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urban trees

Using Drones to Maintain Urban Woods and Greenery

April 15, 2015 by Leda Marritz

Drones and urban greenery

Unmanned Aerial Vehicles are all over the news. As they get lighter and more affordable, the applications for their use widen. Brian Ritter, an ISA Certified Arborist, Registered Forester, and current PhD candidate in Forest Resources at Clemson University, talks here about their applications in urban forest inventories.[read more]

How OpenTreeMap Crowdsourced Inventory Reveals the Benefits of Urban Forests

April 2, 2015 by Leda Marritz

Tree Mapping Tools

OpenTreeMaps are collaborative, crowd-sourced projects where citizens help inventory urban trees, learn about the environmental benefits trees provide and explore nature in their city. Kelaine Ravdin, owner of Urban Ecos, has worked as the project lead on OpenTreeMap projects across California.[read more]

How Arborists can Work with Developers to Preserve Green Infrastructure Under Pressure

March 24, 2015 by Leda Marritz

Green Urbanism Trends and Meaning

David Dockter, from the Planning and Community Environment and Public Works in Palo Alto, explains how to work with developers to overcome the urban pressures on the needs of – and for – trees. He describes how he helps them understand the benefits, and shows how he uses building permits and planning tools as levers.[read more]

7 Ways in which Trees and Vegetation are Essential for Cities and Health

March 23, 2015 by Kaid Benfield

Urban Trees and Public Health

The National Arbor Day Foundation has a simple app on its website that allows visitors to see how a city changes as it adds tree cover and other vegetation. Using a little sliding tool, one can gradually change the illustration from one with few trees to one with abundant trees, and the difference is striking.[read more]

Three Stories of How Trees Become Widgets to Bring People Together

March 10, 2015 by The Nature of Cities

Caring for trees makes people happy

Three stories of my engagements with street trees and reforestation sites to explore affective experiences between me and the trees. This is how trees become widgets to bring people together.[read more]

How to Tell a Compelling (Tree) Story

January 18, 2015 by Leda Marritz

Making Trees Compelling

We spill a lot of ink on this blog on topics like policy, history, research, and opinion as they relate to green infrastructure. But where trees are concerned, sometimes it’s before and after photos that tell the most compelling story. Pictures document change in a completely different way than words ever can.[read more]

Vancouver's First Urban Tree Nursery Opens in the Downtown Eastside

August 5, 2014 by Jillian Glover

Vancouver Urban Tree Nursery

Carbon dioxide absorbers. Oxygen providers. A source of shade from the elements. Added peace and beauty to gritty urban streets. Trees provide all of these benefits, making them essential to city life. However they are rarely nursed and grown to maturity in the city.[read more]

High Tree Canopy Cover Results In Fewer Heat-Related Emergencies

July 29, 2014 by Leda Marritz

Urban Tree Canopy and Health

As an MLA student at the University of Guelph, Drew Graham studied how heat-related emergency calls were distributed throughout a city. What he found was that areas with low tree canopy cover had significantly higher heat related emergencies and deaths.[read more]

Treating Trees as Actual Infrastructure

July 20, 2014 by Leda Marritz

A couple of weeks ago my brother sent me a link to a story on WNYC about the variable mortality rates for trees that were planted as part of New York City’s Million Trees initiative. We’ve seen the uneven outcomes of planting efforts like these before, and New York is no exception.[read more]

Is Average Tree Lifespan a Meaningful Number?

July 13, 2014 by Leda Marritz

Tree Life Span

7 years. 13 years. 15 years. You’ve probably heard all of these figures (and more) applied to the true average lifespan of a street tree. So which one is correct? According to Lara Roman, a Research Ecologist with the USDA Forest Service, the question is more complicated than it first appears.[read more]

Urban Forests for Health and Safety

June 30, 2014 by Gerdo Aquino
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Urban Greenery and Public Health

In Curitiba and Edmonton, along with other cities that are pursuing “Million Trees” initiatives, local governments have caught on to the fact that investing in the urban forest and its role as collector and purifier of storm water is undoubtedly one of their best flood insurance options.[read more]

A Brief History of Trees in Suspended Pavement

May 21, 2014 by Leda Marritz

Trees in Pavement

When we talk about low-impact development and design today, the term “suspended pavement” comes up a lot, but it occurred to me recently that this term is rarely defined. Here, I walk through suspended pavement’s history, uses, composition, and case studies.[read more]