Method of utilizing ground penetrating radar data to construct tree root system three-dimensional image

Abstract

A method of utilizing ground penetrating radar data to construct a tree root system three-dimensional image comprises the following steps: drawing multiple strips of concentric circles measuring lines at equal intervals around tree trunks of the to-be-measured trees, utilizing the ground penetrating radar to acquire the ground penetrating radar data of the tree root system under each measuring line; setting information of each sensing point P of the ground penetrating radar data as PC, N (dis, dep, dia); starting from the ground penetrating data of the measuring line in the outermost circle, opening a search window in the ground penetrating radar data of the measuring line of the C+1 circle on the side close to the tree trunk direction; seeking root source of PC, N of the measuring line of the C+1 circle; utilizing a spline curve to connect each sensing point to acquire the tree root system three-dimensional image. The method of utilizing the ground penetrating radar data to construct the tree root system three-dimensional image has the advantages that digging out or exposing of the root system from the soil is not needed, and thus growing environment of a plant cannot be destroyed, and the problem of root system lossless observation is solved.

Description

technical field [0001] The invention relates to a method for constructing a tree root system three-dimensional image by using ground penetrating radar data, that is, a three-dimensional model of tree root system distribution is constructed by the method. Background technique [0002] The root system of trees is very important, but because the root system almost grows in the soil, it cannot be directly observed for a long time. If the observation method of digging the root system out of the soil or exposing it is adopted, the surrounding environment of the root will undoubtedly be disturbed, and then the structure and function of the root system will be affected. Therefore, it is necessary to provide a method that is efficient and practical, does not damage the soil and plant roots, and can achieve long-term continuous observation. [0003] CN101813774A discloses a method for measuring the diameter of underground roots of plants using ground penetrating radar, which utilizes...

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Problems solved by technology

[0004] However, the combination of the above-mentioned existing technologies obtains a bunch of discrete GPR data after all, and it is still unclear to construct a three-dimensional model of the distribution of tree roots from these data, and even to construct a three-dimensional image of the tree root system

For example, even if a person skilled in the art obtains ground-penetrating radar discrete data of underground roots in the form of dense sections, these data are not continuous in the form of three-dimensional images. For relatively thick roots, these roots can still be distinguished by naked eyes. However, for densely distributed small root systems, it is difficult to judge that the root in a certain section is connected to the root in its adjacent section, which is where the problem to be solved by the focus of the present invention is, that is, The invention provides a method for constructing a three-dimensional image of tree roots by using ground penetrating radar data

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