Method and electronic equipment for tracing the source of particulate phosphorus in water

Abstract

The present invention discloses a method and electronic device for tracing the source of particulate phosphorus in water bodies. The method comprises: obtaining data on particulate matter from multiple sources within a study area; performing composite fingerprint factor analysis on inorganic particulate matter to obtain the inorganic particulate phosphorus contribution rates from multiple sources; performing isotope analysis on organic particulate matter to obtain the organic particulate phosphorus contribution rates from multiple sources; determining the adsorption-desorption equilibrium rates of particulate matter from multiple sources on phosphorus; and calculating the relative contribution rate of particulate phosphorus from each source based on the inorganic particulate phosphorus contribution rates from multiple sources, the organic particulate phosphorus contribution rates from multiple sources, and the adsorption-desorption equilibrium rates of particulate matter from multiple sources on phosphorus. By combining the multi-parameter advantages of composite fingerprint factors and the specificity of isotope technology, the present invention improves the accuracy and feasibility of tracing the source of particulate phosphorus in water bodies, provides more accurate tracing information, and achieves high-precision identification of the sources of particulate phosphorus in inorganic and organic particulate matter.

Description

Technical Field

[0001] The present invention relates to the technical field related to environmental science and water management, and in particular to a method for tracing the source of particulate phosphorus in water, electronic equipment, storage medium and computer program product. Background Art

[0002] Particulate phosphorus is a major contributor to water eutrophication. Its sources are complex, including industrial and agricultural wastewater discharge, atmospheric deposition, surface runoff, and endogenous releases. Accurately tracing particulate phosphorus in water is crucial for effective water quality management and control strategies.

[0003] Composite fingerprint factor technology analyzes the physicochemical properties of particulate matter (such as particle size distribution, chemical composition, and heavy metal content) to determine its likely source. This technology is highly adaptable and can select appropriate fingerprint factors based on different environmental conditions. However, when used alone, it is significantly affected by environmental fluctuations, potentially resulting in unstable fingerprint information. Carbon and nitrogen stable isotope technology has high specificity for distinguishing organic matter from terrestrial and aquatic sources. However, this technology provides insufficient information for tracing the source of inorganic particulate matter.

[0004] Geographic Information Systems (GIS) and remote sensing technologies can be used to analyze the spatial distribution and sources of particulate phosphorus over large areas, integrating diverse data sets (such as land use, meteorological data, and topographic information) to identify sources. However, these methods are highly data-dependent, and their effectiveness is affected by data quality and coverage. Water quality models can simulate the transport and transformation of particulate phosphorus in water bodies and predict future changes, but they rely on a series of assumptions that can affect their accuracy and generalizability. Furthermore, model outputs are highly sensitive to parameter selection, potentially leading to errors.

[0005] Therefore, the existing methods for tracing the source of particulate phosphorus in water bodies are not accurate in identification and tracing, and cannot achieve high-precision identification of the source of particulate phosphorus in inorganic and organic particulate matter. Summary of the Invention

[0006] Based on this, it is necessary to provide a method for tracing the source of particulate phosphorus in water bodies, an electronic device, a storage medium and a computer program product to address the technical problem that the existing method for tracing the source of particulate phosphorus in water bodies is inaccurate and cannot achieve high-precision identification of the source of particulate phosphorus in inorganic and organic particulate matter.

[0007] The present invention provides a method for tracing the source of particulate phosphorus in water, comprising:

[0008] Obtain data on particulate matter from multiple sources within the study area, including both inorganic and organic particles;

[0009] Performing a composite fingerprint factor analysis on the inorganic particulate matter to obtain the contribution rates of inorganic particulate phosphorus from multiple sources;

[0010] performing isotope analysis on the organic particulate matter to obtain contribution rates of organic particulate phosphorus from multiple sources;

[0011] Determine the adsorption-desorption equilibrium rates of phosphorus on particulate matter from multiple sources;

[0012] Based on the contribution rate of inorganic particulate phosphorus from multiple sources, the contribution rate of organic particulate phosphorus from multiple sources, and the adsorption-desorption equilibrium rate of particulate matter on phosphorus from multiple sources, the relative contribution rate of particulate phosphorus from each source is calculated.

[0013] Furthermore, the sources include multiple sources of different land use types, endogenous release sources, vegetation residue sources and other inorganic particulate phosphorus sources.

[0014] Further:

[0015] The performing of a composite fingerprint factor analysis on the inorganic particulate matter to obtain the inorganic particulate phosphorus contribution rates from multiple sources includes: performing a composite fingerprint factor analysis on the inorganic particulate matter to obtain the inorganic particulate phosphorus contribution rates from multiple source areas and other inorganic particulate phosphorus sources;

[0016] The performing isotope analysis on the organic particulate matter to obtain the contribution rates of organic particulate phosphorus from multiple sources includes: performing isotope analysis on the organic particulate matter to obtain the contribution rates of organic particulate phosphorus from multiple source areas, endogenous release sources, and vegetation residue sources;

[0017] The determination of the adsorption-desorption equilibrium rates of phosphorus by particulate matter from multiple sources includes calculating the adsorption-desorption equilibrium rates of phosphorus by soil particulate matter from multiple sources and the adsorption-desorption equilibrium rates of phosphorus by other inorganic particulate matter.

[0018] Furthermore, the calculation of the relative contribution rate of particulate phosphorus from each source based on the contribution rates of inorganic particulate phosphorus from multiple sources, the contribution rates of organic particulate phosphorus from multiple sources, and the adsorption-desorption equilibrium rates of particulate matter from multiple sources on phosphorus includes:

[0019] Calculate the contribution of organic particulate phosphorus from endogenous release sources, the contribution of organic particulate phosphorus from vegetation debris, and the contribution of other inorganic particulate phosphorus sources;

[0020] Based on the contribution rate of inorganic particulate phosphorus from multiple sources, the contribution rate of organic particulate phosphorus from multiple sources, the adsorption-desorption equilibrium rate of soil particulate matter on phosphorus from multiple sources, the contribution value of organic particulate phosphorus from endogenous release sources, the contribution value of organic particulate phosphorus from vegetation residue sources, and the contribution value of other inorganic particulate phosphorus sources, the relative contribution rate of particulate phosphorus from each source, endogenous release source, vegetation residue source and other inorganic particulate phosphorus sources is calculated.

