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Ecological restoration method for treating eutrophic water body by utilizing Nuphar sinensis

An ecological restoration and eutrophication technology, applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., can solve the problem of impossible automatic restoration of aquatic vegetation, improve restoration efficiency and simplify management , the effect of high economic value

Inactive Publication Date: 2012-08-15
NANJING INST OF GEOGRAPHY & LIMNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of eutrophic lake treatment, due to the lack of provenance and unsuitable environmental conditions such as underwater light and oxygen supply, it is impossible to realize the automatic recovery of aquatic vegetation.

Method used

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  • Ecological restoration method for treating eutrophic water body by utilizing Nuphar sinensis
  • Ecological restoration method for treating eutrophic water body by utilizing Nuphar sinensis
  • Ecological restoration method for treating eutrophic water body by utilizing Nuphar sinensis

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Embodiment 1

[0034] Embodiment 1: The method for ecological restoration of the windward lakeshore zone of a large shallow lake, specifically comprises the following steps:

[0035] (1) Using moso bamboo as a material, construct a wave-dissipating belt on the windward side of the area to be planted with Chinese pineapple grass in the shallow water area of ​​the lakeside zone of the lake. The moso bamboo wave-dissipating belt includes double-layer wave-dissipating bamboo rafts arranged in parallel, distributed according to figure 1 According to the arrangement shown, the height of the moso bamboo above the water surface should be about 30-50 cm. For example, in lakes with large perennial water level fluctuations in summer and autumn, the height above the water surface during the construction of Moso bamboo wave-dissipating belts should be appropriately increased according to the water level fluctuations of the year, at least about 20 cm higher than the average perennial average water level ...

Embodiment 2

[0042] Embodiment 2: the ecological restoration method of city park lake, concrete implementation steps are as follows:

[0043] (1) Habitat conditions of lakeside waters. Select the relatively gentle waterfront zone with a water depth of 10-60cm as the first restoration water area. The basement is relatively well developed, and the thickness of the sediment is greater than 10cm.

[0044] (2) The colonization of Sinensis chinensis. In the first ten days of March, collect healthy underground stems from the waters of P. sinensis, which grows all year round. Use a knife to cut the underground tubers with main buds and divide them into small sections of about 6 cm, or tubers with side buds of about 3 cm. They are used as propagation materials and buried in In the sediment rich in organic matter, the appropriate burial depth is 8 cm. The plant clusters formed after planting are arranged in patches, and the actual distribution of the clusters is arranged according to the actual u...

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Abstract

The invention discloses an ecological restoration method for treating a eutrophic water body by utilizing Nuphar sinensis, which is particularly applied to ecological restoration of city park lakes with landscape requirement on a water area and large-scale eutrophicated shallow water lake lakeside zones. The method comprises the following steps of: adopting the Nuphar sinensis as a pioneer species for restoring aquatic vegetation, adopting a subterraneous stem propagation body or seedling vegetative propagation manner in shallow water areas and / or river bank zones, and field planting the Nuphar sinensis in a patchiness distribution manner; in the next year, utilizing a 'centripetal radiation pressure seedling method' to realize rapid expansion of plant groupings so as to form an annular plant grouping; and planting submerged plants in a restoration area, so that the plant cover degree reaches more than 60 percent finally. Compared with a traditional plant material restoration technology, the method has the characteristics of excellent water quality purification effect, simple management and high economic value, has the advantages of ecological features, sightseeing performance and economical efficiency, and has wide popularization and application prospect.

Description

technical field [0001] The invention relates to a method for water body pollution control and ecological restoration, in particular to an ecological restoration method for treating eutrophic water body by using Pinnaea sinensis. Background technique [0002] Over the past ten years, with the rapid development of industrial and agricultural production in the region and the acceleration of urbanization, the amount of industrial wastewater and domestic sewage discharged into water bodies, such as lakes, has continued to increase, large areas of vegetation in lake water have disappeared, and algae have bloomed in large numbers , the transparency is reduced. It caused the decline of biodiversity and the degradation of the lake ecosystem, which affected the utilization of water resources and the performance of their functions. [0003] The aquatic ecosystem is the result of long-term evolution and development, and has a relatively stable internal structure and coordinated ecologi...

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 古小治陈开宁黄蔚柏翔范成新
Owner NANJING INST OF GEOGRAPHY & LIMNOLOGY
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