Increased susceptibility to insects, diseases, and environmental stress. Death of portion of tree root system. Weakened anchorage and stability. Movement of Equipment - Soil Compaction Amount and character of soil pore space is modified. Amount of water held in the soil available for absorption by tree roots is altered.
Soil aeration is reduced.
The amount of water that infiltrates into and percolates through soil is generally reduced. Same Regrading Land Surface Altered drainage patterns may increase or decrease soil moisture levels. Reduce the soil's moisture-holding capacity. Same Excavating and Trenching Damage the tree's root system. Restrict root growth.