Lakeside zone for intercepting and purifying non-point source pollution and construction method thereof

Abstract

The invention provides a lakeside zone for intercepting and purifying non-point source pollution. A first step land, a first depression land, a second step land, a second depression land, a third stepland and a third depression land are sequentially arranged outwards along a lake area, and a flow guide pipe is embedded in the bottom of the third step land; the cross sections of the three stages of step lands are trapezoidal, and the elevations of the three stages of step lands are increased step by step; the cross sections of the first depression land and the second depression land are inverted trapezoids, the cross section of the third depression land is concave, and the elevations of the three stages of depression lands are increased step by step; flood-tolerant emergent aquatic plantsare planted on the first step land, and drought-tolerant emergent aquatic plants are planted on the second step land and the third step land; and floating plants are planted in the first depression land, flooding-resistant emergent aquatic plants are planted in the second depression land, and turf is planted in the third depression land. According to the method, the terrain of the lakeside zone isreconstructed into multiple stages of step lands and depression lands, so that the stagnation time of non-point source pollution on the lakeside zone can be effectively prolonged, the non-point source pollution is prevented from directly entering the lake area, and favorable conditions are created for absorption and purification by aquatic plants in the lakeside zone.

Description

technical field [0001] The invention relates to a lakeside belt for intercepting and purifying non-point source pollution and a construction method thereof, belonging to the technical field of water ecological restoration. Background technique [0002] Lakes are the most important freshwater reservoirs on the earth, and 90% of the available freshwater resources on the surface are stored in lakes. Therefore, lakes are closely related to human production and life, and have important social and ecological functions, such as water diversion and flood control, production and living water sources, aquaculture, sightseeing and tourism, etc. At the same time, some lakes are part of the most biologically diverse wetland ecosystems, providing valuable habitats for a variety of organisms. However, in the past 20 years, with the rapid development of my country's economy, the scale and speed of the development and utilization of lake resources have been greatly enhanced, which has affec...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides a lakeside zone for intercepting and purifying non-point source pollution and its construction method. The ability to intercept non-point source pollution outside the lake water body can also effectively control the eutrophication of the lake water body and prevent the lake from evolving into a turbid water algae ecosystem or the phenomenon of wild growth of aquatic plants

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