Layered large sampling area sampling method for marine benthic animals
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A benthic and layered technology, applied in the direction of sampling devices, etc., can solve the problems of inaccurate sampling, poor controllability of operation, and no reports.
Inactive Publication Date: 2019-01-11
GUANGDONG OCEAN UNIVERSITY
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The above mud sampler is used to collect mud by throwing the mud sampler freely from the water surface, which has the disadvantages of too small sampling area, weak operation controllability
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Embodiment 1
[0054] A stratified large sampling area sampling method for marine benthos, such as Figure 1-5 As shown, the steps involved are:
[0055] Step 1, determine the coordinates of the ocean sampling point by GPS equipment;
[0056] Step 2, place the sample quadrat in the area where the marine sampling point is located and mark the location of the sample quadrat as the underwater sediment sampling area;
[0057] Step 3, collecting image information of the underwater sediment sampling area through imaging equipment;
[0058] Step 4, put the sampler with scale horizontally into the underwater sediment sampling area of step 2 and make the sampler put in equal to the seabed;
[0059] Step 5: collect the bottom mud layer by layer inside the sampler, and then place it in the sampling barrel and seal it.
[0060] The area of collecting bottom mud of the present invention is 0.25m 2 ~1.0m 2 .
[0061] The fifth step is specifically to collect the bottom mud layer by layer inside ...
Embodiment 2
[0078] A layered large sampling area sampling method for marine benthic animals, the main equipment used is a survey ship, diving equipment, GPS locator, underwater camera, underwater camera, sample square 1, sampler 2, wide-mouth plastic Bucket and flat spade etc.
[0079] Specific implementation steps:
[0080] 1. Positioning
[0081] Select the sedimentary sea area as the sediment, and the survey ship goes to the designated sea area, and uses the GPS locator to locate and determine the coordinates of the ocean sampling points.
[0082] 2. Put sample square 1
[0083] Arrive at the ocean sampling point and arrange for two divers to dive to the bottom of the sea, and then release sample 1 to the bottom of the sea.
[0084] 3. Collect images of the underwater sediment sampling area
[0085] Use a professional underwater camera or video camera to collect the image information of the apparent properties of the sediment and surface organisms where the sample plot 1 is located...
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Abstract
The invention relates to a layered large sampling area sampling method for marine benthic animals. The method comprises the following five steps of step 1, determining coordinates of an ocean samplingpoint through GPS equipment; step 2, throwing a quadrat to a region where the ocean sampling point is located and marking the position of the quadrat as an underwater sediment sampling region; step 3, collecting image information of the underwater sediment sampling region through imaging equipment; step 4, horizontally putting a sampler with scales into the underwater sediment sampling region ofthe step 2, and enabling the put sampler to be flush with the seabed; and step 5, layeredly collecting the sediment in the sampler and then layeredly placing the sediment in a sampling barrel and sealing. According to the layered large sampling area sampling method for the marine benthic animals, a sediment sample can be directly layeredly collected within the range of the quadrat, so that the completeness and representativeness of the benthic animals in the collected sediment are ensured. The method has the advantages of high operation controllability and accurate sampling. According to the method, the range of the collected sediment is 0.25 to 1.0 square meter, and the sampling area of a bottom sampler in the prior art is greatly improved, so that the representativeness of the sample isimproved.
Description
technical field [0001] The invention relates to the field of marine benthic animal sampling, in particular to a layered large sampling area sampling method for marine benthic animals. Background technique [0002] Benthic animals are an important part of the marine ecosystem, and play an important role in the flow of materials and energy in the marine ecosystem. Qualitative and quantitative analysis is of great significance for the investigation of marine benthos, the study of marine biodiversity, the estimation of the secondary productivity of marine benthos, and the evaluation of the ecological functions of benthos. [0003] The current national standard GB / T 12763.6-2007, marine survey specification part 6: survey of marine organisms or macrobenthos. 2 ), spring mud picker (sampling area 0.1m 2 ) and box mud extractor (sampling area 0.25m 2 ) and other mud extractors. The above mud sampler is used to collect mud by throwing the mud sampler freely from the water surfac...
Claims
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Application Information
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