CN114371024A

CN114371024A - Portable field investigation sample square frame

Info

Publication number: CN114371024A
Application number: CN202210088153.0A
Authority: CN
Inventors: 郑颖; 郭建英; 董雷; 杨振奇; 刘艳萍; 唐国栋; 张铁钢
Original assignee: Institute of Water Resources for Pasteral Area Ministry of Water Resources PRC
Current assignee: Institute of Water Resources for Pasteral Area Ministry of Water Resources PRC
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-04-19
Also published as: ZA202207354B

Abstract

The invention relates to the technical field of grassland vegetation survey and measurement, in particular to a portable field survey sample frame. The portable field survey sample frame comprises a square frame body, a height-adjustable support and a wire-mounted partition piece, wherein the height-adjustable support is detachably assembled at the lower end of the square frame body, the square frame body comprises four side frame strips, the four side frame strips are sequentially detachably connected end to end, hanging points are arranged on each side frame strip at equal intervals along the length direction of the side frame strip, the hanging points of the two side frame strips, which are far away from the square frame body, are arranged in a one-to-one correspondence manner, and the partition piece is detachably connected between the two hanging points which are in one-to-one correspondence. The advantages are that: reasonable in design has the function various, height and measuring area are adjustable, can fast split the equipment and take up and deposit the excellent characteristics such as take up an area of for a short time, be convenient for transport and carry, is favorable to improving open-air vegetation investigation efficiency and accuracy, is applicable to different grassland vegetation communities investigation and sample.

Description

Portable field investigation sample square frame

Technical Field

The invention relates to the technical field of grassland vegetation survey and measurement, in particular to a portable field survey sample frame.

Background

In the process of surveying and sampling grassland vegetation resources, a sample frame is often used for selecting grasslands with a certain area as survey objects, surveying plant species in the grasslands, measuring basic indexes such as height and coverage degree, and collecting related plant and soil samples. The sample frames are generally squares with fixed areas except for special cases, and the side lengths can be set to be 0.5m, 1m, 2m and the like according to actual needs.

At present, a traditional sample square frame is made into a fixed square frame by adopting wooden or iron strips, and the area of the sample square frame is not adjustable; or the iron nails and the ropes are wound into a square, so that the shape of the square is easy to be irregular, the area generates deviation, and the accuracy of the investigation result is influenced. In addition, when vegetation coverage is estimated, a fixed grid plate or grid-shaped iron wires or ropes and the like are often adopted, so that the vegetation coverage is not detachable and inconvenient to carry outdoors. Therefore, the traditional sample square frame has the defects of portability, non-detachability, easy winding of wires, non-adjustable sample square area and the like.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a portable field investigation sample frame, which effectively overcomes the defects of the prior art.

The technical scheme for solving the technical problems is as follows:

the utility model provides a portable open-air investigation appearance square frame, including the square frame framework, the separator of adjustable high support and line dress, above-mentioned adjustable high support detachable assembles in the lower extreme of above-mentioned square frame framework, above-mentioned square frame framework includes four frame strips, four above-mentioned frame strips can dismantle the connection end to end in proper order, all be equipped with along its equidistant interval of length direction on every above-mentioned frame strip and hang the point, and the hanging point one-to-one setting of two above-mentioned frame strips that above-mentioned square frame framework kept away from each other, and, detachable connects above-mentioned separator between two above-mentioned hanging points of mutual one-to-one.

On the basis of the technical scheme, the invention can be further improved as follows.

Furthermore, the height-adjustable support comprises four vertical telescopic height-adjusting rods, and the upper ends of the four telescopic height-adjusting rods are respectively connected with the lower ends of the four corners of the square frame body in a detachable mode in a one-to-one correspondence mode.

Further, the telescopic height-adjusting rod comprises a fixed pipe and a movable rod which are vertically arranged respectively, a sleeve piece is arranged at the upper end of the fixed pipe, the lower end of the movable rod is inserted into the upper end of the fixed pipe from top to bottom, a tightening screw is arranged at the side end of the sleeve piece, and the tightening screw can be screwed to the movable rod to abut against or be far away from the movable rod under the action of external force.

Furthermore, two adjacent frame strips are detachably connected with each other through a tee joint, and the rest of the three-way joint is downward and detachably connected with the upper end of the telescopic height-adjusting rod corresponding to the lower part.

Furthermore, the separator is an elastic line, and hooks which are hooked and matched with the hanging points are arranged at two ends of the separator.

Further, the hanging points are round holes or elliptical holes penetrating through the side frame strips.

Further, the distance between two adjacent hanging points is 10 cm.

Furthermore, the frame strips are hollow tubes.

The invention has the beneficial effects that: reasonable in design has the function various, height and measuring area are adjustable, can quick split equipment and save the occupation of land little, the excellent characteristics such as portable of being convenient for transport, is favorable to improving open-air vegetation investigation efficiency, is applicable to different grassland vegetation communities investigation and sample.