[0021] Furthermore, the calculation of the relative contribution rate of particulate phosphorus from each source, endogenous release source, vegetation residue source, and other inorganic particulate phosphorus sources includes:

[0022] The relative contribution of particulate phosphorus to each source is calculated as follows:

[0023]

[0024] The relative contribution of particulate phosphorus from endogenous release sources is calculated as follows:

[0025]

[0026] The relative contribution rate of particulate phosphorus from vegetation debris is calculated as follows:

[0027]

[0028] Calculate the relative contribution of particulate phosphorus from other inorganic particulate phosphorus sources:

[0029]

[0030] Where: P s is the relative contribution rate of particulate phosphorus in source area s, C Is is the content of inorganic particulate phosphorus in source area s, I s is the contribution rate of inorganic particulate phosphorus from source s, A s is the adsorption-desorption equilibrium rate of phosphorus by soil particles at source site s, C Os is the content of organic particulate phosphorus in source area s, O s is the contribution rate of organic particulate phosphorus from source s, Q1 is the contribution value of organic particulate phosphorus from endogenous release sources, Q2 is the contribution value of organic particulate phosphorus from vegetation residues, Q3 is the contribution value of other inorganic particulate phosphorus sources, and n is the number of different source areas.

[0031] Furthermore, the calculation of the contribution value of organic particulate phosphorus from endogenous release sources, the contribution value of organic particulate phosphorus from vegetation residues, and the contribution value of other inorganic particulate phosphorus sources includes:

[0032] The contribution of organic particulate phosphorus from endogenous release sources is calculated as:

[0033]

[0034] The contribution of organic particulate phosphorus from vegetation residues is calculated as:

[0035]

[0036] The contribution of other inorganic particulate phosphorus sources is calculated as:

[0037]

[0038] Among them, C 内源 is the organic particulate phosphorus content from endogenous release sources, O 内源 is the contribution rate of organic particulate phosphorus from endogenous release sources, C 植被 is the organic phosphorus content from vegetation residues, O 植被 is the contribution rate of organic phosphorus from vegetation residues, C 其它 is the content of other inorganic particulate phosphorus, I 其它 is the contribution rate of other inorganic particulate phosphorus, A 其它 is the adsorption-desorption equilibrium rate of phosphorus by other inorganic particles.

[0039] Furthermore, the calculation of the adsorption-desorption equilibrium rates of phosphorus by soil particles and other inorganic particles from multiple sources includes:

[0040] Calculate the adsorption-desorption equilibrium rate of phosphorus on particulate matter at source s as:

[0041]

[0042] Among them, A s is the adsorption-desorption equilibrium rate of phosphorus by particulate matter at source s, Q e,s is the adsorption-desorption equilibrium of phosphorus on soil particles in the source area, Q o,s is the initial content of particulate phosphorus in soil particles or other inorganic particles in the source area;

[0043] Calculate the adsorption-desorption equilibrium rate of phosphorus from particulate matter of other inorganic particulate phosphorus sources:

[0044]

[0045] Among them, A 其他 is the adsorption-desorption equilibrium rate of phosphorus by particulate matter from other inorganic particulate phosphorus sources, Q e,其他 is the adsorption-desorption equilibrium of phosphorus by other inorganic particles, Q o,其他 It is the initial content of particulate phosphorus in other inorganic particulate matter.

[0046] The present invention provides an electronic device, comprising:

[0047] at least one processor; and,

[0048] a memory communicatively connected to at least one of the processors; wherein,

[0049] The memory stores instructions that can be executed by at least one of the processors, and the instructions are executed by at least one of the processors to enable at least one of the processors to execute the method for tracing the source of particulate phosphorus in water bodies as described above.

[0050] The present invention provides a storage medium, which stores computer instructions. When a computer executes the computer instructions, it is used to execute all steps of the method for tracing the source of particulate phosphorus in water as described above.

[0051] The present invention provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the method for tracing the source of particulate phosphorus in water as described above.

[0052] The present invention conducts composite fingerprint factor analysis and isotope analysis on water samples. By combining the multi-parameter advantages of the composite fingerprint factor and the specificity of the isotope technology, the accuracy and feasibility of tracing the source of particulate phosphorus in water bodies are improved, more accurate tracing information is provided, and high-precision identification of the source of particulate phosphorus in inorganic and organic particulate matter is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 This is a workflow diagram of a method for tracing the source of particulate phosphorus in water according to one embodiment of the present invention;

[0054] Figure 2 This is a workflow diagram of a method for tracing the source of particulate phosphorus in water according to another embodiment of the present invention;

[0055] Figure 3 This is a schematic diagram of the relative contribution rates of particulate phosphorus from different sources in an example of the present invention;

[0056] Figure 4 The figure is a schematic diagram of the hardware structure of an electronic device of the present invention. DETAILED DESCRIPTION

[0057] The following further describes specific embodiments of the present invention with reference to the accompanying drawings. Like components are denoted by like reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively.

[0058] like Figure 1 The figure shows a workflow diagram of a method for tracing the source of particulate phosphorus in water according to an embodiment of the present invention, including:

[0059] Step S101, obtaining data on particulate matter from multiple sources within a study area, wherein the particulate matter includes inorganic particulate matter and organic particulate matter;

[0060] Step S102, performing composite fingerprint factor analysis on the inorganic particulate matter to obtain the inorganic particulate phosphorus contribution rates from multiple sources;

[0061] Step S103, performing isotope analysis on the organic particulate matter to obtain contribution rates of organic particulate phosphorus from multiple sources;

[0062] Step S104, determining the adsorption-desorption equilibrium rate of phosphorus by particulate matter from multiple sources;

[0063] Step S105 , calculating the relative contribution rate of particulate phosphorus from each source based on the inorganic particulate phosphorus contribution rates from multiple sources, the organic particulate phosphorus contribution rates from multiple sources, and the adsorption-desorption equilibrium rates of particulate matter on phosphorus from multiple sources.

[0064] Specifically, the present invention can be applied to electronic devices with processing capabilities, such as computers.

[0065] This study provides a method that combines carbon and nitrogen stable isotope techniques with composite fingerprint factor analysis. This method, which accounts for the characteristics of both inorganic and organic particulate matter, is used to accurately trace and quantify the different potential sources and contributions of particulate phosphorus in water. This comprehensive, accurate, and practical method for tracing particulate phosphorus in water provides strong support for the control and management of eutrophication.

[0066] Preferably, the water body of the present application is a natural water body, and the present application is preferably a method for tracing the source of particulate phosphorus in natural water bodies.

[0067] First, step S101 is executed to obtain data on particulate matter from multiple sources within a study area, where the particulate matter includes inorganic particulate matter and organic particulate matter.

[0068] Specifically, sampling and classification are performed first.

[0069] Multiple sampling points were established within the study area, covering potential pollution sources, including key locations such as rivers, lakes, and estuaries. Filtration and centrifugation techniques were used to ensure the integrity of the collected particulate matter. Potential sources of organic and inorganic particulate phosphorus were categorized.

