic and seasonal virtual scenes in terms of sense of being away, extent, fascination, compatibility, and restorative potential. The results show plants with rich layers and large coverage areas have a significant positive impact on human perception of recovery, vitality facilities have no significant impact on perceived recovery, and the number of active people has a significant negative impact on perceived recovery. The plant landscape in winter and summer has the same effect on attention recovery, and seasonally induced changes in plant vision can enhance restorative benefits.     

Is virtual reality a valid tool for restorative environments research?

This study examines the validity of virtual reality for assessing the restorative quality of environments. In Study 1, participants (N = 23) visited a real natural and a real urban environment, after completing a task to induce mental fatigue (i.e., a Sudoku task). We found that perceived restorative characteristics, preference ratings, experienced pleasure and self-reported restoration were higher in a real natural environment compared to a real urban environment. Perceived restorative characteristics could predict pleasure and restoration for both the real natural and urban environments, as well as preference for the real natural environment. In Study 2, participants (N = 26) visited a virtual natural and a virtual urban environment, again following a mental fatigue induction. Findings showed that virtual simulations of a natural and urban environment elicit similar effects as real counterparts of these environments. Perceived restorative characteristics, preference, pleasure and restoration were higher in a virtual natural environment compared to a virtual urban environment. Additionally, perceived restorative characteristics could predict pleasure and restoration for both the virtual natural and urban environments, and preference for the virtual natural environment. We did not find significant differences in perceived restorative characteristics between the real and virtual butterfly garden. Moreover, similar restorative characteristics predicted preference, pleasure and restoration in the real butterfly garden and the virtual butterfly garden. These findings indicate that virtual reality can be a valid tool for restorative environments research.     

Effects of urban waterfront park landscape elements on visual behavior and public preference: Evidence from eye-tracking experiments

High-quality urban blue-green spaces are essential to enhance the well-being of residents. Public preferences in urban landscapes are closely related to visual behavior and can meet human needs. By combining objective eye-movement data with subjective evaluation data, public preferences for blue-green typical spatial waterfront parks were analyzed based on visual behavior. Taking Wuhan, a megacity in China, as an example, four types of landscapes were identified: waterscape, plantscape, hardscape, and integrated landscape. Using visual clustering to identify eye movement indicators, we analyzed the influence of element types, proportions and combinations on public preferences based on visual behavior differences related to landscape elements. The results indicated that: (1) visual behaviors differ among elements and preferences, arbor commands overall attention, and pavilion is the element attended to first. (2) The positive correlation between water and fatigue recovery increased by 0.163 after combination with reflection, while the correlation between arbor and fatigue recovery changed from 0.353 (p < 0.01) to − 0.251 (p < 0.01) after combination with shrub and grass. (3) Plantscape and waterscape were rated as more natural, intimate, and restorative, but the most element-rich integrated landscape had the highest beauty ratings. Hardscape had significantly lower ratings but were generally considered to be fully utilized spaces. (4) The most significant visual behavior factor affecting evaluations was fixation duration, and the most critical landscape elements were arbor and pavilion. This study reveals differences in people's visual perceptions and preferences for waterfront parks through eye-movement experiments, and could lead to more judicious landscape element selections and park space compositions.     

Tranquillity Trails for urban areas

Tranquil spaces can be found and made in the city and their promotion and use by residents and visitors is an important means of building resilience. Studies have shown that spaces that are rated by visitors as tranquil are more likely to produce higher levels of relaxation and less anxiety that should ultimately result in health and well-being benefits. Such spaces can therefore be classed as restorative environments. Tranquil spaces are characterized by a soundscape dominated by natural sounds and low levels of man-made noise. In addition, the presence of vegetation and wild life has been shown to be an important contributory factor. Levels of rated tranquillity can be reliably predicted using a previously developed model TRAPT and then used to design and identify tranquil spaces, improve existing green spaces and develop Tranquillity Trails to encourage usage. Tranquillity Trails are walking routes that have been designed to enable residents and visitors to reflect and recover from stress while receiving the benefits of healthy exercise. This paper describes Tranquillity Trails designed for three contrasting areas. Predictions of the rated tranquillity have been made along these routes and feedback from users was elicited at one site that confirmed the expected benefits. 199 words     

Bringing nature to work: Preferences and perceptions of constructed indoor and natural outdoor workspaces

