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High water table restricts root depth

high water table

Root are restricted to the surface layers (see center photo) when the water table (see right photo) is close to the soil surface. Trees can fall over as they grow larger if all roots are close to the soil surface because there are few sinker roots. Sinker roots grow down in well aerated soil and serve to anchor the tree (see bottom illustration).

Trees growing with very shallow roots are very sensitive to death and falling over when impacted by construction activities. See: more information on root depth. flat roots

restricted root growth illustration