Method for restoring lake water ecology by utilizing natural ecological botanical system

Abstract

The invention relates to a method for restoring lake water ecology by utilizing a natural ecological botanical system, which comprises the following steps of: planting bulrush and Nymphoides peltatum in March; culturing zizania caduciflora seedlings in March; raising trapa seedlings in a nursery in April; arranging soft isolations and fences at the periphery of a trapa planting area from March to April, transplanting the cultured trapa seedlings behind the two ways of fences and soft isolations, and planting the cultured zizania caduciflora seedlings serving as a plant wave dissipating band from one way of soft isolation adjacent to the shoreside closely to a water body shoal band of which the depth of water is 1 meter; harvesting water chestnuts from September to October; planting eel grass in October; and removing leaf stems of the bulrush, the Nymphoides peltatum, the zizania caduciflora and the trapa from a water body in December. After the water body is restored by the method of the invention for one year, the coverage rate of aquatic plants is about 95 percent, the blue algae reduction rate of the water body is over 84 percent, the transparency of the water body is improved to between 1 and 1.2 meters, and water quality in a preventing and control area reaches III water standard from the original V water standard.

Description

technical field [0001] The invention relates to the field of lake water purification, in particular to a method for restoring lake water ecology by utilizing an original ecological plant system. Background technique [0002] As we all know, Wuxi City, Jiangsu Province is close to Taihu Lake. It is beautiful because of the water, and it is rich because of the water. The beauty of Taihu Lake lies in the water of Taihu Lake. Times have changed, and now Wuxi is facing problems of water safety, water pollution, and water ecology. The eutrophication of Taihu Lake, the deterioration of the water quality of the river network, and water shortages have become problems that restrict the sustainable development of Wuxi's social economy and have been strongly reported by the masses. Wuxi City has invested heavily in various measures to protect water resources and prevent water pollution, and have achieved remarkable results. The water environment in some water areas has been improved to...

AI Technical Summary

Problems solved by technology

Some species have strong adaptability, fecundity, and vitality, and rapidly expand outwards to become invasive species, thus changing the local plant landscape. Medium-sized plants can grow and develop well, even in the polluted water environment, they can reproduce well, seize the ecological niche, crowd out other plants, lead to the simplification of species in the community, break the chain of aquatic plants that were originally in a balanced state, and cause primary producers, Such as cyanobacteria and other large-scale reproduction, a large number of low-end ecological niches are seized, and the further deterioration of the water environment is accelerated.