[0070] In one embodiment, the sources include multiple sources of different land use types, endogenous release sources, vegetation residue sources, and other inorganic particulate phosphorus sources.

[0071] Specifically, sources of particulate matter include:

[0072] Source areas of different land use types such as farmland, forest land, industrial area, cultivated land, grassland, etc.;

[0073] Sources of C3 and C4 vegetation residues, i.e., residues of C3 and C4 plants of plants that photosynthesize through the C3 pathway and C4 pathway;

[0074] Endogenous release sources such as algae, plankton, and aquatic vascular plants;

[0075] Other sources of inorganic particulate phosphorus such as atmospheric deposition, suspended release from bottom sediments, etc.

[0076] Among them, soil particulate matter from sources of different land use types includes inorganic particulate matter and organic particulate matter, while other sources of inorganic particulate phosphorus refer to sources of phosphorus released from inorganic particulate matter other than soil particulate matter from the source.

[0077] The phosphorus content of both inorganic and organic particulate matter was then measured. The inorganic portion of the particulate matter was analyzed for physical properties (e.g., particle size and morphology) and chemical composition (e.g., heavy metal content and mineral type). The organic portion of the particulate matter was analyzed for its carbon-nitrogen ratio and carbon-nitrogen isotope ratio (δ13C and δ15N).

[0078] Then, step S102 is executed to perform a composite fingerprint factor analysis on the inorganic particulate matter to obtain the inorganic particulate phosphorus contribution rates from multiple sources.

[0079] Specifically, composite fingerprint factor analysis is used to identify potential sources of inorganic particulate matter. This can be determined by measuring specific environmental indicators, such as mineral composition and heavy metal concentrations. Statistical models are also used to analyze the relationship between fingerprint factors and known pollution sources to determine the likely sources and relative contributions of each type of particulate matter, ultimately deriving the contribution rate of inorganic particulate phosphorus from multiple sources.

[0080] Then, step S103 is executed to perform isotope analysis on the organic particulate matter to obtain contribution rates of organic particulate phosphorus from multiple sources.

[0081] Specifically, carbon and nitrogen stable isotope analysis was used to determine the contribution of organic particulate phosphorus from multiple sources. This involved using mass spectrometry to measure the carbon and nitrogen isotope ratios in particulate organic matter to identify its biogeochemical characteristics and origin. Isotope data were then analyzed to distinguish whether the organic particulate matter originated from terrestrial vegetation, aquatic plants, or microbial activity. Ultimately, the contribution of organic particulate phosphorus from multiple sources was determined.

[0082] Then, step S104 is executed to determine the adsorption-desorption equilibrium rates of phosphorus by particulate matter from multiple sources.

[0083] For each source of particulate matter, based on its physical and chemical properties, the adsorption-desorption equilibrium rate in a given water environment (i.e., the water body in the study area) is calculated through field sampling and indoor experiments or by consulting literature data.

[0084] Finally, step S105 is executed to calculate the relative contribution rate of particulate phosphorus from each source based on the contribution rate of inorganic particulate phosphorus from multiple sources, the contribution rate of organic particulate phosphorus from multiple sources, and the adsorption-desorption equilibrium rate of particulate matter on phosphorus from multiple sources.

[0085] Specifically, by combining the composite fingerprint factors and isotope data, a comprehensive evaluation model was established to integrate the data of the composite fingerprint factors and carbon and nitrogen stable isotope technology to calculate the relative contribution rate of particulate phosphorus from each source.

[0086] This method not only improves the accuracy of identifying the source of particulate phosphorus in water, but also strengthens the scientific basis for environmental management and policy development, which is of great significance in guiding the formulation of water quality protection and remediation measures. Furthermore, the widespread application of this method will help environmental science researchers and policymakers better understand and address water pollution issues.

[0087] The present invention conducts composite fingerprint factor analysis and isotope analysis on water samples. By combining the multi-parameter advantages of the composite fingerprint factor and the specificity of the isotope technology, the accuracy and feasibility of tracing the source of particulate phosphorus in water bodies are improved, more accurate tracing information is provided, and high-precision identification of the source of particulate phosphorus in inorganic and organic particulate matter is achieved.

[0088] like Figure 2 FIG2 is a flowchart of a method for tracing the source of particulate phosphorus in water according to another embodiment of the present invention, comprising:

[0089] Step S201, obtaining data on particulate matter from multiple sources in the study area, wherein the particulate matter includes inorganic particulate matter and organic particulate matter, and the sources include multiple sources of different land use types, endogenous release sources, vegetation residue sources, and other inorganic particulate phosphorus sources.

[0090] Step S202 , performing a composite fingerprint factor analysis on the inorganic particulate matter to obtain the inorganic particulate phosphorus contribution rates of multiple source areas and other sources of inorganic particulate phosphorus.

[0091] Step S203: performing isotope analysis on the organic particulate matter to obtain the contribution rate of organic particulate phosphorus from multiple source areas, endogenous release sources, and vegetation residue sources.

[0092] Step S204 , calculating the adsorption-desorption equilibrium rates of phosphorus by soil particulate matter and the adsorption-desorption equilibrium rates of phosphorus by other inorganic particulate matter from multiple source areas.

[0093] Step S205 , calculating the contribution value of organic particulate phosphorus from endogenous release sources, the contribution value of organic particulate phosphorus from vegetation residues, and the contribution value of other inorganic particulate phosphorus sources.

[0094] Step S206, based on the contribution rate of inorganic particulate phosphorus from multiple sources, the contribution rate of organic particulate phosphorus from multiple sources, the adsorption-desorption equilibrium rate of soil particulate matter on phosphorus from multiple sources, the contribution value of organic particulate phosphorus from endogenous release sources, the contribution value of organic particulate phosphorus from vegetation residue sources and the contribution value of other inorganic particulate phosphorus sources, calculate the relative contribution rate of particulate phosphorus from each source, endogenous release source, vegetation residue source and other inorganic particulate phosphorus sources.

[0095] Specifically, first, execute step S201 to obtain data on particulate matter from multiple sources in the study area, wherein the particulate matter includes inorganic particulate matter and organic particulate matter, and the sources include multiple sources of different land use types, endogenous release sources, vegetation residue sources, and other inorganic particulate phosphorus sources.

[0096] Specifically, sampling and classification are performed first.

[0097] Multiple sampling points were established throughout the study area, covering potential pollution sources, including key locations such as rivers, lakes, and estuaries. Filtration and centrifugation techniques were used to ensure the integrity of the collected particulate matter. Potential sources of organic and inorganic particulate phosphorus were categorized. These sources included sources from various land use types, endogenous release sources, vegetation debris, and other inorganic particulate phosphorus sources.

