BEGIN:VCALENDAR VERSION:2.0 PRODID:-//jEvents 2.0 for Joomla//EN CALSCALE:GREGORIAN METHOD:PUBLISH BEGIN:VTIMEZONE TZID:America/Los_Angeles X-LIC-LOCATION:America/Los_Angeles BEGIN:DAYLIGHT TZOFFSETFROM:-0800 TZOFFSETTO:-0700 TZNAME:PDT DTSTART:19700308T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0700 TZOFFSETTO:-0800 TZNAME:PST DTSTART:19701101T020000 RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:9fb5feb7b5edd20747d289589f301a75103 CATEGORIES:Webinar SUMMARY:Webinar: The Leading Edge in Trees, Stormwater and Urban Design DESCRIPTION:
This presentation wi ll discuss the academic data behind soil volumes and soil quality standards , as well as implementation strategies and the repercussions of long-term m aintenance. Urban designers don’t have the space to achieve preferred soil volumes, and trees are often shoe- horned into “Amenity Zones” in the share d public right of way. In these tight conditions, there are three options: Custom support systems, Structural soils and Suspended (supported) pavement s.
Urban designers today face a number of soil challenges regarding street tr ees, including the lack of available soil in high-density areas. One of the strategies employed is the Street Tree Soil Volume Mandate, where a develo per is required to provide a certain amount of planting soil per tree.
There are many guidelines whic h stipulate volumes, but there is no regard for soil quality within the reg ulations. Also, volume mandates lag behind the science which stipulates the volumes. The required soil can be used for several complementary goals, be it large tree growth, stormwater bioretention, heat Island reduction or ur ban greening. Regardless of the reason it is used, the resulting inner-city flora will have the added benefit of increasing real-estate value, a goal of most developers.
Why is not soil quality mandated as well? The research is clear, High quality, lo amy soils outperform structural soils. Not only should volumes be required, but soil quality should be codified as well. Those municipalities that are rethinking the vital role trees play in the health of our planet and creat ing rules and recommendations to support them. They promote policies and pr ojects that set trees up for long-term success and environmentally meaningf ul contribution, including soil quality as well as soil volume.
< p class="clearfix">This webcast is hosted by the APA Urba n Design and Preservation Division