Natural water area fish spawning site identification method

A technology for natural waters and spawning grounds, applied in scene recognition, character and pattern recognition, structured data retrieval, etc., can solve problems such as time-consuming, labor-intensive and accurate identification of fish spawning grounds, and eliminate useless field research. , reduce the effect of missed inspection and misjudgment

Active Publication Date: 2020-07-31
YUNNAN UNIV
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  • Application Information

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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 r

Method used

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  • Natural water area fish spawning site identification method
  • Natural water area fish spawning site identification method
  • Natural water area fish spawning site identification method

Examples

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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 natural water area fish spawning site identification method, and belongs to the technical field of fish ecosystem protection. According to the fish spawning site identification method, starting from an environment and organism mutual relation rule in an ecological principle, topographic factors with biological significance in a fish habitat water area are extracted by utilizing a geographic information system technology, and an accurate identification conclusion of a target water area spawning site is obtained in a weighted calculation and on-site verification mode.Different from a conventional mode that fish spawning site identification mostly depends on field investigation and field investigation, the method greatly reduces the field investigation work, and eliminates a large amount of field useless investigation through an indoor remote sensing analysis means. Meanwhile, the remote sensing analysis can conveniently realize the full coverage of the targetwater area, is more suitable for the identification of the spawning site of the large-space-scale water area, and effectively reduces the missed inspection and misjudgment of artificial field work.

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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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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