CN103907575B - A kind of planktonic intercept type collecting method - Google Patents
A kind of planktonic intercept type collecting method Download PDFInfo
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- CN103907575B CN103907575B CN201410165989.1A CN201410165989A CN103907575B CN 103907575 B CN103907575 B CN 103907575B CN 201410165989 A CN201410165989 A CN 201410165989A CN 103907575 B CN103907575 B CN 103907575B
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- net
- catch net
- planktonic
- dictyosome
- water
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Abstract
The invention discloses a kind of planktonic intercept type collecting method, wherein can tackle planktonic catch net by making, and wait to tackle in the rivers section of sampling by adopting the thing such as float, dead lever to be deployed in, it is made to tackle the plankton floated on the surface in water body, adopt collecting net to be collected after interception again, the plankton collected can be obtained.This collecting method is simple, and draws materials and be extensively easy to replace, and easy to implement, the planktonic A wide selection of colours and designs of collection, is applicable to planktonic collections in rivers section and samples.
Description
Technical field
the present invention relates to a kind of planktonic intercept type collecting method.
Background technology
when carrying out ecotope and detecting investigation, need to carry out investigation and sampling to the plankton sample in water body, to understand the plankton situation existed in water body, as detected one section of entozoal quantity of rivers to measure the water quality situation in this waters.At present, the collection that planktonic collecting method generally utilizes plankton net to carry out, drags by hand and gathers, so just cause labour intensity large, length consuming time in gatherer process; And pickup area can be made with large-scale water flow generator to be very limited by screen frame collection, cannot use in small size pond; And when adopting immersible pump to gather, easily cause some less planktons to be rushed out netting gear, gather kind incomplete.
Summary of the invention
the object of this invention is to provide a kind of planktonic intercept type collecting method simple to operation.
for achieving the above object, the technical solution used in the present invention is: a kind of planktonic intercept type collecting method, and gather plankton for the rivers section in flow, this collecting method comprises the steps:
(1) catch net is made: described catch net comprises dictyosome, be located at that described dictyosome bottom may float on the float of the water surface for the sinking sinker launched by described dictyosome, one end of being located at described dictyosome length direction, one end is fixed on described dictyosome and is provided with dead lever on the end of described float, and the side wire side of described dictyosome is also attached with smooth film;
(2) select to gather rivers section, fixing catch net: select to gather rivers section, on riverbank, interval arranges the first spud pile and the second spud pile regularly, to not be located on described first spud pile with length direction on catch net being arranged the end winding support of described float, the other end of described dead lever is located on described second spud pile regularly, described catch net is inserted in the water of described collection rivers section, the direction to flow is met in the side that described catch net is provided with described smooth film, and the length bearing of trend of described catch net and water (flow) direction are that inclination angle is arranged;
(3) end described catch net being close to riverbank is formed delta-shaped region towards water (flow) direction bending, and being provided with for collecting planktonic collecting net in described delta-shaped region, described collecting net is provided with the opening that can enter movably along described catch net length bearing of trend for plankton in described collecting net;
(4) leave standstill and gather, measure and record the concrete numerical value at flow rate of water flow, Measuring Time, inclination angle between catch net and water (flow) direction;
(5) plankton collected is collected: reel catch net, and impact along the length direction of described catch net the side that described catch net is provided with described smooth film with current, make the plankton on described catch net enter in described collecting net through described opening;
(6) close the opening of described collecting net, described collecting net is taken out, the plankton collected can be obtained.
preferably, the dictyosome of described catch net upside edge along its length is also provided with the some support ball floats on can bubbling through the water column.
preferably, described catch net is also provided with the pull rope of inclination angle size between length bearing of trend for adjusting catch net described in described step (2) and water (flow) direction, one end of described pull rope is fixed on described dictyosome and is provided with on the end of described float, and described riverbank is also provided with the 3rd spud pile for the fixing described pull rope other end.
preferably, the upside edge along its length of the described dictyosome of described catch net at least exceeds the water surface 10 centimeters, and the downside edge of described dictyosome is at least positioned at 20 centimeters under water.
preferably, described dead lever is expansion link.
preferably, the length bearing of trend of described catch net and the angle of water (flow) direction are 45 ° ~ 60 °.
preferably, described dictyosome adopts waterproof nylon cloth to make.
preferably, the mesh size of described collecting net is 20 ~ 400 orders/inch.
preferably, described collecting net is pyrometric cone net.
due to the utilization of technique scheme, the present invention compared with prior art has following advantages: the method that the present invention adopts is simple, and raw material are extensive, and parts are easy to replace, the planktonic A wide selection of colours and designs gathered, is applicable to planktonic collection sampling in rivers section.
