Method and apparatus for quantitatively regulating and controlling biomass of submerged plant

Abstract

The invention provides a method and a device which can adjust and control quantitatively the growing height and the distance to the water level of lake submerged plant as well as control quantitatively the biomass of the submerged plant. Generally, when performing the planting of float grass, one layer of pot array and auxiliary devices which can automatically consume the float grass is arranged on the required height in the water body, mesh bags provided with suitable meshes are hung on the pots to cause the stem leaves of the float grass to enter, but fishes can not automatically escape, each pot is internally provided with aquatic animals which use the float grass as bait, the aquatic animals can consume the stem leaves of the float grass higher than the height, and the biological balance between the grass and the aquatic animals is achieved through the capture and the putting-in of quantitative fishes and crabs, etc., thereby the purpose of controlling the float grass to the pointed height automatically without being pruned manually or mechanically, and the control area is enlarged by the pot array. The technology of the device can be applied to the stabilized manual regulation and control of a restored biological system of aquatic vegetation in the lake, the riverway, and the landscape water bodies.

Description

Technical field: [0001] The invention relates to a method and a device for quantitatively regulating the growth height of submerged plants in lakes, quantitatively controlling the biomass of submerged plants, and preventing excessive growth of aquatic plants. The invention belongs to the technical field of lake ecological engineering and ecological control. Background technique: [0002] The eutrophication of lakes has become a major global water environment problem. Algae blooms lead to the reduction of water transparency, dissolved oxygen, and the death of aquatic organisms. This not only seriously deteriorates water quality, but also destroys the balance and self-regulation ability of the ecosystem. The area of ​​aquatic plants in large lakes is shrinking, the self-purification and regulation ability of the water body is reduced, and many harmful algae will produce and release toxins into the water body. Toxins not only poison aquatic organisms and affect fishery producti...

AI Technical Summary

Problems solved by technology

Although the above-mentioned major improvements have been made in clay algae removal technology, the previous clay algae removal technology has a common defect: the decay and decomposition of algae that settle to the bottom of the water consume a large amount of oxygen, which can cause anaerobic water bottom, and some pollutants gradually Re-released from the sediment into the water body, causing recurrence of algae blooms

However, the key problem with this method is that it is difficult to quantitatively control fish and grass, too many fish can lead to complete destruction of submerged vegetation, the biomass may be reduced to zero, and it may damage grass roots and affect the reproduction of aquatic plants. In some places, it is very difficult to catch fish, and only some of them can be taken out, but not all the fish can be taken out, so it is difficult to accurately control the balance between grass and fish. Moreover, if there are too many fish, they will eat all the aquatic plants, damage the roots, and affect the reproduction of aquatic plants. If it disappears, the effect of ecological restoration will be completely lost, and even the water body will become eutrophic again. Therefore, the traditional fish stocking method is subject to many restrictions in the application of weed control. Currently, the disclosed technology does not accurately control the submerged plants in large-scale ecological restoration. Fish and grass control technology that is safe, easy to implement, and does not damage the roots of submerged plants controlled at a certain amount

Images