Multipurpose coastal salt marsh survey quantification frame and use method thereof

Abstract

The invention relates to the technical field of coastal wetland survey, in particular to a multi-purpose coastal salt marsh survey quantifying frame and a using method thereof.The multi-purpose coastal salt marsh survey quantifying frame comprises a set of quantifying frame assemblies and a set of quantifying frame supports, and the number of the quantifying frame assemblies is four, six or eight; the number of the quantitative frame supports is four, six or eight, the quantitative frame supports are used for supporting and fixing the quantitative frame assemblies, the quantitative frame assemblies are connected end to end to form a rectangular frame structure, one end of each quantitative frame assembly is an assembly head end, the other end of each quantitative frame assembly is an assembly tail plate, the middle of each quantitative frame assembly is an assembly handle part, and the assembly head ends are matched with the assembly tail plates in size. And the quantitative frame bracket is vertically connected with the component handle part to support and fix the quantitative frame component. According to the multipurpose coastal salt marsh investigation quantifying frame and the using method thereof, through the design capable of being opened and closed, the influence of the height of plants on use is eliminated, and the multipurpose coastal salt marsh investigation quantifying frame can be effectively used under the condition that the plants are tall.

Description

Technical Field

[0001] The present invention relates to the technical field of coastal wetland investigation, in particular to a multi-purpose coastal salt marsh investigation quantitative frame and a use method thereof. Background Art

[0002] When investigating coastal wetlands, it is often necessary to conduct quantitative investigations on the on-site conditions of the survey objects. This is generally done using sample plot surveys. At this time, a quantitative frame of a certain area is usually required to frame the measured sample plot. Therefore, the quantitative frame is a commonly used tool for quantitative investigation of coastal wetlands. The area accuracy and on-site applicability of the quantitative frame have a great impact on the accuracy of the survey results.

[0003] Existing relevant technical standards, such as the Coastal Ecosystem Survey and Assessment Series of Standards, provide recommendations on the area of ​​sample plots for field surveys, but there is no specific description or explanation of the quantitative frame used in field surveys.

[0004] Currently, technical units conducting surveys typically create custom quantitative frames for salt marsh field surveys. These custom frames can be categorized into two types: fixed and open. Fixed frames are enclosed and require deployment from top to bottom. Many salt marsh plants naturally grow to heights exceeding 2 meters, making deployment difficult and, consequently, preventing the implementation or accuracy of quantitative surveys. Open frames, on the other hand, often have flexible connections and are easily deformed by the spacing of the surveyed species, leading to variations in sample area and, in turn, affecting the accuracy of survey results.

[0005] Growth data of most salt marsh plants, such as cover, density, and plant height, need to be obtained through on-site quantitative surveys. However, the salt marsh field environment is usually complex and changeable. Therefore, a survey quantitative framework that can take into account both environmental adaptability and area accuracy is very important for ensuring the accuracy of the survey results. Summary of the Invention

[0006] The purpose of the present invention is to provide a multi-purpose coastal salt marsh survey quantitative frame and a method of using the same, so as to solve the problems of the commonly used homemade quantitative frames raised in the above-mentioned background technology, namely, the fixed quantitative frame is a closed frame and needs to be laid out from top to bottom. The natural growth height of many salt marsh plants exceeds 2 meters, which exceeds the convenient operating height of human hands, making it difficult to lay out and thus impossible to / accurately implement quantitative surveys; and the open quantitative frames are mostly soft connections, which are easily affected by the growth spacing of the surveyed objects and deformed, resulting in changes in the sample area, which in turn affects the accuracy of the survey results.

[0007] To achieve the above-mentioned purpose, the present invention provides a multi-purpose coastal salt marsh survey quantitative frame, comprising a set of quantitative frame components and a set of quantitative frame brackets, wherein the number of the quantitative frame components is 4, 6 or 8; the number of the quantitative frame brackets is 4, 6 or 8, which are used to support and fix the quantitative frame components. The quantitative frame components are connected end to end to form a rectangular frame structure, one end of the quantitative frame component is the component head end, the other end of the quantitative frame component is the component tail plate, the middle part of the quantitative frame component is the component handle, the size of the component head end and the component tail plate are adapted, and the quantitative frame bracket is vertically connected to the component handle to support and fix the quantitative frame component.

