CN102907359A - Method for obtaining acoustic evaluation data in artificial fish reefs - Google Patents
Method for obtaining acoustic evaluation data in artificial fish reefs Download PDFInfo
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- CN102907359A CN102907359A CN2012104022551A CN201210402255A CN102907359A CN 102907359 A CN102907359 A CN 102907359A CN 2012104022551 A CN2012104022551 A CN 2012104022551A CN 201210402255 A CN201210402255 A CN 201210402255A CN 102907359 A CN102907359 A CN 102907359A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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Abstract
The invention relates to a method for obtaining acoustic evaluation data in artificial fish reefs. The method comprises the following steps of: designing a drift net, determining a net-casting number, and determining a net-casting time and a net-casting mode; fixing an energy exchanger at a place which is 0.5m below the sea surface at a right ship board of a research ship via a scientific fish finder, recording acoustic mapping data in a range from the seabed to 0.5m under the sea surface and transmitting the data to a computer for the treatment of the acoustic data to obtain the acoustic evaluation data in the artificial fish reefs; then accurately estimating and analyzing propagation and release effects in the artificial fish reefs by combining the sample data of the drift net. With the adoption of acoustic evaluation, the method has the advantages of rapid speed, high accuracy, large coverage, real-time prediction without causing damages to fish resources and the like; the artificial fish reefs and the fish resources are not damaged, but also the resource distribution of the artificial fish reefs can be obtained; and thus accurate and reliable data support is provided for the evaluation of the propagation effect of the artificial fish reefs.
Description
Technical field
The invention belongs to the fisheries stock assessment technical field, particularly relate to the method for a kind of artificial fish shelter district Acoustic assessment data acquisition.
Background technology
To repair and optimize the aquatile habitat in order to improve, for the place such as provide forage to biologies such as fish, breed, grow, reach the purpose of protection, propagation resource and raising fishery harvesting quality, domesticly carried out successively large-scale artificial fish shelter construction.But how reasonably the cultivation effect of artificial fish shelter to be assessed, be a difficult problem always, special aspect the Obtaining Accurate of assessment data.Consider that traditional fisheries stock assessment method (such as the bottom trawl survey method) can not adapt to the needs of artificial fish shelter district fisheries stock assessment, this just requires a kind of faster, more effective assessment mode to remedy even replaces traditional fisheries stock assessment method.How to obtain the resource distribution situation in artificial fish shelter district, be technological difficulties always.
Summary of the invention
Technical problem to be solved by this invention provides under a kind of prerequisite not damaging the artificial fish shelter facility, obtains the method for fisheries stock assessment data, can assess rapidly and accurately artificial Artificial Reef Area of Zhongshan City fishery resources amount, and department provides scientific basis for fisheries management.
The technical solution adopted for the present invention to solve the technical problems is: the method for a kind of artificial fish shelter district Acoustic assessment data acquisition is provided, comprises the following steps:
(1) design flow gill net, the netting gear specification is: principal dimensions is 30m * 4m, and outer layer net size of mesh is that 260mm, inner layer net size of mesh are 50mm, and the net bottom end adds the lead sinker, pastes the end to guarantee netting gear;
(2) determine the quantity of casting net: establishing the artificial fish shelter section length is s, and the quantity of then casting net n is:
Be that n is no more than
Maximum integer;
(3) determine the time of casting net: cast net the previous day of acoustic survey, the second day hauling, initial time to concluding time of casting net is 24 hours, and the biological species that obtains fishery harvesting sample in the drift net of every top forms sample data long with the body of each fishery harvesting kind, that body weight forms drift net;
(4) netting gear is thrown in mode: it is parallel with the investigation course line of carrying out research vessel that netting gear is thrown in mode;
(5) data acquisition: utilize the science fish finder, transducer is fixed on lower 0.5 meter, ship side sea, research vessel right side, record the acoustics Image Data in the 0.5m scope of seabed to sea level, and this transfer of data is carried out acoustic data to the computer process, obtain artificial fish shelter district Acoustic assessment data; In conjunction with the sample data of drift net, get final product accurate estimate analysis artificial fish shelter district enhancement effect again.
