Got Trees?

Zoning Practice — July 2006

By Christopher Duerksen, Molly Mowery, AICP, Michele McGlyn


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Tree protection legislation has burgeoned at the local level, with hundreds of communities adopting tree conservation ordinances over the last decade.

These regulations have evolved well beyond the first generation of ordinances that focused on preserving large specimen trees into more modern approaches, such as requiring the protection of a percentage of the existing tree canopy on a site. Some local governments are even contemplating tying tree protection to a reduction in carbon dioxide emissions from new developments as part of their programs to address global warming and climate change.

This issue of Zoning Practice discusses recent trends in local tree protection, including methods and rationale for tree valuation, legal protections against takings claims, regulatory approaches to preservation, and cutting-edge tree protection programs.


Page Count
Date Published
July 1, 2006
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American Planning Association

About the Authors

Christopher Duerksen

Molly Mowery, AICP
Molly Mowery, AICP serves as the Executive Director of the Community Wildfire Planning Center and is also the founder of Wildfire Planning International. Throughout her career Ms. Mowery has successfully launched and managed national wildfire programs, designed national trainings to educate land use planners and fire professionals, and coauthored numerous publications on the wildland-urban interface (WUI). She is currently working with California state fire agencies to support the update of fire safe regulations and develop wildfire planning trainings. She also led the research and development of the Governor's Office of Planning and Research WUI Planning Best Practices Guide. Ms. Mowery holds a Bachelor of Arts degree from Naropa University and a Master in City Planning degree from the Massachusetts Institute of Technology. She is the chair-elect of APA's Hazard Mitigation and Disaster Recovery division.

Michele McGlyn