Wetland deposition rate determination device

Abstract

The invention discloses a wetland deposition rate determination device, which is mainly composed of a rotary determination handle, a connection rod, a spiral bit and a plumb line and is simple in structure composition. The wetland deposition rate determination device adopts a thread butt joint detachable mode, and is convenient to carry and convey, simple to assemble and easy to operate. The design of a spiral sheet can effectively reduce inserting difficulty, helps a device main body to be screwed into a hard deposition layer or a rock layer, prevents the device from integrally sinking, ensures accuracy of determination results and can guard against theft. Compared with a monument mark method and an isotope dating method, the wetland deposition rate determination device is wide in application range and relatively high in determined deposition rate and credibility of ground surface elevation changes.

Description

technical field [0001] The invention relates to the field of deposition rate measurement, in particular to a wetland deposition rate measurement device. Background technique [0002] Sedimentation rate is one of the important factors affecting the evolution and development of wetlands. The current measurement methods include marker pile method, 210 Pb or 137 Cs isotope dating method, etc. In the marker pile method, the insertion depth of the marker pile is between 0.5 and 2.0m. When the wetland mud layer is normal or thin, the measurement result of the marker pile method is more accurate. However, when the mud layer or peat in the wetland is thick, the marker pile cannot touch the solid sediment or rock layer, and the subsidence of the pile body has a certain influence on the accuracy of the result. In addition, the sign post is made of cement material, which has the disadvantages of heavy weight, inconvenient transportation, difficult insertion and high cost. 210 Pb or ...

AI Technical Summary

Problems solved by technology

However, when the mud layer or peat in the wetland is thick, the marker pile cannot touch the solid sediment or rock layer, and the subsidence of the pile body has a certain influence on the accuracy of the results

In addition, the sign post is made of cement, which has the disadvantages of heavy weight, inconvenient transportation, difficult insertion and high cost

210 Pb or 137 Cs isotope dating method usually has a depth of about 1m for borehole sampling, and the cost is high. The results need to be corrected in time, and the borehole samples are easily interfered by various biological and abiotic factors, so it is not widely used.

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