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Scientists can determine past changes in the sun’s magnetic field by analyzing tree rings. Now German scientists have shown that tree rings in petrified trunks from fossilized forests can be used to reveal dat about the sun’s cycles from eons ago. Data obtained from the petrified forest of Chemnitz, which was buried by a volcanic erruption 290 million years ago, showed tree ring growth patterns similar to those caused by modern sunspot activity. Below is an artist’s impression of what the Chemnitz forest looked like.
In this edition: Part 2 on the science of tree planting (see especially the info on removing excess soil to expose the root collar before planting), spotlight on the yellow birch tree, info on Arbor Day and state grants, and more.
To view the full text of the bylaw (Article 16, Tree Protection and Preservation), visit the Tree Bylaw page of this site or the Town website page “Title V – Regulations Upon the Use of Private Property, ” where you can view the full text of the bylaw.
A new study shows that trees in the Boston region grow faster and store more carbon as biomass the closer they are to developed areas, even when the trees are growing in patchy areas of woods. A study just published in Proceedings of the National Academy of Science shows that forest fragments in New England may sequester much more carbon dioxide than previously predicted.
In this edition: A comprehensive article on evaluating the health and quality of balled-and-burlapped trees before you plant them,a short report on the 2016 gypsy moth outbreak, a profile of the Dawn Redwood, a report on current state-wide drought conditions, and details on applying for a 2017 DCR Urban and Community Forestry Challenge Grant, and more.
A boxy 18-story wooden building going up in Vancouver, Canada, will be the world’s tallest wooden building. It turns out that engineered wood is strong and supple enough to sustain at least a small skyscraper, and apparently the large engineered beams resist fire well. For complete details and photographs, see here.