A method and system for measuring carbon sequestration in oil-tea camellia forests

Abstract

The present invention discloses a method and system for measuring the carbon sequestration of an oil tea forest, which belongs to the technical field of carbon sequestration measurement. The method and system include obtaining characteristic data of an oil tea forest and generating an evaluation value of the carbon sequestration capacity of the oil tea forest; obtaining soil data of a litter layer of the oil tea forest and generating a soil evaluation value of the litter layer of the oil tea forest; obtaining sampling data of the oil tea forest and generating an estimated value of the carbon sequestration of the oil tea forest; obtaining a weather influence coefficient of the oil tea forest, establishing a carbon sequestration measurement model for the oil tea forest, and generating a carbon sequestration measurement value of the oil tea forest; the method obtains an evaluation value of the carbon sequestration capacity of the oil tea forest by analyzing the canopy, branch crowns, and branches and leaves of the oil tea forest, then analyzes the soil data of the litter layer of the oil tea forest and obtains the soil evaluation value of the litter layer of the oil tea forest, and finally outputs the carbon sequestration measurement value of the oil tea forest in combination with the influence of the weather data of the oil tea forest on the carbon sequestration of the oil tea forest, thereby optimizing the measurement of the carbon sequestration of the oil tea forest and improving the accuracy of the carbon sequestration measurement of the oil tea forest.

Description

Technical Field

[0001] The present invention belongs to the technical field of carbon sequestration measurement, and in particular relates to a method and system for measuring carbon sequestration in oil-tea camellia forests. Background Art

[0002] As an important economic forest, oil tea forest not only has significant economic benefits, but also exhibits strong carbon sequestration capacity due to its unique ecological structure.

[0003] Accurately measuring the carbon sequestration of oil palm forests is of great significance for evaluating their ecological benefits, formulating carbon trading policies, and guiding forestry management. Currently, the methods for measuring the carbon sequestration of oil palm forests mainly rely on traditional biomass models and remote sensing technologies, but these methods often ignore the impact of various environmental factors on carbon sequestration, resulting in large errors in the measurement results. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method and system for measuring carbon sequestration in oil-tea camellia forests, which solve the above problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for measuring the carbon sequestration of oil tea forests, comprising the following steps:

[0006] Acquire characteristic data of the oil-tea camellia forest and generate an evaluation value of its carbon sequestration capacity; wherein the characteristic data of the oil-tea camellia forest include canopy leaf gap, branch-crown angle, and branch-leaf angle;

[0007] Acquire soil data of the oil-tea camellia forest litter layer and generate a soil evaluation value of the oil-tea camellia forest litter layer; wherein the oil-tea camellia forest litter layer data includes the number of soil decomposing microorganisms in the oil-tea camellia forest litter layer and the soil enzyme activity in the oil-tea camellia forest litter layer;

[0008] Acquire sampling data of the oil-tea camellia forest and generate an estimated carbon sequestration value of the oil-tea camellia forest; wherein the sampling data includes the number of trees in the sampling area, the diameter at breast height of the trees in the sampling area, the height of the trees in the sampling area, and the weight of the litter layer in the sampling area;

[0009] Obtain the weather impact coefficient of oil-tea camellia forest, establish the oil-tea camellia forest carbon sequestration determination model, and generate the oil-tea camellia forest carbon sequestration determination value.

[0010] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0011] A further technical solution is to obtain characteristic data of the oil-tea camellia forest and generate an evaluation value of the carbon sequestration capacity of the oil-tea camellia forest, specifically comprising the following steps:

[0012] Obtaining the canopy leaf gap of the oil-tea camellia forest and generating an assessment value of the canopy leaf gap of the oil-tea camellia forest;

[0013] Obtain the branch-crown angle of the oil-tea camellia forest and generate an evaluation value of the branch-crown angle of the oil-tea camellia forest;

[0014] Obtain the angle between branches and leaves of the oil-tea camellia forest and generate an evaluation value of the angle between branches and leaves of the oil-tea camellia forest;

[0015] Based on the evaluation value of the leaf gap in the oil tea forest canopy, the evaluation value of the branch-crown angle and the evaluation value of the branch-leaf angle of the oil tea forest, the evaluation value of the carbon sequestration capacity of the oil tea forest is generated.

[0016] According to a further technical solution, the method for generating the leaf gap assessment value of the oil-tea camellia forest canopy is as follows:

[0017] The gap difference is generated by subtracting the gap between the canopy leaves and the middle value of the standard gap range. The standard gap range refers to the size range of the canopy leaf gap without affecting sunlight penetration.

[0018] The gap difference is compared with the middle value of the standard gap range to generate the leaf gap assessment value of the oil-tea camellia forest canopy.

[0019] The method for generating the evaluation value of the oil-tea camellia forest crown angle is as follows:

[0020] Obtaining the branch crown angle of the oil tea forest, performing subtraction processing on the branch crown angle of the oil tea forest and the middle value of the branch crown angle standard range of the oil tea forest to generate the branch crown angle difference;

[0021] The difference in branch-crown angle is compared with the standard value of branch-crown angle of oil-tea camellia forest to generate the branch-crown angle assessment value of oil-tea camellia forest.

[0022] Among them, the method for generating the evaluation value of the angle between branches and leaves of the oil tea forest is specifically as follows;

[0023] Obtain the angle of branches and leaves of the oil tea forest, and perform subtraction processing on the angle of branches and leaves of the oil tea forest and the middle value of the standard angle range of branches and leaves to generate the angle difference of branches and leaves; wherein the standard angle range of branches and leaves refers to the angle range of branches and leaves of oil tea trees under normal conditions;

[0024] The angle difference between branches and leaves is compared with the middle value of the standard angle range of branches and leaves to generate the evaluation value of the angle between branches and leaves of oil-tea camellia forest.

