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Establishing a wildflower meadow at King’s College, Cambridge bolstered biodiversity and reduced greenhouse gas emissions, study finds.

A new study found that establishing a wildflower meadow in the historic grounds of King's College, Cambridge increased species richness and abundance by three times compared to adjacent lawn. The meadow also reduced greenhouse gas emissions by an estimated 1.36 tonnes CO2-e per hectare per year.

SourceUniversity of Cambridge·JournalEcological Solutions and Evidence·TypeSurvey·DateMay 23, 2023

Smartphone use goes up in city parks, but down in forests

A study of 700 participants found that time outdoors doesn't always reduce smartphone screentime. However, visits to nature reserves or forests saw significant declines in screentime compared to urban locations. Participants who visited wilder areas spent more time disconnected from their smartphones and regained attention.

SourceUniversity of Vermont·JournalEnvironment and Behavior·TypeObservational study·DateMay 15, 2023

Can a city store as much carbon as a forest?

A new metric, called the carbon storage (CS) factor, enables urban planners to evaluate how a new development will affect the city's carbon balance. By using the right kind of wooden construction technologies, up to 70% of future construction can preserve lost forest carbon storage capacity.

SourceAalto University·JournalEnvironmental Research Letters·DateMay 9, 2023

Machine learning can support urban planning for energy use

Researchers at Drexel University developed a machine learning model to predict Philadelphia's future energy use based on zoning decisions and building characteristics. The model uses two machine learning programs to tease out patterns from massive datasets and make projections about future energy consumption.

SourceDrexel University·JournalEnergy and Buildings·TypeData/statistical analysis·DateMay 4, 2023

Walking on familiar streets: insights on how neighborhood attachment may promote people's walking behavior

A new study found that neighborhood attachment is positively associated with people's walking behavior and physical activity. Place attachment, a person's emotional and functional relationship with their surroundings, influences the likelihood of engaging in outdoor activities like walking.

SourceJapan Advanced Institute of Science and Technology·JournalLandscape and Urban Planning·DateApr 18, 2023

Implementing green corridors throughout Barcelona could reduce annual antidepressant use and visits to mental health specialists by 13%

A Barcelona Institute for Global Health study suggests that increasing green space in the city may help alleviate mental health issues. By 2025, the expansion of Green Axes (Eixos Verds) could lead to a 14% decrease in cases of poor mental health and prevent 13% of antidepressant use, resulting in annual savings of €45 million.

SourceBarcelona Institute for Global Health (ISGlobal)·JournalEnvironment International·TypeObservational study·DateMar 29, 2023

Australians paying $6 billion for unused apartment parking

A new study found that 20% of households have too little allocated parking and 13.4% of surveyed households do not own a car but are still allocated a parking space. Experts are calling for planning policy to 'unbundle' parking spaces from apartments to reduce housing costs and alleviate street parking woes.

SourceRMIT University·JournalJournal of Transport Geography·TypeSurvey·DateMar 29, 2023

Financial landlords own four times more rental units than previously thought

Research reveals that financial landlords, including private equity firms and institutional investors, own nearly one in eight rental units in Montreal. This trend is linked to gentrification, displacement, aggressive rent increases, and eviction practices, particularly affecting precarious, racialized, and student groups.

SourceUniversity of Waterloo·JournalJournal of the American Planning Association·DateMar 20, 2023

Where the sidewalk ends

A new open-source tool called TILE2NET uses aerial imagery and image-recognition to create complete maps of sidewalks and crosswalks. The tool has been trained on 20,000 aerial images from Boston, Cambridge, New York City, and Washington, recognizing 90% or more of all sidewalks and crosswalks in these cities.

SourceMassachusetts Institute of Technology·JournalComputers Environment and Urban Systems·DateMar 15, 2023

A mixture of trees purifies urban air best

A study by University of Gothenburg found that conifer trees are generally better at purifying air from gaseous pollutants, while broadleaved trees excel at capturing particle-bound pollution. The researchers analyzed leaves and needles from eleven different tree species to determine which ones absorb air pollutants most effectively.

SourceUniversity of Gothenburg·JournalEcological Indicators·TypeContent analysis·DateMar 6, 2023

America on the move: How urban travel has changed over a decade

A Florida Atlantic University study reveals that while private automobiles remain dominant, the share of car trips has decreased since its peak in 2001. In contrast, transit, non-motorized, and taxicab trips have increased. Lower-income groups rely heavily on public transportation due to limited mobility options.

SourceFlorida Atlantic University·JournalTransportation Research Part D Transport and Environment·TypeMeta-analysis·DateMar 1, 2023

How to predict city traffic

A new machine learning model can predict city traffic activity in different zones of cities, enabling targeted responses from policymakers. Understanding people's mobility patterns is crucial for improving urban traffic flow, and the model provides insights into urban interactions.

SourceComplexity Science Hub·JournalScientific Reports·TypeComputational simulation/modeling·DateFeb 28, 2023

To promote exercise, planners must look beyond cities

Researchers from Cornell University recommend that planners in suburban and rural communities focus on promoting recreational programs, expanding transportation options, and creating safer environments to help an aging population get more exercise. The study found that demographic factors, such as minority populations and lower incomes...