From the mere presence of plants to window views of nearby nature, contact with nature in the workplace has been associated with increased productivity and creativity, as well as positive emotional and physical health outcomes. Nevertheless, if nature is to be incorporated within or near workplaces effectively, it is important that workers perceive natural spaces to be conducive, and not detrimental, to performance on activities that they may engage in at work or else these changes to the physical environment may not be fully embraced by workers. Thus, in the current research we examine workers’ preferences and perceptions of different natural and constructed (built) environments for different workplace activities. In Study 1, 64 knowledge workers were exposed to images of natural outdoor and constructed indoor workspaces. They selected where they thought they would best and least be able to perform different workplace activities. Natural outdoor spaces were overrepresented as the best spaces for around 75% of the workplace activities, and were underrepresented as the worst spaces across all workplace activities. In Study 2 (N = 33), wherein participants evaluated various spatial qualities of the natural outdoor and constructed indoor space types that were included in Study 1, the natural outdoor spaces were rated as more fascinating, relaxing, open, bright, and quiet. The results of this research project suggest that natural outdoor workspaces are viewed as highly flexible, multi-use spaces that are appropriate for diverse workplace activities. Furthermore, access to diverse workspace types with different spatial qualities appears to be highly valued.     

Restorative potential,fascination, and extent for designed digital landscape models

Few studies have investigated whether manipulating objective measures related to fascination and extent affect respondents’ ratings of restorative potential (RP) and estimations of fascination and extent. The following study addresses this need. We manipulated or measured variables in 27 color digital landscape model views. Tree height represented a measure of fascination. Three measures related to extent: The number of organized plant groups represented coherence. Shannon’s Information Entropy bit values represented plant species complexity. The visible view polygon area in each model represented scope. We included 65 respondents’ RP ratings for the digital model views in analyses, along with estimations of fascination (n = 48), extent (n = 43), coherence (n = 38), complexity (n = 44), and scope (n = 35). Collinearity diagnostics indicated dependency between respondents’ estimations of fascination, extent, and complexity, and between estimations of coherence and scope. A strong, inverse correlation occurred between respondents’ RP ratings and the view polygon area. Repeated measures ANOVA test results suggest that respondents’ RP ratings increased as mean designed tree height increased. RP ratings for model views depicting scattered and formally arranged plants were significantly higher than views of clustered plants. Moreover, the decrease in RP ratings between scattered and clustered scenes was greater when plants represented three bits of entropy instead of two. Chief among the implications stemming from this study is that increasingly taller trees and groundcover plants may have increasingly greater restorative potential.     

Influence of environmental preference and environment type congruence on judgments of restoration potential

This study (N = 120) explored whether congruence between environmental preference and environment type influenced judgments of likelihood for directed attention restoration. The study differs from previous research by operationally defining preference as a representation of place identity from environmental psychology rather than as the attractiveness of the location. Preference was also treated as an influence on judgments of restoration potential instead of a consequence of directed attention fatigue. Persons experiencing images congruent with their environmental preference were expected to rate similar locations highest in restoration potential compared to incongruent images; however, this was not fully supported. Those with a nature preference perceived congruent environments as the most potentially restorative, but this was higher than, rather than equal to, the restoration expectations of those in the urban congruent condition. As expected, nature preferences influenced judgments of urban settings; this incongruence was rated least restorative. Persons with an urban preference perceived both nature and urban environments equal in restoration potential; this may explain circumstances when environment choice appears inconsistent to cognitive restoration goals. Water quality in the settings also influenced restoration judgments; pleasant waterscapes resulted in the best expectations. The findings illustrate the potential contribution of place identity from environmental psychology to the study of attention restoration outcomes and further support the growing literature endorsing the positive potential of urban settings.     

Emotional perceptions of people exposed to green and blue spaces in forest parks of cities at rapid urbanization regions of East China

Urbanization modifies the landscape with green and blue spaces (GBS), which further leads to a functional change along an urban-rural gradient. Emotional improvement is a critical service of GBS, which may be perceived and exposed through facial expressions by visitors. How people react, however, may vary at different locations of a city at varied phases of urbanization. In this study, happy and sad emotions were rated as scores from 7965 Sina-Weibo users who visited 77 GBS across 49 cities of East China in 2020. GBS were located in different regions of a city, either near downtown or in more rural-like regions. Compared to cities near the Hu Huanyong line, those along the eastern coast were built with parks that had smaller green spaces at lower elevations in locations near downtown. They also had larger blue spaces in parks at suburban areas of the same cities. People expressed more happiness in GBS in regions closer to remote rural regions, or in cities further from the eastern coast. Larger green spaces were associated with by the presentation more smiles in parks near downtown, while experiences in large blue spaces evoked positive emotions at suburban areas. Overall, GBS in population-dense regions of more developed cities can be perceived as an activation of exposing higher depression by visitors. More smiles can be exposed in GBS with a large green space near downtown, or with a large blue space at suburban regions of a city in East China.     

How perceived sensory dimensions of urban green spaces are associated with adults’ perceived restoration,stress, and mental health?

