A natural sea area sea cucumber biomass investigation method based on real-time video observation

Abstract

The application discloses a natural sea area sea cucumber biomass investigation method based on real-time video observation, and relates to the technical field of biomass investigation and statistics, and comprises the following steps: determining a sea area to be investigated; setting four stations S1, S2, S3 and S4 in the investigated sea area, wherein the stations S1, S2 and S3 are distributed in a regular triangle, and the station S4 is located at the geometric center of the regular triangle; each station is provided with a first section and a second section, and a plurality of sea cucumber biomass observation points arranged on the first section and the second section; and the sea cucumber biomass of the investigated sea area is calculated according to the number of sea cucumbers observed by the sea cucumber biomass observation points. The application designs a scientific natural sea area sea cucumber biomass investigation method with the help of underwater real-time video monitoring equipment, and can more scientifically reflect the real biomass of sea cucumbers in the investigated sea area.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of biomass survey statistics, in particular to a natural sea area sea cucumber biomass survey method based on real-time video observation. BACKGROUND

[0002] Sea cucumbers feed on organic detritus on the seabed and play an important role in purifying the marine environment, and are important maintainers of the marine ecosystem. Sea cucumbers are also one of the eight treasures of the sea and have important edible and medicinal values. With the development of society, the demand for marine food consumption by people has increased, and on the other hand, due to overfishing and other human activities, the wild sea cucumber resources have been severely depleted. In recent years, with the increasing emphasis on ecological civilization construction in the whole society, the ecological function of sea cucumbers has been valued, and the research on sea cucumbers, especially the tropical sea cucumbers with rich resources, has become a hot topic.

[0003] Investigating the biomass of sea cucumber populations in the sea area is a necessary means to assess the amount of sea cucumber resources and the effect of ecological aquaculture, but for a long time, there has been no research on the method of sea cucumber biomass survey, and no scientific method for natural sea area sea cucumber biomass survey has been formed. In the actual operation of sea cucumber biomass survey, the diving belt survey method is usually used, that is, the diver dives into the survey sea area, sets a section on the seabed, places a sampling frame at both ends of the section, calculates the amount of sea cucumber in the sampling frame, and performs statistics. Due to the particularity of the seabed environment, the labor intensity of manual diving section investigation is large, and the scope of investigation is also very limited. On the other hand, sea cucumbers are benthic animals, and sea cucumbers usually hide in the crevices of reefs during the day and cannot be easily observed. Sea cucumbers come out at night, and it is not easy to distinguish in the dark environment at night. In addition, if night diving is chosen, the personal safety risk of the diver is extremely great. Therefore, the existing method of sea cucumber biomass survey cannot objectively reflect the real sea cucumber resource biomass in the survey sea area, and it is urgent to develop a scientific method for natural sea area sea cucumber biomass survey, and the development of modern marine equipment lays a foundation for realizing this method innovation. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application provides a sea cucumber biomass survey method based on real-time video observation. This method uses underwater real-time video monitoring equipment to design a scientific method for natural sea area sea cucumber biomass survey.

[0005] To achieve the above purpose, the present application can adopt the following technical solutions:

[0006] A natural sea area sea cucumber biomass survey method, comprising the following steps:

[0007] Determine the sea area to be investigated;

[0008] The investigation sea area is set with four stations S1, S2, S3 and S4, wherein the stations S1, S2 and S3 are distributed in a regular triangle, and the station S4 is at the geometric center of the regular triangle;

[0009] Each station is provided with a first section, a second section, and a plurality of sea cucumber biomass observation points arranged on the first section and the second section;

[0010] The sea cucumber biomass of the investigation sea area is calculated according to the number of sea cucumbers observed at the sea cucumber biomass observation points.

[0011] The natural sea area sea cucumber biomass investigation method as described above, further, the first section is arranged perpendicular to the coastline direction, and one sea cucumber biomass observation point is arranged every 10-20 meters on the first section.

[0012] The natural sea area sea cucumber biomass investigation method as described above, further, the second section is arranged perpendicular to the direction of the first section, and one sea cucumber biomass observation point is arranged every 10-20 meters on the second section.