[0098] Specifically, sources of particulate matter include:

[0099] Source areas of different land use types such as farmland, forest land, industrial area, cultivated land, grassland, etc.;

[0100] The sources of C3 and C4 vegetation residues, i.e. the residues of C3 and C4 plants;

[0101] Endogenous release sources such as algae, plankton, and aquatic vascular plants;

[0102] Other sources of inorganic particulate phosphorus such as atmospheric deposition, suspended release from bottom sediments, etc.

[0103] Among them, soil particulate matter from sources of different land use types includes inorganic particulate matter and organic particulate matter, while other sources of inorganic particulate phosphorus refer to sources of phosphorus released from inorganic particulate matter other than soil particulate matter from the source.

[0104] The phosphorus content of both inorganic and organic particulate matter was then measured. The inorganic portion of the particulate matter was analyzed for physical properties (e.g., particle size and morphology) and chemical composition (e.g., heavy metal content and mineral type). The organic portion of the particulate matter was analyzed for its carbon-nitrogen ratio and carbon-nitrogen isotope ratio (δ13C and δ15N).

[0105] More specifically, data on particulate matter from multiple sources within the study area were obtained, including:

[0106] 1) Research area and sampling point settings:

[0107] Select representative water bodies (such as rivers, lakes and wetlands) and conduct multiple sampling in different seasons (dry and wet seasons) to capture the characteristics of particulate matter under different environmental conditions.

[0108] Multiple sampling points were set up in the study area to cover possible pollution sources and land use types, including agricultural areas, woodlands, industrial areas, cultivated land, grasslands, etc., sources of C3 and C4 vegetation residues, endogenous release sources of organic particulate phosphorus such as algae, plankton, and aquatic vascular plants, and inorganic particulate phosphorus sources such as atmospheric deposition and suspended release of bottom mud sediments.

[0109] 2) Sample collection:

[0110] Special sampling equipment is used at each sampling point to collect samples of surface soil, sediment and suspended particulate matter in water. The samples are stored under refrigerated conditions to avoid contamination and changes as much as possible.

[0111] Centrifugation technology is used to separate sample particles from water to ensure the integrity of the particles.

[0112] 3) Determine the sample content:

[0113] According to the characteristics of the samples, the phosphorus content in inorganic particulate matter and organic particulate matter was determined separately.

[0114] Then, step S202 is executed to perform a composite fingerprint factor analysis on the inorganic particulate matter to obtain the inorganic particulate phosphorus contribution rates of multiple source areas and other sources of inorganic particulate phosphorus.

[0115] Specifically, composite fingerprint factor analysis is used to identify potential sources of inorganic particulate matter. This can be determined by measuring specific environmental indicators, such as mineral composition and heavy metal concentrations. Statistical models are then applied to analyze the relationship between fingerprint factors and known pollution sources to determine the likely origin and relative contribution of each particulate matter. The contribution rate of inorganic particulate phosphorus from multiple sources and other sources of inorganic particulate phosphorus is then determined.

[0116] Among them, composite fingerprint factor analysis includes:

[0117] Composite fingerprint factor analysis

[0118] 1) Chemical analysis:

[0119] Atomic absorption spectroscopy (AAS) is used to analyze the composition of particulate matter, such as the concentration of heavy metals, including copper, zinc, lead, etc. X-ray fluorescence spectroscopy (XRF) is used to analyze the chemical composition of particulate matter.

[0120] 2) Physical analysis:

[0121] The particle size distribution of the particles was measured using a laser particle size analyzer.

[0122] The morphology and surface characteristics of the particles were analyzed by scanning electron microscopy (SEM).

[0123] 3) Data processing:

[0124] By establishing the optimal fingerprint factor combination, a linear mixed model is used to establish the association between soil and other inorganic particulate phosphorus sources of different land use types and particulate matter in water bodies, and quantitatively calculate the relative contribution ratio of different land use types and other inorganic particulate phosphorus sources to water body particulate matter. The currently commonly used mixed model is Walling, and the mixed model objective function is as follows:

[0125] (I)

[0126] 0 (II)

[0127] (III)

[0128] Where: C i is the concentration of the fingerprint factor i of the sediment target sample (water particles) (mg / kg); P K is the contribution percentage of source K, where source K includes source s of different land use types and other inorganic particulate phosphorus sources; S Ki is the average concentration of fingerprint identification factor i in source K (mg / kg); m is the number of sources; q is the number of optimal fingerprint identification factors, and f is the minimum residual sum of squares. The contribution percentage P corresponding to each source K is calculated when the result f of formula (I) is minimized under the constraints of formulas (II) and (III). K .

[0129] Without considering the adsorption and desorption of phosphorus by sediment during migration, the contribution rate of K from different sources to particulate phosphorus in water bodies is calculated using the following formula:

[0130] (IV)

[0131] Where: I K is the contribution rate of inorganic particulate phosphorus from source K; PK is the contribution percentage of source K; C Kp is the average concentration of inorganic particulate phosphorus from source K (mg / kg); m is the number of sources.

[0132] Then, step S203 is executed to perform isotope analysis on the organic particulate matter to obtain the contribution rate of organic particulate phosphorus from multiple source areas, endogenous release sources, and vegetation residue sources.

[0133] Specifically, carbon and nitrogen stable isotope analysis was used to determine the contribution of organic particulate phosphorus from multiple sources, internal release sources, and vegetation debris. This involved using mass spectrometry to measure the carbon and nitrogen isotope ratios in particulate organic matter to identify its biogeochemical characteristics and origin. Isotope data were then analyzed to distinguish whether the organic particulate matter originated from terrestrial vegetation, aquatic plants, or microbial activity. Ultimately, the contribution of organic particulate phosphorus from multiple sources, internal release sources, and vegetation debris was determined.

[0134] Carbon and nitrogen stable isotope analysis

[0135] 1) Isotope ratio determination:

[0136] The stable isotope ratios (δ 13 C and δ 15 N).

[0137] 2) Data interpretation:

[0138] Compare the isotope data in the sample with the range of carbon and nitrogen isotope ratios from known sources (such as terrestrial plants, aquatic plants and microorganisms) to determine the proportion of exogenous input in the total traceability.

[0139] 3) Isotope mixing model:

[0140] The end-member equilibrium mixing model (EMMA) is used to quantitatively analyze isotope data and calculate the contribution rate of each pollution source, where the end-members include different source areas, endogenous release sources, and vegetation debris sources. The formula is as follows:

[0141]

[0142] Where: a ij represents the j eigenvalue of the i end member (δ 13 C and δ 15 N), f i represents the contribution rate of end member i, X i The characteristic value of the sample (δ 13 C and δ 15N)). Among them, the characteristic values ​​include the characteristics of the isotope, such as δ 13 C (carbon-13 isotope ratio) and δ 15 N (nitrogen-15 isotope ratio) etc.

[0143] Then, step S204 is executed to calculate the adsorption-desorption equilibrium rates of phosphorus by soil particles from multiple source areas and the adsorption-desorption equilibrium rates of phosphorus by other inorganic particles.

[0144] For each source of soil particles or other inorganic particles, based on their physical and chemical properties, the adsorption-desorption equilibrium rate under specific water conditions is calculated through on-site sampling and indoor experiments or by consulting literature.

[0145] In one embodiment, the calculation of the adsorption-desorption equilibrium rates of phosphorus by soil particulate matter and other inorganic particulate matter from multiple sources includes:

[0146] Calculate the adsorption-desorption equilibrium rate of phosphorus on particulate matter at source s as:

[0147]

[0148] Among them, A s is the adsorption-desorption equilibrium rate of phosphorus by particulate matter at source s, Q e,s is the adsorption-desorption equilibrium of phosphorus on soil particles in the source area, Q o,s is the initial content of particulate phosphorus in soil particles or other inorganic particles in the source area;

[0149] Calculate the adsorption-desorption equilibrium rate of phosphorus from particulate matter of other inorganic particulate phosphorus sources:

[0150]

[0151] Among them, A 其他 is the adsorption-desorption equilibrium rate of phosphorus by particulate matter from other inorganic particulate phosphorus sources, Q e,其他 is the adsorption-desorption equilibrium of phosphorus by other inorganic particles, Q o,其他 It is the initial content of particulate phosphorus in other inorganic particulate matter.

[0152] The adsorption-desorption equilibrium rate under different source environmental conditions can also be evaluated by combining laboratory simulation calculations and field data analysis.

[0153] The adsorption-desorption equilibrium refers to the difference in the initial concentration of particulate phosphorus from different sources due to the corresponding adsorption and desorption behaviors of particulate phosphorus in water. When the adsorption-desorption equilibrium ratio is greater than 1, it means that adsorption is greater than desorption, while when the adsorption-desorption equilibrium ratio is less than 1, it means that adsorption is less than desorption.

[0154] For example, the adsorption-desorption equilibrium rate of phosphorus from particulate matter of different sources is:

[0155] ● Farmland: 1.26 (the adsorption-desorption equilibrium of phosphorus on soil particles in this farmland is greater than the initial content, i.e., the numerator is greater than the denominator, which actually means adsorption is greater than desorption);

[0156] ●Shoreside zone: 0.73 (the adsorption-desorption equilibrium of phosphorus by soil particles in the shoreside zone is less than the initial content, i.e. the numerator is less than the denominator, which actually means adsorption is less than desorption behavior).

[0157] This example provides a method for calculating the adsorption-desorption equilibrium rate of phosphorus by particulate matter from various sources and other sources of inorganic particulate phosphorus, providing an effective tool for simulating and quantifying the behavior of soil particulate matter and its adsorbed phosphorus in water bodies.

[0158] Then, step S205 is executed to calculate the contribution value of organic particulate phosphorus from endogenous release sources, the contribution value of organic particulate phosphorus from vegetation residues, and the contribution value of other inorganic particulate phosphorus sources.

[0159] In one embodiment, the calculation of the contribution value of organic particulate phosphorus from endogenous release sources, the contribution value of organic particulate phosphorus from vegetation residues, and the contribution value of other inorganic particulate phosphorus sources includes:

[0160] The contribution of organic particulate phosphorus from endogenous release sources is calculated as:

[0161]

[0162] The contribution of organic particulate phosphorus from vegetation residues is calculated as:

[0163]

[0164] The contribution of other inorganic particulate phosphorus sources is calculated as:

[0165]

[0166] Among them, C 内源 is the organic particulate phosphorus content from endogenous release sources, O 内源 is the contribution rate of organic particulate phosphorus from endogenous release sources, C 植被 is the organic phosphorus content from vegetation residues, O植被 is the contribution rate of organic phosphorus from vegetation residues, C 其它 is the content of other inorganic particulate phosphorus, I 其它 is the contribution rate of other inorganic particulate phosphorus, A 其它 is the adsorption-desorption equilibrium rate of phosphorus by other inorganic particles.

[0167] Finally, execute step S206 to calculate the relative contribution rate of particulate phosphorus from each source, endogenous release source, vegetation residue source and other inorganic particulate phosphorus sources based on the contribution rate of inorganic particulate phosphorus from multiple sources, the contribution rate of organic particulate phosphorus from multiple sources, the adsorption-desorption equilibrium rate of soil particulate matter on phosphorus from multiple sources, the contribution value of organic particulate phosphorus from endogenous release sources, the contribution value of organic particulate phosphorus from vegetation residue sources and the contribution value of other inorganic particulate phosphorus sources.

[0168] Specifically, by combining the composite fingerprint factors and isotope data, a comprehensive evaluation model was established to integrate the data of the composite fingerprint factors and carbon and nitrogen stable isotope technology to calculate the relative contribution rate of particulate phosphorus from each source.

[0169] In one embodiment, the calculation of the relative contribution of particulate phosphorus from each source, internal release source, vegetation residue source, and other inorganic particulate phosphorus sources includes:

[0170] The relative contribution of particulate phosphorus to each source is calculated as follows:

[0171]

[0172] The relative contribution of particulate phosphorus from endogenous release sources is calculated as follows:

[0173]

[0174] The relative contribution rate of particulate phosphorus from vegetation debris is calculated as follows:

[0175]

[0176] Calculate the relative contribution of particulate phosphorus from other inorganic particulate phosphorus sources:

[0177]

[0178] Where: P s is the relative contribution rate of particulate phosphorus in source area s, C Is is the content of inorganic particulate phosphorus in source area s, I s is the contribution rate of inorganic particulate phosphorus from source s, A s is the adsorption-desorption equilibrium rate of phosphorus by soil particles at source site s, C Osis the content of organic particulate phosphorus in source area s, O s is the contribution rate of organic particulate phosphorus from source s, Q1 is the contribution value of organic particulate phosphorus from endogenous release sources, Q2 is the contribution value of organic particulate phosphorus from vegetation residues, Q3 is the contribution value of other inorganic particulate phosphorus sources, n is the number of different source areas, P1 is the relative contribution rate of particulate phosphorus from endogenous release sources, P2 is the relative contribution rate of particulate phosphorus from vegetation residues, and P3 is the relative contribution rate of particulate phosphorus from other inorganic particulate phosphorus sources.