Accompanying drawing explanation
accompanying drawing 1 is the vertical view of catch net in the embodiment of the present invention 1;
wherein: 10, catch net; 1, dictyosome; 2, float; 3, dead lever; 4, collecting net; 41, opening; 5, pull rope; 6, the first spud pile; 7, the second spud pile; 8, the 3rd spud pile; 9, ball float is supported.
Embodiment
below in conjunction with drawings and Examples, technical scheme of the present invention is further elaborated.
embodiment 1
a kind of planktonic intercept type collecting method, gather plankton for the rivers section in flow, concrete steps are as follows:
first, the material making catch net 10 is prepared: waterproof nylon cloth, the float 2 that may float on the water surface, the support ball float 9 that may float on the water surface, sinking sinker, dead lever 3, pull rope 5, smooth film.Waterproof nylon cloth is tailored into the dictyosome 1 of the catch net 10 needed for collection, float 2 is fixed on dictyosome 1 one end along its length, according to the length of dictyosome 1, dictyosome 1 upside edge along its length arranges some support ball floats 9, sinking sinker is placed in the bottom of dictyosome 1, for adapting to large water surface operation, the telescopic expansion link with certain rigidity selected by dead lever 3, one end of dead lever 3 and one end of pull rope 5 are all fixed on dictyosome 1 and are provided with on the end of float 2, for ease of follow-up, plankton is separated from catch net, the side wire side of dictyosome 1 is attached with smooth film.
after catch net 10 makes, selection need gather planktonic rivers section, catch net 10 is placed in water, as shown in Figure 1, on riverbank, interval arranges the first spud pile 6 and the second spud pile 7 regularly, the direction that side catch net 10 being provided with smooth film is met to flow is placed, then will not be located on the first spud pile 6 with length direction on catch net 10 being arranged the end winding support of float 2, tractive dead lever 3, the one end being provided with float 2 is sent in the middle of rivers, thus catch net is deployed in rivers, the length bearing of trend of catch net 10 and water (flow) direction is made to be that inclination angle is arranged, then the other end of dead lever 3 is located at regularly on the second spud pile 7, for guaranteeing in gatherer process, comparatively comprehensively can collect plankton, catch net 10 is when arranging, the upside edge along its length of dictyosome 1 at least exceeds the water surface 10 centimeters, the downside edge of dictyosome 1 is at least positioned at 20 centimeters under water.
in order to energy concentrated collection plankton, end catch net 10 being close to riverbank is formed delta-shaped region towards water (flow) direction bending, and arrange for collecting the collecting net 4 that planktonic mesh size is 400 orders/inch in described delta-shaped region, described collecting net 4 can be pyrometric cone net in the present embodiment, collecting net 4 is provided with the opening 41 that can enter movably along catch net 10 length bearing of trend for plankton in collecting net 4, opening 41 place of collecting net 4 is provided with the draw-string for tightening up opening 41, collecting net 4 is close to delta-shaped region and arranges.
when gathering plankton, for controlling the scouring intensity of current to catch net 10 better, according to flow rate of water flow size, tractive pull rope 5, make the length bearing of trend of catch net 10 and the corner dimension of water (flow) direction between 45 ° ~ 60 °, the 3rd spud pile 8 is then set on riverbank for fixed tractive 5.
leave standstill a period of time, measure and record the concrete numerical value at flow rate of water flow, Measuring Time, inclination angle between catch net 10 and water (flow) direction.Until to the acquisition time preset, reel catch net 10, and be provided with the side of smooth film with current along the length direction impact catch net 10 of catch net 10, the opening 41 of the plankton on catch net 10 on collecting net 4 is entered in collecting net 4.
finally, twitch the draw-string at opening 41 place of collecting net 4, opening 41 is tightened up, then collecting net 4 is left the water, so just obtain the plankton collected, then follow-up analysis, detection are carried out to the plankton collected.
to sum up, the planktonic intercept type collecting method of one of the present invention, its operation is comparatively simple, and draws materials and be extensively easy to replace, and easy to implement, the planktonic A wide selection of colours and designs of collection, is applicable to planktonic collections in rivers section and samples.