[0025] The method for generating the carbon sequestration capacity evaluation value of the oil-tea camellia forest is as follows:

[0026] The leaf gap assessment value of the oil-tea forest canopy, the branch-crown angle assessment value and the branch-leaf angle assessment value of the oil-tea forest are weighted to generate the carbon sequestration capacity assessment value of the oil-tea forest.

[0027] A further technical solution is to obtain soil data of the oil tea forest litter layer and generate a soil evaluation value of the oil tea forest litter layer, specifically comprising the following steps:

[0028] Obtain the number of soil decomposing microorganisms in the litter layer of the oil tea forest and generate an evaluation value of the number of decomposing microorganisms;

[0029] Obtain soil enzyme activity in the litter layer of the oil-tea camellia forest and generate enzyme activity evaluation values;

[0030] The soil evaluation value of the oil tea forest litter layer is generated based on the evaluation value of the number of decomposition microorganisms and the evaluation value of enzyme activity.

[0031] In a further technical solution, the method for generating the evaluation value of the number of decomposing microorganisms is specifically as follows:

[0032] Obtaining the number of soil decomposing microorganisms in the oil-tea camellia forest litter layer, performing ratio processing on the number of soil decomposing microorganisms in the oil-tea camellia forest litter layer and the total number of microorganisms in the soil of the oil-tea camellia forest litter layer to generate a ratio of the number of decomposing microorganisms;

[0033] The difference between the ratio of decomposing microorganisms and the median value of the ratio of soil decomposing microorganisms in the litter layer of Camellia oleifera forest was processed to generate the ratio difference.

[0034] The ratio difference is processed with the median value of the soil decomposition microorganism ratio range of the oil-tea camellia forest litter layer to generate the decomposition microorganism quantity evaluation value;

[0035] The method for generating the enzyme activity evaluation value specifically includes:

[0036] Obtaining soil enzyme activity in the oil-tea camellia forest litter layer, performing difference processing on the soil enzyme activity in the oil-tea camellia forest litter layer and the middle value of the soil enzyme activity standard range to generate enzyme activity difference;

[0037] The enzyme activity difference was compared with the middle value of the soil enzyme activity standard range to generate the enzyme activity evaluation value.

[0038] A further technical solution is to obtain sampling data of the oil-tea camellia forest and generate an estimated carbon sequestration value of the oil-tea camellia forest, specifically including:

[0039] By formula , generate the estimated carbon sequestration value Cs of Camellia oleifera forest;

[0040] In the formula, DBH represents the diameter at breast height of trees in the sampling area, H represents the height of trees in the sampling area, Dg represents the weight of the litter layer in the sampling area, Pd represents the soil evaluation value of the litter layer of the oil tea forest, a is the constant coefficient of the equation, b is the exponential coefficient of the diameter at breast height DBH of trees in the sampling area, c is the exponential coefficient of the height H of trees in the sampling area, ω represents the carbon conversion factor, and η represents the ratio of the area of the sampling area to the total area of the oil tea forest.

[0041] A further technical solution is to obtain the weather impact coefficient of the oil-tea camellia forest, establish a carbon sequestration determination model for the oil-tea camellia forest, and generate a carbon sequestration determination value for the oil-tea camellia forest, specifically comprising the following steps:

[0042] Obtain the weather data of the oil-tea camellia forest and generate the weather impact coefficient of the oil-tea camellia forest;

[0043] A carbon sequestration determination model for oil palm forests was established, and the weather impact coefficient of oil palm forests, the estimated carbon sequestration value of oil palm forests and the carbon sequestration capacity evaluation value of oil palm forests were substituted into the carbon sequestration determination model to generate the carbon sequestration determination value of oil palm forests.

[0044] In a further technical solution, the expression of the oil-tea camellia forest carbon sequestration determination model is:

[0045] ;

[0046] In the expression, Sc represents the evaluation value of the carbon sequestration capacity of the oil-tea forest, Cs represents the estimated carbon sequestration value of the oil-tea forest, and Ty represents the weather impact coefficient of the oil-tea forest.

[0047] A further technical solution is that the method for generating the oil-tea camellia forest weather impact coefficient is as follows:

[0048] Obtain weather data of the oil tea forest; wherein the weather data of the oil tea forest includes average rainfall in the oil tea forest, average sunshine time in the oil tea forest, and average sunshine intensity in the oil tea forest;

[0049] The average rainfall of the oil-tea camellia forest is subtracted from the standard rainfall of the oil-tea camellia forest growth environment to generate the rainfall difference;

[0050] The rainfall difference is compared with the standard rainfall in the oil-tea camellia forest growth environment to generate the rainfall impact coefficient.

[0051] The average light duration of the oil-tea tree forest is subtracted from the standard light duration of the oil-tea tree forest growth environment to generate the light duration difference; wherein the standard light duration of the oil-tea tree forest growth environment refers to the time that the oil-tea tree forest needs to receive light per unit time under normal circumstances;

[0052] The light duration difference is compared with the standard light duration of the oil-tea camellia forest growth environment to generate the light duration influence coefficient.

[0053] The rainfall influence coefficient and the sunshine time influence coefficient are weighted to generate the oil-tea plantation weather influence coefficient.

