Method for repairing damaged wetland

Abstract

The invention belongs to the technical field of wetland vegetation restoration, and particularly relates to a method for repairing damaged wetland. The method comprises the following steps: (1) controlling pollutant discharge, enhancing urban sewage treatment and improving the sewage treatment rate; (2) desilting and covering the bottom mud: desilting the polluted bottom mud, and covering the polluted bottom mud by constructing engineering development, excavating surface soil and the like; (3) reverting cultivated land to wetland: reverting the cultivated land to wetland and transplanting aquatic plants; (4) vegetation restoration: carrying out ecological restoration on the reed ponds by adopting artificial cultivation technologies such as reed stem cutting or reed root burying and planting for the wetland where the reeds are died; and (5) supplementing water to the wetland: carrying out artificial water supplement on the wetland. According to the method, the way of blocking pollutants from entering the wetland is reduced by controlling the emission of the pollutants, and then the pollution effect of the bottom mud or soil can be reduced by dredging and covering the bottom mud, so that the growth of organisms in the wetland is facilitated.

Description

technical field [0001] The invention belongs to the technical field of wetland vegetation restoration, in particular to a restoration method for damaged wetlands. Background technique [0002] Wetlands generally refer to lowlands covered temporarily or for a long time with a water depth of no more than 2 meters, meadows with more water-filled soil, and coastal areas with a water depth of less than 6 meters at low tide, including various saltwater and freshwater swamps, wet meadows, and lakes , rivers and floodplains, estuary deltas, peatlands, lake and beach flats, riverside depressions or floodplains, wet grasslands, etc., which are one of the three major ecosystems of the earth (ie forests, oceans, wetlands), of which wetlands cover With only 6% of the earth's surface, it provides a living environment for 20% of the known species on the earth, and has irreplaceable ecological functions, so it enjoys the reputation of "the kidney of the earth". [0003] Due to the unstable...

AI Technical Summary

Problems solved by technology

[0003] Due to the unstable water supply of wetlands and the reduction of wetland water inflow, the sustainability of wetland water resources has seriously declined, which in turn has led to the degradation or loss of wetland ecosystem functions. The dry climate and the competition between people and wetlands have made wetlands dry and thirsty. Human economic activities such as human occupation of arable land, environmental pollution of wetlands, fishing, poaching, and reed cutting have caused people to enter and retreat, and people to come and birds to leave, leading to a serious decline in the wetland ecosystem and population ecology