A single minimum tree crown cover value between 10 and 30 per cent; and A single minimum land area value between 0.05 and 1 hectare; and A single minimum tree height value between 2 and 5 metres.
10%至30%之间的单一最低限度树冠值；和 05至1公顷之间的单一最低限度土地面积；和 2至5米之间的单一最低限度树高值。