[0054] A system for measuring carbon sequestration in oil-tea camellia forests, the system comprising:

[0055] The carbon sequestration capacity evaluation unit is used to obtain characteristic data of the oil-tea camellia forest and generate an evaluation value of the carbon sequestration capacity of the oil-tea camellia forest; wherein the characteristic data of the oil-tea camellia forest include the canopy leaf gap, the branch-crown angle, and the branch-leaf angle;

[0056] The soil evaluation unit of the oil tea forest litter layer is used to obtain soil data of the oil tea forest litter layer and generate a soil evaluation value of the oil tea forest litter layer; wherein the oil tea forest litter layer data includes the number of soil decomposing microorganisms in the oil tea forest litter layer and the soil enzyme activity in the oil tea forest litter layer;

[0057] The oil-tea camellia forest carbon sequestration estimation module is used to obtain sampling data of the oil-tea camellia forest and generate an estimated carbon sequestration value of the oil-tea camellia forest; wherein the sampling data includes the number of trees in the sampling area, the diameter at breast height of the trees in the sampling area, the height of the trees in the sampling area, and the weight of the litter layer in the sampling area;

[0058] The oil-tea camellia forest carbon sequestration measurement value generating unit is used to obtain the oil-tea camellia forest weather impact coefficient, establish the oil-tea camellia forest carbon sequestration measurement model, substitute the oil-tea camellia forest weather impact coefficient, the oil-tea camellia forest carbon sequestration estimated value and the oil-tea camellia forest carbon sequestration capacity evaluation value into the oil-tea camellia forest carbon sequestration measurement model, and generate the oil-tea camellia forest carbon sequestration measurement value;

[0059] The carbon sequestration capacity evaluation unit specifically includes:

[0060] A canopy leaf gap assessment module is used to obtain the canopy leaf gap of the oil-tea camellia forest and generate an assessment value of the canopy leaf gap of the oil-tea camellia forest;

[0061] The branch crown angle evaluation module is used to obtain the branch crown angle of the oil tea forest and generate an evaluation value of the branch crown angle of the oil tea forest;

[0062] The branch and leaf angle evaluation module is used to obtain the branch and leaf angle of the oil-tea camellia forest and generate an evaluation value of the branch and leaf angle of the oil-tea camellia forest;

[0063] The oil-tea camellia forest carbon sequestration capacity evaluation value generation module is used to generate the oil-tea camellia forest carbon sequestration capacity evaluation value based on the oil-tea camellia forest canopy leaf gap evaluation value, the oil-tea camellia forest branch crown angle evaluation value and the oil-tea camellia forest branch-leaf angle evaluation value;

[0064] The soil evaluation unit of the oil tea forest litter layer specifically includes:

[0065] The decomposition microorganism quantity analysis module is used to obtain the number of soil decomposition microorganisms in the litter layer of the oil tea forest and generate an evaluation value of the number of decomposition microorganisms;

[0066] The enzyme activity analysis module is used to obtain soil enzyme activity in the litter layer of the oil-tea camellia forest and generate enzyme activity evaluation values;

[0067] The soil evaluation value generation module of the oil-tea camellia forest litter layer is used to generate the soil evaluation value of the oil-tea camellia forest litter layer according to the evaluation value of the number of decomposing microorganisms and the evaluation value of enzyme activity;

[0068] The oil-tea camellia forest carbon sequestration measurement value generation unit specifically includes:

[0069] Weather analysis module, used to obtain weather data of oil-tea camellia forest and generate weather impact coefficient of oil-tea camellia forest;

[0070] The module for generating the carbon sequestration measurement value of the oil-tea forest is used to establish a carbon sequestration measurement model for the oil-tea forest, substitute the weather impact coefficient of the oil-tea forest, the estimated carbon sequestration value of the oil-tea forest and the carbon sequestration capacity evaluation value of the oil-tea forest into the carbon sequestration measurement model, and generate the carbon sequestration measurement value of the oil-tea forest.

[0071] The present invention provides a method and system for measuring carbon sequestration in oil-tea camellia forests, which have the following beneficial effects compared with the prior art:

[0072] The present invention obtains an evaluation value of the carbon sequestration capacity of the oil tea forest by analyzing the canopy, branch crowns, and branches and leaves of the oil tea forest, then analyzes the soil data of the litter layer of the oil tea forest to obtain a soil evaluation value of the litter layer of the oil tea forest, and finally outputs a measured value of the carbon sequestration of the oil tea forest in combination with the influence of the weather data of the oil tea forest on the carbon sequestration of the oil tea forest. The measurement of the carbon sequestration of the oil tea forest is optimized, and the accuracy of the carbon sequestration measurement of the oil tea forest is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 This is a flowchart of a method for determining carbon sequestration in oil-tea tree forests provided in an embodiment of the present invention.

[0074] Figure 2 This is a flowchart of step S10 provided in an embodiment of the present invention.

[0075] Figure 3 This is a flowchart of step S20 provided in an embodiment of the present invention.

[0076] Figure 4 This is a flowchart of step S40 provided in an embodiment of the present invention.