[0013] The natural sea area sea cucumber biomass investigation method as described above, further, the sea cucumber biomass of the first section and the second section of each station is calculated, and the sea cucumber biomass of each station is obtained according to the sea cucumber biomass of the first section and the second section.

[0014] The natural sea area sea cucumber biomass investigation method as described above, further, the sea cucumber biomass of the investigation sea area is obtained according to the sea cucumber biomass of each station.

[0015] The natural sea area sea cucumber biomass investigation method as described above, further, the first section of the station is provided with 30 sea cucumber biomass observation points, the number of sea cucumbers observed at each sea cucumber biomass observation point is respectively recorded as x1-x30, the second section is provided with 30 sea cucumber biomass observation points, the number of sea cucumbers observed at each sea cucumber biomass observation point is respectively recorded as y1-y30, and the monitoring area of each sea cucumber biomass observation point is 0.8m 2 Then:

[0016] The sea cucumber biomass of the first section of the station Unit: head / ha;

[0017] The sea cucumber biomass of the second section of the station Unit: head / ha;

[0018] The sea cucumber biomass of the station Unit: head / ha

[0019] The natural sea area sea cucumber biomass survey method as described above, further, the sea cucumber biomasses S of the four stations S1, station S2, station S3 and station S4 are taken as an arithmetic mean to obtain the sea cucumber biomass BM of the surveyed sea area, unit: head / acre.

[0020] The natural sea area sea cucumber biomass survey method as described above, further, still includes a seabed video positioning tripod for being arranged at the sea cucumber biomass observation point, the seabed video positioning tripod includes:

[0021] A wave shield, a camera is fixed in the wave shield through a fixing ring;

[0022] A support rod is rotationally connected to the lower part of the wave shield.

[0023] The natural sea area sea cucumber biomass survey method as described above, further, still includes a lifting ring and a cable, the lifting ring is arranged at the upper end of the wave shield, and the cable is used for being connected with the lifting ring.

[0024] The natural sea area sea area sea cucumber biomass survey method as described above, further, the wave shield is provided with a notch, and the notch is used for the data transmission line of the camera to pass out.

[0025] Compared with the prior art, the natural sea area sea cucumber biomass survey method has the beneficial effects that:

[0026] (1) The underwater video monitoring equipment is used to replace manual diving, the underwater working time is greatly prolonged, more observation point data can be obtained in a short time, and therefore the working efficiency of the sea cucumber biomass survey is improved;

[0027] (2) Based on the habit of the sea cucumber that hides during the day and comes out at night, the underwater video monitoring equipment with infrared function is used to replace manual diving, high-intensity sea cucumber biomass survey can be carried out at night, and therefore the survey result can more scientifically and accurately reflect the real sea cucumber biomass of the sea area;

[0028] (3) The underwater video monitoring equipment is used to replace manual diving, the labor intensity is greatly reduced, and the personal safety risk brought by diving, especially night diving, is avoided;

[0029] (4) The fixed field of view area is formed by adjusting the height of the camera and the support rod of the seabed video fixing tripod, the fixed sample frame area of the diving sample belt survey method is replaced, the cumbersome underwater sample frame moving work and the deviation caused by the artificial selection of the sample frame area can be avoided;

[0030] (5) Each piece of surveyed sea area includes 4 stations, 8 sections and up to 240 observation points, the stations, sections and observation points are reasonably distributed, and the real biomass of the sea cucumber in the surveyed sea area can be more scientifically reflected. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0032] Figure 1 It is a schematic diagram of the underwater video positioning tripod in the embodiments of the present application. In the diagram, 1 is a wave shield, 2 is a fixing ring, 3 is a supporting rod, 4 is a lifting ring, 5 is a cable, and 6 is a notch.

[0033] Figure 2 It is a schematic diagram of the station design for natural sea area sea cucumber biomass survey in the embodiments of the present application. In the diagram, stations S1, S2 and S3 are in a regular triangle distribution, and station S4 is at the geometric center of the regular triangle formed by S1, S2 and S3.

[0034] Figure 3 It is a schematic diagram of the section position and observation point for sea cucumber biomass survey in the embodiments of the present application. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely in the embodiments of the present application in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the scope of protection of the present application.

[0036] Embodiment:

[0037] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0038] It should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited. In addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] Referring to Figures 1 to 3 , the present application designs a scientific natural sea area sea cucumber biomass survey method by means of underwater real-time video monitoring equipment.

[0041] Referring to Figure 1 , Figure 1 The present application shows a schematic diagram of a seabed video positioning tripod, and the underwater video monitoring equipment and use in the embodiments of the present application will be described below in combination with the drawings in the embodiments of the present application.

[0042] A sea cucumber biomass survey method based on real-time video observation adopts a commercially available underwater video monitoring equipment (Hakushu, China) as a survey equipment. The camera of the equipment has an infrared function and can clearly image under the seabed in a dark night environment.

[0043] In order to adapt to the sea wave environment and maintain the stability of the monitoring picture, the camera of the underwater video monitoring equipment is hung on the fixing ring 2 in the wave-proof cover 1 of the seabed video positioning tripod Figure 1 ) The inclination of the supporting rod 3 of the seabed video positioning tripod is adjusted by using a screw 7, and the hanging height of the camera in the wave-proof cover 1 is adjusted, so that the monitoring area of the camera reaches 0.8m2. The cable 5 is tied to the lifting ring 4, and when used, the seabed video positioning tripod can be sunk into the seabed at the predetermined position through the cable 5. The data transmission line of the camera extends out of the wave-proof cover 1 through the gap 6 of the wave-proof cover, and is connected with the host of the underwater video monitoring equipment.

[0044] Referring to Figure 2 and Figure 3 , Figure 2 Figure 1 shows a schematic diagram of the station design for natural sea area biomass survey of sea cucumber according to an embodiment of the present application, Figure 3 Figure 2 shows a schematic diagram of the cross-section position and observation point for sea cucumber biomass survey according to an embodiment of the present application. The following will describe the method for investigating the biomass of sea cucumber in natural sea area using underwater video monitoring equipment according to an embodiment of the present application, taking the example of a certain sea area of the sea cucumber in Daya Bay, Shenzhen.

[0045] Four stations S1, S2, S3 and S4 are set in the survey sea area Figure 2 The stations S1, S2 and S3 are in a regular triangle distribution, and the station S4 is at the geometric center of the regular triangle formed by S1, S2 and S3. The straight-line distance between S1, S2 and S3 is determined according to actual needs. The cross-section setting and the sea cucumber biomass observation point setting of each station are shown in Figure 3 Perpendicular to the direction of the coastline, cross-section 1 is set, and along cross-section 1, every 10-20 meters, a positioning observation point is set by stably placing the underwater video positioning tripod to the positioning observation point on the seabed, the number of sea cucumbers in each field of view is observed through the display screen of the underwater video monitoring equipment, and is recorded. There are 30 positioning observation points along cross-section 1, and the number of sea cucumbers observed at each positioning observation point is recorded as x1-x30. Perpendicular to the direction of cross-section 1, cross-section 2 is set, and along cross-section 1, every 10-20 meters, a positioning observation point is set by stably placing the underwater video positioning tripod to the positioning observation point on the seabed, the number of sea cucumbers in each field of view is observed through the display screen of the underwater video monitoring equipment, and is recorded. There are 30 positioning observation points along cross-section 1, and the number of sea cucumbers observed at each positioning observation point is recorded as y1-y30.

[0046] Station S1 cross-section 1 sea cucumber biomass

[0047] Station S1 cross-section 2 sea cucumber biomass

[0048] Station S1 sea cucumber biomass

[0049] The above method is used to perform the statistics of the sea cucumber biomass S2 of the station S2.

[0050] The above method is used to perform the statistics of the sea cucumber biomass S3 of the station S3.

[0051] The above method is used to perform the statistics of the sea cucumber biomass S4 of the station S4.

