Method for determining target water area submerged plant recovery area

Abstract

The invention discloses a method for determining a target water area submerged plant recovery area. The method includes the steps of (1) determining sampling points of a target water area, and measuring data including the water body depths, the ignition losses and the different-gradient water depth illumination intensities, (2) obtaining attenuation coefficients K of photosynthetic effective radiation of the sampling points, (3) calculating submerged plant population light compensation depths HC of the sampling points, (4) determining an assessment criteria of submerged plant recovery, wherein LOI serves as the ignition losses, and Qi serves as specific values of the submerged plant population light compensation depths to the water body depths; (5) making thematic maps of the LOI vectors and the Qi vectors, and (6) overlaying the thematic maps through a space analysis module of a geographic information system to obtain nine combinations. By means of the method, the submerged plant population recovery area has specific boundaries, and the operability is high; the recovery area has the step performance, a proper area can be preferentially recovered, and a transition area is then recovered after the conditions such as the transparency and bottom mud are met.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a method for determining the restoration area of ​​submerged plants in target waters. Background technique [0002] The problem of water eutrophication is becoming more and more serious in our country. The restoration and reconstruction of water ecological environment is one of the important ways to control lake eutrophication, and the restoration and reconstruction of aquatic plants, especially submerged plants, is the key to the improvement and stability of water quality. As primary producers, submerged plants play an important role in aquatic ecosystems and are also an important part of aquatic ecosystems. When submerged plants are abundant, the "underwater forest" constructed by them can not only effectively increase the space ecological niche, provide shelter, inhibit biological and abiotic suspended matter, improve the conditions of underwater light and dis...

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Problems solved by technology

[0004] Regarding the determination of the submerged plant restoration project area, there is no relevant literature at home and abroad. There are only some studies on the growth conditions of submerged plants. For example, only when the light compensation depth of the water body is greater than the depth of the water body can submerged plants survive. However, no comprehensive judgment has been found in China so far. Method for submerged plants restoration project implementation area

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