METHOD FOR FORMING SUBMERGED PLANT CLUSTER BY USING ARTIFICIAL FLOATING ISLAND FOR SUBMERGED PLANT

摘要

PPROBLEM TO BE SOLVED: To perform the recovery of submerged plant clusters in an installed water area by protecting an artificial island for the submerged plants from animals feeding the submerged plants. PSOLUTION: This artificial island 10 for the submerged plants is constituted by a float 40 and frame 31, etc., so as to adjust its water depth up and down. The planting basin 20 is installed in the frame 31. A net 51 for preventing fishes, etc., feeding the submerged plants in the submerged part and a net 52 for preventing the disturbance of the submerged plants by waterfowls in its upper direction are installed. The submerged plants are grown initially in a shallow depth having a good light transmittance since the water has a poor transparency, and as they grow, the transparency is improved and gradually water depth is increased. In such a state, the seeds, etc., of the submerged plants are scattered at the bottom of the water so as to form clusters in surrounding area, and then the artificial floating island 10 for the submerged plants is removed. PCOPYRIGHT: (C)2009,JPO&INPIT