[0179] Finally, you can also perform model validation:

[0180] Repeat the above steps under different conditions, such as different seasons and hydrological scenarios, to verify the accuracy and stability of the model. Based on the feedback collected from actual applications, adjust and optimize the model parameters to improve its universality and accuracy.

[0181] This example provides a comprehensive, accurate, and practical method for tracing the source of particulate phosphorus in water. This method combines the advantages of composite fingerprint factors and carbon and nitrogen stable isotope technology to provide more accurate information on the source of particulate phosphorus and effectively identify the sources of inorganic and organic particulate matter, providing a scientific basis for water quality management and eutrophication control.

[0182] Implementing methods for tracing particulate phosphorus in water bodies based on carbon and nitrogen stable isotopes and composite fingerprint factors may present a range of technical and operational challenges. During sampling, samples may be non-representative or deteriorate during storage and transportation. To ensure this, it is necessary to ensure that sampling locations and times fully reflect the diversity of the study area, and to use appropriate preservation methods (such as freezing) and sterile containers to prevent compositional changes caused by microbial activity. Isotope analysis is sensitive to experimental conditions and may be affected by slight variations in sample preparation and handling. Strict laboratory operating standards and procedures should be adopted to ensure consistency at every step. Laboratory personnel should receive specialized training in isotope analysis techniques. Changes in environmental conditions (such as flow rate, temperature, and pH) may affect the adsorption-desorption equilibrium of particulate matter, thereby affecting the final traceability results. Key environmental parameters should be monitored and incorporated as covariates in the model to adjust for their influence on particulate matter behavior. Scenario analysis should be conducted to simulate traceability results under different environmental conditions to assess the robustness of the method.

[0183] Through the above measures, the problems that may arise during the implementation process can be effectively reduced, the reliability and applicability of the method can be improved, and better traceability effects can be achieved in practical applications.

[0184] This embodiment improves the accuracy and feasibility of tracing the source of particulate phosphorus in water bodies by combining composite fingerprint factor technology with carbon and nitrogen stable isotope technology. This method is based on a comprehensive analysis of multiple potential pollution sources, and uses their unique physical and chemical properties and isotopic composition to construct a formula to quantitatively evaluate the contribution rate of each pollution source to particulate phosphorus in water bodies. In addition, this embodiment also effectively combines composite fingerprint factors and isotope technology by calculating the adsorption-desorption equilibrium rate of phosphorus from particulate matter of each potential source, thereby distinguishing the contribution of different potential sources to the concentration of particulate phosphorus.

[0185] This example not only improves the accuracy of identifying particulate phosphorus sources in water, enhancing the scientific nature of particulate phosphorus source analysis, but also strengthens the scientific basis for environmental management and policy making. This is of great significance in guiding the formulation of water quality protection and governance measures, and provides strong technical support for water environment governance. The widespread application of this method will help environmental science researchers and policymakers better understand and address water pollution issues.

[0186] As an example, the contribution of particulate phosphorus from multiple different sources in a certain water area was calculated and analyzed using composite fingerprint factor technology and carbon and nitrogen isotope analysis technology. This water area is mainly affected by sources from five different land use types, namely farmland, riparian zone, peach orchard, woodland and grassland. In addition, the impact of endogenous release, vegetation residues and other sources is also considered. Composite fingerprint factor technology is used to analyze the contribution of inorganic particulate phosphorus from these potential sources, while isotope analysis-based technology is used to analyze the contribution of organic particulate phosphorus. The adsorption-desorption equilibrium rate of particulate matter on phosphorus from each source is based on the results of literature research, and the specific data are as follows:

[0187] ① Contribution rate of inorganic particulate phosphorus (composite fingerprint factor analysis):

[0188] Farmland: 25.20%

[0189] Shoreline: 17.06%

[0190] Taoyuan: 14.05%

[0191] Forest land: 12.36%

[0192] Grassland: 11.33%

[0193] ●Other inorganic particles: 20%

[0194] ② The content of inorganic particulate phosphorus in each source area C Is (Unit: mg / kg)

[0195] Farmland: 600

[0196] Shore zone: 500

[0197] Taoyuan: 400

[0198] Woodland: 350

[0199] Grassland: 300

[0200] ●Other inorganic particles: 550

[0201] ③Contribution rate of organic particulate phosphorus (isotope analysis):

[0202] Of the contribution of organic particulate phosphorus, exogenous inputs account for 65%, a proportion based on a comprehensive analysis of endogenous and exogenous inputs. Endogenous inputs primarily come from aquatic plants and microbial activity, while exogenous inputs primarily consist of source areas and vegetation residues (C3 and C4 plants) from different land use types. Their contributions are as follows:

[0203] Farmland: 10%

[0204] Shoreline: 12%

[0205] Taoyuan: 5%

[0206] Forest land: 7%

[0207] Grassland: 6%

[0208] Endogenous release: 35%

[0209] Vegetation debris: 25%

[0210] ④Content of organic particulate phosphorus in each source area C Os (Unit: mg / kg)

[0211] Farmland: 500

[0212] Shore zone: 400

[0213] Taoyuan: 350

[0214] Woodland: 450

[0215] Grassland: 300

[0216] ●Intrinsic release: 250

[0217] Vegetation debris: 450

[0218] ⑤ Adsorption-desorption equilibrium rate of phosphorus by particulate matter from different sources:

[0219] Farmland: 1.26

[0220] Shore zone: 0.73

[0221] Taoyuan: 1.10

[0222] Woodland: 0.85

[0223] Grassland: 0.61

[0224] ●Other inorganic particles: 1.21

[0225] step:

[0226] 1. Calculation formula:

[0227] The following formula is used to comprehensively evaluate the contribution of each source to particulate phosphorus, including:

[0228] The relative contribution of particulate phosphorus to each source is calculated as follows:

[0229]

[0230] The relative contribution of particulate phosphorus from endogenous release sources is calculated as follows:

[0231]

[0232] The relative contribution rate of particulate phosphorus from vegetation debris is calculated as follows:

[0233]

[0234] Calculate the relative contribution of particulate phosphorus from other inorganic particulate phosphorus sources:

[0235]

[0236] Where: P s is the relative contribution rate of particulate phosphorus in source area s, C Is is the content of inorganic particulate phosphorus in source area s, I s is the contribution rate of inorganic particulate phosphorus from source s, A s is the adsorption-desorption equilibrium rate of phosphorus by soil particles at source site s, C Os is the content of organic particulate phosphorus in source area s, O s is the contribution rate of organic particulate phosphorus from source s, Q1 is the contribution value of organic particulate phosphorus from endogenous release sources, Q2 is the contribution value of organic particulate phosphorus from vegetation residues, Q3 is the contribution value of other inorganic particulate phosphorus sources, and n is the number of different source areas.