above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (9)
1. a planktonic intercept type collecting method, gather plankton for the rivers section in flow, it is characterized in that, this collecting method comprises the steps:
(1) catch net is made: described catch net comprises dictyosome, be located at that described dictyosome bottom may float on the float of the water surface for the sinking sinker launched by described dictyosome, one end of being located at described dictyosome length direction, one end is fixed on described dictyosome and is provided with dead lever on the end of described float, and the side wire side of described dictyosome is also attached with smooth film;
(2) select to gather rivers section, fixing catch net: select to gather rivers section, on riverbank, interval arranges the first spud pile and the second spud pile regularly, to not be located on described first spud pile with length direction on catch net being arranged the end winding support of described float, the other end of described dead lever is located on described second spud pile regularly, described catch net is inserted in the water of described collection rivers section, the direction to flow is met in the side that described catch net is provided with described smooth film, and the length bearing of trend of described catch net and water (flow) direction are that inclination angle is arranged;
(3) end described catch net being close to riverbank is formed delta-shaped region towards water (flow) direction bending, and being provided with for collecting planktonic collecting net in described delta-shaped region, described collecting net is provided with the opening that can enter movably along described catch net length bearing of trend for plankton in described collecting net;
(4) leave standstill and gather, measure and record the concrete numerical value at flow rate of water flow, Measuring Time, inclination angle between catch net and water (flow) direction;
(5) plankton collected is collected: reel catch net, and impact along the length direction of described catch net the side that described catch net is provided with described smooth film with current, make the plankton on described catch net enter in described collecting net through described opening;
(6) close the opening of described collecting net, described collecting net is taken out, the plankton collected can be obtained.
2. planktonic intercept type collecting method according to claim 1, is characterized in that: the dictyosome of described catch net upside edge along its length is also provided with the some support ball floats on can bubbling through the water column.
3. planktonic intercept type collecting method according to claim 1, it is characterized in that: the pull rope described catch net being also provided with inclination angle size between length bearing of trend for adjusting catch net described in described step (2) and water (flow) direction, one end of described pull rope is fixed on described dictyosome and is provided with on the end of described float, and described riverbank is also provided with the 3rd spud pile for the fixing described pull rope other end.
4. planktonic intercept type collecting method according to claim 1, is characterized in that: the upside edge along its length of the described dictyosome of described catch net at least exceeds the water surface 10 centimeters, and the downside edge of described dictyosome is at least positioned at 20 centimeters under water.
5. planktonic intercept type collecting method according to claim 1, is characterized in that: described dead lever is expansion link.
6. planktonic intercept type collecting method according to claim 1, is characterized in that: the length bearing of trend of described catch net and the angle of water (flow) direction are 45 ° ~ 60 °.
7. planktonic intercept type collecting method according to claim 1, is characterized in that: described dictyosome adopts waterproof nylon cloth to make.
8. planktonic intercept type collecting method according to claim 1, is characterized in that: the mesh size of described collecting net is 20 ~ 400 orders/inch.
9. planktonic intercept type collecting method according to claim 1, is characterized in that: described collecting net is pyrometric cone net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410165989.1A CN103907575B (en) | 2014-04-23 | 2014-04-23 | A kind of planktonic intercept type collecting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410165989.1A CN103907575B (en) | 2014-04-23 | 2014-04-23 | A kind of planktonic intercept type collecting method |
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| Publication Number | Publication Date |
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| CN103907575A CN103907575A (en) | 2014-07-09 |
| CN103907575B true CN103907575B (en) | 2015-08-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109169543A (en) * | 2018-09-05 | 2019-01-11 | 长江水利委员会长江科学院 | Non- formula fish early stage collection of resources device and method of paddling |
| CN114887363B (en) * | 2022-04-15 | 2023-04-07 | 中国科学院生态环境研究中心 | In-situ collection and screening method and device for suspended particles in flowing water body |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3931740A (en) * | 1972-10-30 | 1976-01-13 | Lyle Carter | Apparatus for collecting surface particle on body of water |
| SU1013813A1 (en) * | 1981-12-18 | 1983-04-23 | Институт Океанологии Им.П.П.Ширшова | Device for concentration sampling from the ocean bottom |
| RU2008645C1 (en) * | 1991-04-30 | 1994-02-28 | Центральный научно-исследовательский институт машиностроения | Depth sampler |
| CN101990864B (en) * | 2009-08-24 | 2012-05-30 | 中国水产科学研究院东海水产研究所 | Self-submergence frame type sampling method of marine juvenile fish by sampling net |
| CN202057508U (en) * | 2011-04-14 | 2011-11-30 | 中国海洋大学 | Phytoplankton collecting device |
| CN202083570U (en) * | 2011-05-30 | 2011-12-21 | 齐齐哈尔大学 | Sampler for living beings and deposit sediments of water-bottom fluid mud layer |
| CN202310914U (en) * | 2011-11-16 | 2012-07-11 | 中国水产科学研究院黑龙江水产研究所 | River multi-water-layer fish larvae collecting device |
| CN202653026U (en) * | 2012-05-22 | 2013-01-09 | 杨成胜 | Dragging net with double-layer mesh on upper part |
| CN202760026U (en) * | 2012-07-31 | 2013-03-06 | 中国科学院水生生物研究所 | Purse seine sampling device for surveying of bait fish resources in shallow lakes |
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