Ecological restoration method for lakeside wetland

Abstract

The invention discloses an ecological restoration method for a lakeside wetland. In the method, hygrophilous woody plants are planted in a lakeside zone to construct wetland plant communities. The hygrophilous woody plants comprise hygrophilous arbor and hygrophilous shrub, wherein the hygrophilous arbor comprises willows, metasequoia, ascendens mucronatum, taxodium ascendens brongn and bamboo; the hygrophilous shrub comprises iteaceae and S.integra thrnb; and the plants are planted in the way of shoot cottage or soil ball transplant. The hygrophilous woody plants are perennial plants, have a low growth rate, low biomass, low growth amount and low plant disposal pressure and do not need felling and refloating every year, so that the defects of frequently harvesting and refloating herbal emergent aquatic plant communities every year are overcome, the maintenance and management cost of lake wetland plant communities are reduced, the lakeside depositing rate is lowered, and the secondary pollution hidden danger to lake water bodies is relieved. Compared with the prior art, the method has the characteristics of convenient operation, maintenance and management, low maintenance cost, high ecological benefit, easy popularization and application and the like and can be used for ecological restoration engineering of lake and lakeside bottomlands, swamp marshes and shallow water zones.

Description

technical field [0001] The invention belongs to the technical field of wetland plant construction, and specifically relates to a method for ecological restoration by constructing wet woody plant communities in wetlands such as lakes and lakesides. Background technique [0002] With the accelerated development of industrialization and urbanization and the rapid increase of population, the scope and degree of human use of natural resources continue to expand, resulting in environmental problems such as environmental pollution, sedimentation, etc., which lead to the deterioration of the function and biodiversity of lakes and wetlands. Serious destruction. It is urgent to build and protect a good ecological environment of lakes and wetlands, and people are making unremitting efforts to this end. At present, the method of selectively planting emergent plant communities in the lake-land ecotone is mainly used to restore the ecological environment of the area. This method has the ...

AI Technical Summary

Problems solved by technology

However, since most emergent plants are perennial aquatic herbaceous plants, which have the characteristics of rapid growth and large new biomass (fresh weight 6,000 tons to 15,000 tons / square kilometer), the emergent plant communities that grow in large areas in lake wetlands It will die once every winter. If it is not salvaged and harvested in time, the emergent plant residues will accelerate the deposition rate of the lakeside wetlands, and the decayed and decomposed substances of the plant residues will also cause secondary pollution to the lake water body and cause adverse effects on the lake ecosystem.

At the same time, harvesting and salvaging emergent plants consumes a lot of manpower and material resources every year, which will inevitably increase the government's management and financial burden on lakeside wetlands