CN112595208A

CN112595208A - Woody plant height measuring ruler and measuring method

Info

Publication number: CN112595208A
Application number: CN202011433392.2A
Authority: CN
Inventors: 向双; 莫丹; 丁建林; 齐芳
Original assignee: Chengdu Institute of Biology of CAS
Current assignee: Chengdu Institute of Biology of CAS
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-04-02

Abstract

The invention belongs to the technical field of forestry ecology, and particularly relates to a woody plant height measuring ruler and a woody plant height measuring method. The height measuring ruler comprises an ordinate ruler, an abscissa ruler and a reference instrument; the abscissa ruler is transversely connected to the ordinate ruler; the reference instrument is fixedly connected to the ordinate ruler and used for aligning the position of the base point. The height measuring ruler solves the problem of inaccurate measurement precision during repeated measurement in the prior art.

Description

Woody plant height measuring ruler and measuring method

Technical Field

The invention belongs to the technical field of forestry ecology, and particularly relates to a woody plant height measuring ruler and a woody plant height measuring method.

Background

The height measurement of the woody plant in the forest is generally measured from the stem base part exposed out of the ground to the highest leaf surface, the height measurement of the young tree is the most direct reaction of the growth condition of the young tree of the plant, and the method has important significance for discussing the growth adaptation strategy in the habitat of the woody plant young tree with large canopy density, complex terrain and high biodiversity in the forest. It is generally necessary to mark and measure thousands of trees, once a month, for several years until the sapling is mature, and to conduct an analytical study of the sapling growth strategy with measurement data throughout the sapling stage.

At present, in the measurement of the height of a sapling, a steel tape, a height gauge, a height measuring ruler and the like are generally adopted for measurement. Although simple and portable, the softness and easy-to-stretch characteristics of the steel tape often bring inconvenience to the measurement work in actual operation. The height measuring instrument and the height measuring rod need complicated procedures when measuring one sapling, and the work efficiency is relatively low when measuring thousands of saplings every month. Meanwhile, the inconsistent positions of the bottoms of the three instruments placed on the ground (different standards of the stem bases) in each measurement also cause the reduction of the measurement precision of each measurement, and the measurement data has larger errors. For example, the application numbers CN208736296U, application days 2018-09-28 and publication days 2019-04-12 disclose a spliced sapling height measuring ruler, which comprises a base and a height measuring ruler main body, wherein the height of the height measuring ruler subject is 0.3, the height measuring ruler main body is composed of three hollow cylindrical spliced sections, sequentially connected scales are marked on the outer surfaces of the three spliced sections, and the first spliced section at the bottom is vertically arranged at the top of the base, so that the invention provides a portable, simple to use and efficient sapling height measuring ruler, which is not aligned with the sapling tree end for measurement, and thus accurate measurement precision cannot be obtained; according to the data of a sample prescription (Qingcheng mountain) for long-term monitoring of subtropical evergreen broad-leaved forests, the high distribution pattern of the under-forest saplings: 0-1m (60-70%), 0-2m (85-95%), and is especially suitable for the research task of accurate measurement in long term and frequently with tree height below 2 m. Compared with the invention, the invention actually solves the technical problem of how to use a portable, simple and efficient height measuring ruler to ensure the measurement precision while measuring.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a woody plant height measuring ruler, which overcomes the problem of inaccurate measurement precision during repeated measurement in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

a woody plant height measuring ruler comprises an ordinate ruler, an abscissa ruler and a benchmark instrument: wherein the content of the first and second substances,

the abscissa scale is transversely connected to the ordinate scale, the abscissa scale is aligned to the ordinate scale to realize measurement reading, the length of the ordinate scale is 2m, and the length of the abscissa scale is 1 m;

the benchmark appearance fixed connection is on the ordinate chi, the benchmark appearance is used for aiming at woody plant basic point position, realizes the accuracy of measuring the position at every turn.

Further, abscissa chi fixed connection in ordinate chi's connection contained angle is 90, realizes that when ordinate chi and surveyed woody plant are parallel, abscissa chi and woody plant are perpendicular to reach measurement accuracy's accuracy.

Further, set up first spout on the ordinate chi, set up the second spout on the abscissa chi, the spout is used for realizing that ordinate chi and abscissa chi carry out the not woody plant of slide measurement co-altitude.

Further, the first sliding groove and the second sliding groove are connected through a bolt bearing, and the bolt bearing is used for connection to achieve random sliding between the ordinate ruler and the abscissa ruler.

Furthermore, scales are arranged on the front side and the back side of the ordinate and used for reading a measuring result during measurement.

Further, the reference instrument is fixedly connected to the bottom of the ordinate ruler and used for aligning the position of the mark base point at the bottom of the measured woody plant.

Further, still include fixation clamp, lower fixation clamp, wherein go up the fixation clamp with lower fixation clamp connect respectively in ordinate chi upper end and lower tip, work as behind the benchmark appearance alignment reference position, lower fixation clamp presss from both sides tightly the back, go up the fixation clamp directly press from both sides tightly can, realize fixed height finding chi on being surveyed woody plant, connect with the rope made of hemp and connect.