This study investigates associations between perceived sensory dimensions (PSDs) of urban green spaces (UGSs) and adults’ perceived restoration, stress, and mental health. Data were collected through surveys with 426 adults in 2019 in seven different UGSs in Aydın, Turkey. The PSDs of UGSs (nature, serene, space, rich in species, social, prospect, culture, and refuge) were evaluated and rated by two professional landscape architects. The perceived restorativeness (being away, fascination, coherence, and compatibility) was measured with the Perceived Restorativeness Scale, and health indicators (stress, mental health, mental health diagnosis, mental health treatment, general health, and quality of life) were measured with self-reported questions. Multivariate multiple regression analyses were conducted to examine associations controlling for confounding factors. Four of the eight PSDs were analyzed due to multicollinearity issues in the study. Regression analyses showed that ‘nature’ was positively associated with perceived restorativeness, stress, and mental health, while ‘refuge’ was only positively associated with perceived restorativeness. On the other hand, ‘serene’ was negatively associated with perceived restorativeness. Whereas ‘rich in species’ was found to be negatively associated with perceived restorativeness and positively associated with mental health diagnosis. In addition, findings showed that frequency of and duration of UGSs visit were negatively associated with perceived restorativeness. The findings suggest that providing characteristics of ‘nature’ and ‘refuge’ in UGSs may provide restorative effects and mental benefits to adults. However, unexpected results suggest that further research is needed before using these characteristics as a tool by landscape architects and city planners.     

Restoration and stress relief through physical activities in forests and parks

A field survey assessed the restorative effects of visiting an urban forest and a city park in Zurich, Switzerland. Respondents rated their headaches, level of stress, and how balanced they felt both prior to visiting the outdoor location and at the time of being interviewed. Suffering from headaches and stress decreased significantly, and feeling well-balanced increased significantly. The recovery ratio for stress was 87%, and the reduction in headaches was 52%, in terms of the possible improvements on five-point rating scales. With respect to feeling well-balanced, the observed changes amounted to 40% of the possible enhancement. Positive effects increased with length of visit, and individuals practising sports (e.g., jogging, biking, playing ball) showed significantly higher improvements than those engaged in less strenuous activities (e.g., taking a walk or relaxing). These findings support previous research on how exercise in green spaces promotes well-being and recovery from stress.     

Visual quality: An examination of a South American Mediterranean landscape,Andean foothills east of Santiago (Chile)

This study assessed landscape visual quality in a sector of Andean foothills, east of Santiago, Chile. Sample photographs were taken in four dominant native landscape types that were systematically selected on the basis of four categories of vegetation density. Visitors (n = 180) were randomly sampled from among the residents of Santiago. The results showed that native vegetation has a positive impact on visual quality. Sclerophyllous shrublands and ravines (associated with semi-arid forests) are rated higher than savannahs of “espinales” and shrublands with succulent plants (associated with semi-arid grassland with shrubs). Findings also indicate that landscape scenes with high-vegetation density have a positive effect on visual quality, while those with a low density have a negative one. The key is the amount of visual access, which also increases people's perceptions of safety and orientation. Finally, results showed that information variables are associated with people's visual appreciation. Two preference factors were found to be consistent with the model of spatial information of Kaplan and Kaplan (1989). The implications of the results for the enhancement of public consensus in the planning and management of the Andean foothills, east of Santiago, are also discussed.     

Is love for green in our genes? A critical analysis of evolutionary assumptions in restorative environments research

Within the field of restorative environments research, it is commonly assumed that restorative responses, triggered by exposure to natural elements and settings, are ultimately adaptive traits originating from our species’ long evolutionary history in natural environments. The aim of this article is to critically investigate the viability of this evolutionary view on restoration. In doing so, we specifically focus on Stress Recovery Theory (SRT), as this theoretical framework has most extensively elaborated on the supposed evolutionary origins of restoration. A detailed analysis of SRT's psycho-evolutionary framework shows that neither current empirical evidence nor conceptual arguments provide any strong support for the hypothesis of restorative responses to nature as an ancient evolved adaptive trait. Based on this conclusion we put forward an alternative model for restorative responses to nature based on processing fluency, which prima facie circumvents some of the pitfalls associated with evolutionary accounts for restoration. The Discussion section reflects on the implications of our critical discussion for the theory and practice of urban forestry and urban greening.     