[0077] Figure 5 This is a flow chart of a system for measuring carbon sequestration in oil-tea camellia forests provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0078] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0079] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0080] See also Figure 1 , a method for measuring carbon sequestration in oil-tea camellia forests provided in one embodiment of the present invention, comprising the following steps:

[0081] Step S10: Acquire characteristic data of the oil-tea camellia forest and generate an evaluation value of the carbon sequestration capacity of the oil-tea camellia forest; wherein the characteristic data of the oil-tea camellia forest include canopy leaf gap, branch-crown angle, and branch-leaf angle;

[0082] Specifically, characteristic data of the oil-tea camellia forest are obtained through remote sensing technology or monitoring data. In addition, the characteristic data of the oil-tea camellia forest are all means. For example, sufficient characteristic data samples of the oil-tea camellia forest are randomly selected or selected according to a fixed rule (equally divided areas, fixed intervals, etc.) from the oil-tea camellia forest, and then these characteristic data samples are averaged to obtain the characteristic data of the oil-tea camellia forest. At the same time, these data can also reflect the characteristic conditions of the oil-tea camellia forest, that is, data collection will not be difficult due to the large area of the oil-tea camellia forest, and the characteristic conditions of the oil-tea camellia forest can be reflected to a certain extent.

[0083] Step S20: obtaining soil data of the oil tea forest litter layer and generating a soil evaluation value of the oil tea forest litter layer; wherein the oil tea forest litter layer data includes the number of soil decomposing microorganisms in the oil tea forest litter layer and the soil enzyme activity in the oil tea forest litter layer;

[0084] Step S30: Acquire sampling data of the oil-tea camellia forest and generate an estimated carbon sequestration value of the oil-tea camellia forest; wherein the sampling data includes the number of trees in the sampling area, the diameter at breast height of the trees in the sampling area, the height of the trees in the sampling area, and the weight of the litter layer in the sampling area;

[0085] Step S40: Obtain the weather impact coefficient of the oil-tea camellia forest, establish a carbon sequestration measurement model for the oil-tea camellia forest, and generate a carbon sequestration measurement value for the oil-tea camellia forest.

[0086] See also Figure 2 As a preferred embodiment of the present invention, step S10 specifically includes the following steps:

[0087] Step S11: obtaining the canopy leaf gap of the oil-tea camellia forest and generating an evaluation value of the canopy leaf gap of the oil-tea camellia forest;

[0088] Step S12: obtaining the branch-crown angle of the oil-tea camellia forest and generating an evaluation value of the branch-crown angle of the oil-tea camellia forest;

[0089] Step S13: obtaining the angle between branches and leaves of the oil-tea camellia forest and generating an evaluation value of the angle between branches and leaves of the oil-tea camellia forest;

[0090] Step S14: Generate an evaluation value of the carbon sequestration capacity of the oil tea forest based on the evaluation value of the leaf gap in the oil tea forest canopy, the evaluation value of the branch-crown angle of the oil tea forest, and the evaluation value of the branch-leaf angle of the oil tea forest.

[0091] As a preferred embodiment of the present invention, the method for generating the oil-tea camellia forest canopy leaf gap assessment value is specifically as follows:

[0092] The gap difference is generated by subtracting the gap between the canopy leaves and the middle value of the standard gap range. The standard gap range refers to the size range of the canopy leaf gap without affecting sunlight penetration.

[0093] It should be noted that the canopy leaf gap refers to the gap in space between canopy leaves; for example, if the entire canopy of the oil tea tree is regarded as a three-dimensional space to form a three-dimensional coordinate system, each canopy leaf will have a corresponding spatial coordinate, and the canopy leaf gap is the difference between adjacent spatial coordinates. The difference is then transformed (for example, the coordinate value of each axis in the coordinate is processed by difference, and then all the differences are summed up) to obtain the canopy leaf gap;

[0094] The gap difference is compared with the middle value of the standard gap range to generate the leaf gap assessment value of the oil-tea camellia forest canopy.

[0095] The method for generating the evaluation value of the oil-tea camellia forest crown angle is as follows:

[0096] Obtaining the branch crown angle of the oil tea forest, performing subtraction processing on the branch crown angle of the oil tea forest and the middle value of the branch crown angle standard range of the oil tea forest to generate the branch crown angle difference;

[0097] The difference in branch-crown angle is compared with the standard value of branch-crown angle of oil-tea camellia forest to generate the branch-crown angle assessment value of oil-tea camellia forest.

[0098] Specifically, the greater the assessed value of the canopy angle of the oil-tea camellia forest, the greater the impact of the canopy angle on the photosynthesis of the oil-tea camellia forest. Conversely, the smaller the assessed value of the canopy angle of the oil-tea camellia forest, the smaller the impact of the canopy angle on the photosynthesis of the oil-tea camellia forest. In addition, the area of light that the canopy of the oil-tea camellia forest can receive has a certain degree of influence on the photosynthesis of the oil-tea camellia forest. The larger the area, the stronger the photosynthesis, and vice versa.

[0099] Among them, the method for generating the evaluation value of the angle between branches and leaves of the oil tea forest is specifically as follows;

[0100] Obtain the angle of branches and leaves of the oil tea forest, and perform subtraction processing on the angle of branches and leaves of the oil tea forest and the middle value of the standard angle range of branches and leaves to generate the angle difference of branches and leaves; wherein the standard angle range of branches and leaves refers to the angle range of branches and leaves of oil tea trees under normal conditions;

[0101] The angle difference between branches and leaves is compared with the middle value of the standard angle range of branches and leaves to generate the evaluation value of the angle between branches and leaves of oil-tea camellia forest.

[0102] The method for generating the carbon sequestration capacity evaluation value of the oil-tea camellia forest is as follows:

[0103] The leaf gap assessment value of the oil-tea tree canopy, the branch-crown angle assessment value and the branch-leaf angle assessment value of the oil-tea tree canopy are weighted to generate the carbon sequestration capacity assessment value of the oil-tea tree canopy.