[0008] As a preferred solution of the present invention, the main body length of the quantitative frame assembly is 50 cm.

[0009] As a preferred solution of the present invention, the quantitative frame component is provided with a component scale for accurate measurement and estimation.

[0010] As a preferred solution of the present invention, both the head end and the tail plate of the quantitative frame assembly are installed with embedded magnet pieces / blocks for realizing magnetic connection between quantitative frame assemblies, thereby improving the convenience and stability of assembly.

[0011] As a preferred solution of the present invention, the assembly tail plate is composed of side plates and a bottom plate, and the width of the side plates is consistent with the width of the quantitative frame assembly.

[0012] As a preferred solution of the present invention, a groove is provided on the handle of the component, and the top end of the quantitative frame bracket is plugged into and fitted in the groove.

[0013] As a preferred embodiment of the present invention, the quantitative frame bracket is made of corrosion-resistant and water-resistant materials, and the bracket can be painted with red and yellow stripes as needed to facilitate identification and warning when used as a fixed bracket.

[0014] As a preferred solution of the present invention, the quantitative frame component is attached with a magnetic level bubble near the component handle. The magnetic level bubble has a magnetic strip that is adsorbed on the component handle. The surface inner wall of the component handle is embedded with a corresponding magnetic sheet.

[0015] The present invention also provides a method for using a multi-purpose coastal salt marsh survey quantitative frame, which is used for the multi-purpose coastal salt marsh survey quantitative frame and includes the following steps: S1. At the survey location, combine the quantitative frame components into a rectangular frame structure and arrange it horizontally, using a magnetic level bubble to assist in adjusting the horizontal position; S2. Adjust the depth of the quantitative frame bracket inserted into the beach surface according to the height of the survey object and the on-site environment, so that the quantitative frame assembly is stable and adapts to the growth position of the survey object; S3. Use the scales on the quantitative frame assembly and the bracket to accurately measure the coverage and plant height; S4. When it is necessary to fix the quantitative frame assembly, you can choose to leave the bracket in the investigation area to facilitate accurate positioning and continuous monitoring for subsequent investigations.

[0016] As a preferred solution of the present invention, when assembling 4-component quantitative frame assemblies, the head end of each quantitative frame assembly is magnetically adsorbed and connected to the side plate of the tail plate of the adjacent assembly, forming a 90-degree connection; when assembling 6-component or 8-component quantitative frame assemblies, the components are successively connected by magnetic adsorption in the horizontal direction and the 90-degree direction to ensure that the components are closely aligned and stable.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. This multi-purpose coastal salt marsh survey quantification frame and its method of use, through an openable and closable design, eliminates the impact of plant height on its use, allowing effective use even when the plant height exceeds the normal operating range of human hands. Compared with existing homemade open quantification frames, this patented design not only ensures the stability of the quantification frame itself, but also ensures the accuracy of sample area and survey results, making it convenient and time-saving to use.

[0018] 2. Compared with the existing technology, this patented multi-purpose coastal salt marsh survey quantitative frame and its use method improves the accuracy of coverage and plant height measurement and reduces the interference of personnel on measurement accuracy. It can not only be used for single measurement, but also as a fixed sample plot for continuous tracking and monitoring, which increases the diversity of usage scenarios. In areas severely affected by tidal erosion, the scouring force on the device can be reduced by removing the components and leaving only the bracket in place. The components can be reassembled for the next survey, which improves the adaptability and durability of the device. The sample plot area can also be adjusted according to the needs of the actual survey object by changing the component length and (or) increasing the number of variable components, which is flexible and convenient to use.

