Richard Adkins, the Forestry Supervisor for the city of Phoenix, Arizona, likes to joke that despite the perception, Phoenix actually does have an Urban Forest. I met Richard when we were both speakers this past August at the American Public Works Association (APWA). He spoke to me about Phoenix’s current urban forest and some of… More
A natural forest depends on a variety of partnerships between plants, animals, fungi and micro-organisms. An urban forest depends on a similarly complex series of partnerships, albeit mostly between humans. Many biological factors affect the survival of an urban tree. I want to compare two studies involving community forestry programs about young urban tree establishment… More
In part one of this post, I gave my recommendations for how to address tree maintenance needs in a smarter and more financially (and ecologically) sustainable way. Those recommendations are great, but also general. I think we benefit the most when we share as much specific information about implementing ideas as possible, so today I… More
If you’re a municipal arborist, you probably got into the field of tree care because you love working with trees and you could make a modest living. You know that that in cities maintenance is the only way that trees get large – and that size matters when we talk about the kind of ecosystem… More
If you’re involved with an urban development project, chances are trees are also involved in some way, depending on the local municipal codes. Existing trees may need to be protected or require a permit for removal. Many municipal codes require a Certified Arborist to evaluate all or some of the trees on site and write… More
In 1982, I was in China studying landscape architecture and architecture at the University of Nanjing. The central Chinese government had recently announced they would recommit to a nationwide multi-billion tree planting program, originally initiated in 1978. By then the Cultural Revolution was over, Mao Zedong was dead, the Gang of 4 had been jailed, and… More
There is extensive evidence that soil is an amazing tool for improving the quality of water runoff, for reducing peak flow volume, and for storing water for use by the tree and for groundwater recharge in urban settings. We also know that trees in soil are basically “added capacity” – that is, while the soil… More
Landscape architects, architects, and engineers have many tools available to them in the design of healthy long-lived trees, and no single one of them can guarantee the establishment or long-term success of the trees. These tools need to be applied within a larger understanding of general principles of arboriculture, soil, and urban conditions in order… More
Trees and soil have the potential to provide significant stormwater benefits. Trees are also valued for many other benefits, and are already part of virtually all development. They can be integrated even into the densest urban areas – and many cities have tree requirement ordinances, so trees are not only desired, but also mandatory. It… More
Unless you’ve been living under a rock for the past 3 years, you know that California is having a major drought. According to the Institute for Public Policy, the three-year period between 2011 and 2014 were the driest on record since record keeping began in 1895, made worse by record high temperatures in 2014. It’s… More
What’s happening in Texas? As far as we can tell, a lot. The Lone Star state is making some huge investments in sustainable development, including green infrastructure. L. Peter MacDonagh, FASLA – who has visited the state many times over the years, and twice in the last few months to speak about using trees and soils… More
Unmanned Aerial Vehicles (UAVS) – aka drones – 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, studied their applications in urban forest inventories, summarizing his research in… More
Soil. Stormwater. Sustainable Infrastructure.
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