[0104] For example, by formula , generate the evaluation value Sc of the carbon sequestration capacity of the oil-tea camellia forest;

[0105] In the formula, Ga represents the evaluation value of the leaf gap in the oil-tea forest canopy, Bc represents the evaluation value of the branch-crown angle of the oil-tea forest, Bl represents the evaluation value of the branch-leaf angle of the oil-tea forest, and α, β, and γ are all weight coefficients.

[0106] See also Figure 3 As a preferred embodiment of the present invention, step S20 specifically includes the following steps:

[0107] Step S21: obtaining the number of soil decomposing microorganisms in the litter layer of the oil tea forest and generating an evaluation value of the number of decomposing microorganisms;

[0108] Step S22: obtaining soil enzyme activity in the litter layer of the oil-tea camellia forest and generating an enzyme activity evaluation value;

[0109] Step S23: Generate a soil evaluation value of the oil tea forest litter layer based on the evaluation value of the number of decomposing microorganisms and the evaluation value of enzyme activity.

[0110] As a preferred embodiment of the present invention, the method for generating the evaluation value of the number of decomposing microorganisms is specifically as follows:

[0111] Obtaining the number of soil decomposing microorganisms in the oil-tea camellia forest litter layer, performing ratio processing on the number of soil decomposing microorganisms in the oil-tea camellia forest litter layer and the total number of microorganisms in the soil of the oil-tea camellia forest litter layer to generate a ratio of the number of decomposing microorganisms;

[0112] The difference between the ratio of decomposing microorganisms and the median value of the ratio of soil decomposing microorganisms in the litter layer of Camellia oleifera forest was processed to generate the ratio difference.

[0113] The ratio difference is compared with the median value of the soil decomposition microorganism ratio range in the litter layer of the oil tea forest to generate an evaluation value of the number of decomposition microorganisms.

[0114] As a preferred embodiment of the present invention, the method for generating the enzyme activity evaluation value specifically includes:

[0115] Obtaining soil enzyme activity in the oil-tea camellia forest litter layer, performing difference processing on the soil enzyme activity in the oil-tea camellia forest litter layer and the middle value of the soil enzyme activity standard range to generate enzyme activity difference;

[0116] The enzyme activity difference was compared with the middle value of the soil enzyme activity standard range to generate the enzyme activity evaluation value.

[0117] As a preferred embodiment of the present invention, step S30 specifically includes:

[0118] By formula , generate the estimated carbon sequestration value Cs of Camellia oleifera forest;

[0119] In the formula, DBH represents the tree diameter at breast height (DBH) in the sampling area, H represents the tree height in the sampling area, Dg represents the weight of the litter layer in the sampling area, Pd represents the soil evaluation value of the litter layer in the oil-tea camellia forest, a is the constant coefficient of the equation, b is the exponential coefficient of the tree diameter at breast height (DBH) in the sampling area, c is the exponential coefficient of the tree height (H) in the sampling area, ω represents the carbon conversion factor, and η represents the ratio of the sampling area to the total area of the oil-tea camellia forest.

[0120] It should be explained that the constant coefficient a of the equation reflects the preliminary relationship between tree biomass and its characteristics (such as diameter and height), and its value can be determined based on the growth rate and density of the tree. The exponential coefficient b of the tree diameter at breast height (DBH) in the sampling area reflects the nonlinear relationship (power law relationship) between tree biomass and diameter, that is, trees with larger diameters may have a faster biomass increase rate than small trees. The exponential coefficient c of the tree height H in the sampling area reflects the strength of the relationship between tree height and biomass. In addition, different tree species have different growth characteristics, and the relationship between biomass and diameter and height also varies.

[0121] In forest ecology, biomass (e.g., dry weight of trees, total wood volume, etc.) refers to the mass of organic matter within a plant. Since most biomass is composed of organic carbon, the carbon conversion factor (CTF) can be used to estimate the carbon storage of trees or forests. Typically, 50% of plant biomass is carbon, so the CTF is typically set at 50%.

[0122] See also Figure 4 As a preferred embodiment of the present invention, step S40 specifically includes the following steps:

[0123] Step S41: Acquire the weather data of the oil-tea camellia forest and generate the oil-tea camellia forest weather impact coefficient;

[0124] Step S42: establishing a camellia oil forest carbon sequestration determination model, substituting the camellia oil forest weather impact coefficient, the camellia oil forest carbon sequestration estimated value, and the camellia oil forest carbon sequestration capacity evaluation value into the camellia oil forest carbon sequestration determination model to generate a camellia oil forest carbon sequestration determination value;

[0125] The carbon sequestration model for oil-tea camellia forest is expressed as follows:

[0126] ;

[0127] In the expression, Sc represents the evaluation value of the carbon sequestration capacity of the oil-tea forest, Cs represents the estimated carbon sequestration value of the oil-tea forest, and Ty represents the weather impact coefficient of the oil-tea forest.

[0128] As a preferred embodiment of the present invention, the method for generating the oil-tea camellia forest weather impact coefficient is specifically as follows:

[0129] Obtain weather data of the oil tea forest; wherein the weather data of the oil tea forest includes average rainfall in the oil tea forest, average sunshine time in the oil tea forest, and average sunshine intensity in the oil tea forest;

[0130] The average rainfall of the oil-tea camellia forest is subtracted from the standard rainfall of the oil-tea camellia forest growth environment to generate the rainfall difference;

[0131] The rainfall difference is compared with the standard rainfall in the oil-tea camellia forest growth environment to generate the rainfall impact coefficient.

