| 摘要 |
<p>A tree root-control barrier system formed by a plurality of panels (10) having vertical ridges (11) thereon. The panels are embedded in the earth between a sidewalk (26) and a tree (28) whose roots (29) are to be controlled. Upper and lower cross-members (22, 23) are provided on the panels at their upper edges, and perform various functions including sun protection, protection against lawn trimmers, protection against the growing of tree roots above the ground, and others.</p> |
