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Educational Sessions

Tree Biology

Can Stressed Trees Become a Carbon Source?
Tuesday, 11 August 2015
1:50 PM — 2:30 PM
Osceola Ballroom D
A, M, Bs

The pattern of urban development may be the key to determine the amount of CO2 emissions and the ability of cities to reduce them. CO2 sequestration and storage are not only affected by the amount of green areas and trees, but also by their stress tolerance and maintenance needs. Choosing the right tree in the right place can have important consequences on CO2 sequestration and storage and a wrong choice might convert trees in a net carbon source. Trees, especially when stressed, emit a variety of substances many of which are reactive volatile organic compounds (VOCs). These compounds disperse into the air and, when mixed with certain toxins, can contribute to air pollution.

Management choices related to species composition and tree maintenance activities can also directly affect the overall carbon benefits from urban forests. Therefore planting trees requires special consideration regarding potential adverse factors to ensure the health of the trees, including a proper watering regime and adequate space.

Limited water resources can be a big issue in the future, especially in the drier areas where trees will continue to provide many benefits only if they are chosen according to the present and future conditions and are properly maintained.

In this presentation results from some research projects carried out to determine how different tree species under stressful conditions differ in net carbon benefits will be shown and some suggestions for tree selection strategies that optimize the net impact of urban forestry on reducing atmospheric carbon dioxide will be given.

Presenter Information

    • Francesco Ferrini
      From 1990 he has published more than 220 scientific and technical papers in Italian and in English in international referred and nationwide journals. He has given more than 100 talks in several international and national congresses. He cares the Faceblog “Arboriculture and Urban Forestry” In 2009 he has been the recipient of the Fabio Rizzi Award for his constant commitment in the research and extension service in the field of Plant Nursery Science and of Urban Arboriculture and for his continuous activity with researchers and contractors all over the world. In 2010 he has been the recipient of L.C. Chadwick Award for Arboricultural Research Recipient: The L.C. Chadwick award is granted to individuals to recognize research that has contributed valuable information to arboriculture. Past-President of the Italian Society of Arboriculture November 2014-November 2015 Chair of IASHK (International Arboriculture Summit - Hong Kong) Board of Advisors Senior Director of the scientific magazine Advances in Horticultural Sciences Associate Editor of the Arboriculture & Urban Forestry journal.

Presentation file information