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“Extreme Care Needed Around Large Trees” As Posted on Thursday, March 3, 2011 by canterburyearthquake The February 22 earthquake and aftershocks have made many large trees unstable around Christchurch. People are urged to take extreme care around large trees, which may have suffered damage to their root systems, and could fall over as a result [...]

Earthquakes can affect trees by way of impacting soil stability, adding contaminants to air & water, and by way of energy transfer from ground based seismic waves (shaking that humans feel) up & through tree trunks. Soil liquefaction occurs when soil movement is strong enough to cause water that is underground (in an aquifer, for [...]