The survival of urban trees depends critically on the health of the roots. Roots supply water and nutrients to the shoots, and get back sugar and other compounds they need to live.
Roots also store food, synthesize hormones, and provide support.
When something cuts the roots, stops them from growing, or prevents them from breathing , it causes damage and threatens the life of the tree. Damage to the root system can often be detected from discoloration, reduced size, or death of part or all of the tree s crown. Loss of support. When the big buttress roots are cut close to the tree, the tree has no support on that side and is prone to windfall. Loss of water.