Method for regulating and controlling submerged plant community structure and maintaining biomass balance by using cnaphalocrocis pinnatifida

Abstract

The invention discloses a method for maintaining biomass balance of submerged plants in a grass type lake by utilizing ecological regulation and control. The method comprises the following steps that A, the condition of a lake to be restored is investigated; B, pioneer species canopy type submerged plants of the submerged plants and group species rosette type submerged plants of the submerged plants are planted; C, the biomass of the pioneer species is regulated and controlled by utilizing cnaphalocrocis pinnatifida, specifically, the growth of the rosette type submerged plants is promoted by utilizing the advantage of inhibiting the growth of the canopy type submerged plants by utilizing the cnaphalocrocis pinnatifida, and the stability of the biomass is maintained; and D, the number of the cnaphalocrocis pinnatifida is regulated and controlled through biological manipulation, small carnivorous culter fish is put to prey the cnaphalocrocis pinnatifida to reduce the number of the cnaphalocrocis pinnatifida or remove the cnaphalocrocis pinnatifida, and ecological balance is maintained. The method is low in cost, simple and convenient to operate, non-toxic and harmless, the population structure and number of the submerged plants can be regulated and controlled, the transparency of the water body is kept in a clear water type state, and the technical problems of high control cost and poor landscape effect after the eutrophicated lake submerged vegetation is recovered can be solved.

Description

technical field [0001] The invention belongs to the technical field of water body ecological restoration, and more specifically relates to a canopy-type submerged plant of the pioneer species and a rosette type of the group-constructing species, which are used for the reconstruction of submerged plants in the treatment of eutrophic lakes by regulating and controlling the eutrophic lake. The competitive relationship among submerged plants makes the rosette submerged plants have an advantage in the competition and maintains the balance of the submerged plant biomass in grass-type lakes. Background technique [0002] In recent years, with the rapid development of my country's economy, under the interference of natural and human factors, a large amount of nutrient salts have been input into lakes, which has increased the nutrient elements such as carbon, nitrogen, and phosphorus in water bodies, resulting in the water bodies of urban lakes being mostly composed of sedimentation. ...

AI Technical Summary

Problems solved by technology

The method is low in cost, easy to operate, non-toxic and harmless, and can regulate the competition relationship between canopy-type and rosette-type submerged plant populations and maintain the balance of biomass, so that the transparency of the water body can be maintained at the state of clear water, and it solves the problem of the restoration of submerged vegetation in lakes. Technical problems of high post-control costs and poor landscape effects

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