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Reconstruction method of submerged plant communities in shallow lakes

A submerged plant, eutrophication technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. structural regulation and other issues, to achieve the effect of increasing biomass and biodiversity, improving water transparency, and improving biomass and biodiversity

Active Publication Date: 2016-07-20
JIANGSU JIANGDA ECOLOGICAL SCI & TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the community construction of submerged plants is considered, it does not explain the site conditions such as water quality and biological communities for community construction, nor does it consider the regulation of the community structure due to environmental changes, and manage it after the community is stable.

Method used

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  • Reconstruction method of submerged plant communities in shallow lakes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] (1) Investigate the environmental characteristics of the lake to be restored, the water quality is inferior to Class V (0.2mg / L3 3 ), the transparency is only 30cm, put silver carp (50g / m 3 ) and spinosa clam (200g / m 2 ), increase the transparency of the water body to more than one meter in the mid-water area, and the transparency of the deep-water area: water depth > 2:5, and catch grass carp at the same time to prevent it from destroying the growth of submerged plants. Shallow water area adopts the cuttage method to plant thorny grass in spring (20 plants / m 2 ), in summer and autumn, plant Heliconia spicaculata (5 buds / cluster, 30 clumps / m 2 ), belacan (5 buds / cluster, 30 clumps / m 2 ) and black algae (10 buds / clump, 25 clumps / m 2 ), together with water chestnut (4 plants / m 2 ) and water lilies (1 pot / m 2 ), planting Iris (25 plants / m 2 ), Trichosanthes (25 plants / m 2 ) and rushes (25 plants / m 2 ) and other emergent plants. In the middle water area, the cuttag...

Embodiment 2

[0090] (1) Investigate the environmental characteristics of the lake to be restored, the water quality is inferior to Class V (0.2mg / L3 3 ), the transparency is only 20cm, put silver carp (50g / m 3 ) and Anodonta dorsalis (200g / m 2 ), increase the transparency of the water body to more than one meter in the mid-water area, and the transparency of the deep-water area: water depth > 2:5, and catch grass carp at the same time to prevent it from destroying the growth of submerged plants. Shallow water area adopts the cuttage method to plant thorny grass in spring (20 plants / m 2 ), in summer and autumn, plant Heliconia spicaculata (5 buds / cluster, 30 clumps / m 2 ), belacan (5 buds / cluster, 30 clumps / m 2 ) and black algae (10 buds / clump, 25 clumps / m 2 ), served with waterweed (1 pot / m 2 ), water and land ecotone planting Zizania (20 plants / m 2 ) and Sagittarius (20 plants / m 2 ) and other emergent plants. In the middle water area, the mud ball method is used to plant P. spicacul...

Embodiment 3

[0094] (1) Investigate the environmental characteristics of the lake to be restored. The water quality is inferior to Class V (0.2mg / L3 3 ), the transparency is only 25cm, put silver carp (50g / m 3 ) and spinosa clam (200g / m 2 ), increase the transparency of the water body to more than one meter in the mid-water area, and the transparency of the deep-water area: water depth > 2:5, and catch grass carp at the same time to prevent it from destroying the growth of submerged plants. Shallow water area adopts the cuttage method to plant thorny grass in spring (20 plants / m 2 ), in summer and autumn, plant Heliconia spicaculata (5 buds / cluster, 30 clumps / m 2 ), belacan (5 buds / cluster, 30 clumps / m 2 ) and black algae (10 buds / clump, 25 clumps / m 2 ), together with Pingpeng grass (12 plants / m 2 ) and water turtle (16 plants / m 2 ), Acorus calamus (5-8 buds / cluster, 9 clumps / m 2 ), Alisma (25 plants / m 2 ) and rushes (25 plants / m 2 ) and other emergent plants. In the middle water ...

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Abstract

The invention discloses a reconstruction method of submerged plant communities in shallow lakes. The method comprises the steps of field investigation, plant community construction, plant community regulation and control and maintenance and management. According to site conditions comprising water quality, topography and community composition investigated in field, firstly lakes to be restored are partitioned according to topographic conditions, such as water depth and the like; then suitable submerged plant species, planting methods and planting time are selected according to environment conditions of all zones; community construction is performed; manual regulation and control and management on the plants through modes of adding, replanting and submerged plant replacing, so that the plants can maintain certain biomass and biodiversity; finally a stable submerged plant community is formed. The method is simple and easy to operate, and has good application value.

Description

technical field [0001] The invention belongs to the field of ecological restoration and relates to a model for rebuilding submerged plant communities in eutrophic shallow lakes. Background technique [0002] As the main primary producers, submerged plants play an irreplaceable role in aquatic ecosystems. Submerged plants can absorb nutrients such as nitrogen and phosphorus in the water body, and have important ecological value for maintaining the lake ecosystem and controlling lake eutrophication; submerged plants not only affect the composition and composition of fish, plankton, and benthic animals in the water distribution, and can play a role in eliminating waves and purifying water quality. As an important ecological restoration measure, the restoration and reconstruction of submerged plants is considered to be an effective way to control lake eutrophication. However, in field practice, it is often difficult for submerged plants to survive in large areas or form stable...

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCC02F3/32Y02W10/10
Inventor 韩翠敏凌小君林超张红星程花毕雪娟张艳晴
Owner JIANGSU JIANGDA ECOLOGICAL SCI & TECHCO
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