| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an artificial stratum comprising a plurality of layers, where all the material constituting the respective layers is recycled one so as to contribute to reduction in the burden on the environment. <P>SOLUTION: The artificial stratum 3 is constructed to cultivate plants on the artificial ground, and obtained by laminating an aquifer layer 4 comprising glass foam made of waste glass, a filter layer 5 comprising regenerated fiber of waste paper or waste cloth, and a soil layer 6 comprising earth dug out of a construction site. Material constituting each layer is recycled one. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
