Debrief with Dr Greg McPherson
Dr Greg McPherson, project leader for the United States Department of Agriculture (USDA), Centre for Urban Forest Research spoke at the Symposium and Conference about putting a dollar value on trees and green-life in terms of the environmental benefits they provide. We ask him about his recent experience in Australia.
“It is diverse and beautiful,” Dr McPherson says of the Australian landscape. “From eucalyptus forests studded with tree ferns to rolling pasture land, coral reefs and sparkling cities, I was taken by all that I saw.”
The American sees the Australian nursery and garden industry as vital and healthy. “Although water restrictions have adversely impacted on the health of some landscapes, the industry seems to be using this crisis to increase its profile and make itself more relevant to its customers.”
However, he says given the magnitude of the industry it appears to him that educational opportunities are lacking, particularly at university level. “I sensed widespread interest in gardening and urban greening, but under investment in horticultural research and development.”
The ‘tree-hugger’ believes urban forests in Canberra and Melbourne seem poised for transformation. “Trees that have nurtured generations of residents are ending their life cycle. Frequently, drought stress is hastening their demise. Managing this transition is a challenge that has economic, social and ecological dimensions.”
While this may seem to be a crisis, he says it can also be a touchstone for increasing public awareness in green infrastructure. “Efficient harvesting of rainfall, improving soil resources, optimising shade effects, maximising carbon sequestration, and increasing age and species diversity will be hallmarks of the future of urban forest. Ultimately, increased investment in urban greening will make Australian cities healthier, safer, and better place to live."
The Symposium was a unique experience for Dr McPherson, and he says it opened his eyes to the potential for influencing policy through a well-planned symposium and media events. “It looks like the Australian nursery and garden industry is positioned to realise important gains from this effort. It is definitely something we in the U.S can learn from.”
Dr Greg McPherson speaking at the 2009 Urban GreenScapes Symposium