[0019] 3. This multi-purpose coastal salt marsh survey quantitative frame and its method of use can be disassembled into components and brackets for packaging, transportation, and storage, significantly reducing space usage and improving ease of storage, transportation, and portability. Assembly is quick and easy, allowing field workers to carry multiple sets of components to the survey location and then assemble them, improving work efficiency. Furthermore, the consistent structure of each component / bracket means that if a component / bracket is damaged, the remaining components in that set can still be used with other sets, increasing component utilization and reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the explosion structure of the present invention; Figure 2 Schematic diagram of the structure of the quantitative frame assembly in the present invention; Figure 3 Schematic diagram of the installation of four quantitative frame components in the present invention; Figure 4 Schematic diagram of the installation of six quantitative frame components in the present invention; Figure 5 Schematic diagram of the installation of eight quantitative frame components in the present invention; The meaning of each number in the figure is: 1. Quantitative frame assembly; 2. Assembly head end; 3. Assembly tail plate; 31. Side plate; 32. Bottom plate; 4. Assembly handle; 5. Groove; 6. Magnetic level bubble; 7. Assembly scale; 8. Quantitative frame bracket. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The present invention provides a multi-purpose coastal salt marsh survey quantitative frame and its use method, such as Figure 1-Figure 5 As shown, the system comprises a set of dosing frame assemblies 1 and a set of dosing frame brackets 8. The number of dosing frame assemblies 1 can be four, six, or eight. The number of dosing frame brackets 8 can be four, six, or eight, and they are used to support and secure the dosing frame assemblies 1. The dosing frame assemblies 1 are connected end to end to form a rectangular frame structure. One end of the dosing frame 1 forms the assembly head 2, the other end forms the assembly tail plate 3, and the middle portion of the dosing frame 1 forms the assembly handle 4. The assembly head 2 and the assembly tail plate 3 are sized to match. The dosing frame brackets 8 are perpendicularly connected to the assembly handle 4 to support and secure the dosing frame assemblies 1. The number of dosing frame assemblies 1 can be four, six, or eight, allowing the dosing frame to be adjusted in size and shape to suit different field survey scenarios and the distribution of survey subjects (e.g., salt marsh plants). The dosing frame assemblies 1 are connected end to end to form a rectangular frame structure. The assembly head 2 and the assembly tail plate 3 are sized to match. The magnetic design makes assembly simple and quick. This design concept, which reduces the number of accessory components, improves on-site work efficiency and reduces assembly difficulty. The number of dosing frame brackets 8 matches the number of components and is used to support and secure the dosing frame assembly 1. This design ensures the stability and durability of the dosing frame during use. The dosing frame brackets 8 are vertically connected to the component handle 4 to support and secure the dosing frame assembly 1. This detachable vertical connection design optimizes space utilization, making the dosing frame take up less space during packaging, transportation, and storage, improving portability and storage efficiency.

[0023] In this embodiment, the main body length of the quantitative frame assembly 1 is 50 cm.

[0024] Specifically, the quantitative frame assembly 1 is provided with an assembly scale 7 for precise measurement and estimation.

[0025] Furthermore, both the component head end 2 and the component tail plate 3 of the quantitative frame component 1 are installed with embedded magnet pieces / blocks for realizing magnetic connection between the quantitative frame components 1, thereby improving the convenience and stability of assembly.

[0026] Furthermore, the assembly tail plate 3 is composed of a side plate 31 and a bottom plate 32 , and the width of the side plate 31 is consistent with the width of the quantitative frame assembly 1 .

[0027] Furthermore, a groove 5 is provided on the component handle 4, and the top end of the quantitative frame bracket 8 is plugged into the groove 5 to ensure stable support.

[0028] Furthermore, the quantitative frame bracket 8 is made of corrosion-resistant and water-resistant material, preferably stainless steel in this embodiment, to ensure good corrosion-resistant and waterproof effect. The bracket can be painted with red and yellow stripes as needed to facilitate identification and warning when used as a fixed bracket.