[0237] The relationship model also includes an adsorption-desorption equilibrium rate calculation formula, including:

[0238] Calculate the adsorption-desorption equilibrium rate of phosphorus on particulate matter at source s as:

[0239]

[0240] Among them, As is the adsorption-desorption equilibrium rate of phosphorus by particulate matter at source s, Q e,s is the adsorption-desorption equilibrium of phosphorus on soil particles in the source area, Q o,s is the initial content of particulate phosphorus in soil particles or other inorganic particles in the source area;

[0241] Calculate the adsorption-desorption equilibrium rate of phosphorus from particulate matter of other inorganic particulate phosphorus sources:

[0242]

[0243] Among them, A 其他 is the adsorption-desorption equilibrium rate of phosphorus by particulate matter from other inorganic particulate phosphorus sources, Q e,其他 is the adsorption-desorption equilibrium of phosphorus by other inorganic particles, Q o,其他 It is the initial content of particulate phosphorus in other inorganic particulate matter.

[0244] The relationship model also includes 、 、 Calculation formula:

[0245]

[0246]

[0247]

[0248] Among them, C 内源 is the content of organic particulate phosphorus released endogenously, O 内源 is the contribution rate of endogenously released organic particulate phosphorus, C 植被 is the organic phosphorus content of vegetation residues, O 植被 is the contribution rate of organic phosphorus from vegetation residues, C 其它 is the content of other inorganic particulate phosphorus (sediment suspended), I 其它 is the contribution rate of other inorganic particulate phosphorus, A 其它 It is the adsorption-desorption equilibrium rate of phosphorus by other inorganic particles.

[0249] 2. Data calculation:

[0250] The data were substituted into the calculation for the contribution rate of endogenous release and organic phosphorus from vegetation residues, without considering the influence of the adsorption-desorption equilibrium rate.

[0251] 1) Contribution value of farmland:

[0252]

[0253] 2) Contribution of the shoreline:

[0254]

[0255] 3) Taoyuan's contribution value:

[0256]

[0257] 4) Contribution value of forest land:

[0258]

[0259] 5) Contribution of grassland:

[0260]

[0261] 6) Contribution of endogenous release:

[0262]

[0263] 7) Contribution value of vegetation residues:

[0264]

[0265] 8) Contribution of other inorganic particle sources

[0266]

[0267] 3. Calculation of total contribution value:

[0268] The total contribution of all sources is:

[0269]

[0270] 4. Calculation of relative contribution rate:

[0271] The relative contribution of each source is as follows:

[0272] Farmland

[0273]

[0274] Shore zone:

[0275]

[0276] Taoyuan:

[0277]

[0278] Woodlands:

[0279]

[0280] Grassland:

[0281]

[0282] ●Endogenous release:

[0283]

[0284] Vegetation debris:

[0285]

[0286] ●Other inorganic particles:

[0287]

[0288] After verification, the sum of the contribution rates of all sources is 1, and the calculation result is reasonable. Finally, the following can be produced and output Figure 3 The legend shown is a schematic diagram illustrating the relative contribution of particulate phosphorus from different sources.

[0289] The calculations in this example show that farmland remains the primary source of particulate phosphorus in water, accounting for 29.47% of the total. This analysis can provide an important reference for water quality management and help formulate pollution control strategies for different sources.

[0290] Through the above examples, the combination of composite fingerprint factor technology and isotope analysis can accurately calculate the contribution of different potential sources to particulate phosphorus in water bodies. This provides strong support for water quality management and can help develop more effective pollution control strategies.

[0291] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0292] like Figure 4 FIG. 1 is a schematic diagram of the hardware structure of an electronic device of the present invention, comprising:

[0293] at least one processor 401; and,

[0294] A memory 402 in communication with at least one of the processors 401; wherein,

[0295] The memory 402 stores instructions that can be executed by at least one of the processors. The instructions are executed by at least one of the processors so that at least one of the processors can execute the method for tracing the source of particulate phosphorus in water as described above.

[0296] Figure 4 A processor 401 is taken as an example.

[0297] The electronic device may further include an input device 403 and a display device 404 .

[0298] The processor 401 , the memory 402 , the input device 403 and the display device 404 may be connected via a bus or other means, with the bus connection being used as an example in the figure.

[0299] The memory 402 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer executable programs, and modules, such as the program instructions / modules corresponding to the water body particulate phosphorus tracing method in the embodiment of the present application, for example, Figure 1 、 Figure 2 The processor 401 executes various functional applications and data processing by running the non-volatile software programs, instructions and modules stored in the memory 402, thereby implementing the water body particulate phosphorus tracing method in the above embodiment.

[0300] The memory 402 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created based on the use of the method for tracing the source of particulate phosphorus in water bodies, etc. In addition, the memory 402 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the memory 402 may optionally include a memory remotely located relative to the processor 401, and these remote memories may be connected to a device for executing the method for tracing the source of particulate phosphorus in water bodies via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0301] The input device 403 can receive user clicks and generate signal input related to user settings and function control of the water body particulate phosphorus source tracing method. The display device 404 can include a display device such as a display screen.

[0302] The one or more modules are stored in the memory 402 and, when executed by the one or more processors 401, execute the method for tracing the source of particulate phosphorus in water in any of the above method embodiments.

[0303] The present invention conducts composite fingerprint factor analysis and isotope analysis on water samples. By combining the multi-parameter advantages of the composite fingerprint factor and the specificity of the isotope technology, the accuracy and feasibility of tracing the source of particulate phosphorus in water bodies are improved, more accurate tracing information is provided, and high-precision identification of the source of particulate phosphorus in inorganic and organic particulate matter is achieved.

[0304] An embodiment of the present invention provides a storage medium, which stores computer instructions. When a computer executes the computer instructions, it is used to execute all steps of the method for tracing the source of particulate phosphorus in water as described above.

[0305] In the context of the present disclosure, a storage medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. The storage medium may be a machine-readable signal medium or a machine-readable storage medium. Alternatively, the storage medium may be a non-transitory computer-readable storage medium, for example, a ROM, a random access memory (RAM), a compact disc read-only memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, or the like.

[0306] An embodiment of the present invention provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the method for tracing the source of particulate phosphorus in water as described above.