[0132] The average light duration of the oil-tea tree forest is subtracted from the standard light duration of the oil-tea tree forest growth environment to generate the light duration difference; wherein the standard light duration of the oil-tea tree forest growth environment refers to the time that the oil-tea tree forest needs to receive light per unit time under normal circumstances;

[0133] It should be noted that the standard sunlight duration for the growth environment of oil tea forests is generally the time the oil tea forests need to receive sunlight under normal weather conditions in the area where the oil tea forests are located. For example, if there are many cloudy days in a certain area within a certain period of time (one month, six months or one year), the oil tea forests may not receive the standard sunlight duration, which may lead to insufficient photosynthesis of the oil tea trees in the oil tea forests and a decrease in carbon sequestration.

[0134] The light duration difference is compared with the standard light duration of the oil-tea camellia forest growth environment to generate the light duration influence coefficient.

[0135] The rainfall influence coefficient and the sunshine time influence coefficient are weighted to generate the oil-tea plantation weather influence coefficient.

[0136] See also Figure 5 The present invention also provides a system for measuring carbon sequestration in oil-tea camellia forests, the system comprising:

[0137] The carbon sequestration capacity evaluation unit is used to obtain characteristic data of the oil-tea camellia forest and generate an evaluation value of the carbon sequestration capacity of the oil-tea camellia forest; wherein the characteristic data of the oil-tea camellia forest include the canopy leaf gap, the branch-crown angle, and the branch-leaf angle;

[0138] The soil evaluation unit of the oil tea forest litter layer is used to obtain soil data of the oil tea forest litter layer and generate a soil evaluation value of the oil tea forest litter layer; wherein the oil tea forest litter layer data includes the number of soil decomposing microorganisms in the oil tea forest litter layer and the soil enzyme activity in the oil tea forest litter layer;

[0139] The oil-tea camellia forest carbon sequestration estimation module is used to obtain sampling data of the oil-tea camellia forest and generate an estimated carbon sequestration value of the oil-tea camellia forest; wherein the sampling data includes the number of trees in the sampling area, the diameter at breast height of the trees in the sampling area, the height of the trees in the sampling area, and the weight of the litter layer in the sampling area;

[0140] The oil-tea forest carbon sink measurement value generation unit is used to obtain the oil-tea forest weather impact coefficient, establish an oil-tea forest carbon sink measurement model, substitute the oil-tea forest weather impact coefficient, the oil-tea forest carbon sink estimated value and the oil-tea forest carbon sequestration capacity evaluation value into the oil-tea forest carbon sink measurement model, and generate the oil-tea forest carbon sink measurement value.

[0141] As a preferred embodiment of the present invention, the carbon sequestration capacity evaluation unit specifically includes:

[0142] A canopy leaf gap assessment module is used to obtain the canopy leaf gap of the oil-tea camellia forest and generate an assessment value of the canopy leaf gap of the oil-tea camellia forest;

[0143] The branch crown angle evaluation module is used to obtain the branch crown angle of the oil tea forest and generate an evaluation value of the branch crown angle of the oil tea forest;

[0144] The branch and leaf angle evaluation module is used to obtain the branch and leaf angle of the oil-tea camellia forest and generate an evaluation value of the branch and leaf angle of the oil-tea camellia forest;

[0145] The module for generating the carbon sequestration capacity evaluation value of the oil-tea forest is used to generate the carbon sequestration capacity evaluation value of the oil-tea forest based on the leaf gap evaluation value of the oil-tea forest canopy, the branch-crown angle evaluation value of the oil-tea forest and the branch-leaf angle evaluation value of the oil-tea forest.

[0146] As a preferred embodiment of the present invention, the soil evaluation unit of the oil tea forest litter layer specifically includes:

[0147] The decomposition microorganism quantity analysis module is used to obtain the number of soil decomposition microorganisms in the litter layer of the oil tea forest and generate an evaluation value of the number of decomposition microorganisms;

[0148] The enzyme activity analysis module is used to obtain soil enzyme activity in the litter layer of the oil-tea camellia forest and generate enzyme activity evaluation values;

[0149] The soil evaluation value generation module of the oil-tea camellia forest litter layer is used to generate the soil evaluation value of the oil-tea camellia forest litter layer according to the evaluation value of the number of decomposition microorganisms and the evaluation value of enzyme activity.

[0150] As a preferred embodiment of the present invention, the oil-tea camellia forest carbon sequestration measurement value generating unit specifically includes:

[0151] Weather analysis module, used to obtain weather data of oil-tea camellia forest and generate weather impact coefficient of oil-tea camellia forest;

[0152] The module for generating the carbon sequestration measurement value of the oil-tea forest is used to establish a carbon sequestration measurement model for the oil-tea forest, substitute the weather impact coefficient of the oil-tea forest, the estimated carbon sequestration value of the oil-tea forest and the carbon sequestration capacity evaluation value of the oil-tea forest into the carbon sequestration measurement model, and generate the carbon sequestration measurement value of the oil-tea forest.

