Submerged plant planting structural layer for ecological waterscape and application thereof

Abstract

The invention relates to a submerged plant planting structural layer for an ecological waterscape and application thereof, belonging to the technical field of ecological environment engineering. The submerged plant planting structural layer provided by the invention comprises an original soil layer, a ceramsite layer, a geotextile, a raw soil layer and a fine sand layer which are sequentially arranged from bottom to top. According to the submerged plant planting structural layer provided by the invention, the release speed of inorganic or organic matters such as N and P in soil into a water body can be effectively reduced by utilizing a slow release principle, so the inorganic or organic matters such as N and P are locked or stored in the planting substrate structural layer; and through layer-by-layer blocking via the ceramsite layer, the geotextile, the sand layer and the like, the path of upward release and floating of tiny particles and suspended colloids in lower-layer soil is basically blocked, problems in the prior art are effectively solved, the transparency of a water body is guaranteed, and normal growth of submerged plants is maintained.

Description

technical field [0001] The invention relates to a submerged plant planting structure layer of an ecological waterscape and its application, belonging to the technical field of ecological environment engineering. Background technique [0002] In recent years, with the rapid development of my country's economy and the continuous improvement of urbanization level, a large amount of nitrogen, phosphorus and other pollutants produced in the process lie in the soil and flow into the water body, leading to the deterioration of the water environment and becoming more and more serious. Due to the eutrophication of the water body, the aquatic vegetation gradually declines and decreases, especially the submerged plants. Submerged plants play an important role in the aquatic ecosystem. They can consume a large amount of nitrogen and phosphorus in the water body, reduce the degree of eutrophication, prevent the growth of algae, improve the transparency of the water body, and have an impo...

AI Technical Summary

Problems solved by technology

The Chinese patent with the patent application number 201510412786.2 provides a formula for planting substrates for submerged plants, including raw soil, gravel, and coconut peat, which are mixed in a certain proportion. The mixed substrate described in this patent basically does not contain humus, There are very few nutrients, which cannot meet the normal growth of submerged plants. As a result, the nutrients required for the growth of submerged plants basically come from outside the planting substrate, and it is also exposed that during the restoration and treatment of nutrient water bodies, it is easy to appear due to eutrophication of water bodies. algae blooms, causing further deterioration of the water body

The Chinese patent with the patent application number 201710345351.X provides a planting substrate for submerged plants and has a repairing effect on the water environment. The planting substrate described in the patent is composed of raw soil, steel slag, rice husk, ceramsite, and reed stalks. It is mixed in a certain proportion to replace the traditional soil planting and provide a reliable growth environment substrate for submerged plants. However, the rice husk, ceramsite, and reed stalks in the planting substrate are light substances, which are easy to separate from the planting substrate and become Floating water may cause certain pollution to the water body and at the same time block the effect of sunlight shining on the bottom, and also face the problem of algae growth due to eutrophication of the water body when dealing with nutrient water bodies

Existing published patented technologies may be applicable to the restoration and treatment of lightly trophic water bodies, but cannot be directly used for the construction and restoration of ecological waterscapes

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