[0052] Survey sea area sea cucumber biomass

[0053] The number of sea cucumber observed at each section and each positioning observation point is shown in Table 1.

[0054] Table 1: The number of sea cucumber observed at each section and each positioning observation point (unit: head)

[0055]

[0056]

[0057] The biomass of the sea cucumber in a certain sea area of the Daya Bay in Shenzhen is calculated according to the above formula.

[0058] The biomass of the sea cucumber in the section 1 of the station S1

[0059] The biomass of the sea cucumber in the section 2 of the station S1

[0060] The biomass of the sea cucumber in the station S1

[0061] The biomass of the sea cucumber in the station S2 is calculated according to the above method, and the biomass of the sea cucumber in the station S2 is obtained.

[0062] The biomass of the sea cucumber in the station S3 is calculated according to the above method, and the biomass of the sea cucumber in the station S3 is obtained.

[0063] The biomass of the sea cucumber in the station S4 is calculated according to the above method, and the biomass of the sea cucumber in the station S4 is obtained.

[0064] The biomass of the sea cucumber in the survey sea area

[0065] Therefore, according to the natural sea area sea cucumber biomass survey method based on real-time video observation, the biomass of the sea cucumber in a certain sea area of the Daya Bay in Shenzhen is calculated to be about 360 heads per hectare.

[0066] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0067] The above embodiments are only for the purpose of illustrating the technical concepts and characteristics of the present application, and the purpose is to enable those of ordinary skill in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the essence of the present application should be covered within the protection scope of the present application.

Claims

1. A method for investigating the biomass of natural sea area sea cucumber, characterized in that, The method comprises the following steps: determining a survey sea area; setting four stations S1, S2, S3 and S4 in the survey sea area, wherein the stations S1, S2 and S3 are distributed in a regular triangle, and the station S4 is at the geometric center of the regular triangle; each station is provided with a first section, a second section, and a plurality of sea cucumber biomass observation points arranged on the first section and the second section, the first section is arranged vertically to the direction of the coastline, and one sea cucumber biomass observation point is arranged every 10-20 meters on the first section; the second section is arranged vertically to the direction of the first section, and one sea cucumber biomass observation point is arranged every 10-20 meters on the second section; the sea cucumber biomass observation point is provided with a seabed video positioning tripod, the seabed video positioning tripod comprises a wave shield, a camera is fixed in the wave shield through a fixed ring; a support rod is rotatably connected to the lower part of the wave shield; a lifting ring is arranged at the upper end of the wave shield, and a cable is used to connect the lifting ring; calculating the sea cucumber biomass of the survey sea area according to the number of sea cucumbers observed at the sea cucumber biomass observation points, wherein the sea cucumber biomass of the first section and the second section of each station is calculated, the sea cucumber biomass of each station is obtained according to the sea cucumber biomass of the first section and the second section, and the sea cucumber biomass of the survey sea area is obtained according to the sea cucumber biomass of each station.

2. The method for investigating the biomass of natural sea area sea cucumber according to claim 1, characterized in that, The first section of the station is provided with 30 biomass observation points of sea cucumber, and the number of sea cucumber observed at each biomass observation point is respectively recorded as x1-x30. The second section is provided with 30 biomass observation points of sea cucumber, and the number of sea cucumber observed at each biomass observation point is respectively recorded as y1-y30. The monitoring area of each biomass observation point of sea cucumber is 0.8m 2 Then: The first section of the station position sea cucumber biomass SX= , unit head / hectare; The second section of the station position sea cucumber biomass SY = , unit head / hectare; The biomass of sea cucumber S at the station is , unit: head / ha.

3. The method for investigating the biomass of natural sea area sea cucumber according to claim 2, characterized in that, The sea cucumber biomasses S of the four stations S1, S2, S3 and S4 are taken as an arithmetic mean to obtain the sea cucumber biomass BM of the survey sea area, and the unit is head / acre.

4. The method for investigating the biomass of natural sea area sea cucumber according to claim 1, characterized in that, The wave shield is provided with a notch for the data transmission line of the camera to pass out.

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