[0153] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for measuring carbon sequestration in oil-tea camellia forests, characterized in that: The following steps are involved: Acquire characteristic data of the oil-tea camellia forest and generate an evaluation value of its carbon sequestration capacity; wherein the characteristic data of the oil-tea camellia forest include canopy leaf gap, branch-crown angle, and branch-leaf angle; Specifically: Obtaining the canopy leaf gap of the oil-tea camellia forest and generating an assessment value of the canopy leaf gap of the oil-tea camellia forest; Obtaining the branch-crown angle of the oil-tea camellia forest and generating an evaluation value of the branch-crown angle of the oil-tea camellia forest; Obtain the angle between branches and leaves of the oil-tea camellia forest and generate an evaluation value of the angle between branches and leaves of the oil-tea camellia forest; The carbon sequestration capacity evaluation value of the oil-tea camellia forest is generated based on the leaf gap evaluation value of the oil-tea camellia forest canopy, the branch-crown angle evaluation value of the oil-tea camellia forest, and the branch-leaf angle evaluation value of the oil-tea camellia forest. Acquire soil data of the oil-tea camellia forest litter layer and generate a soil evaluation value of the oil-tea camellia forest litter layer; wherein the oil-tea camellia forest litter layer data includes the number of soil decomposing microorganisms in the oil-tea camellia forest litter layer and the soil enzyme activity in the oil-tea camellia forest litter layer; Specifically: Obtain the number of soil decomposing microorganisms in the litter layer of the oil tea forest and generate an evaluation value of the number of decomposing microorganisms; Obtain soil enzyme activity in the litter layer of the oil-tea camellia forest and generate enzyme activity evaluation values; The soil evaluation value of the oil tea forest litter layer is generated based on the evaluation value of the number of decomposing microorganisms and the evaluation value of enzyme activity. Acquire sampling data of the oil-tea camellia forest and generate an estimated carbon sequestration value of the oil-tea camellia forest; wherein the sampling data includes the number of trees in the sampling area, the diameter at breast height of the trees in the sampling area, the height of the trees in the sampling area, and the weight of the litter layer in the sampling area; Specifically: By formula , generate the estimated carbon sequestration value Cs of Camellia oleifera forest; In the formula, DBH represents the tree diameter at breast height (DBH) in the sampling area, H represents the tree height in the sampling area, Dg represents the weight of the litter layer in the sampling area, Pd represents the soil evaluation value of the litter layer in the oil-tea camellia forest, a is the constant coefficient of the equation, b is the exponential coefficient of the tree diameter at breast height (DBH) in the sampling area, c is the exponential coefficient of the tree height (H) in the sampling area, ω represents the carbon conversion factor, and η represents the ratio of the sampling area to the total area of the oil-tea camellia forest. Obtain the weather impact coefficient of the oil-tea camellia forest, establish a carbon sequestration determination model for the oil-tea camellia forest, and generate the carbon sequestration determination value of the oil-tea camellia forest; Specifically: Acquire the weather data of the oil tea forest and generate the weather impact coefficient of the oil tea forest; wherein the weather data of the oil tea forest includes the average rainfall of the oil tea forest, the average sunshine time of the oil tea forest, and the average sunshine intensity of the oil tea forest; Establish a carbon sequestration determination model for oil-tea camellia forests, substitute the weather impact coefficient of oil-tea camellia forests, the estimated carbon sequestration value of oil-tea camellia forests, and the carbon sequestration capacity evaluation value of oil-tea camellia forests into the carbon sequestration determination model to generate the carbon sequestration determination value of oil-tea camellia forests; The expression of the oil-tea camellia forest carbon sequestration determination model is: ； In the expression, Sc represents the evaluation value of the carbon sequestration capacity of the oil-tea forest, Cs represents the estimated carbon sequestration value of the oil-tea forest, and Ty represents the weather impact coefficient of the oil-tea forest.

2. The method for determining carbon sequestration in oil-tea camellia forest according to claim 1, wherein: The method for generating the leaf gap assessment value of the oil-tea camellia forest canopy is specifically as follows: The gap difference is generated by subtracting the gap between the canopy leaves and the middle value of the standard gap range. The standard gap range refers to the size range of the canopy leaf gap without affecting sunlight penetration. The gap difference is compared with the middle value of the standard gap range to generate the leaf gap assessment value of the oil-tea camellia forest canopy. The method for generating the evaluation value of the oil-tea camellia forest crown angle is as follows: Obtaining the branch crown angle of the oil tea forest, performing subtraction processing on the branch crown angle of the oil tea forest and the middle value of the branch crown angle standard range of the oil tea forest to generate the branch crown angle difference; The difference in branch-crown angle is compared with the standard value of branch-crown angle of oil-tea camellia forest to generate the branch-crown angle assessment value of oil-tea camellia forest. Among them, the method for generating the evaluation value of the angle between branches and leaves of the oil tea forest is specifically as follows; Obtain the angle of branches and leaves of the oil tea forest, and perform subtraction processing on the angle of branches and leaves of the oil tea forest and the middle value of the standard angle range of branches and leaves to generate the angle difference of branches and leaves; wherein the standard angle range of branches and leaves refers to the angle range of branches and leaves of oil tea trees under normal conditions; The angle difference between branches and leaves is compared with the middle value of the standard angle range of branches and leaves to generate the evaluation value of the angle between branches and leaves of oil-tea camellia forest. The method for generating the carbon sequestration capacity evaluation value of the oil-tea camellia forest is as follows: The leaf gap assessment value of the oil-tea forest canopy, the branch-crown angle assessment value and the branch-leaf angle assessment value of the oil-tea forest are weighted to generate the carbon sequestration capacity assessment value of the oil-tea forest.