In view of the above, the second objective of the present invention is to provide a method for measuring a height measurement ruler of a woody plant, comprising the following steps:

s1 marking woody plants: marking the roots of woody plants, marking the stem base of each selected plant by using red paint, wherein the specific marking position is the stem base just exposed out of the ground, and the marking method comprises the steps of dipping the red paint by a fine hair pen, coating a circle of the red paint around the stem base, and simultaneously marking by using a steel hanging plate red plastic lock catch binding band which is engraved with codes, wherein the red plastic lock catch is hung on the plant which is 0.5m away from the red paint.

S2, mounting a height measuring ruler: aligning a reference instrument on the height measuring ruler to the mark point, and clamping the measuring target by the upper fixing clamp and the lower fixing clamp for fixing;

s3 slide measurement: sliding the abscissa ruler on the ordinate ruler until the abscissa ruler is arranged at the top end of the measurement target;

reading at S4: and reading the scale of the ordinate scale, wherein the position of the abscissa scale corresponding to the ordinate scale is the height of the measurement target, recording, and recording the first measurement as X1, and performing second measurement according to the steps S2 and S3 by using the first mark point, wherein the second measurement is recorded as X2, X2-X1, so as to obtain a traceability value.

Further, the method for judging the growth vigor of the woody plant comprises the following steps:

s1 measurement: periodically measuring the woody plant, and recording the measurement time and the measurement result; the first measurement is X1, the second measurement is X2, and the third measurement is X3, … … Xn;

as shown in table 1, table 1 shows the periodic measurement records of different varieties of woody plants.

TABLE 1 inventive measurement recording procedure (Tree height/cm)

S2 comparison: the results X1, X2, X3, … … Xn obtained through the periodic measurement in step S1 are compared with a standard value, which is a standard value for each cycle.

Conclusion S3: and (4) judging the growth condition of the tested woody plant after the comparison.

Furthermore, in the step S2, the growth condition of the woody plant can be evaluated by calculating a trace back value using Xn-X (n-1), the last measurement result is subtracted from the current measurement to obtain the trace back value, and the trace back value is compared with the trace back value of the variety, so as to measure the growth condition of the woody plant.

The invention has the following beneficial effects: the woody plant height measuring ruler has the advantages of simple structure, light weight, convenience, no influence of measurement space and weather, accurate measurement precision, simple operation, quick measurement time and greatly reduced cost. Two telescopic connecting rod clamps are fixed on the long scale, so that the long scale and the tree body can be clamped together, and the problem that the measurement is inaccurate due to the fact that the long scale and the tree body scale are pressed down manually and slide up and down is avoided. In the initial measurement stage, the red paint stem base annular mark used in the invention enables each measurement to be carried out from the same position, thereby avoiding the inaccuracy of the measurement data caused by different high and low positions placed at the bottom of the measuring instrument each time. For example, in autumn and winter, a large amount of leaves on the arbor layer wither and fall, a thick layer is laid on the ground, humus and the withered and fallen objects move the position of the stem base upwards, and artificial deviation exists during measurement. Meanwhile, the red paint marks are obvious and not easy to fall off, and the saplings marked by the research institute are quickly found in the forest and are measured one by one according to the sequence. The woody plant growth strategy research generally needs to measure and record the height of thousands of young trees for a long time, and the monitoring frequency of measuring once every month, every two months or every year has large and tedious workload, so that a simple tool capable of quickly, efficiently and accurately measuring the height of the trees is needed to ensure the high efficiency of the measurement work. Therefore, the invention removes the simple measuring rod with complicated steps, can quickly and accurately measure the height of the young tree, and can be independently completed by one person.

Drawings

FIG. 1 is a structural view or a six-sided view of a woody plant height measuring ruler according to example 1 of the present invention;

FIG. 2 is a schematic diagram of an application of a woody plant height measuring ruler in the embodiment of the present invention;

fig. 3 is a structural diagram of a woody plant height measuring ruler according to embodiment 3 of the present invention.

Reference numerals

1. The device comprises an ordinate scale, 2 abscissa scales, 3 upper fixing clamps, 4 lower fixing clamps, 5 first sliding grooves, 6 second sliding grooves, 7 bolt bearings, 8 scales and 9 benchmark instruments.

Detailed Description

The examples are given for the purpose of better illustration of the invention, but the invention is not limited to the examples. Therefore, those skilled in the art should make insubstantial modifications and adaptations to the embodiments of the present invention in light of the above teachings and remain within the scope of the invention.

Example 1

The embodiment of the invention relates to an operation method of a woody plant height measuring ruler, which comprises the following specific steps:

(1) woody plants in under-forest plots were selected according to the purpose of the study.

(2) The base of the stem of each selected plant sapling was marked with red paint. The specific marking position is the stem base just exposed out of the ground, and the marking method is that a fine hair brush dips red paint and coats an endless belt with the width of 1cm around the stem base.

