Once large old trees are lost from the community, it is difficult if not impossible to replace their cultural and ecological function³. Nevertheless, emphasis must be made to preserve large, old trees as they provide numerous benefits³, especially in urban environments⁷⁷. It is difficult to develop a universal definition for a large, old tree³, largely given the diversity of tree species worldwide³ ⁷⁶ so there are limited management and conservation plans³. While trees in natural environments can survive for 100’s of years, the half-life of an inner street tree is 10 to 15 years⁷⁵. Despite their importance, these trees are declining globally⁷⁴. Large, old trees are critically important worldwide from an ecological and cultural perspective³. Large, old trees provide the most benefit. Decrease the time a house is on the market³⁴.Increase rental rates of business properties³⁰.
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Additionally, having well-maintained trees along city streets and retail areas as well as in residential areas can: Further, shopping areas with trees are more likely to be ranked as being more comfortable and having better upkeep, friendlier staff, and higher quality products²⁹. The presence of well-cared for trees encourages shoppers to spend more time at a business district, and they will travel a greater distance to visit that center, research has shown. Increasing food security of urban areas²⁷ ²⁸.Providing valuable carbon storage and sequestration²⁵ ²⁶.Protecting roadways and reducing the amount of asphalt sealers required²³.Reducing energy costs and use associated with heating and cooling¹³⁻¹⁷.Trees and greenspace provide important direct as well as indirect benefits social and biological benefits⁸ ⁹, such as: The compensatory value of the urban forest in the continental US is estimated to be worth more than $2.4 trillion⁶, with $18.3 billion worth of ecosystem benefits occurring annually⁷. Trees have a high return on investment due to ecosystem services.Įxperts suggest that every dollar invested on tree planting and management can result in a high return on investment⁴ ⁵ even as high as over 500%⁴. While not comprehensive, this list provides an overview of the many scientific benefits that trees, and greenspace with trees, provide to people both directly and indirectly. The future of urban forestry should focus on protecting large trees, as well as improving age structure, standards and planning management. These institutions provide valuable insight and leadership due to their expertise in botany and horticulture, as well as an established track record of public outreach and training. Botanical gardens and arboreta play an important role in this pursuit for a healthy and vibrant urban forest. Trees are a long-term solution for many issues people face and they are a valuable resource for every community, especially those in urban or suburban settings. Investing in trees through planting, care, and maintenance will produce a significant return on investments, especially as older and larger trees provide the most benefits³. Despite the critical importance of urban forest, urban tree cover continues to decline nationwide each year². Planting and maintaining trees, as part of urban planning and engineering solutions, can serve as a nature-based solution to many challenges communities face: managing stormwater, supporting mental and physical health for people, reducing crime, addressing pollution, and providing wildlife habitat.
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Over the past 30 years, science has demonstrated how trees in our landscapes benefit people and that well-maintained trees are an important asset to keeping a community healthy and safe. In order to establish healthy and vibrant communities, trees need to be part of the global discussion.
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Urbanization, coupled with a changing climate, is a challenge on a global scale that greatly impacts the health and well-being of humans. The Scientific Benefit of Trees for Peopleīy 2050, an estimated 66% of the total world’s population will be living in an urban environment¹.