3. The method for determining carbon sequestration in oil-tea camellia forest according to claim 1, wherein: The method for generating the evaluation value of the number of decomposing microorganisms is specifically as follows: Obtaining the number of soil decomposing microorganisms in the oil-tea camellia forest litter layer, performing ratio processing on the number of soil decomposing microorganisms in the oil-tea camellia forest litter layer and the total number of microorganisms in the soil of the oil-tea camellia forest litter layer to generate a ratio of the number of decomposing microorganisms; The difference between the ratio of decomposing microorganisms and the median value of the ratio of soil decomposing microorganisms in the litter layer of Camellia oleifera forest was processed to generate the ratio difference. The ratio difference is processed with the median value of the soil decomposition microorganism ratio range of the oil-tea camellia forest litter layer to generate the decomposition microorganism quantity evaluation value; The method for generating the enzyme activity evaluation value specifically includes: Obtaining soil enzyme activity in the oil-tea camellia forest litter layer, performing difference processing on the soil enzyme activity in the oil-tea camellia forest litter layer and the middle value of the soil enzyme activity standard range to generate enzyme activity difference; The enzyme activity difference was compared with the middle value of the soil enzyme activity standard range to generate the enzyme activity evaluation value.

4. The method for determining carbon sequestration in oil-tea camellia forest according to claim 1, wherein: The method for generating the oil-tea camellia forest weather impact coefficient is specifically as follows: Get the weather data of the oil tea forest; The average rainfall of the oil-tea camellia forest is subtracted from the standard rainfall of the oil-tea camellia forest growth environment to generate the rainfall difference; The rainfall difference is compared with the standard rainfall in the oil-tea camellia forest growth environment to generate the rainfall impact coefficient. The average light duration of the oil-tea tree forest is subtracted from the standard light duration of the oil-tea tree forest growth environment to generate the light duration difference; wherein the standard light duration of the oil-tea tree forest growth environment refers to the time that the oil-tea tree forest needs to receive light per unit time under normal circumstances; The light duration difference is compared with the standard light duration of the oil-tea camellia forest growth environment to generate the light duration influence coefficient. The rainfall influence coefficient and the sunshine time influence coefficient are weighted to generate the oil-tea plantation weather influence coefficient.

5. A system for measuring carbon sequestration in oil-tea camellia forests, characterized in that: The system is used to perform the method according to any one of claims 1 to 4 above, and the system comprises: The carbon sequestration capacity evaluation unit is used to obtain characteristic data of the oil-tea camellia forest and generate an evaluation value of the carbon sequestration capacity of the oil-tea camellia forest; wherein the characteristic data of the oil-tea camellia forest include the canopy leaf gap, the branch-crown angle, and the branch-leaf angle; The soil evaluation unit of the oil tea forest litter layer is used to obtain soil data of the oil tea forest litter layer and generate a soil evaluation value of the oil tea forest litter layer; wherein the oil tea forest litter layer data includes the number of soil decomposing microorganisms in the oil tea forest litter layer and the soil enzyme activity in the oil tea forest litter layer; The oil-tea camellia forest carbon sequestration estimation module is used to obtain sampling data of the oil-tea camellia forest and generate an estimated carbon sequestration value of the oil-tea camellia forest; wherein the sampling data includes the number of trees in the sampling area, the diameter at breast height of the trees in the sampling area, the height of the trees in the sampling area, and the weight of the litter layer in the sampling area; The oil-tea camellia forest carbon sequestration measurement value generating unit is used to obtain the oil-tea camellia forest weather impact coefficient, establish the oil-tea camellia forest carbon sequestration measurement model, substitute the oil-tea camellia forest weather impact coefficient, the oil-tea camellia forest carbon sequestration estimated value and the oil-tea camellia forest carbon sequestration capacity evaluation value into the oil-tea camellia forest carbon sequestration measurement model, and generate the oil-tea camellia forest carbon sequestration measurement value; The carbon sequestration capacity evaluation unit specifically includes: A canopy leaf gap assessment module is used to obtain the canopy leaf gap of the oil-tea camellia forest and generate an assessment value of the canopy leaf gap of the oil-tea camellia forest; The branch crown angle evaluation module is used to obtain the branch crown angle of the oil tea forest and generate an evaluation value of the branch crown angle of the oil tea forest; The branch and leaf angle evaluation module is used to obtain the branch and leaf angle of the oil-tea camellia forest and generate an evaluation value of the branch and leaf angle of the oil-tea camellia forest; The oil-tea camellia forest carbon sequestration capacity evaluation value generation module is used to generate the oil-tea camellia forest carbon sequestration capacity evaluation value based on the oil-tea camellia forest canopy leaf gap evaluation value, the oil-tea camellia forest branch crown angle evaluation value and the oil-tea camellia forest branch-leaf angle evaluation value; The soil evaluation unit of the oil tea forest litter layer specifically includes: The decomposition microorganism quantity analysis module is used to obtain the number of soil decomposition microorganisms in the litter layer of the oil tea forest and generate an evaluation value of the number of decomposition microorganisms; The enzyme activity analysis module is used to obtain soil enzyme activity in the litter layer of the oil-tea camellia forest and generate enzyme activity evaluation values; The soil evaluation value generation module of the oil-tea camellia forest litter layer is used to generate the soil evaluation value of the oil-tea camellia forest litter layer according to the evaluation value of the number of decomposing microorganisms and the evaluation value of enzyme activity; The oil-tea camellia forest carbon sequestration measurement value generation unit specifically includes: Weather analysis module, used to obtain weather data of oil-tea camellia forest and generate weather impact coefficient of oil-tea camellia forest; The module for generating the carbon sequestration measurement value of the oil-tea forest is used to establish a carbon sequestration measurement model for the oil-tea forest, substitute the weather impact coefficient of the oil-tea forest, the estimated carbon sequestration value of the oil-tea forest and the carbon sequestration capacity evaluation value of the oil-tea forest into the carbon sequestration measurement model, and generate the carbon sequestration measurement value of the oil-tea forest.

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