Water body particulate phosphorus tracing method and electronic equipment

Abstract

The invention discloses a water body particulate phosphorus tracing method and electronic equipment. The method comprises the following steps: acquiring data of particulate matters from multiple sources in a research area; performing composite fingerprint factor analysis on the inorganic particles to obtain inorganic particle state phosphorus contribution rates of multiple sources; performing isotope analysis on the organic particulate matters to obtain contribution rates of organic particulate phosphorus from multiple sources; determining the adsorption-desorption balance rate of the particles from the plurality of sources to phosphorus; and calculating the relative contribution rate of the particulate phosphorus of each source based on the contribution rate of the inorganic particulate phosphorus of the multiple sources, the contribution rate of the organic particulate phosphorus of the multiple sources and the adsorption-desorption equilibrium rate of the particulate matters of the multiple sources to the phosphorus. According to the method, the multi-parameter advantage of the composite fingerprint factor and the specificity of the isotope technology are combined, so that the tracing accuracy and feasibility of the particulate phosphorus in the water body are improved, more accurate tracing information is provided, and the high-precision identification of the source of the particulate phosphorus in inorganic and organic particulate matters is realized.

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 one of the main factors leading to eutrophication of water bodies, and its sources are complex, including industrial and agricultural wastewater discharge, atmospheric deposition, surface runoff, endogenous release sources, etc. Accurate tracing of particulate phosphorus in water bodies is crucial for effective water quality management and control strategies.

[0003] The composite fingerprint factor technology determines the possible source of particulate matter by analyzing its physical and chemical properties (such as particle size distribution, chemical composition and heavy metal content). This technology is highly adaptable and can select appropriate fingerprint factors according to different environmental conditions. However, when used alone, it is greatly affected by changes in environmental conditions and may cause unstable fingerprint information. Carbon and nitrogen stable isotope technology has high specificity in distinguishing organic matter produced by terrestrial and aquatic organisms. However, this technology lacks information when 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 pollution sources of particulate phosphorus over a large area, and integrate a variety of data (such as land use, meteorological data, and terrain information) to identify sources, but they are highly dependent on data, and data quality and coverage affect their effectiveness. Water quality models can simulate the transmission and transformation process of particulate phosphorus in water bodies and predict future changes, but they are based on a series of assumptions that may affect the accuracy and universality of the model, and the model output is very sensitive to parameter selection, which may lead 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 methods for tracing the source of particulate phosphorus in water bodies are inaccurate and cannot achieve high-precision identification of the sources 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: Obtain data on particulate matter from multiple sources in the study area, including inorganic and organic particulate matter; Performing composite fingerprint factor analysis on the inorganic particulate matter to obtain the inorganic particulate phosphorus contribution rates from multiple sources; Performing isotope analysis on the organic particulate matter to obtain contribution rates of organic particulate phosphorus from multiple sources; Determine the equilibrium rates of phosphorus adsorption-desorption 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.

[0008] Furthermore, the sources include multiple sources of different land use types, endogenous release sources, vegetation residue sources and other inorganic particulate phosphorus sources.

[0009] Further: The performing of composite fingerprint factor analysis on the inorganic particulate matter to obtain the inorganic particulate phosphorus contribution rates from multiple sources includes: performing 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 isotope analysis of the organic particulate matter to obtain the contribution rates of organic particulate phosphorus from multiple sources includes: isotope analysis of 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 method of determining 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.

[0010] Furthermore, the relative contribution rate of particulate phosphorus from each source is calculated 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 rate of particulate matter from multiple sources on phosphorus, including: Calculate the contribution of organic particulate phosphorus from endogenous release sources, the contribution of organic particulate phosphorus from vegetation residues, 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.

[0011] 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: The relative contribution of particulate phosphorus from each source is calculated as:

[0012] The relative contribution of particulate phosphorus from endogenous release sources is calculated as:

[0013] The relative contribution rate of particulate phosphorus from vegetation residues is calculated as follows:

[0014] The relative contribution of particulate phosphorus from other inorganic particulate phosphorus sources is calculated as follows:

[0015] 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 inorganic particulate phosphorus contribution rate of 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 the 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 sources.

[0016] 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: The contribution of organic particulate phosphorus from endogenous release sources is calculated as:

[0017] The contribution of organic particulate phosphorus from vegetation residues is calculated as:

[0018] The contribution of other inorganic particulate phosphorus sources is calculated as:

[0019] Among them, C 内源 is the content of organic particulate phosphorus 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 It is the adsorption-desorption equilibrium rate of phosphorus by other inorganic particles.