[0307] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A method for tracing the source of particulate phosphorus in water, characterized in that: include: Obtain data on particulate matter from multiple sources within the study area, including both inorganic and organic particles; Performing a composite fingerprint factor analysis on the inorganic particulate matter to obtain the contribution rates of inorganic particulate phosphorus from multiple sources; performing isotope analysis on the organic particulate matter to obtain contribution rates of organic particulate phosphorus from multiple sources; Determine the adsorption-desorption equilibrium rates of phosphorus on particulate matter from multiple sources; Based on the contribution rate of inorganic particulate phosphorus from multiple sources, the contribution rate of organic particulate phosphorus from multiple sources, and the adsorption-desorption equilibrium rate of particulate matter on phosphorus from multiple sources, the relative contribution rate of particulate phosphorus from each source is calculated.

2. The method for tracing the source of particulate phosphorus in water according to claim 1, characterized in that: The sources include multiple sources of different land use types, endogenous release sources, vegetation residue sources and other inorganic particulate phosphorus sources.

3. The method for tracing the source of particulate phosphorus in water according to claim 2, characterized in that: The performing of a composite fingerprint factor analysis on the inorganic particulate matter to obtain the inorganic particulate phosphorus contribution rates from multiple sources includes: performing a composite fingerprint factor analysis on the inorganic particulate matter to obtain the inorganic particulate phosphorus contribution rates from multiple source areas and other inorganic particulate phosphorus sources; The performing isotope analysis on the organic particulate matter to obtain the contribution rates of organic particulate phosphorus from multiple sources includes: performing isotope analysis on the organic particulate matter to obtain the contribution rates of organic particulate phosphorus from multiple source areas, endogenous release sources, and vegetation residue sources; The determination of the adsorption-desorption equilibrium rates of phosphorus by particulate matter from multiple sources includes calculating the adsorption-desorption equilibrium rates of phosphorus by soil particulate matter from multiple sources and the adsorption-desorption equilibrium rates of phosphorus by other inorganic particulate matter.

4. The method for tracing the source of particulate phosphorus in water according to claim 2, characterized in that: The calculation of the relative contribution rate of particulate phosphorus from each source based on the inorganic particulate phosphorus contribution rates from multiple sources, the organic particulate phosphorus contribution rates from multiple sources, and the adsorption-desorption equilibrium rate of particulate matter on phosphorus from multiple sources includes: Calculate the contribution of organic particulate phosphorus from endogenous release sources, the contribution of organic particulate phosphorus from vegetation debris, and the contribution of other inorganic particulate phosphorus sources; Based on the contribution rate of inorganic particulate phosphorus from multiple sources, the contribution rate of organic particulate phosphorus from multiple sources, the adsorption-desorption equilibrium rate of soil particulate matter on phosphorus from multiple sources, the contribution value of organic particulate phosphorus from endogenous release sources, the contribution value of organic particulate phosphorus from vegetation residue sources, and the contribution value of other inorganic particulate phosphorus sources, the relative contribution rate of particulate phosphorus from each source, endogenous release source, vegetation residue source and other inorganic particulate phosphorus sources is calculated.

5. The method for tracing the source of particulate phosphorus in water according to claim 4, characterized in that: The calculation of the relative contribution rate of particulate phosphorus from each source, internal release source, vegetation residue source and other inorganic particulate phosphorus sources includes: The relative contribution of particulate phosphorus to each source is calculated as follows: The relative contribution of particulate phosphorus from endogenous release sources is calculated as follows: The relative contribution rate of particulate phosphorus from vegetation debris is calculated as follows: Calculate the relative contribution of particulate phosphorus from other inorganic particulate phosphorus sources: Where: P s is the relative contribution rate of particulate phosphorus in source area s, C Is is the content of inorganic particulate phosphorus in source area s, I s is the contribution rate of inorganic particulate phosphorus from source s, A s is the adsorption-desorption equilibrium rate of phosphorus by soil particles at source site s, C Os is the content of organic particulate phosphorus in source area s, O s is the contribution rate of organic particulate phosphorus from source s, Q1 is the contribution value of organic particulate phosphorus from endogenous release sources, Q2 is the contribution value of organic particulate phosphorus from vegetation residues, Q3 is the contribution value of other inorganic particulate phosphorus sources, and n is the number of different source areas.

6. The method for tracing the source of particulate phosphorus in water according to claim 4, characterized in that: The calculation of the contribution value of organic particulate phosphorus from endogenous release sources, the contribution value of organic particulate phosphorus from vegetation residues, and the contribution value of other inorganic particulate phosphorus sources includes: The contribution of organic particulate phosphorus from endogenous release sources is calculated as: The contribution of organic particulate phosphorus from vegetation residues is calculated as: The contribution of other inorganic particulate phosphorus sources is calculated as: Among them, C 内源 is the organic particulate phosphorus content from endogenous release sources, O 内源 is the contribution rate of organic particulate phosphorus from endogenous release sources, C 植被 is the organic phosphorus content from vegetation residues, O 植被 is the contribution rate of organic phosphorus from vegetation residues, C 其它 is the content of other inorganic particulate phosphorus, I 其它 is the contribution rate of other inorganic particulate phosphorus, A 其它 is the adsorption-desorption equilibrium rate of phosphorus by other inorganic particles.

7. The method for tracing the source of particulate phosphorus in water according to claim 3, characterized in that: The calculation of the adsorption-desorption equilibrium rates of phosphorus by soil particulate matter and the adsorption-desorption equilibrium rates of phosphorus by other inorganic particulate matter from multiple source areas includes: Calculate the adsorption-desorption equilibrium rate of phosphorus on particulate matter at source s as: Among them, A s is the adsorption-desorption equilibrium rate of phosphorus by particulate matter at source s, Q e,s is the adsorption-desorption equilibrium of phosphorus on soil particles in the source area, Q o,s is the initial content of particulate phosphorus in soil particles or other inorganic particles in the source area; Calculate the adsorption-desorption equilibrium rate of phosphorus from particulate matter of other inorganic particulate phosphorus sources: Among them, A 其他 is the adsorption-desorption equilibrium rate of phosphorus by particulate matter from other inorganic particulate phosphorus sources, Q e,其他 is the adsorption-desorption equilibrium of phosphorus by other inorganic particles, Q o,其他 It is the initial content of particulate phosphorus in other inorganic particulate matter.

8. An electronic device, characterized in that: include: at least one processor; as well as, a memory communicatively connected to at least one of the processors; wherein, The memory stores instructions that can be executed by at least one of the processors, and the instructions are executed by at least one of the processors so that at least one of the processors can execute the method for tracing the source of particulate phosphorus in water as described in any one of claims 1 to 7.

9. A storage medium, characterized in that: The storage medium stores computer instructions, and when a computer executes the computer instructions, it is used to execute all steps of the method for tracing the source of particulate phosphorus in water as described in any one of claims 1 to 7.

10. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instruction is executed by a processor, the method for tracing the source of particulate phosphorus in water bodies as described in any one of claims 1 to 7 is implemented.

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