Construction method of landscape lake water ecosystem

Abstract

The invention relates to a construction method of a landscape lake water ecosystem. The construction method comprises the following steps: 1, landscape lake region division: dividing the interior of alandscape lake into a fixed side slope ecosystem, an aquatic animal system and a lake bottom aquatic plant ecosystem according to different ecological effects; 2, landscape lake water pretreatment: carrying out tedding and quicklime sterilization and disinfection methods on lake bottom soil; 3, constructing of a side slope ecological system: planting emergent aquatic plants at a shallow water side slope of the landscape lake; 4, constructing of a lake bottom aquatic plant ecological system: planting submerged plants in a central deep water area of the landscape lake; 5, constructing of an aquatic animal system: after the aquatic plants are planted, putting filter-feeding fishes and other filter-feeding benthic animals into lake water; and 6, later maintenance: harvesting the aquatic plants and catching the aquatic animals regularly. The method has the effects that the survival rate of the aquatic plants is increased, and the self-repairing capacity and the self-purifying capacity of awater body are enhanced.

Description

technical field [0001] The invention relates to the technical field of water environment pollution control, in particular to a method for constructing a landscape lake ecosystem. Background technique [0002] Landscape lakes are generally artificial lakes, which are a kind of lake dug out by people in a planned and purposeful manner, and are produced in an unnatural environment. The landscape lake provides the city with a suitable landscape atmosphere and is conducive to improving the quality of the urban environment. [0003] However, as an open system, the landscape lake will inevitably be challenged by various pollution factors, mainly including the following aspects: 1. Atmospheric dry and wet deposition: the air pollution is becoming more and more serious, and the nutrients in the atmosphere will be accompanied by dust and rain. Into the lake, so that nutrients such as COD, nitrogen, phosphorus, etc. are brought into the water to dissolve, affecting the water quality o...

AI Technical Summary

Problems solved by technology

[0003] However, as an open system, the landscape lake will inevitably be challenged by various pollution factors, mainly including the following aspects: 1. Atmospheric dry and wet deposition: the air pollution is becoming more and more serious, and the nutrients in the atmosphere will be accompanied by dust and rain. Into the lake, so that nutrients such as COD, nitrogen, phosphorus, etc. are brought into the water to dissolve, affecting the water quality of the landscape lake; 2. Rainwater surface runoff: Rainwater is easy to mix with dust and pollutants in the air during the falling process, and rainwater on the road surface Various dust, impurities, garbage, oil and other pollutants are fused in the process of flowing and scouring in places such as roofs, green spaces, and ditch slopes. After the rainwater collects, it flows into the lake along the surface runoff, and it is easy to pollute the garbage deposited on the roadside. 3. The impact of the surrounding environment: the influx of landscaping pesticides and fertilizers in the surrounding environment, as well as various activities such as surrounding residents and restaurants may pollute the water body and affect the water quality of the lake; 4 , Endogenous pollution: after the decomposition of aquatic animal feces and dead bodies of animals and plants in the lake, organic matter enters the water body and easily affects the water quality of the lake; 5. Natural factors: the landscape lake has poor water fluidity, small water area, easy pollution, and The environmental capacity is small, the water body has low self-purification ability or lacks the characteristics of self-purification function. If no artificial intervention is carried out to implement ecological purification measures, it is very easy to cause the increase of suspended solids and turbidity in the water system, the increase of general bacteria and E. coli content, and the algae A large number of reproduction, eventually leading to black and smelly water and other phenomena