Restorative properties of green sheltered spaces and their morphological characteristics in urban parks

The properties of green space for physical and mental health have been widely demonstrated, especially after the COVID-19 pandemic. However, few studies have systematically focused on spatial indicator thresholds that provide a sense of refuge with restoration benefits. Four morphological indicators as area, coverage, enclosure, and the ratio of width to height(D/H), were quantified for thirty-one scenes in outdoor green sheltered spaces in seven urban parks of Harbin in China. The results show that the sense of refuge and the morphological character of a green space constitute elements that influence restorative properties. Green spaces with different morphological indicators have different restorative properties. The morphological indicator ranges that produce better restorative properties were obtained: 250–500 m² for area, 0.25–0.35 for coverage, 0.3–0.4 or 0.8–1 for enclosure, and 0.7–1.5 for D/H. This can provide references for the construction of restorative activity spaces in urban parks.     

How do humans value urban nature? Developing the perceived biophilic design scale (PBDs) for preference and emotion

With the growth of urbanization and the increasingly hectic pace of life, exposure to urban nature within blue-green infrastructure is greatly impacting human health and well-being. Biophilia, an evolutional concept, conveys the initial connection between humans and nature; biophilic design transfers into design attributes to indicate the relationship between humans and the environment. A significant advantage of experiencing nature is positive restoration; however, only limited research has been conducted on connecting biophilic design and mental health. This study adopted our perceived biophilic design items (PBDi) to examine the relationship between landscape preferences and emotional states in urban green spaces. Online surveys (valid total n = 477) examining these biophilic items, landscape preferences, and emotional states were conducted. Seven aspects—(1) evolved human–nature relationships, (2) place-based relationships, (3) visual aesthetic quality, (4) state of natural change, (5) environmental perception, (6) sense of compatibility in the built environment, and (7) natural form of design method —were confirmed through exploratory factor analysis (EFA), with 64.35 % of the cumulative variance, and confirmatory factor analysis (CFA) demonstrated good convergent validity and discriminant validity. The overall perceived biophilic design scale (PBDs) with 28 items had a Cronbach’s α of 0.91. In addition, it was found that PBDs significantly explained landscape preferences and positive emotional states within urban nature. The findings provide an alternative tool for measuring human biophilic perceptions that influence environmental experiences. In addition, each item in the scale could be used as a biophilic guideline for designers and planners to reinterpret nature in cities and to enhance our connection to nature in general.     

The effects of naturalness,gender, and age on how urban green space is perceived and used

Neighbourhood green space serves an important function for the urban population, and provides valuable ecosystem services for human well-being. In this article, we investigate the effects of naturalness, gender, and age on the activities, aesthetics, and self-reported well-being associated with urban green space. Our findings are based on a postal survey of residents living in close proximity to six different green spaces in the city of Gothenburg, Sweden. It is shown that higher perceived naturalness generated more activities and higher aesthetic values and self-reported well-being for residents living close to urban green spaces. The results also indicated that, regardless of the type of naturalness, women were more active in urban green spaces than were men. Women also saw greater aesthetic value in green spaces than men did, and had higher self-reported well-being associated with the urban green spaces. Finally, older residents were shown to participate in a greater number of nature-related activities than younger residents. Older residents also saw greater aesthetic values and had higher self-reported well-being associated with urban green spaces than younger people did. Seemingly, this poses a considerable planning challenge if areas of perceived naturalness are to be retained in cities, since the present trend is for reduced green spaces in cities and a ‘parkification’ of surviving natural areas. Further, because of the importance of perceived natural areas to the elderly, and in particularly women, distances to urban green areas should not be too great.     

Low-maintenance green tram tracks as a socially acceptable solution to greening a city

The creation of green tramways has become a common solution in many European cities in efforts to meet the increasing demands for green areas. However, maintaining high-quality vegetation requires costly maintenance. In this study, we assessed the possibility of managing green tram tracks in a manner that combines people’s attitudes with economic and ecological performance. We examined low-maintenance vegetation along existing tram tracks that has undergone natural succession to answer several specific questions. The aims of the present study include 1) assessment of how residents perceive the existing low-maintenance green tramways of various ages (1-11 years), 2) identification of measurable vegetation quality parameters affecting residents’ aesthetic preferences, and 3) assessment of whether viewing distance (from close up or from a distance) is a factor affecting residents’ perception of green tramways. Based on our results, green tramways were valued five times higher by residents than conventional tram tracks. Respondents indicated that the most important features of green tracks were vegetation coverage, with only a minority specifying factors such as uneven colour (33.9%) or the presence of weeds (7.1%). Perception also depended on turf age and biodiversity. Additionally, the greatest effect on the perception of tramways was the viewing perspective: as deficiencies in quality became less visible and were considered negligible, tramways were perceived 19% more favourably when viewed at a distance than when viewed close-up. The results of our research indicate that low-maintenance green tram tracks are an economically feasible solution for introducing more green areas into cities. Despite deficiencies in turf quality, this approach can become an accepted element of a city’s green infrastructure, and such a solution should be encouraged. Considering residents’ expectations, high-quality turf should be intensively maintained in only areas observed from a short distance.