Sediment collection and cutting device suitable for investigation of marine pasture benthic environment

Abstract

The invention relates to the technical field of marine sediment collection, in particular to a sediment collecting and slitting device suitable for surveying a benthic environment of a marine ranch. The sediment collecting and slitting device comprises a sampling frame, sampling tubes, a tuck net, a sample passing seat and a sample slitting ring, wherein the sampling frame comprises a frame body and a frame cover; the interior of the frame body is equally divided into a plurality of cells; the plurality of sampling tubes are placed in the different cells respectively; a hook connected with the frame body in a hooking manner is arranged on the free side of the frame cover; the tuck net is arranged on one side of the frame body; rubber plugs are placed in the tuck net. After the finish of sampling, the two ends of the sampling tubes are plugged by the rubber plugs, a top plate is arranged at the upper end of the sample passing seat, the rubber plugs at the lower ends of the sampling tubes are removed and sleeve the top plate of the sample passing seat during sample slitting, then the rubber plugs at the upper ends of the sampling tubes are pulled away, the sampling tubes are slowly moved downwards, and samples are exposed out of the sampling tubes and slit by the sample slitting ring. Due to the adoption of the sediment collecting and slitting device, a plurality of columnar samples are obtained in the same small area at the bottom of the marine ranch, and the samples can be quickly discharged during slitting and equally divided into two parts for different measurement to guarantee the consistency of measurement background.

Description

technical field [0001] The invention relates to the technical field of marine sediment collection, in particular to a sediment collection and cutting device suitable for marine ranch benthic environment investigation. Background technique [0002] Bottom sediment sample collection is an important part of marine intertidal environment investigation, and sediment samples can be used for related coastal geological and ecological environment research and analysis. The construction of marine pastures is an important part of the sustainable utilization and development of marine fishery resources, and its construction and maintenance require scientific environmental investigation and assessment. The benthic environment of marine pastures is the habitat of many important marine economic organisms (such as sea cucumbers, abalones, etc.), and the sediment samples within 10 cm of the surface layer provide the main habitat and food source for benthic organisms. Survey sampling is an im...

AI Technical Summary

Problems solved by technology

At present, most of the commercially available sample passing devices are made of metal and are easy to corrode, or are equipped with more complicated sample height measurement and cutting parts, which is not conducive to fast and accurate cutting of samples on site, and the cutting devices for small sediment columnar samples are all It can only be cut horizontally and layered, and cannot be cut vertically. It is difficult to meet the sampling requirements of the same columnar sample for the determination of environmental abiotic indicators and the determination of benthic biological communities.

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