[0029] Furthermore, the quantitative frame component 1 is attached with a magnetic level bubble 6 near the component handle 4. The magnetic level bubble 6 has a magnetic strip, which is adsorbed on the component handle 4. The surface inner wall of the component handle 4 is embedded with a corresponding magnetic piece, which is adsorbed with the magnetic strip. The magnetic level bubble 6 is used to adjust and observe the levelness and is conveniently fixed by magnetic attraction.

[0030] The present invention also provides a method for using a multi-purpose coastal salt marsh survey quantitative frame, which is used for the multi-purpose coastal salt marsh survey quantitative frame and includes the following steps: S1. At the survey location, combine the quantitative frame components into a rectangular frame structure and arrange it horizontally, using a magnetic level bubble to assist in adjusting the horizontal position; S2. Adjust the depth of the quantitative frame bracket inserted into the beach surface according to the height of the survey object and the on-site environment, so that the quantitative frame assembly is stable and adapts to the growth position of the survey object; S3. Use the scales on the quantitative frame assembly and the bracket to accurately measure the coverage and plant height; S4. When it is necessary to fix the quantitative frame assembly, you can choose to leave the bracket in the investigation area to facilitate accurate positioning and continuous monitoring for subsequent investigations.

[0031] Furthermore, when assembling a 4-component quantitative frame assembly, the head end of each quantitative frame assembly is magnetically adsorbed and connected to the side plate of the tail plate of the adjacent assembly, forming a 90-degree connection; when assembling a 6-component or 8-component quantitative frame assembly, the components are successively connected by magnetic adsorption in the horizontal direction and the 90-degree direction to ensure that the components are closely aligned and stable.

[0032] Quantity details of the dosing box components: (1) Generally, a quantitative frame is composed of multiple components connected end to end. When the area of ​​the required quantitative frame is 0.25 square meters, the quantitative frame is composed of four quantitative frame components connected end to end at 90 degrees.

[0033] (2) When the required quantitative frame area is 1 square meter, a "long component" with a length of 100 cm will be used, and then 4 "long components" will be assembled into a quantitative frame. Alternatively, if "long components" are insufficient, 50 cm long components can be used. The 8 components can be connected horizontally in pairs to form 4 groups, and then each group can be connected at 90 degrees to form a square quantitative frame.

[0034] (3) When the area of ​​the required quantitative frame is 0.5 square meters, it is necessary to connect the two components and the two "long components" at 90 degrees to assemble them into a rectangular quantitative frame.

[0035] Alternatively, when the "long component" is missing, 6 components can be used, of which 4 components are first connected horizontally in pairs to form 2 groups, and then these two groups and 2 components are alternately connected end to end at 90 degrees to form a rectangular quantitative frame.

[0036] Use of quantitative frame bracket 8 When environmental conditions limit the use of the dosing frame, investigation requirements, or the need to use it as a fixed dosing frame, and the dosing frame cannot, is inconvenient, or does not need to be directly in contact with the ground, the dosing frame bracket 8 is inserted into the groove of the component handle, and then the dosing frame bracket 8 is inserted into the beach surface. The dosing frame bracket 8 has a scale that can be used to assist in measuring plant height. The starting position of the scale (the 0 scale point) is at the bottom end of the dosing frame bracket 8.

[0037] Component specific connection method: (1) When assembling the four-component quantitative frame assembly 1, the head end of each component is magnetically connected to the side plate of the tail plate of the adjacent component (the components are connected at 90 degrees); (2) When assembling the 6-component quantitative frame assembly 1, the head end of one component and the tail end of another component are magnetically adsorbed and connected to form a group in the horizontal direction, and then connected to other components in a 90-degree direction for assembly.

[0038] Specifically, when the head and tail panels of two adjacent modules are connected at a 90-degree angle, the bottom panel of the tail panel supports the head end of the adjacent module, while the side panels of the tail panel support the head end of the adjacent module. The embedded magnets in the head end attract the iron sheet embedded in the tail panel of the adjacent module, keeping the head and tail ends of the two modules tightly aligned and stable.