(3) The steel hanging plate carved with the code is hung at the crossing position of the trunk and the branch with the tree height of about 0.5m by a red plastic closing rope, and the code same as the steel hanging plate is carved on the red closing rope. Under the condition that the steel hanging plate is dropped or lost, the code of the sapling can still be found on the red closing rope.

(4) The height of the saplings was measured once a month using a home-made simple height measuring ruler. As shown in fig. 2, the bottom of the long scale is placed at the stem base of the sapling to be flush with the red paint mark, the stem base is clamped with the long scale by the lower telescopic connecting rod clamp on the long scale, and the upper end of the stem and the long scale are clamped by the upper telescopic connecting rod of the long scale, so that the long scale is fixed and prevented from sliding on the stem of the sapling. Finally, the short scale 2 is horizontally placed at the highest position of the leaf surface and forms an included angle of 90 degrees with the long scale, and the height of the saplings on the long scale is read out (the position of the long scale in contact with the short scale in an angle mode, namely the scale value of the short scale pointing to the long scale is the height of the saplings).

As shown in Table 2, under the same measurement precision, the height measuring ruler of the invention has shorter measurement time, lower cost and simpler operation, and saves 40 to 80 percent of the measurement time compared with the measurement ruler in the prior art.

TABLE 2 comparison of the height measuring ruler of the present invention with other measuring rulers

Comparison index	This simple height measuring ruler	Other measuring scales
			Measuring time	2min-3min	5-10min
The operation is difficult and easy	Simple and easy	Moderate-difficult
			Cost of the apparatus	20 Yuan	50 yuan to 300 yuan

Example 2

The embodiment of the invention relates to a method for stacking and collecting height measuring rulers of saplings of woody plants, which comprises the following steps:

after the measuring work is finished, the long scale and the short scale in the simple height measuring scale device can be collected together, the long scale and the short scale are stacked together, the upper end telescopic connecting rod clamp and the lower end telescopic connecting rod clamp are stacked together, and the upper end telescopic connecting rod clamp and the lower end telescopic connecting rod clamp are used for clamping the long scale and the short scale together and are placed in a self-made long cloth bag. Thus, the storage space is saved, and the storage box is not easy to lose and is convenient to carry.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. A woody plant height measuring ruler is characterized by comprising a longitudinal coordinatometer (1), an abscissa coordinatometer (2) and a reference instrument (9); wherein the content of the first and second substances,

the abscissa ruler (2) is transversely connected to the ordinate ruler (1);

the reference instrument (9) is fixedly connected to the ordinate scale (1) and used for aligning the position of the base point.

2. A woody plant height gauge according to claim 1, wherein the abscissa ruler (2) is fixedly connected to the ordinate ruler (1) at an included angle of 90 °.

3. A woody plant height measuring ruler according to claim 1, wherein the ordinate ruler (1) is provided with a first slide groove (5) and the abscissa ruler (2) is provided with a second slide groove (6).

4. A woody plant height measuring ruler according to claim 1, wherein the first runner (5) and the second runner (6) are slidably connected by a bolt bearing (7).

5. A woody plant height measuring ruler according to claim 1, wherein the ordinate ruler (1) is provided with graduations (8) on both the front and back sides.

6. A woody plant height measuring ruler according to claim 1, wherein the reference instrument (9) is fixedly connected to the bottom of the ordinate ruler (1).

7. The woody plant height measuring ruler of claim 1, further comprising an upper fixing clip (3), a lower fixing clip (4); wherein, go up fixation clamp (3) with lower fixation clamp (7) are connected respectively in the upper end and the lower tip of ordinate ruler (1), all are used for the fixed action.

8. A method for tracing the height of a woody plant by using the height measuring ruler of claims 1 to 7, which comprises the following steps:

s1 marking woody plants: marking the roots of woody plants;

s2, mounting a height measuring ruler: aligning a reference instrument (9) on the height measuring ruler with the mark points, and clamping the measuring target by the upper fixing clamp (3) and the lower fixing clamp (4) for fixing;

s3 slide measurement: sliding the abscissa ruler (2) on the ordinate ruler (1) until the abscissa ruler (2) is placed at the top end of a measurement target and stops;

reading at S4: reading the scale (8) of the ordinate scale, wherein the position of the abscissa scale (2) corresponding to the ordinate scale (1) is the height of the measurement target, recording the height of the measurement target, wherein the first measurement record is X1, and performing second measurement according to the steps S2 and S3 by using the first mark point, wherein the second measurement record is X2; X2-X1, to derive a retrospective value.

9. The method according to claim 8, wherein the evaluation of the growth of woody plants comprises the steps of:

s1 measurement: repeating the periodic measurements of the woody plant using the method of claim 8 and recording the time and results of the measurements; the first measurement is X1, the second measurement is X2, and the third measurement is X3, … … Xn;

s2 comparison: comparing the results X1, X2, X3, … … Xn, which are periodically measured by the step S1, with the cycle standard value;

10. The method of claim 8, wherein said step S2 is further characterized by using Xn-X (n-1) as a calculation retrospective value to evaluate the growth of woody plants.