| 摘要 |
In urban areas, the trees are exposed to extreme loadings since the surrounding fixed ground covering (slabs or asphalt), which results in a compaction of the sealed ground, extends to the close vicinity of the tree trunk. Only a small, non-sealed zone remains as nourishment area. In the invention, the nourishment area is, surprisingly, extended to the sealed zone by the fixed ground covering being formed by tree-aerating slabs which are formed from an open-pore, water-storing material which is bound in a binding agent as an aggregate. A layer of lava is located beneath the tree-aerating slabs and a substrate layer is located beneath this. The tree-aerating slabs can be used as parking areas for parking vehicles and, at the same time, they ensure sufficient aeration and nutrient supply for the tree. A "biological connection" to the substrate located beneath the tree-aerating slabs is produced through openings, filled with a granulate consisting of open-pore lava in the tree-aerating slabs.
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