After the initial planting to fill the gaps, if we assume that 10 trees are replaced each year, the
population slowly continues to diversify. At year 5 the Mall inventory would be 88% American elm, 7%
Group A trees, 5% Group B trees.
Continuing to assume that 10 trees are being replaced each year, at year 10 the Mall inventory would
be 79% American elm, 11% Group A trees, 9% Group B trees.
Continuing to assume that 10 trees are being replaced each year, at year 20 the Mall inventory would
be 62% American elm, 20% Group A trees, 18% Group B trees.
38 CityTREES
