THREE-DIMENSIONAL ECOLOGICAL NETWORK FOR SOIL REMEDIATION IN ABANDONED RARE EARTH MINE AREA AND MAINTENANCE METHOD THEREOF

Disclosed is a three-dimensional ecological network for soil remediation in an abandoned rare earth mine area and a maintenance method thereof, belonging to the technical field of ecological remediation of soils in mining wastelands. The ecological network is set up by digging trenches in the surface of soil by manpower, orderly fixing soil fixation units in the trenches, and backfilling the trenches with the soil dug out of such trenches, ensuring that 3/4 of each soil fixation unit is buried in the soil. Each soil fixation unit is set up by fixing a horizontal square frame to the corresponding trench by means of a vertical wooden peg, and placing modified biochar, a carbon-fibre net membrane, grass seeds and saw dust on the horizontal square frame in sequence from bottom to top. The disclosed ecological network and the maintenance method thereof may play an important role in effectively improving the ecological environment degraded extremely due to tailings wasteland in the rare earth mine area and enhancing the treatment effects on ecological destruction and environmental pollution of the mine area caused by the mining of rare earth deposits. Soil in abandoned rare earth mine area Soil 10 fixation unit