Investigation course line in the described step (4) is the geographic shape according to the survey area, two kinds of investigation course line employing parallel cutting surfaces or "the" shapes, the "the" shape course line is used for the living resources investigation that littoral line is long and narrow zonal distribution or the distribution of rotary island small island, and parallel cutting surfaces then is used for the most marine sites except the investigation marine site is complicated especially.
The speed of a ship or plane of described research vessel is controlled between the 4-8kn/h.
The nylon monofilament that described drift net employing sealike colour is 0.5-1mm is worked out.
Described lead sinker weight is 250-500g, and every interval 60-100cm arranges one.
Beneficial effect
The present invention utilizes that Acoustic assessment has quick and precisely, wide coverage, forecast in time and don't the advantage such as the infringement stock of fish, the mode of utilizing the science fish finder to walk boat in the artificial fish shelter district is obtained acoustic data, is combined in the catches sample data that artificial fish shelter district three laminating underflow gill nets obtain again artificial fish shelter district enhancement effect is made accurate estimate analysis.This method is neither destroyed artificial fish shelter and fishery resources, can obtain again the resource distribution situation in artificial fish shelter district, can be that the cultivation effect evaluation of artificial fish shelter district provides accurately, reliable data supporting.
Description of drawings
Fig. 1 is that the present invention investigates the enforcement schematic diagram.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
As shown in Figure 1, investigate the previous day, research vessel is from the seashore 1, and at the drift net 3 of artificial fish shelter district 2 interior input respective numbers, the concrete specification of drift net: principal dimensions is 30m * 4m, outer layer net size of mesh is that 260mm, inner layer net size of mesh are 50mm, the netting twine material is the nylon monofilament, and sealike colour is 0.5-1mm, and the net bottom end adds sinker, sinker weight is the lead of 250-500g, and every interval 60-100cm arranges one.If the artificial fish shelter section length is s, the quantity of then casting net n is:
Be that n is no more than
Maximum integer; Determine the time of casting net: cast net the previous day of acoustic survey, the second day hauling, initial time to concluding time of casting net is 24 hours, and the biological species that obtains fishery harvesting sample in the drift net of every top forms sample data long with the body of each fishery harvesting kind, that body weight forms drift net; The mode of casting net is according to walking air route line 4(parallel cutting surfaces with Investigation and Design) or the 5("the" shape) parallel direction throw in, and the record cast net the time.
During investigation, high-ranking officers' science fish finder just in time is installed on the right side ship side of research vessel, and transducer places 0.5m place under the sea.Be communicated with power supply, open acoustic data acquisition module on the portable computer, according to the features of terrain in artificial fish shelter district, select air route line 4 or 5 pairs of investigation marine sites to carry out continuous data acquisition, record the acoustics Image Data in the 0.5m scope of seabed to sea level, the investigation speed of a ship or plane is 4-8kn/h.Hauling after drift net 3 was cast net 24 hours, the biological species that obtains fishery harvesting sample in the drift net of every top forms, body weight composition data long with the body of each fishery harvesting kind.
Utilize above method, obtain artificial fish shelter district 2 Acoustic assessment data, again in conjunction with the sample data of drift net 3, can accurate estimate analysis artificial fish shelter district 2 enhancement effects.
Claims (5)
1. the method for an artificial fish shelter district Acoustic assessment data acquisition comprises the following steps:
(1) design flow gill net, the netting gear specification is: principal dimensions is 30m * 4m, and outer layer net size of mesh is that 260mm, inner layer net size of mesh are 50mm, and the net bottom end adds the lead sinker, pastes the end to guarantee netting gear;
(2) determine the quantity of casting net: establishing the artificial fish shelter section length is s, and the quantity of then casting net n is:
[.] is bracket function, and namely n is no more than
Maximum integer;
(3) determine the time of casting net: cast net the previous day of acoustic survey, the second day hauling, initial time to concluding time of casting net is 24 hours, and the biological species that obtains fishery harvesting sample in the drift net of every top forms sample data long with the body of each fishery harvesting kind, that body weight forms drift net;
(4) netting gear is thrown in mode: it is parallel with the investigation course line of carrying out research vessel that netting gear is thrown in mode;
(5) data acquisition: utilize the science fish finder, transducer is fixed on lower 0.5 meter, ship side sea, research vessel right side, record the acoustics Image Data in the 0.5m scope of seabed to sea level, and this transfer of data is carried out acoustic data to the computer process, obtain artificial fish shelter district Acoustic assessment data; In conjunction with the sample data of drift net, get final product accurate estimate analysis artificial fish shelter district enhancement effect again.
