WATER PURIFYING CONSTRUCTION METHOD BASED ON L-SHAPED BLOCK WITH POT FOR CONSERVATION OF ECOSYSTEM AND LANDSCAPE IN NATURAL ENVIRONMENT AND FOR COMBINATIONAL USE AS REVETMENT OF LAKE OR RIVER AND FISHING BANK

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method for an L-shaped block with a pot and a construction method for it capable of conserving an ecosystem and a landscape in a natural environment, purifying water, restoring a lake and a river for cultivation of a large-size carp or crucian. ;SOLUTION: Willows naturally growing along a natural riverbank spread their roots deep in the ground and extend the roots in the water for forming a shelf, and fish lives in an excavated hole for breeding. In an ordinary L-shaped block, a pot 15 having a plurality of horizontally long through holes 13 formed for planting the willows is installed in imitation of a ledge according to a water depth, a water quantity and a mean water level, and though the through holes, the roots spread in the water. In the back face part of the L-shaped block, the roots spread in the river ground through a cutout formed according to the dimension of the pot. In preparation for a just planted condition or a dry season, a duct 18 with a proper thickness is installed in a proper position in the ground inside the pot in parallel to the L-shaped block with the pot, and underground water is introduced from the upstream side by means of a pump. Consequently, the willows are rooted to grow for forming the fishing bank, and protection of the ecosystem, purification of water, and conservation of the landscape can be accomplished.;COPYRIGHT: (C)2003,JPO