A method for water quality purification and submerged vegetation restoration of water level controllable eutrophic water body

Abstract

The invention provides a method for water purification and submerged vegetation restoration of water level controllable eutrophic water. The method includes the steps of (1) survey on basic information of to-be-restored eutrophic water; (2) aquatic plant selection: selecting myriophyllum spicatum, hydrilla varticillata, ceratophyllum demersum, vallisneria natans, vallisneria spinulosa, vallisneria denseserrulata, potamogeton wrightii morong and potamogeton maackianus; (3) vegetation restoration method: adopting a water level control and plant disposition combined method to carry out submerged vegetation restoration and water purification; (4) maintenance and management: after restoration of aquatic vegetation, performing simple control in interspecific competition of submerged plants to assure water quality and biodiversity of submerged plants. Through the water level control and plant disposition combined method for submerged vegetation restoration and water purification, the problems of slow restoration of submerged vegetation and low survival rate of submerged plants in the prior art are solved. The problem that weak submerged plants are low in survival rate and even die due to interspecific competition and the like when grown at the same time in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of ecological restoration engineering, and in particular relates to a method for water purification of eutrophic water bodies with controllable water level and restoration of submerged vegetation. Background technique [0002] In recent years, due to the serious eutrophication of water bodies, the submerged vegetation zone has also lost and degraded rapidly, resulting in the collapse of ecosystems in many water bodies and almost losing their self-purification function. [0003] Therefore, in order to solve the problem of water eutrophication and restore the water ecosystem and self-purification function, it is first necessary to restore the submerged vegetation of the water body. The restoration of submerged vegetation is affected by many factors such as water transparency, water level fluctuations, dissolved oxygen, water quality, and substrate. Especially in eutrophic water bodies, many submerged plants c...

AI Technical Summary

Problems solved by technology

Especially in eutrophic water bodies, many submerged plants cannot survive because they cannot tolerate high concentrations of nutrients

[0004] At present, there is no good technology and method for the rapid restoration of submerged vegetation in water bodies in my country. The main restoration method is to plant submerged plants by using various planting devices such as planting cups and planting beds and their improved devices. High, the recovery effect is not good

In the actual planting process, due to the lack of attention to plant configuration and plant pollution resistance, some submerged plants often die under the stress of high concentrations of nutrients during the recovery process, or are eliminated due to inferior interspecific competition.