2. the method for a kind of artificial fish shelter according to claim 1 district Acoustic assessment data acquisition, it is characterized in that: the investigation course line in the described step (4) is the geographic shape according to the survey area, two kinds of investigation course line employing parallel cutting surfaces or "the" shapes, the "the" shape course line is used for the living resources investigation that littoral line is long and narrow zonal distribution or the distribution of rotary island small island, and parallel cutting surfaces then is used for the most marine sites except the investigation marine site is complicated especially.
3. the method for a kind of artificial fish shelter according to claim 1 and 2 district Acoustic assessment data acquisition, it is characterized in that: the speed of a ship or plane of described research vessel is controlled between the 4-8kn/h.
4. the method for a kind of artificial fish shelter according to claim 1 district Acoustic assessment data acquisition is characterized in that: it is that the nylon monofilament of 0.5-1mm is worked out that described drift net adopts sealike colour.
5. the method for a kind of artificial fish shelter according to claim 1 district Acoustic assessment data acquisition, it is characterized in that: described lead sinker weight is 250-500g, every interval 60-100cm arranges one.
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| CN2012104022551A CN102907359A (en) | 2012-10-19 | 2012-10-19 | Method for obtaining acoustic evaluation data in artificial fish reefs |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104268786A (en) * | 2014-09-24 | 2015-01-07 | 中国科学院水生生物研究所 | Reservoir fish resource acoustics investigation method |
| CN106251055A (en) * | 2016-07-26 | 2016-12-21 | 中国水产科学研究院珠江水产研究所 | A kind of fish pass crosses the Acoustic assessment method of fish effect |
| CN114493680A (en) * | 2022-01-06 | 2022-05-13 | 中国水产科学研究院南海水产研究所 | Fishery resource statistical method and system based on spunlace investigation |
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| KR20040048046A (en) * | 2002-12-02 | 2004-06-07 | 세기건설 주식회사 | artificial fish-breeding structure maded in poly-hedron cells |
| CN101664012A (en) * | 2009-09-30 | 2010-03-10 | 上海海洋大学 | Method for designing and optimizing fish reef on basis of quantizing factor of trapping effect of artificial fish reef |
| CN102636821A (en) * | 2012-04-20 | 2012-08-15 | 上海海洋大学 | Investigation method for quantitative research of conservation range of rocky reef habitat |
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2012
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20040048046A (en) * | 2002-12-02 | 2004-06-07 | 세기건설 주식회사 | artificial fish-breeding structure maded in poly-hedron cells |
| CN101664012A (en) * | 2009-09-30 | 2010-03-10 | 上海海洋大学 | Method for designing and optimizing fish reef on basis of quantizing factor of trapping effect of artificial fish reef |
| CN102636821A (en) * | 2012-04-20 | 2012-08-15 | 上海海洋大学 | Investigation method for quantitative research of conservation range of rocky reef habitat |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104268786A (en) * | 2014-09-24 | 2015-01-07 | 中国科学院水生生物研究所 | Reservoir fish resource acoustics investigation method |
| CN106251055A (en) * | 2016-07-26 | 2016-12-21 | 中国水产科学研究院珠江水产研究所 | A kind of fish pass crosses the Acoustic assessment method of fish effect |
| CN114493680A (en) * | 2022-01-06 | 2022-05-13 | 中国水产科学研究院南海水产研究所 | Fishery resource statistical method and system based on spunlace investigation |
| CN114493680B (en) * | 2022-01-06 | 2024-05-03 | 中国水产科学研究院南海水产研究所 | Fishery resource statistical method and system based on stream stab net investigation |
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Application publication date: 20130206 |