Drawings

FIG. 1 is a schematic structural diagram of a portable field survey sample box of the present invention;

FIG. 2 is a schematic top view of a portable field survey sample pane of the present invention in individually evaluating coverage of plants in corresponding panels;

FIG. 3 is a schematic top view of a portable field survey sample pane of the present invention in estimating coverage of a plant or community within the corresponding panel;

FIG. 4 is a schematic top view of a portable field survey sample frame of the present invention using a conventional point measurement method to determine coverage;

fig. 5 is a schematic structural diagram of the cooperation between the hook and the hanging point in the portable field investigation sample frame.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a square frame body; 2. a height-adjustable bracket; 3. a separator; 11. a frame strip; 12. hanging points; 13. a tee fitting; 21. a telescopic height-adjusting rod; 31. hooking; 211. a fixed tube; 212. a travel bar; 213. a sleeve member.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Example (b): as shown in fig. 1, the portable field survey sample frame of this embodiment includes a square frame 1, a height-adjustable support 2 and a wire-bound separator 3, the height-adjustable support 2 is detachably assembled at the lower end of the square frame 1, the square frame 1 includes four side frame strips 11, the four side frame strips 11 are sequentially detachably connected end to end, hanging points 12 are arranged on each side frame strip 11 at equal intervals along the length direction, the hanging points 12 of the two side frame strips 11 that are far away from the square frame 1 are arranged in a one-to-one correspondence manner, and the separator 3 is detachably connected between the two hanging points 12 in a one-to-one correspondence manner.

In this embodiment, the distance between two adjacent hanging points 12 is preferably 10 cm.

In this example, the evaluation of the coverage of the plant community during the survey is focused. When the method is used, the sample frames are firstly combined and placed above the plant community to be tested, the method can be used for ordinary sample frame investigation, and the method is described by combining different types of plant coverage measurement:

example 1) for plants in only a part of the area of the square, two dividers 3 can be used to frame the area where the plants are located, as shown in figure 2. The coverage of the plants (or colonies) in the corresponding boxes can now be evaluated individually and converted to 1m on further data analysis²The degree of coverage of (a). Taking fig. 2 as an example, the coverage of the plant a in the small sample box is calculated as follows:

in the formula, C1 represents the coverage of plant a in the box of the thumbnail, a1 represents the projected area of plant a in the box of the thumbnail, and a' represents the area of the box of the thumbnail (0.3 m × 0.3m in this example).

Converting the coverage of the plant a to 1m²The formula of (1) is:

in the formula, S represents the converted area (here, 1 m)²)

The estimated plant coverage using this embodiment will be closer to the true value since, in a smaller range, the estimated plant coverage will be more accurate.

Example 2) for communities needing to divide plaques, a plurality of separators 3 can be hung as required, and plants can be hung by the separators 3 for division, as shown in fig. 3. The degree of coverage of the plant a (or population c) in the corresponding grid can now be estimated individually and converted to 1m on further data analysis²The degree of coverage of (a). The conversion was performed in the same manner as in example 1).

Example 3) in addition, when the coverage needs to be measured by the conventional point measurement method, the spacers 3 can be hung on all the corresponding hanging points 12 in the box frame 1, and the vegetation coverage can be estimated by using the measuring staff b as shown in fig. 4.

As a preferred embodiment, the height-adjustable support 2 includes four vertical telescopic height-adjusting rods 21, and the upper ends of the four telescopic height-adjusting rods 21 are detachably connected to the lower ends of the four corners of the square frame 1 in a one-to-one correspondence manner.

In the above embodiment, the height-adjustable support 2 is used for supporting the square frame 1 and adjusting the height, and is adaptable to different vegetation types and height sample surveys.

In a preferred embodiment, the telescopic height-adjusting rod 21 includes a fixed tube 211 and a movable rod 212, which are vertically disposed, respectively, a sleeve 213 is disposed at an upper end of the fixed tube 211, a lower end of the movable rod 212 is inserted into an upper end of the fixed tube 211 from top to bottom, and a tightening screw is disposed at a side end of the sleeve 213, and the tightening screw can be screwed to the movable rod 212 to abut against or be away from the movable rod 212 by an external force.

In the above embodiment, flexible height-adjusting pole 21 is when heightening the operation, unscrews the screw of screwing up, can apply external force and make carriage release lever 212 reciprocate for sleeve spare 213, and after the altitude mixture control was good, the screw pretension of screwing up offsets with the corresponding position of carriage release lever 212, can be so that fixed pipe 211 and carriage release lever 212 reciprocal anchorage, and overall structure design is simple, and the operation is swift, convenient.

In this embodiment, the fixed pipe 211 and the movable rod 212 are square pipes.

In a preferred embodiment, two adjacent side frame strips 11 are detachably connected to each other through a three-way member 13, and the remaining joint of the three-way member 13 faces downward and is detachably connected to the upper end of the corresponding telescopic height-adjusting rod 21 below.

Among the above-mentioned embodiment, make the three connect through tee bend 13 between two adjacent frame strips 11 and the flexible pole 21 of increaseing that corresponds the corner, the dismouting is very convenient, does benefit to the whole dismantlement equipment of framework, does benefit to very much and carries.

In a preferred embodiment, the spacer 3 is an elastic thread, and hooks 31 to be engaged with the engagement points 12 are provided at both ends thereof.

Partition body 3 adopts elastic wire (rope) in the above-mentioned embodiment, and it can to lengthen during the use and make the couple 31 at both ends and hang 12 of hanging that corresponds on two frame strips 11 that keep away from each other articulate, and the operation is very simple, simultaneously, connects the back, can be effectual carry out the division of district square to 1 inside to the different grade type plants of square frame to the coverage of accurate calculation plant or community.

In this embodiment, as shown in fig. 5, the hanging point 12 is a circular hole or an elliptical hole penetrating through the frame strip 11, the hook 31 is generally made of a bar-shaped hard member, when the hanging device is hung, the hook 31 extends into the corresponding hanging point 12 (hole) and abuts against two sides of the inner wall of the hole, after the elastic wire (rope) is tensioned and straightened, the hook 31 can be tightly hung on the hanging point 12 (hole), and the whole hanging process is very convenient to operate.

In this embodiment, the above-mentioned frame strip 11 adopts hollow pipe fitting, and its quality is light, and the operation is more convenient.

Generally, the frame strip 11 may be a square tube.

The embodiment has the following advantages:

1) the square frame body 1 is convenient to disassemble and assemble, and has the advantages that the square frame body is convenient to carry in the field and the size of an investigation sample can be adjusted according to actual requirements;

2) in the using process, the placing hole positions defined by the separating pieces 3 can be adjusted according to the actual density degree of the vegetation, the vegetation is further divided into patches, and the method has the advantages that the estimated coverage of the smaller patches is more accurate, a sample can be divided into a plurality of patches for visual estimation and the average value can be obtained, so that the estimation accuracy of the coverage is improved;

3) the height-adjustable bracket 2 can adjust the height of the whole sample square frame, and has the advantages of being suitable for sample survey of different vegetation types and heights;

4) the grids are divided by the separators 3, so that the coverage of different species can be conveniently estimated, the area of a sample can be adjusted according to actual needs (for example, a sample frame with the area of 20cm multiplied by 50cm is commonly used in survey of meadow steppes), and the method is more plastic;

5) the separator 3 is convenient to store by adopting elastic wires, and has the beneficial effects of preventing mutual winding in the use process;

6) the device can be used for measuring the vegetation coverage by adopting a traditional grid method, and has the advantages of improving the accuracy of measuring the vegetation coverage and the versatility of the invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A portable field investigation appearance square frame which characterized in that: including frame framework (1), adjustable high support (2) and line dress's separator (3), adjustable high support (2) detachable assemble in the lower extreme of frame framework (1), frame framework (1) includes four frame strips (11), four frame strip (11) can be dismantled the connection end to end in proper order, every all be equipped with along its equidistant interval of length direction on frame strip (11) and hang some (12), just two that keep away from each other frame framework (1) hang some (12) one-to-one setting of frame strip (11), and, two of mutual one-to-one detachable connects between hanging some (12) separator (3).

2. A portable field sample box according to claim 1, wherein: the height-adjustable support (2) comprises four vertical telescopic height-adjusting rods (21), wherein the upper ends of the telescopic height-adjusting rods (21) are respectively connected with the lower ends of the four corners of the square frame body (1) in a detachable mode in a one-to-one correspondence mode.

3. A portable field sample box according to claim 2, wherein: flexible heightening pole (21) is including fixed pipe (211) and carriage release lever (212) of vertical setting respectively, the upper end of fixed pipe (211) is equipped with casing spare (213), the lower extreme top-down of carriage release lever (212) inserts inside the upper end of fixed pipe (211), casing spare (213) side is equipped with screws up, it can twist under the exogenic action and move as to screw up carriage release lever (212) offset or keep away from to screw up the screw.

4. A portable field sample box according to claim 2, wherein: two adjacent frame strips (11) are detachably connected with each other through a three-way piece (13), and the rest interface of the three-way piece (13) faces downwards and is detachably connected with the upper end of the telescopic height-adjusting rod (21) corresponding to the lower part.

5. A portable field sample box according to claim 1, wherein: the separator (3) is an elastic line, and hooks (31) which are in hanging connection with the hanging points (12) are arranged at two ends of the separator.

6. A portable field sample box according to claim 5, wherein: the hanging points (12) are round holes or elliptical holes penetrating through the side frame strips (11).

7. A portable field sample box according to claim 1, wherein: the distance between two adjacent hanging points (12) is 10 cm.

8. A portable field sample box according to any one of claims 1 to 7, wherein: the frame strips (11) are hollow pipe fittings.