Sampling device for analyzing tree rings

Abstract

The invention belongs to the technical field of plant growth and analysis sampling and specifically relates to a sampling device for plant growth and tree ring analysis test. The sampling device comprises a drill bit, wherein the drill bit has a tubular structure with one end open; a zigzag blade is arranged at the front end, namely, the open end face, of the drill bit; an annular slot is formed in the inner wall of the drill bit and is close to the zigzag blade; a cutting tool is arranged in the annular slot; one end of the cutting tool is hinged with the annular slot; the cutting tool can swing toward the center of the drill bit or can be stored in the annular slot; when the cutting tool is stored in the annular slot, the nose of the cutting tool protrudes out of the inner wall of the drill bit, so as to form a barb-shaped structure; when the drill bit rotates forward, the cutting tool can be kept in the annular slot; when the drill bit rotates reversely, the cutting tool can be jacked up by a wooden core in the drill bit. According to the invention, a driving unit, such as a motor is used for driving the drill bit to forward and reversely rotate, when the drill bit rotates forward, the zigzag blade cuts the wooden core downward, and when the drill bit rotates reversely, the cutting tool pops up so as to cut off the wooden core, so that the sampling of the wooden core of a tree can be efficiently completed and research related to tree rings and response to global climate change can be performed.

Description

technical field [0001] The utility model belongs to the technical field of plant growth and analysis and sampling, in particular to a sampling device for analyzing tree rings. Background technique [0002] Tree rings not only record the age of the tree itself, but also record the influence of comprehensive external factors such as environment and climate on the growth of trees, which has become one of the main evidences for the current study of global climate change. Through the analysis of tree rings, we can understand the climate change law and the response characteristics of trees at different age scales. Therefore, to analyze the profound connotation contained in tree rings, the sampling of tree rings has become a primary problem to be solved. At present, when sampling for tree ring analysis, the method of drilling core samples is generally adopted without affecting the normal growth of trees. The tool used is a tree growth cone. The tool is mainly operated manually, ...

AI Technical Summary

Problems solved by technology

The tool is mainly operated manually, and it is easy to cause sampling failure or damage to the tool due to unbalanced force during the drilling process; at the same time, the strength of the person using the tool must be considered. When the force is too small, the cone head is difficult to enter the xylem. The samples could not be obtained smoothly, which also caused some damage to the tree body; in addition, the speed of manual drilling is slow and inefficient, and it is not suitable for the use of large number of samples

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