The invention discloses a method for biologically remediating a
water body and soil comprehensively utilizing resources. The method comprises the steps: (1), determining main pollutants in a selected
land area or
water body area; (2), selecting to
plant and / or cultivate fast-growing herbaceous plants, fast-growing alga, trees, bushes, fungi or microorganisms with high remediation efficiency in the selected
land area or
water body area; (3), harvesting or collecting the fast-growing herbaceous plants and the fast-growing alga after growing to reach a suitable height or size; (4), concentratedly
processing the harvested or collected fast-growing herbaceous plants and the fast-growing alga, and comprehensively utilizing to prevent the pollutants from dispersing; (5), remediating an
eutrophic water body by adopting an artificial
floating island; (6), remediating a heavy
metal polluted water body by confining floating plants; (7), repairing
cadmium and
zinc polluted soil by mixed-
cropping festuca arundinacea and bluegrass; (8), remediating polycyclic aromatic hydrocarbons (PAHs) polluted soil by mixed-
cropping alfalfa and italian ryegrass; and (9), extracting and recovering silver from silver-containing
wastewater remediation plants.