SourceCornell University·JournalInternational Journal of Environmental Research and Public Health·DateFeb 27, 2023

Urban birds prefer native trees

A long-term study from Lund University in Sweden found that native trees are preferred by urban birds due to their availability of resources. Non-native trees lack an evolutionary history with the local ecosystem and have fewer insects, leading to a shortage of food for insectivorous birds.

SourceLund University·JournalOecologia·DateFeb 13, 2023

THE LANCET: Planting more trees could decrease deaths from higher summer temperatures in cities by a third, modelling study suggests

A modelling study suggests that increasing urban tree cover to 30% could decrease deaths from higher summer temperatures by a third. The study found that tree cover reduced urban temperatures by an average of 0.4 degrees during the summer, resulting in 6,700 premature deaths attributable to hotter urban temperatures.

SourceThe Lancet·JournalThe Lancet·TypeComputational simulation/modeling·DateJan 31, 2023

Researchers find that to achieve long-term sustainability, urban systems must tackle social justice and equity

Researchers emphasize the importance of inclusivity and understanding past policies affecting marginalized communities in urban planning, design, and public policy efforts. The study identified three core focus areas: social justice and equity, circularity, and digital twins, to address environmental issues and infrastructure challenges.

SourceGeorgia Institute of Technology·JournalJournal of Industrial Ecology·TypeObservational study·DateJan 23, 2023

AI improves detail, estimate of urban air pollution

Researchers developed machine learning models to accurately calculate fine particulate matter in urban air pollution using AI and traffic data. The models provide a high-resolution estimation of city street pollution surface, enabling transportation and epidemiology studies to assess health impacts.

SourceCornell University·JournalTransportation Research Part D Transport and Environment·DateJan 13, 2023

A Concordia urban forest-mapping project wraps up with help from public and private data

The study highlights the importance of a diverse city tree population, with private residences contributing significantly to urban forest diversity and structure. The research found that private trees serve unique functions such as providing fruit, flowers, or aesthetic beauty, while municipal trees tend to be bigger and more resilient.

SourceConcordia University·JournalUrban Forestry & Urban Greening·TypeData/statistical analysis·DateJan 10, 2023

Researchers propose a more effective method to predict floods

A team of researchers from Xi'an Jiaotong-Liverpool University and other institutions has identified a flexible and user-friendly model for predicting flood frequency in a changing environment. The fractional polynomial-based regression method is more effective than existing models, which often fail to account for factors like climate ...

SourceXi'an Jiaotong-Liverpool University·JournalJournal of Hydrology·TypeComputational simulation/modeling·DateJan 9, 2023

Research in Japan suggests using built environment design to fight depression

A study published in Landscape and Urban Planning found that improved perceptions of neighborhood walkability and enhanced access to public transport and safety from crime reduce depressive symptoms. The researchers suggest building environment design may influence mental health through behavioral and social pathways.

SourceJapan Advanced Institute of Science and Technology·JournalLandscape and Urban Planning·DateDec 19, 2022

Digital healthcare, location optimization and road improvements are recommended to improve healthcare in Ho Chi Minh City

A study by the University of Eastern Finland and Vietnam National University found that people in urban areas have better access to healthcare than suburban residents. The researchers recommend digital healthcare solutions to improve healthcare quality and accessibility in a cost-effective manner.

SourceUniversity of Eastern Finland·JournalBMC Health Services Research·DateDec 8, 2022

Great Britain’s city centers ranked on “greenness”

A new study ranks Great Britain's city centers based on their green attributes, including tree cover, vegetation, and parks, revealing disparities in urban biodiversity and human health. The top five cities are located in southern England, while the bottom five relate to industrial areas in northern Britain.

SourcePLOS·JournalPLOS ONE·TypeObservational study·DateNov 23, 2022

CityAccessMap: Addressing urban inequalities with open-source data

The CityAccessMap tool assesses urban infrastructure distribution and identifies areas for improvement, helping policymakers address socio-economic disparities. Disadvantaged communities face lower access to urban services, which can hinder social mobility and exacerbate inequalities.

SourceDelft University of Technology·JournalEnvironment and Planning B Urban Analytics and City Science·TypeData/statistical analysis·DateOct 13, 2022

How to improve landscape visual aesthetic effects of street pedestrian spaces in China’s mountainous cities

A study assesses and optimizes the landscape visual aesthetic quality of street pedestrian spaces in Jinan, China's historic downtown, using panoramic images and deep learning methods. The research finds that urban streets with high aesthetic quality serve as corridors among mountains and natural landscapes, improving city image.

SourceHigher Education Press·JournalLandscape Architecture Frontiers·TypeCase study·DateOct 3, 2022

Risk of urban tree falls is influenced by building height and neighborhood age, Brazilian study shows

A Brazilian study of 26,616 tree falls in São Paulo found that building height and neighborhood age are key factors influencing the risk of tree failure. Sidewalk width and tree height were also found to be significant variables. The research provides valuable insights for urban planning and tree management in the city.

SourceFundação de Amparo à Pesquisa do Estado de São Paulo·JournalUrban Forestry & Urban Greening·DateSep 29, 2022

Less bird diversity in city forests

A study by Lund University found that cities negatively impact bird diversity in natural woodlands, with on average a quarter fewer species in urban forests compared to rural ones. This suggests that urban development can lead to biotic homogenization of woodland bird communities.

SourceLund University·JournalGlobal Change Biology·DateSep 29, 2022