Construction method of near-natural estuary wetland capable of uniformly distributing water

Abstract

The invention relates to a construction method of a near-natural estuary wetland capable of uniformly distributing water. The method comprises the following steps: investigating the incoming water condition of a region; calculating the amount of sewage, and measuring and calculating the amount of pollutants; determining an estuary wetland process; determining the wetland scale; perfecting a waterdistribution system of the estuary wetland according to the category of the estuary wetland; protecting the original landform of the estuary wetland area, and properly creating multi-habitat conditions of different water depths; reserving original vegetation characteristics, and properly introducing indigenous species; and gradually recovering the natural estuary delta. According to the invention,according to different estuary wetland categories, in combination with the sewage amount and the pollutant amount of the designated area, the wetland process is selected, the wetland scale is determined, the water distribution system of the estuary wetland is perfected, natural multi-stage water distribution is adopted in the area with the relatively low terrain around the estuary, and incoming water uniformly enters the wetland in an immersion flow, seepage flow, overflow flow or horizontal plug flow manner, so that the wetland purification effect can be exerted, and the natural attributes of the wetland are preserved to the greatest extent.

Description

technical field [0001] The invention relates to a water environment treatment method, in particular to a method for constructing a near-natural estuary wetland with uniform water distribution. Background technique [0002] As a channel connecting the upstream water body and the lake, the river channel spreads outward before entering the lake, and the kinetic energy is significantly weakened, so that the sediment is accumulated to form a flat land protruding toward the lake and water body. The shape is often triangular in shape, so Known as an estuary delta. Estuarine deltas often also form wetlands due to their ecotones with water bodies. However, for the sake of flood control in my country in recent decades, it is very common to change rivers from bends to straight, and to harden river banks with "three-sided light". Due to the transformation of the "three-sided light" of the river bank, the river delta directly enters the water body and lake. The shape of the original es...

AI Technical Summary

Problems solved by technology

However, due to insufficient human intervention measures in restored natural wetlands, water distribution and water distribution systems are often imperfect, resulting in insufficient exchange between water bodies and wetlands, as well as between wetlands and upstream catchment water, which affects the environmental functions of wetlands.

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