Method for investigating lake benthophyte

A technology of submerged plants and lakes, applied in the re-radiation of sound waves, image data processing, and utilization of re-radiation, etc., can solve the problem that the data cannot accurately reflect the actual situation, etc., and achieve the improvement of investigation efficiency and result accuracy, light weight, Small size effect

Inactive Publication Date: 2018-02-23
JIANGSU WATER CONSERVANCY SCI RES INST
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Problems solved by technology

However, the detection and investigation of the distribution and community structure of submerged plants in lakes are often restricted by conditions such as environment, manpower, material resources, and time. The data obtained by traditional investigation methods cannot accurately reflect the actual situation.

Method used

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  • Method for investigating lake benthophyte
  • Method for investigating lake benthophyte
  • Method for investigating lake benthophyte

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Embodiment 1

[0029] Embodiment 1: a method for investigating submerged plants in lakes, the devices used to realize the method mainly include: (a) dual-frequency identification sonar 2 (standard type); (b) GPS positioning system 3; (c) capable of detecting A computer 5 for processing the image obtained by the dual-frequency identification sonar 2; (d) a ship 1 as a carrier.

[0030] The method for investigating lake submerged plants is realized through the following steps:

[0031] 1. Use dual-frequency recognition sonar 2 to collect and generate images of the lake's internal survey area, and calculate the coverage of submerged plants in the survey area based on the images.

[0032] (1) Determine the detection point and investigation time

[0033] ①Aiming at the designated survey area in the lake to be investigated, set several detection points in the survey area. The setting of the detection points follows the layered random distribution principle in the GIS method, and takes into accou...

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Abstract

The invention relates to a method for investigating lake benthophyte. The method comprises the steps of collecting and generating an image of the measuring area of a lake by using a double-frequency identification sonar, calculating the coverage degree of the benthophyte in the measuring area according to the image, conducting quadrat measurement for the measuring area to obtain the types of the benthophyte, the proportion of different types of benthophyte and the fresh weight density in the quadrat, obtaining the biomass of the benthophyte of a certain type in the measuring area by the totalarea of the measuring area * the coverage degree of the benthophyte in the measuring area * the fresh weight density in the quadrat * the proportion of the benthophyte of the type in the quadrat basedon the coverage degree of the benthophyte in the measuring area and the types of the benthophyte, the proportion of different types of benthophyte and the fresh weight density in the quadrat, and then obtaining the biomass of different types of benthophyte in the measuring area. The lake ecological investigation efficiency and the result accuracy can be improved. The method can be widely appliedto the investigation, treatment, and repair of the lake ecological environment.

Description

technical field [0001] The invention belongs to the field of lake water environment investigation, and relates to a method for investigating submerged plants in a lake, in particular to a method for investigating submerged plants by using dual-frequency identification sonar. Background technique [0002] Since the 1980s, the point and non-point source pollution brought about by the rapid social and economic development has led to a sharp decline in lake water quality and a reduction in the self-regulating function of the lake ecosystem. As an important regulator of the lake ecosystem, submerged plants in lakes play an important role in fixing sediment, preventing sediment resuspension, and purifying water quality. However, with the process of eutrophication, submerged plants in lakes will decline or even disappear. The gradual demise of submerged plants broke the original ecological balance, and caused a series of ecological and environmental problems such as the deteriorat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S15/02G01S15/89G01S7/52G06T7/136G06T7/12
CPCG01S7/52001G01S15/89G06T2207/20152G06T2207/30188G06T7/12G06T7/136G01S15/86
Inventor 赵钢钱钧徐毅王茂枚周广宇石银涛蔡军舒实陈楠罗青姜果
Owner JIANGSU WATER CONSERVANCY SCI RES INST
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