A method for identifying fish spawning grounds in natural waters

A technology for natural waters and spawning grounds, applied in scene recognition, character and pattern recognition, instruments, etc., can solve problems such as time-consuming, laborious and accurate identification of fish spawning grounds, eliminate useless field research and reduce leakage. The effect of checking and misjudgment

Active Publication Date: 2021-03-12
YUNNAN UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In order to solve the time-consuming, laborious and low-accuracy problems of identifying fish spawning grounds in the prior art, the present invention provides a method for identifying fish spawning grounds in natural waters. There are significant differences in the spawning grounds. Fish that lay drifting eggs prefer to spawn and reproduce in the river flow environment with special shapes. It is easy to form the flow rate change stimulus required for fish spawning, and the biologically significant river topography can be identified by remote sensing, which can quickly identify fish spawning grounds, greatly reduce the field workload, and improve the identification of spawning grounds work efficiency

Method used

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  • A method for identifying fish spawning grounds in natural waters
  • A method for identifying fish spawning grounds in natural waters
  • A method for identifying fish spawning grounds in natural waters

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Embodiment 1

[0049] Embodiment 1: as figure 1 Shown, a kind of fish spawning ground identification method in natural waters, concrete steps are as follows:

[0050] (1) Investigate the habitat, spawning environment, food chain type, life cycle, ecological habits, community sex ratio and spawning time of the target fish, determine the necessary environmental conditions for the spawning ground, and establish the necessary environment for the spawning ground of the target fish Conditional element database, in which the necessary environmental conditions for the spawning ground include landform environmental characteristics, plant community composition and hydrological conditions; landform environment characteristics include torrents, backwaters, shoals, deep troughs, gradients and channel narrowness, and plant community composition includes aquatic plants The type and cover of the water, and the hydrological conditions include water level, water temperature, flow rate, turbidity and DO conten...

Embodiment 2

[0082] Embodiment 2: For the identification of the spawning ground in the Lancang River Basin, take the Buyuan River Basin, its primary tributary, as an example;

[0083] Identification methods of fish spawning grounds in natural waters (see Figure 1~3 ),Specific steps are as follows:

[0084] (1) Reconstruction of geographical environment elements of target fish spawning ground

[0085] Protection target and area: This embodiment is applied to the Buyuan River Basin, a tributary of the Lancang River in Yunnan Province. This watershed is the only migration channel for a variety of indigenous fish. The survey shows that there are more than 190 species of fish in this watershed; it has important economic Fishes with scientific value include Chinese knotfish, fork-tailed catfish, Chinese knife catfish, giant carp, silk-tailed catfish, etc.; the watershed mainly involves 4 counties and urban areas (Simao District, Jiangcheng County, Jinghong City, Mengla County), 18 townships w...

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Abstract

The invention relates to a method for identifying fish spawning grounds in natural waters, and belongs to the technical field of fish ecosystem protection. The fish spawning field identification method of the present invention starts with the law of the relationship between environment and organisms in the principle of ecology, and uses geographic information system technology to extract topographic factors with biological significance in fish habitat waters, through weighted calculations and field verification. , to obtain the accurate judgment conclusion of the spawning ground in the target waters. Different from the way in which fish spawning grounds were mostly identified by on-the-spot investigations and field investigations in the past, this invention greatly reduces the work of field investigations, and eliminates a large number of useless field investigations by means of indoor remote sensing analysis; at the same time, remote sensing The analysis can easily achieve the full coverage of the target water area, and is more suitable for the identification of spawning grounds in water areas on a large spatial scale, effectively reducing missed inspections and misjudgments by manual field operations.

Description

technical field [0001] The invention relates to a method for identifying fish spawning grounds in natural waters, and belongs to the technical field of fish ecosystem protection. Background technique [0002] With the increasingly severe interference of human activities on the ecosystem, it has put a huge pressure on the earth's ecosystem, and 60% of the rivers and lakes on the earth have shown a trend of degradation. At the same time, aquatic biodiversity is rapidly declining, with one third of species threatened with extinction. Among them, fish, as an important part of the aquatic ecosystem, have been seriously affected. Water conservancy and hydropower projects have blocked fish migration channels, sewage discharge has caused water quality deterioration, and overfishing has caused rapid declines in fish populations and numbers. In order to restore the number of fish populations, establishing fish protection areas and delineating no-fishing areas are effective ecological...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G16B5/00G06K9/00G06F16/29G06Q50/02
CPCG16B5/00G06F16/29G06Q50/02G06V20/13
Inventor 王海龙薛晨江陆颖何大明袁旭祁昌军杨福平
Owner YUNNAN UNIV
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