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Finally, this paper discusses these patterns in a general sense for the purpose of addressing universal issues of human health and well-being (e.g., stress, visual acuity, hormone balance, creativity) within the built environment, rather than program-based or sector-specific space types (e.g., health care facility waiting rooms, elementary school classrooms, or storefront pedestrian promenades). As such, the focus is on patterns in nature known, suggested or theorized to mitigate common stressors or enhance desirable qualities that can be applied across various sectors and scales.
We hope this paper presents the foundation necessary for thinking more critically about the human connection with nature and how biophilic design patterns can be used as a tool for improving health and well-being in the built environment.
Psychological responses encompass our adaptability, alertness, attention,concentration, and emotion and mood. This includes responses to nature thatimpact restoration and stress management. For instance, empirical studies havereported that experiences of natural environments provide greater emotionalrestoration, with lower instances of tension, anxiety, anger, fatigue, confusionand total mood disturbance than urban environments with limited characteristicsof nature (e.g., 21. Alcock et al., 2013 ; 22. Barton & Pretty,2010 ; 23. Hartig et al.,2003 ; 24. Hartig et al., 1991 ).
Whether rural or urban, not all natural or tempered environments are 'green' in color, nor should they be. Desert species and terrain can be equally important in reinforcing a biophilic connection to place. Some habitats may engender a stronger positive response than others, but a biodiverse savanna-like scene will most likely be preferred over an area abundant yet trackless sand desert, the open ocean, or a dark forest.
In rural environments, human-nature interactions are abundant, and this regular exposure to nature has restorative qualities that we perhaps take for granted. Suburban settings are typically rife with intuitively applied biophilic design; the suburban yard with shade trees, grass, low shrubs, and beds of flowers is essentially an analogue of the African savanna. Porches and balconies offer more than just quaintness and real estate value; many suburban homes and urban rowhouses are raised 18 inches or more, creating a Prospect-Refuge condition with views from windows, stoops and porches. The potential human health benefits are undervalued in high-density settings where residential towers with balconies are both limited and only available to high-paying tenants.
Biophilic design patterns should be scaled to the surrounding environment and to the predicted user population for the space. Patterns can be applied at the scale of a micro-space, a room, a building, a neighborhood or campus, and even an entire district or city. Each of these spaces will present different design challenges depending on the programming, user types and dynamics, climate, culture, and various physical parameters, as well as existing or needed infrastructure.
Size and availability of space are two of the most common factors influencing feasibility of biophilic design patterns. For instance, the Prospect pattern [P11] typically requires significant space. Other patterns, such as Connection with Natural Systems [P7], may be more feasible where there is access to an outdoor space, which is a common challenge in dense urban environments. Yet small scale, micro-restorative Visual [P1] and Non-Visual Connections with Nature [P2] and Presence of Water [P5] can also be very effective. For instance, the psychological benefits of nature actually have been shown to increase with exposure to higher levels of biodiversity (118. Fuller el al., 2007 ), yet these benefits do not necessarily increase with greater natural vegetative area. From this we can derive that small, micro-restorative experiences that are also biodiverse are likely to be particularly effective at engendering a restorative biophilic experience.
Micro-restorative experiences might include moments of sensory contact with nature through a window, television, image, painting or an aquarium. In urban environments where sensory overload is common (119. Joye, 2007 ), such experiences will be most valued and impactful when situated in locations with high foot traffic, allowing for a greater frequency of access to trigger the desired biophilic response. Traditional Japanese doorway gardens are a perfect example of replicable small-scale interventions.
One of the cultural challenges to upholding that human-nature bond, as well as environmental stewardship, is a phenomenon known as Environmental Generational Amnesia, the shifting baseline for what is considered a normal environmental condition as it continues to degrade. As environmental degradation continues, the baseline continues to shift with each ensuing generation, each perceiving this degraded condition as the norm or non-degraded condition.