[0039] When the head and tail panels of two adjacent modules are connected horizontally, the tail panel's base supports the head of the adjacent module, while the tail supports the head. The side panels of the tail panel mate with the sides of the head, keeping the tail and head aligned. The magnet embedded in the head attracts the iron sheet embedded in the tail, keeping the two modules tightly aligned and stable.

[0040] (3) When assembling the 8-component quantitative frame assembly 1, first, the head and tail ends of the two components are magnetically adsorbed horizontally to form a group, and then each two groups are connected at 90 degrees to be assembled (the head and tail plates are magnetically adsorbed).

[0041] Specific implementation and operation steps: Step (1) When the salt marsh beach where the quantitative frame is required is reached, the components required for the quantitative frame are taken out (when the required sample area is 0.25 square meters, 4 components are taken out; when the required sample area is 1 square meter, 4 long components or 8 components are taken out; when the required sample area is 0.5 square meters, 2 long components and 2 components, or 6 components are taken out). When the surveyed object is relatively low, the quantitative frame component 1 is connected in accordance with the method described in "5. Specific connection method of components" in the technical solution, and then two magnetic level bubbles are respectively adsorbed on two adjacent components with different directions. Then, the assembled quantitative frame is placed from top to bottom at the survey position, and the two magnetic level bubbles are observed. The quantitative frame component 1 is manually adjusted so that the four sides of the quantitative frame can frame the surveyed object horizontally.

[0042] Step (2) When the survey subject is relatively tall, it is difficult or impossible to arrange the fixed quantitative frame from top to bottom. Or because the survey subject is tall, the quantitative frame can only be placed above the head or thrown upward to cover the survey subject. In this case, since the human eye cannot assist in correcting the position, it is difficult or impossible for the fixed quantitative frame to maintain its initial placement level when it falls down. At this time, the actual area of ​​the area where the survey subject is located surrounded by the quantitative frame often deviates from the size of the quantitative frame, resulting in deviations in the results of the quantitative survey. If this quantitative frame is used, this problem can be basically avoided.

[0043] At this time, if the required sample area is 0.25 square meters, first assemble the four components in pairs (at this time in an L shape), and then manually insert the two groups of L-shaped components from the left and right sides respectively and surround the lower part of the stems and branches of the survey objects (in the shape of < and > respectively). Specifically, the two L-shaped components on the left are first inserted at about 135°. When one component is basically inserted, the two L-shaped components are turned about 90° to the right, and then inserted in the direction of about 45° so that the two L-shaped components on the left are in a "<" shape; the operation on the right is the same as that on the left, but the direction is symmetrical, that is, first insert in the direction of about 45°, then turn about 90° to the left, and then in the direction of about 135° to form a ">". Finally, the two sets of L-shaped components are connected end to end. Specifically, the head end is placed on the bottom plate of the adjacent component, and manually adjusted so that the two ends to be connected are aligned, and kept stable by magnetic adsorption, and the four quantitative frame components 1 are tightly connected and matched to form a square.

[0044] Because the quantitative frame assembly 1 is inserted from the lower part of the survey object (such as the area adjacent to the root of the stem), the operation of placing / removing the quantitative frame assembly 1 will not be affected by the height of the survey object, and is within the control range of human eyes and hands. There is also a level bubble to assist in adjustment. Once it is found that the position is inappropriate, the assembly can be directly taken out and re-inserted. By adjusting the position of the quantitative frame assembly 1, the accuracy of the area of ​​the enclosed sample square can be guaranteed.

[0045] Step (3) When the survey object is relatively tall and the required sample area is 1 square meter, large components with a side length of 100 cm can be used, and then assembled and placed according to step (2).

[0046] When there are only components with a side length of 50 cm, the head and tail ends of the two components can be horizontally connected into a group by magnetic adsorption, and then the head and tail plates between each two groups can be magnetically adsorbed to form a large L shape (4 components at this time). Then, the two groups of large L-shaped components are manually inserted from the left and right sides to surround the lower part of the stems and branches of the survey objects (in the shape of large < and large > respectively). The insertion position can be adjusted as needed, and then the two groups of large L-shaped components are connected end to end and kept stable and tightly fitted through magnetic adsorption, so that the 8 components are connected to form a square quantitative frame.

[0047] Step (4) When the survey object is relatively tall and the required sample area is 0.5 square meters, two large components with a side length of 100 cm and two components with a side length of 50 cm can be used, or six components with a side length of 50 cm can be used. Refer to step 3 to connect the components to form a rectangular quantitative frame.

[0048] Step (5) When the beach surface is tilted or other reasons make it difficult to place the quantitative frame directly horizontally, take out the brackets (the actual number of brackets to be installed can be determined according to the on-site conditions, and not all of them need to be installed as long as the horizontal stability of the quantitative frame can be ensured), insert the upper end of the bracket into the groove of the component handle, insert the lower end into the beach surface, observe the two magnetic level bubbles, and adjust the depth of each bracket inserted into the beach surface as needed, so that the quantitative frame can horizontally frame the survey object.

[0049] Step (6) According to the needs of the site conditions, especially the different heights of the surveyed objects, the depth of the lower end of the bracket inserted into the beach is adjusted so that the quantitative frame is arranged horizontally in the survey area and can be adjusted to match the growth height of the leaves and other lush parts of the surveyed objects, thereby facilitating the observation of the coverage of the surveyed objects in the quantitative frame.

[0050] Step (7) Since the quantitative frame component 1 has a scale, when estimating the coverage, the scale on the component can be used to make a more accurate estimate. Specifically, the scale can be used to estimate the length and width of the plant covered / uncovered area, thereby obtaining a relatively accurate area size / percentage of the area covered / uncovered by the vertical projection of the plant's aboveground part; or, based on the scale, the area within the quantitative frame can be divided into several small areas, and the area covered / uncovered by the vertical projection of the plant's aboveground part in each small area can be obtained, thereby converting the total area covered / uncovered by the vertical projection of the plant's aboveground part in the sample plot, thereby obtaining a more accurate coverage result. In the prior art, the coverage is generally estimated by visual observation by personnel, which is affected by the personnel's experience and judgment level, resulting in a large error in the coverage result.

[0051] Step (8) When there are a large number of surveyed objects in the sample plot and the field conditions are not convenient for counting the total number of plants, a partial area can be selected for plant counting based on the actual number, and the area of ​​the selected counting area can be measured and estimated with the help of the scale on the component, so as to obtain a relatively accurate number of plants for all surveyed objects in the frame.

[0052] Step (9) During coastal surveys, the survey area is usually within the range of the tide. When the survey encounters water on the beach, if the water is deep or turbid, accurate measurement of plant height is often difficult. Specifically, plant height measurement usually uses a tape measure (relatively soft) and it is difficult / impossible to observe whether the end of the tape measure that is placed underwater has reached the bottom of the stem of the plant being measured or whether the underwater part of the tape measure is upright, which affects the accuracy of plant height measurement.

[0053] The quantitative frame bracket has a scale. When the bracket is placed down, when the four brackets just touch the bottom of the beach, observe and record the scale at the junction of the four brackets and the water surface, so as to obtain the underwater height of the plants in the quantitative frame. Continue to insert and fix the bracket in the bottom, and then only need to measure the height of each plant above the water surface to add up the plant height of each plant, which reduces the difficulty of measurement.

[0054] Step (10) When it is necessary to leave the quantitative frame in the survey area as a fixed sample plot, the bracket can be customized to be extended as needed. When the bracket is inserted into the beach surface, the part left below the beach surface is long enough to resist the influence of tides and bad weather, so that the quantitative frame assembly 1 can stay stably at the survey position within the required time period, which is used to ensure the consistency of tracking and monitoring the sample plot position.

[0055] Step (11) When it is necessary to fix the sample plot for investigation, only the bracket can be left on the beach (the bracket can be customized to be extended as needed). Each time the survey is conducted, the components are assembled on the bracket before measurement. Because the position of the bracket does not change, the quantitative frame after assembly is consistent with the position of the previous survey or the deviation is very small, which can ensure the consistency of the tracking and monitoring sample plot position. In addition, the solution of leaving only the bracket saves the number of components used and reduces the magnitude of the destructive external forces such as tidal erosion on the bracket, thereby improving the stability of the bracket.

[0056] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-purpose coastal salt marsh survey quantitative frame, characterized by: The invention comprises a set of quantitative frame components (1) and a set of quantitative frame brackets (8), wherein the number of the quantitative frame components (1) is 4, 6 or 8; the number of the quantitative frame brackets (8) is 4, 6 or 8, and the quantitative frame components (1) are used to support and fix the quantitative frame components (1); the quantitative frame components (1) are connected end to end to form a rectangular frame structure; one end of the quantitative frame component (1) is a component head end (2); the other end of the quantitative frame component (1) is a component tail plate (3); the middle part of the quantitative frame component (1) is a component handle (4); the size of the component head end (2) is adapted to that of the component tail plate (3); the quantitative frame bracket (8) is vertically connected to the component handle (4) to support and fix the quantitative frame component (1).

2. The multi-purpose coastal salt marsh survey quantitative frame according to claim 1, characterized in that: The main body length of the quantitative frame component (1) is 50 cm.

3. The multi-purpose coastal salt marsh survey quantitative frame according to claim 1, characterized in that: The quantitative frame component (1) is provided with a component scale (7) for accurate measurement and estimation.

4. The multi-purpose coastal salt marsh survey quantitative frame according to claim 1, characterized in that: Both the component head end (2) and the component tail plate (3) of the quantitative frame component (1) are installed with embedded magnet sheets / blocks, which are used to achieve magnetic connection between the quantitative frame components (1) and improve the convenience and stability of assembly.

5. The multi-purpose coastal salt marsh survey quantitative frame according to claim 1, characterized in that: The component tail plate (3) is composed of a side plate (31) and a bottom plate (32), and the width of the side plate (31) is consistent with the width of the quantitative frame component (1).

6. The multi-purpose coastal salt marsh survey quantitative frame according to claim 1, characterized in that: The component handle (4) is provided with a groove (5), and the top end of the quantitative frame bracket (8) is plugged into and fitted into the groove (5).

7. The multi-purpose coastal salt marsh survey quantitative frame according to claim 1, characterized in that: The quantitative frame bracket (8) is made of corrosion-resistant and water-resistant material.

8. The multi-purpose coastal salt marsh survey quantitative frame according to claim 1, characterized in that: The quantitative frame component (1) is provided with a magnetic level bubble (6) near the component handle (4), the magnetic level bubble (6) having a magnetic strip, the magnetic strip being adsorbed on the component handle (4), and a corresponding magnetic sheet being embedded on the inner surface wall of the component handle (4).

9. A method for using a multi-purpose coastal salt marsh survey quantitative frame, used for the multi-purpose coastal salt marsh survey quantitative frame according to any one of claims 1 to 8, characterized in that: The steps include: S1. At the survey location, combine the quantitative frame components into a rectangular frame structure and arrange it horizontally, using a magnetic level bubble to assist in adjusting the horizontal position; S2. According to the height of the survey object and the on-site environment, adjust the depth of the quantitative frame bracket inserted into the beach surface to make the quantitative frame assembly stable and adapt to the growth position of the survey object; S3, using the scales on the quantitative frame assembly and the bracket to accurately measure the coverage and plant height; S4. When it is necessary to fix the quantitative frame assembly, you can choose to leave the bracket in the investigation area to facilitate accurate positioning and continuous monitoring of subsequent investigations.

10. The method for using the multi-purpose coastal salt marsh survey quantitative frame according to claim 9, characterized in that: When assembling 4-component quantitative frame assemblies, the head end of each quantitative frame assembly is magnetically adsorbed and connected to the side plate of the tail plate of the adjacent assembly to form a 90-degree connection; when assembling 6-component or 8-component quantitative frame assemblies, the components are magnetically adsorbed and connected in the horizontal direction and the 90-degree direction to ensure that the components are closely aligned and stable.

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