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A recovery method for river submerged plants

A technology of submerged plants and restoration methods, which is applied in the field of restoration of submerged plants in rivers, can solve the problems of rebuilding submerged vegetation that have not been reported, and achieve the effect of improving local environment, obvious benefits, and restoring structure and function

Active Publication Date: 2014-10-29
SOUTH CHINA BOTANICAL GARDEN CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no report on the reconstruction of submerged vegetation in the river

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Determine the site: choose a water body with a transparency of 0.5 to 1.2 meters, a dissolved oxygen of 8.7 to 9.2 mg / L, a pH of 6 to 9, and NH 3 -N0.1~4.1mg / L, total nitrogen (TN) 1.2-5.9mg / L, total phosphorus (TP) 0.1~0.8mg / L, BOD5.3~59.8mg / L, COD Mn 9.9~11.9mg / L, COD Cr 29.3 ~ 42.5mg / L river surge to restore submerged vegetation;

[0017] (2) Cultivation and planting: Select the mother plant of Hydra algae in February, divide it into sections of 6-10 cm each, and propagate the seedlings by cuttings in still water, and take root in 5-10 days. The survival rate is over 95%, and batches of Hydra species can be obtained Seedlings; select the healthy plants of Hydrilla, whose seedling length is 10-15 centimeters, with 3-5 strains as a clump as a planting unit, the seedling planting density is 4-6 clumps per square meter, and the planting period is March. The planting method is to fix the seedlings with clay, and the planting method is natural sinking;

[0018] (3) ...

Embodiment 2

[0022] (1) Determine the site: choose a water body with a transparency of 0.5 to 1.2 meters, a dissolved oxygen of 8.7 to 9.2 mg / L, a pH of 6 to 9, and NH 3 -N0.1~4.1mg / L, total nitrogen (TN) 1.2-5.9mg / L, total phosphorus (TP) 0.1~0.8mg / L, BOD5.3~59.8mg / L, COD Mn 9.9~11.9mg / L, COD Cr 29.3 ~ 42.5mg / L river surge to restore submerged vegetation;

[0023] (2) Cultivation and planting: Select the mother plant of Hydra algae in March, divide it into sections of 6-10 cm each, cut and propagate the seedlings in still water, and take root in 5-10 days. The survival rate is over 95%, and batches of Hydra species can be obtained Seedlings; select healthy plants of Hydrilla, whose seedling length is 10-15 centimeters, with 3-5 strains as a clump as a planting unit, the seedling planting density is 4-6 clumps per square meter, and the planting period is April. The planting method is to fix the seedlings with clay, and the planting method is natural sinking;

[0024] (3) Settling and su...

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Abstract

The invention discloses a method for restoring a river submerged plant. The method is characterized in that the submerged plant is used as a pioneer species, appropriate submerged plant is cultivated in the river, different growth conditions of the submerged plant in the river are controlled, submerged vegetation is reconstructed in the degraded river through appropriate maintenance management technology, and the survival rate of the reconstructed submerged vegetation reaches 60 to 70 percent. The local environment of the river water ecological system is improved by restoring the water plants of the river, the structure and the function of the river ecological system can be restored, the cost is low, simplicity, feasibility, low carbon and environmental friendliness can be realized, the benefit is remarkable, the method is suitable for the restoration engineering of the water vegetation of the polluted river and for the ecological reconstruction engineering of the polluted river water plant diversity and water ecological system.

Description

Technical field: [0001] The invention belongs to the technical field of environmental engineering, and in particular relates to a recovery method for river submerged plants. Background technique: [0002] The quality of urban water environment is an important parameter to measure the living standard of urban residents. In my country, with the continuous improvement of the level of urbanization, the urban water environment is more and more significantly affected by the process of urbanization. Due to the rapid economic development, more and more urban pollutants are discharged into urban rivers, resulting in increasing pollution of urban rivers, seriously affecting the quality of urban water environment and the healthy life of residents. Especially in areas with complex coastal river networks and developed economies, urban rivers have generally lost their ability to purify themselves. How to effectively control rivers with degraded ecological functions and restore a healthy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G33/00C02F3/32
CPCY02A20/402Y02A40/80Y02W10/10
Inventor 熊秉红刘春艳
Owner SOUTH CHINA BOTANICAL GARDEN CHINESE ACADEMY OF SCI
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