This shifting baseline varies across cultures, geographic regions and sub-groups (129. Kahn, 2009 ), influencing environmental stewardship, proximity and access to nature and the biophilic experience. Helping a community to understand what their home looked like when it was a healthy, intact ecosystem is one way of making a Connection with Natural Systems and will hopefully help foster and frame the importance of other areas of environmental quality.
Age and gender are also known to influence biophilic response trends. Women report higher perceived levels of stress than men, yet are less likely than their male counterparts to use available natural outdoor vegetative space during the work day (130. Lottrup, Grahn & Stigsdotter, 2013 ). Of particular interest is that the degree of enhanced immune function due to immersion in nature has been observed to differ between the genders. For instance, following a forest walk, immune function was increased for a period of 30 days in men, but only seven days in women (131. Li, 2010 ), suggesting that interventions targeting female populations in the workplace may need to either prioritize indoor nature experiences or improve accessibility for prolonged outdoor nature experiences.
Youth benefit the most from nature contact in terms of increasing self-esteem. The gains for self-esteem from nature contact are suggested to decline with age; elderly and youth benefit the least in terms of mood enhancement from nature contact (132. Barton & Pretty, 2010 ), yet both groups are equal in perceived restorativeness of natural over urban environments (133. Berto, 2007 ). With age also comes a differing preference in landscape in regards to perceived safety. While an urban woodland may be an enticing place for adventure for a child or teenager, the same condition could be perceived by adults and elderly populations as risky (134. Kopec, 2006 ), which could possibly be overcome by incorporating a Prospect-Refuge condition.
Monitoring efficacy of implemented biophilic design patterns for the express purpose of improving health and well-being is a new branch of inquiry. Variability in the built environment, as discussed here, creates a challenging framework for verification; quantitative metrics are often desired but not always appropriate, and the highly invasive nature of some measurement techniques and tools (i.e., fMRI, EEG) adds a layer of complexity and cost. Many of the current techniques used require strict control of variables and cost which tends to limit the size of the test group. There are, however, several new technologies, like wristband monitors, and very light weight headband EEG that may open up new rapid methods of testing; but until those technologies go mainstream, rapid testing can also be done in more rudimentary fashion and with a smaller budget.
Visual preference research indicates that the preferred view is looking down a slope to a scene that includes copses of shade trees, flowering plants, calm non-threatening animals, indications of human habitation, and bodies of clean water (Orians & Heerwagen, 1992). This is often difficult to achieve in the built environment, particularly in already dense urban settings, though the psychological benefits of nature are suggested to increase with higher levels of biodiversity and not with an increase in natural vegetative area (Fuller et al., 2007). Positive impact on mood and self-esteem has also been shown to occur most significantly in the first five minutes of experiencing nature, such as through exercise within a green space (Barton & Pretty, 2010). Viewing nature for ten minutes prior to experiencing a mental stressor has shown to stimulate heart rate variability and parasympathetic activity (i.e., regulation of internal organs and glands that support digestion and other activities that occur when the body is at rest) (Brown, Barton & Gladwell, 2013), while viewing a forest scene for 20 minutes after a mental stressor has shown to return cerebral blood flow and brain activity to a relaxed state (Tsunetsugu & Miyazaki, 2005).
Haptic: Pet therapy, where companionship and the act of petting and feeling the fur of domesticated animals, is known to have profound calming effects on patients; gardening and horticulture activities have shown to engender environmental stewardship among children, reduce self-reported fatigue while maintaining joint flexibility among adults (e.g., Yamane et al., 2004), and reduce perception of pain among senior populations with arthritis. The act of touching real plant life, versus synthetic plants, has also shown to induce relaxation through a change in cerebral blood flow rates (e.g., Koga & Iwasaki, 2013). These examples give reason to believe that the experience of touching other elements in nature, such as water or raw materials, may result in similar health outcomes.
When immersed in nature, we continually experience instances of non-rhythmic stimuli: birds chirping, leaves rustling, the faint scent of eucalyptus in the air. The built environment has evolved into a deliberately predictable realm. Even some highly manicured gardens and certainly interior vegetation lack the qualities needed to support non-rhythmic sensory stimuli. 2b1af7f3a8