A tree ring detection and analysis system
A technology for tree rings and analysis systems, which is applied in the direction of using nuclear magnetic resonance for analysis, etc., can solve problems such as easy damage to trees and complicated operations, and achieve the effects of being easy to carry, reducing damage, and overcoming errors.
Inactive Publication Date: 2016-08-10
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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[0004] The embodiment of the present invention provides a tree ring detection and analysis system, which aims to solve the problems that the existing tree ring detection methods are complicated to operate and easy to damage trees
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[0012] The invention adopts nuclear magnetic resonance imaging technology to carry out non-destructive detection on tree rings, which can quickly image and reduce damage to trees.
[0013] The atomic nucleus with spin magnetic moment produces energy level splitting in a magnetic field, and is irradiated by electromagnetic waves of frequencies corresponding to different energy levels to resonate and absorb energy, which is nuclear magnetic resonance. Nuclear Magnetic Resonance technology is the cutting-edge technology in the world at present. There have been many researches in the fields of medicine, physics, chemistry, biology, etc., and its technology is relatively mature.
[0014] Water plays a very important role in plant physiological processes. 80% of the protoplasm of tree cells is water, and water is also the raw material and medium of its metabolism, while water is the substance for maintaining the appearance and attitude of trees. The annual rings of trees are compos...
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The invention is applied to the field of tree ring detection and provides a tree ring detection and analysis system. The tree ring detection and analysis system comprises a nuclear magnetic resonance unit, a signal acquisition unit and an imaging and analyzing unit, wherein the nuclear magnetic resonance unit is used for performing nuclear magnetic resonance imaging on the tree ring; the signal acquisition unit is connected with the nuclear magnetic resonance unit and is used for acquiring nuclear magnetic resonance information of the tree ring; the imaging and analyzing unit is connected with the signal acquisition unit and is used for performing imaging processing and analyzing according to a tree ring nuclear magnetic resonance signal acquired by the signal acquisition unit. The tree ring is subjected to imaging detection and analysis by utilizing the nuclear magnetic resonance imaging technology, the tree ring can be subjected to nondestructive testing in the field, rapid imaging is realized, the damage to the trees is reduced, an error caused by tree core fracture in the sampling process is avoided, each system unit can be freely detached and assembled, and the tree ring detection and analysis system is portable and convenient and is easily carried to perform field operation.
Description
technical field [0001] The invention belongs to the field of tree ring detection, in particular to a tree ring detection and analysis system. Background technique [0002] Under the background of climate change, the frequency and degree of drought are gradually increasing, and it is urgent to study the spatiotemporal evolution of long-term drought. Since my country's meteorological observation records are relatively short, mostly in the past 50 years, the use of tree rings and other alternative data for climate reconstruction has significant advantages. [0003] At present, in dendroclimatology, the processing of tree ring sample cores involves processes such as drying and polishing, which is time-consuming and laborious. During the collection process of sample cores, the sample cores may also be broken. To a certain extent, the normal physiological process of trees is destroyed, and the traditional collection process of tree ring sample cores is not applicable to some prec...
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IPC IPC(8): G01N24/08
Inventor 严登华张诚尹军王浩翁白莎吴迪肖伟华
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES