Method for measuring aboveground biomass of shrub

Abstract

The invention discloses a shrub above-ground biomass determination method which comprises the following steps: arranging three shrub quadrat with the area of 10 * 10 square meters in each shrub and grass combination area, randomly selecting three plants with different sizes and healthy growth vigor as standard plants for each shrub species in each quadrat, cutting the above-ground parts of the plants close to the ground, and determining the above-ground biomass of the shrub by using the above-ground biomass of the shrub. Performing branch and leaf separation treatment on the sheared part by using a branch and leaf separator, cleaning branches and leaves, putting the cleaned branches and leaves in a drying oven for fixation for 20 minutes at 105 DEG C, then reducing the temperature to 65 DEG C, drying the sample until the weight is constant, weighing the dried sample, and taking out the sample; the obtained weight is the overground biomass of the standard plant, and the biomass of the community shrubs is estimated through the height and the crown breadth. The device is used for solving the problems that in the prior art, in the branch and leaf separation process, part of leaves splash out along with branches, overall collection of the leaves is inconvenient, and the accuracy of the measurement result of community shrub biomass is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of biomass measurement of ecological investigation, and particularly relates to a method for measuring aboveground biomass of shrubs. BACKGROUND

[0002] There is a positive feedback regulation between community structure and surface sand layer erosion. How to intervene and optimize shrub-grass configuration combination to form an optimal review community and maximize the water use efficiency of the community is a key problem for the collaborative restoration and ecological function improvement of desert ecosystems. Through investigation of plant community species composition and biomass in different seasons of the desert ecosystem, combined with investigation of livestock intake and forage preference, the shrub-grass configuration technology is optimized to realize "grass-livestock balance".

[0003] The determination of plant community species composition and biomass includes the determination of shrub aboveground biomass, herb aboveground biomass and litter biomass, underground biomass and soil sample collection. In the growing season (May-October), the vegetation community composition and structure characteristics are investigated in each livestock optimized combination management area, i.e. different shrub-grass configuration combination research area (shrub-grass combination area) through the traditional quadrat investigation method. In the traditional shrub aboveground biomass determination method, the aboveground part of the plant is cut off for branch and leaf separation. After washing and drying to constant weight, the weight is measured. The obtained weight is the standard plant biomass, and then the community shrub biomass can be calculated.

[0004] The traditional branch and leaf separation method is to manually remove the leaves from the branches, which requires a lot of time. At present, there are branch and leaf separation machines for branch and leaf separation. However, due to the rapid rotation of the conveying roller in the branch and leaf separation machine, the branches are quickly discharged from the machine, which brings out part of the leaves. The conveying roller and the separation roller also throw out the leaves. In addition, part of the leaves are left in the machine, which is not convenient for complete collection of the leaves, which reduces the weight of the standard plant biomass and affects the determination result of the community shrub biomass. SUMMARY

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present application provides a method for measuring aboveground biomass of shrubs to solve the problem of the prior art that part of the leaves are splashed out with the branches in the branch and leaf separation process, which is not convenient for the overall collection of the leaves and reduces the accuracy of the determination result of the community shrub biomass.

[0007] (2) Technical solutions

[0008] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a method for measuring aboveground biomass of shrubs, comprising the following steps:

[0009] S1, determining sample plot: 3 shrub sample plots are set in each shrub-grass combination area, with an area of 10*10 square meters;

[0010] S2, selecting sample: 3 plants of each shrub species with different sizes and healthy growth are randomly selected in each sample plot as standard plants;

[0011] S3, sampling: the height and crown width of the plants are measured, and the above-ground parts of the plants are cut and then separated by a branch and leaf separator, and the branches and leaves are cleaned;

[0012] S4, drying: the cleaned branches and leaves are placed in an oven at 105°C for 20 minutes, and then the temperature is reduced to 65°C, and the sample is dried until the constant weight is reached;

[0013] S5, weighing: the dried sample branches and leaves are weighed separately, and the obtained weight is the above-ground biomass of the standard plant;

[0014] S6, calculation: a standard plant above-ground biomass equation is established to estimate the shrub biomass of the community through height and crown width.

[0015] In step S3, the branch and leaf separator comprises:

[0016] a separation bin and a cleaning bin, the separation bin is communicated with a plant inlet and a branch outlet, and the cleaning bin is located below the separation bin and communicated with the separation bin;

[0017] a branch and leaf separation mechanism arranged in the interior of the separation bin and used for separating the branches and leaves of the plants, the branch and leaf separation mechanism comprises:

[0018] a plurality of conveying components, the conveying components are used for conveying the plants from the plant inlet to the branch outlet, and the conveying components comprise:

[0019] a plurality of conveying rollers, the conveying rollers are arranged in pairs in correspondence with each other, the conveying rollers are rotatably arranged in the interior of the separation bin, and the two conveying rollers rotate oppositely;

[0020] a plurality of separation components, the separation components are arranged at intervals with the conveying components, the separation components are used for separating the branches and leaves of the plants in cooperation with the conveying components, and the separation components comprise:

[0021] a plurality of separation rollers, the separation rollers are arranged in pairs in correspondence with each other, the separation rollers are rotatably arranged in the interior of the separation bin, and the separation rollers are fixedly connected with a plurality of protrusions on the exterior thereof and used for knocking off the leaves on the branches;

[0022] The cleaning mechanism is arranged on the cleaning bin and used for cleaning the separated leaves, and the cleaning mechanism comprises:

[0023] A water storage tank is arranged below the cleaning bin, the bottom of the cleaning bin is communicated with the water storage tank through a drain pipe, a valve is arranged on the drain pipe, and a filter element for filtering the discharged sewage is arranged in the water storage tank;

[0024] A water feeding pipe is arranged inside the branch collecting bin and above the branch and leaf separating mechanism, and the water storage tank is communicated with a conveying device for feeding water to the water feeding pipe;

[0025] A filter screen is arranged inside the cleaning bin in an inclined manner, the cleaning bin is provided with a cleaning opening, the bottom wall of the cleaning opening corresponds to the position of the lower side of the filter screen, and an opening and closing plate one is arranged at the cleaning opening;

[0026] An air blowing pipe is arranged inside the cleaning bin and below the filter screen, the air blowing pipe is communicated with an external air source, and is used for blowing air into the water in the cleaning bin to make the water roll to clean the leaves.

[0027] In order to block and collect the branches and leaves, the separating bin is communicated with a branch collecting bin for collecting branches through a branch outlet, the bottom of the branch collecting bin is communicated with the cleaning bin through a recycling tank, the recycling tank is used for allowing the leaves discharged with the branches to slide into the inside of the cleaning bin, the branch collecting bin is provided with a branch collecting opening for collecting branches, and an opening and closing plate two is arranged at the branch collecting opening.

[0028] In order to further assist in collecting the leaves, the branch and leaf separator further comprises a back blowing mechanism, the back blowing mechanism is used for blowing air to the branch outlet and the recycling tank, and the back blowing mechanism comprises:

[0029] A back blowing pipe is arranged inside the branch collecting bin, the back blowing pipe is provided with an air outlet for blowing air to the branch outlet and the recycling tank, and the back blowing pipe is communicated with an external air source.

[0030] In order to pre-dry the leaves, the branch and leaf separator further comprises a preheating box, a heater is arranged in the inside of the preheating box, the back blowing pipe and the air blowing pipe are both communicated with the preheating box, and the preheating box is communicated with an external air source.

[0031] (Three) beneficial effects

[0032] Compared with the prior art, the present application provides a shrub aboveground biomass determination method, which has the following

[0033] Beneficial effects:

[0034] 1. In this invention, shrubs to be separated are pushed into the separation chamber through the plant inlet. The rotation of the conveying roller moves the plant towards the branch outlet. At the same time, the leaves are knocked off by the rotation of the protrusion driven by the separation roller, thus separating the branches and leaves. The leaves fall into the cleaning chamber through the gap between the conveying roller and the separation roller. The branches enter the branch collection chamber through the branch outlet, thus collecting the separated branches and leaves separately. Some leaves splashed out from the branch outlet with the branches fall into the cleaning chamber through the recycling trough, ensuring the integrity of the leaf collection and thus ensuring the accuracy of the biomass measurement results of the shrub community.

[0035] 2. In this invention, water in the storage tank is transported to the inside of the water delivery pipe through a conveying device, and then sent into the inside of the branch collection chamber and the separation chamber through the water outlet. The branches in the branch collection chamber are rinsed, and some leaves splashed into the branch collection chamber are flushed into the inside of the cleaning chamber through the recovery tank. The water in the separation chamber washes the leaves on the surface of the conveying roller and the separation roller into the inside of the cleaning chamber for collection, thereby further ensuring the integrity of the leaf collection and thus ensuring the accuracy of the biomass measurement results of the community shrubs.

[0036] 3. In this invention, clean water enters the cleaning chamber and rises above the filter screen. Air is supplied to the air blower through the air source, forming a large number of bubbles in the water inside the cleaning chamber, causing the water to tumble and clean the blades inside the cleaning chamber. Then, the valve on the drain pipe is opened, allowing the wastewater generated during cleaning to flow back into the water storage tank. The filter screen blocks the blades, causing dust and impurities to fall off and be discharged through the drain pipe. The wastewater is filtered by the filter element, and the filtered clean water can be reused.

[0037] 4. In this invention, air is supplied to the inside of the air blowing pipe through an air source. The air blowing pipe blows air to the branch outlet and the recycling tank, reducing the splashing of leaves at the branch outlet. The leaves in the branch collection chamber are blown into the cleaning chamber through the recycling tank, further improving the integrity of leaf collection. At the same time, the dust carried by the plant is blown into the cleaning chamber and carried by the sewage into the filter element for collection, reducing the accumulation of dust and impurities in the branch collection chamber and causing subsequent pollution of branches and leaves.

[0038] 5. In this invention, the air entering the preheating chamber is heated by a heater. The hot air enters the interior of the blowing pipe and the blower pipe. After the wastewater is discharged from the cleaning chamber after cleaning, the hot air is blown onto the leaves above the filter screen through the blower pipe to preheat them, reducing the moisture on their surface and thus reducing the adhesion of the leaves. This also facilitates the subsequent drying of the leaves. At the same time, the hot air blown out by the blowing pipe and the blower pipe heats and dries the interior of the cleaning chamber and other components such as the leaf separation mechanism, reducing the adhesion of the leaves caused by moisture and making it easier for the leaves to fall onto the filter screen for collection. Attached Figure Description

[0039] Figure 1 Structure diagram of the first perspective of the whole application;

[0040] Figure 2 Structure diagram of the second perspective of the whole application;

[0041] Figure 3 Structure diagram of the local section of the whole application;

[0042] Figure 4 Structure diagram of the separated bin, cleaning bin, filter screen and branch-leaf separating mechanism of the whole application;

[0043] Figure 5 Structure diagram of the cleaning bin and cleaning mechanism of the whole application;

[0044] Figure 6 Structure diagram of the cleaning bin, branch collecting bin, preheating box and back-blowing mechanism of the whole application.

[0045] In the figure:

[0046] 1, separating bin; 2, cleaning bin; 3, plant inlet; 4, branch outlet; 5, branch collecting bin; 6, opening and closing plate two; 7, preheating box; 8, heater; 9, recovery tank;

[0047] 101, conveying roller; 102, separating roller; 103, protrusion; 104, transmission gear;

[0048] 201, water storage tank; 202, water feeding pipe; 203, filter screen; 204, air blowing pipe; 205, drainage pipe; 206, filter element; 207, opening and closing plate one; 208, conveying device;

[0049] 301, back-blowing pipe. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0051] Please refer to Figures 1 to 6 A method for measuring above-ground biomass of shrubs, comprising the following steps:

[0052] S1, determining sample plots: setting 3 shrub sample plots in each shrub-grass combined area, with a sample plot area of 10*10 square meters;

[0053] S2, Sampling: In each sample plot, 3 plants of each shrub species with different sizes and healthy growth were randomly selected as standard plants;

[0054] S3, Sampling: The height and crown width of the plants were measured, and the aboveground parts of the plants were cut and separated into branches and leaves using a branch and leaf separator, and then the branches and leaves were washed;

[0055] S4, Drying: The washed branches and leaves were placed in an oven at 105°C for 20 minutes to fix the color, and then the temperature was reduced to 65°C, and the samples were dried until a constant weight was reached;

[0056] S5, Weighing: The dried samples of branches and leaves were weighed separately, and the obtained weight was the aboveground biomass of the standard plants;

[0057] S6, Measurement: A standard plant aboveground biomass equation was established to estimate the community shrub biomass based on height and crown width.

[0058] Referring to Figures 1 to 6 In the above step S3, the branch and leaf separator includes a separation bin 1, a washing bin 2, a branch and leaf separation mechanism, and a washing mechanism.

[0059] Referring to Figures 1 to 4 The separation bin 1 is connected with a plant inlet 3 and a branch outlet 4, and the washing bin 2 is located below the separation bin 1 and is connected with the separation bin 1. The cut plant aboveground parts are sent into the inside of the separation bin 1 through the plant inlet 3, and the branches and leaves are separated by the branch and leaf separation mechanism. The separated leaves fall into the washing bin 2 below the separation bin 1 for subsequent washing and collection, and the branches are discharged from the separation bin 1 through the branch outlet 4.

[0060] Referring to Figures 1 to 4The branch and leaf separating mechanism is arranged in the interior of the separating bin 1 and is used for separating the branches and leaves of the plants. The branch and leaf separating mechanism comprises conveying components and separating components. The conveying components are arranged in plurality. The conveying components are used for conveying the plants from the plant inlet 3 to the branch outlet 4. The conveying components comprise conveying rollers 101. The conveying rollers 101 are arranged in correspondence with each other in up and down directions. The conveying rollers 101 are rotatably arranged in the interior of the separating bin 1. The two conveying rollers 101 are relatively rotated. The conveying gap positions formed between the plant inlet 3, the branch outlet 4 and the two conveying rollers 101 in up and down directions correspond to each other. The separating components are arranged in plurality. The separating components are arranged in interval with the conveying components. The separating components are used for separating the branches and leaves of the plants in cooperation with the conveying components. The separating components comprise separating rollers 102. The separating rollers 102 are arranged in correspondence with each other in up and down directions. The separating rollers 102 are rotatably arranged in the interior of the separating bin 1. The separating rollers 102 are fixedly connected with a plurality of protrusions 103 on the exterior thereof. The protrusions 103 are used for knocking off the leaves on the branches. The conveying rollers 101 and the separating rollers 102 are arranged in pairs and in interval. The end portions of the conveying rollers 101 and the separating rollers 102 are fixedly connected with transmission gears 104. The two transmission gears 104 in up and down directions adjacent to each other are engaged. The relative rotation between the two conveying rollers 101 or the two separating rollers 102 in the same group is realized. The two conveying rollers 101 adjacent to each other or the two separating rollers 102 adjacent to each other are transmissionally connected through a transmission wheel and a transmission belt or a sprocket and a chain. The branch and leaf separating mechanism is provided with a motor used for driving the conveying rollers 101 or the separating rollers 102 to rotate. The conveying rollers 101 and the separating rollers 102 are rotated through the transmission action of the sprocket and the chain and the transmission action of the transmission gears 104. The conveying rollers 101 are provided with anti-skid lines on the surface thereof. The conveying of the plants can be realized. The leaves on the plants are knocked off through the rotation of the protrusions 103 driven by the separating rollers 102. The separating rollers 102 and the conveying rollers 101 are arranged in interval. The conveying and separating purposes of the plants are realized. The damage of the leaves by the machine is reduced. The branch and leaf separating mechanism is the original structure of the branch and leaf separating machine in the prior art known by the person skilled in the art. The separation of the branches and leaves of the plants can be realized.

[0061] Please refer to Figures 1 to 6For the blocking collection of branches and leaves, the separating bin 1 is communicated with a branch collecting bin 5 for collecting branches through the branch outlet 4, the bottom of the branch collecting bin 5 is communicated with the cleaning bin 2 through the recovery groove 9 for the leaves falling into the inside of the cleaning bin 2 along with the branches, the branch collecting bin 5 is provided with a branch collecting opening for collecting branches, the branch collecting opening is provided with the opening and closing plate two 6, the conveying roller 101 sends the branches into the inside of the branch collecting bin 5 through the branch collecting opening, compared with the current branch and leaf separating machine, the branch collecting bin 5 is added to collect the branches, at the same time, the part of leaves splashed along with the branches is blocked and collected, the splashed leaves are small in weight and inertia, mainly concentrated in the position close to the branch outlet 4, that is, the position of the recovery groove 9, a plurality of blocking rods 10 are arranged in the recovery groove 9, the branches are blocked and the leaves pass through, the leaves slide along the recovery groove 9 to the inside of the cleaning bin 2, so that the leaves are completely collected in the inside of the cleaning bin 2 and cleaned.

[0062] Please refer to Figures 1 to 6The cleaning mechanism is arranged on the cleaning bin 2 and used for cleaning the separated leaves. The cleaning mechanism comprises a water storage tank 201, a water feeding pipe 202, a filter screen 203 and an air blowing pipe 204. The water storage tank 201 is arranged below the cleaning bin 2. The bottom of the cleaning bin 2 is communicated with the water storage tank 201 through a drain pipe 205. A valve is arranged on the drain pipe 205. The inside of the water storage tank 201 is provided with a filtering piece 206 used for filtering the discharged sewage. The filtering piece 206 can be a stainless steel cylinder type or a box type filter screen 203. The filtering piece 206 is arranged at the water outlet end of the drain pipe 205. The sewage discharged from the drain pipe 205 enters the inside of the filtering piece 206 for filtering and then enters the inside of the water storage tank 201. The dust and impurities are collected in the inside of the filtering piece 206. A replacement opening for replacing the filtering piece 206 is formed on the water storage tank 201. A replacement plate is arranged at the replacement opening. The water feeding pipe 202 is arranged in the inside of the branch collecting bin 5 and the separating bin 1 and above the branch and leaf separating mechanism. The water storage tank 201 is communicated with a conveying device 208 used for feeding water to the water feeding pipe 202. The conveying device 208 can be a water pump. The water suction port of the water pump is located at the bottom of the water storage tank 201. The water outlet of the water pump is communicated with the water feeding pipe 202. The filter screen 203 is arranged in the inside of the cleaning bin 2 in an inclined manner. The cleaning bin 2 is provided with a cleaning opening. The bottom wall of the cleaning opening corresponds to the position of the lower side of the filter screen 203. An opening and closing plate one 207 is arranged at the cleaning opening. The air blowing pipe 204 is arranged in the inside of the cleaning bin 2 and below the filter screen 203. The air blowing pipe 204 is communicated with an external air source and used for blowing air into the water in the cleaning bin 2 to make the water roll to clean the leaves. A one-way valve is arranged on the air blowing pipe 204 to avoid the water in the cleaning bin 2 flowing back to the inside of the air blowing pipe 204. The leaves fallen from the separating roller 102 fall into the cleaning bin 2 and above the filter screen 203. The clean water in the water storage tank 201 is fed into the inside of the water feeding pipe 202 through the conveying device 208. A plurality of spray heads are arranged on the water feeding pipe 202 to spray water in the inside of the branch collecting bin 5 and the separating bin 1 to assist the leaves splashed from the branch collecting bin 5 and the dust and impurities to be flushed into the inside of the cleaning bin 2 through the recovery groove 9, further improve the completeness of the leaf collection and flush the branches in the branch collecting bin 5. The water sprayed above the branch and leaf separating mechanism flushes the leaves remaining on the surfaces of the conveying roller 101 and the separating roller 102 and the inner wall of the separating bin 1 to fall into the inside of the cleaning bin 2, further ensure the completeness of the leaf collection and flush the separating bin 1 and the branch and leaf separating mechanism to reduce the residues of the dust and impurities in the branch and leaf separating mechanism. The water sprayed in the branch collecting bin 5 and the separating bin 1 finally flows into the inside of the cleaning bin 2. The drain pipe 205 is in a closed state. The water level in the cleaning bin 2 is higher than the filter screen 203. The leaves are all located in the water. The external air source feeds air to the air blowing pipe 204 to make the water in the cleaning bin 2 generate a large amount of bubbles to roll to clean the leaves. After a period of time, the drain pipe 205 is opened through the valve.The sewage is made to pass through the drain pipe 205 into the filter 206 and flow back to the water storage tank 201 for recycling, the filter screen 203 blocks the leaves, and dust and impurities are discharged with the water, then the opening and closing plate one 207 and the opening and closing plate two 6 are opened, and the cleaned branches and leaves are taken out for collection.

[0063] Please refer to Figures 1 to 6 To further assist in collecting the leaves, the branch and leaf separator further comprises a back blowing mechanism for blowing air to the branch outlet 4 and the recovery tank 9, the back blowing mechanism comprises a back blowing pipe 301, the back blowing pipe 301 is arranged inside the branch collection bin 5, the back blowing pipe 301 is provided with an air outlet for blowing air to the branch outlet 4 and the recovery tank 9, the back blowing pipe 301 is in communication with an external air source, air is sent to the back blowing pipe 301 through the external air source, so that air is blown to the branch outlet 4 and the recovery tank 9, there is a blowing force from the branch outlet 4 into the separation bin 1, so as to reduce the splashing of leaves with branches, the leaves entering the branch collection bin 5 are blown into the cleaning bin 2 from the recovery tank 9 by the back blowing pipe 301 for subsequent cleaning, so as to facilitate the complete collection of leaves, the inside of the branch collection bin is fixedly connected with a protective net, the protective net is located above the branch outlet 4, and the back blowing pipe 301 is located above the protective net, so as to avoid impact damage to the back blowing pipe 301 when the branches are discharged from the separation bin 1, and water and air can pass through the protective net to wash and blow the branches and leaves.

[0064] Please refer to Figures 1 to 6 To pre-dry the leaves, the branch and leaf separator further comprises a preheating box 7, a heater 8 is installed inside the preheating box 7, the back blowing pipe 301 and the air blowing pipe 204 are both in communication with the preheating box 7, the preheating box 7 is in communication with an external air source, the air source sends air to the inside of the preheating box 7, the delivered air is heated by the heater 8, after cleaning, hot air is blown out upwardly through the air blowing pipe 204, which assists in blowing off the moisture on the cleaned leaves, facilitating subsequent drying of the leaves, at the same time, the hot air heats and dries the cleaning bin 2 and the separation bin 1, the back blowing pipe 301 also blows hot air into the inside of the branch collection bin 5, reducing the residual moisture in the cleaning bin 2, thereby reducing the adhesion of the leaves, facilitating subsequent collection of the leaves.

[0065] The working principle or use flow of the branch and leaf separator is that the cut plants are sent into the inside of the separation bin 1 through the plant inlet 3, the plants are located in the conveying gap between the upper and lower conveying rollers 101, the conveying rollers 101 and the separation rollers 102 rotate, the conveying rollers 101 convey the plants, the separation rollers 102 drive the protrusions 103 to rotate to knock off the leaves, the knocked-off leaves fall into the inside of the cleaning bin 2 through the gap between the separation rollers 102 and the conveying rollers 101, and the branches after the leaves are stripped are discharged from the branch outlet 4 to the inside of the branch collection bin 5 under the action of the conveying rollers 101.

[0066] The conveying device 208 sends the water in the water storage tank 201 to the inside of the water delivery pipe 202, which sprays water to the inside of the branch collecting bin 5 and the separating bin 1, washes the branches in the branch collecting bin 5 and the separating mechanism in the separating bin 1, and pushes the leaves in the branch collecting bin 5 and the separating bin 1 to the inside of the cleaning bin 2, where the water level is higher than the filter screen 203 and the leaves;

[0067] The air source sends air to the drying box, the hot air in the drying box enters the inside of the back blowing pipe 301 and the air blowing pipe 204, the air blowing pipe 204 sends air to the inside of the cleaning bin 2, the back blowing pipe 301 sends air to the inside of the branch collecting bin 5, and the air in the air blowing pipe 204 enters the water in the cleaning bin 2 and generates a large number of air bubbles, so that the water is stirred to clean the leaves;

[0068] After a period of cleaning, the drain pipe 205 is opened by the valve, the water in the cleaning bin 2 flows into the inside of the water storage tank 201, the sewage first enters the inside of the filter 206, the filtered clean water enters the inside of the water storage tank 201 for recycling, and the dirt is left in the inside of the filter 206, which is cleaned or replaced regularly;

[0069] With the discharge of the water in the cleaning bin 2, the hot air blown by the air blowing pipe 204 dries and preheats the leaves above the filter screen 203, and the hot air blown by the back blowing pipe 301 and the hot air blown by the air blowing pipe 204 cooperate to heat and dry the inside of the separating bin 1, the cleaning bin 2 and the branch collecting bin 5, reducing the adhesion of the leaves in the branch and leaf separator;

[0070] After a period of time, the opening and closing plate one 207 and the opening and closing plate two 6 are opened, and the cleaned branches and leaves are taken out for subsequent drying and weighing treatment.

[0071] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A method for measuring aboveground biomass of a shrub, characterized by, The method comprises the following steps: S1, determining sample plot: setting 3 shrub sample plots in each shrub-grass combination area, with a plot area of 10*10 square meters; S2, selecting sample: randomly selecting 3 plants of different sizes and healthy growth for each shrub species in each sample plot as standard plants; S3, sampling: measuring the height and crown width of the plants, cutting the aboveground part of the plants, and then separating the branches and leaves using a branch and leaf separator and cleaning the branches and leaves; S4, drying: placing the cleaned branches and leaves in an oven at 105°C for 20 minutes, then reducing the temperature to 65°C, and drying the sample until a constant weight is reached; S5, weighing: weighing the dried sample branches and leaves, and the obtained weight is the aboveground biomass of the standard plants; S6, calculating: establishing an aboveground biomass equation of the standard plants, and estimating the shrub biomass of the community through height and crown width.

2. The method for measuring aboveground biomass of shrubs according to claim 1, characterized in that, In the above step S3, the branch and leaf separator comprises: a separation bin (1) and a cleaning bin (2), the separation bin (1) is communicated with a plant inlet (3) and a branch outlet (4), and the cleaning bin (2) is located below the separation bin (1) and communicated with the separation bin (1); a branch and leaf separation mechanism arranged in the separation bin (1) for separating the branches and leaves of the plants; a cleaning mechanism arranged on the cleaning bin (2) for cleaning the separated leaves.

3. The method for measuring aboveground biomass of shrubs according to claim 2, characterized by, The branch and leaf separation mechanism comprises: a plurality of conveying components arranged for conveying the plants from the plant inlet (3) to the branch outlet (4); a plurality of separation components arranged at intervals with the conveying components and used in cooperation with the conveying components to separate the branches and leaves of the plants.

4. The method of claim 3, wherein, The conveying component comprises: two conveying rollers (101) arranged in correspondence with each other, rotatably arranged in the separation bin (1), and relatively rotated.

5. The method for measuring aboveground biomass of shrubs according to claim 4, wherein The separation component comprises: two separation rollers (102) arranged in correspondence with each other, rotatably arranged in the separation bin (1), and fixedly connected with a plurality of protrusions (103) on the outer part of the separation rollers (102) for knocking off the leaves on the branches.

6. The method for measuring aboveground biomass of shrubs according to claim 5, wherein, The separation bin (1) is communicated with a branch collection bin (5) for collecting the branches through the branch outlet (4), the bottom of the branch collection bin (5) is communicated with the cleaning bin (2) through a recovery groove (9), the recovery groove (9) is used for sliding the leaves out of the branches to the inside of the cleaning bin (2), and the branch collection bin (5) is provided with a branch collection opening for collecting the branches, and a second opening and closing plate (6) is arranged at the branch collection opening.

7. The method for measuring aboveground biomass of shrubs according to claim 6, wherein, The cleaning mechanism comprises: A water storage tank (201) is arranged below the cleaning bin (2), the bottom of the cleaning bin (2) is communicated with the water storage tank (201) through a drain pipe (205) provided with a valve, and the inside of the water storage tank (201) is provided with a filter (206) for filtering the discharged sewage; A water delivery pipe (202) is arranged inside the branch collecting bin (5) and the separation bin (1) above the branch and leaf separation mechanism, the water storage tank (201) is communicated with a conveying device (208) for delivering water to the water delivery pipe (202); A filter screen (203) is arranged obliquely inside the cleaning bin (2), the cleaning bin (2) is provided with a cleaning port, the bottom wall of the cleaning port corresponds to the position of the lower side of the filter screen (203), and the cleaning port is provided with an opening and closing plate (207); An air blowing pipe (204) is arranged inside the cleaning bin (2) below the filter screen (203), the air blowing pipe (204) is communicated with an external air source, and is used for blowing air into the water in the cleaning bin (2) to make the water roll to clean the leaves.

8. The method for measuring aboveground biomass of shrubs according to claim 7, characterized by, The branch and leaf separator further comprises a back blowing mechanism for blowing air to the branch outlet (4) and the recovery tank (9).

9. The method of claim 8, wherein, The back blowing mechanism comprises: A back blowing pipe (301) is arranged inside the branch collecting bin (5), the back blowing pipe (301) is provided with an air outlet for blowing air to the branch outlet (4) and the recovery tank (9), and the back blowing pipe (301) is communicated with an external air source.

10. The method of claim 9, wherein, The branch and leaf separator further comprises a preheating box (7), a heater (8) is installed inside the preheating box (7), the back blowing pipe (301) and the air blowing pipe (204) are both communicated with the preheating box (7), and the preheating box (7) is communicated with an external air source.

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