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Construction for Landscape Architecture by Jamie Liversedge, Robert Holden

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Protection of trees

Existing trees should be surveyed at the beginning of works to ensure that they are healthy. If in doubt, consult an arboriculturist (a consultant tree surgeon), who may need to “core” the tree by boring into its center and extracting a small diameter cross-section to determine if there is significant rot. Generally, it is wiser to aim to keep younger trees rather than mature or old specimens, which are less able to adapt to the changes in groundwater and environment consequent on development happening nearby. Too often, large mature trees become stag-headed (their branches die back) when they are retained in the middle of a parking lot.

How to keep a tree. At the Ecocenter at Hoge Veluwe National Park, The Netherlands, the ...

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