[0020] Furthermore, the calculation of the adsorption-desorption equilibrium rates of phosphorus by soil particles from multiple sources and the adsorption-desorption equilibrium rates of phosphorus by other inorganic particles includes: The adsorption-desorption equilibrium rate of phosphorus on particulate matter at source s is calculated as:

[0021] 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 other inorganic particulate phosphorus sources:

[0022] Among them, A 其他 Q is the adsorption-desorption equilibrium rate of other inorganic particulate phosphorus sources on particulate matter, 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.

[0023] The present invention provides an electronic device, comprising: at least one processor; and, 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 above.

[0024] 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.

[0025] 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.

[0026] 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

[0027] Figure 1 This is a workflow diagram of a method for tracing the source of particulate phosphorus in water according to an embodiment of the present invention; Figure 2 This is a work flow chart of a method for tracing the source of particulate phosphorus in water according to another embodiment of the present invention; Figure 3 A schematic diagram of the relative contribution rate of particulate phosphorus from different sources in one example of the present invention; Figure 4 The figure is a schematic diagram of the hardware structure of an electronic device of the present invention. DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. The same components are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0029] like Figure 1 The flowchart of a method for tracing the source of particulate phosphorus in water according to an embodiment of the present invention is shown, comprising: Step S101, obtaining data of particulate matter from multiple sources in a study area, wherein the particulate matter includes inorganic particulate matter and organic particulate matter; Step S102, performing composite fingerprint factor analysis on the inorganic particulate matter to obtain inorganic particulate phosphorus contribution rates from multiple sources; Step S103, performing isotope analysis on the organic particulate matter to obtain contribution rates of organic particulate phosphorus from multiple sources; Step S104, determining the adsorption-desorption equilibrium rate of phosphorus by particulate matter from multiple sources; Step S105, 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, the relative contribution rate of particulate phosphorus from each source is calculated.

[0030] Specifically, the present invention can be applied to electronic devices with processing capabilities, such as computers.

[0031] The present invention provides a method combining carbon and nitrogen stable isotope technology with composite fingerprint factor analysis, which takes into account the characteristics of inorganic and organic particulate matter and is used to accurately trace and quantify the different potential sources and contributions of particulate phosphorus in water bodies. By providing a comprehensive, accurate and practical method for tracing the source of particulate phosphorus in water bodies, it provides strong support for the control and management of eutrophication of water bodies.

[0032] 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.

[0033] First, step S101 is executed to obtain data of particulate matter from multiple sources in the study area, where the particulate matter includes inorganic particulate matter and organic particulate matter.

[0034] Specifically, sampling and classification are performed first.

[0035] Multiple sampling points were set up in the study area to cover possible 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 classified.

[0036] 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.

[0037] Specifically, sources of particulate matter include: Source areas of different land use types such as farmland, forest land, industrial area, cultivated land, grassland, etc.; 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; Endogenous release sources such as algae, plankton, and aquatic vascular plants; Other sources of inorganic particulate phosphorus such as atmospheric deposition, suspended release from bottom mud sediments, etc.

[0038] Among them, soil particulate matter in 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 in the source.

[0039] Then, the phosphorus content in inorganic and organic particles was determined separately. The physical properties (such as particle size and morphology) and chemical composition (such as heavy metal content and mineral type) of the inorganic part of the particles were analyzed. The carbon-nitrogen ratio and carbon-nitrogen isotope ratio (δ13C and δ15N) of the organic part of the particles were determined.

[0040] 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.

[0041] Specifically, the potential sources of inorganic particulate matter are determined through composite fingerprint factor analysis, which can be determined by measuring specific environmental indicators, such as mineral composition and heavy metal concentration. At the same time, the relationship between fingerprint factors and known pollution sources is analyzed by applying statistical models to determine the possible sources and relative contributions of each type of particulate matter, and the contribution rate of inorganic particulate phosphorus from multiple sources is obtained.

[0042] 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.

[0043] Specifically, the contribution rates of organic particulate phosphorus from multiple sources are obtained through carbon and nitrogen stable isotope analysis. Specifically, the isotope ratios of carbon and nitrogen in particulate organic matter are measured using mass spectrometry to identify its biogeochemical characteristics and sources. The isotope data is then analyzed to distinguish whether the organic particulate matter comes from terrestrial vegetation, aquatic plants, or microbial activities. Finally, the contribution rates of organic particulate phosphorus from multiple sources are obtained.

[0044] Then, step S104 is performed to determine the adsorption-desorption equilibrium rate of phosphorus by particulate matter from multiple sources.

[0045] 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 by field sampling and indoor experiments or by consulting literature data.

[0046] 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.

[0047] 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 of particulate phosphorus from each source.

[0048] Through the above method, the present invention not only improves the accuracy of identifying the source of particulate phosphorus in water, but also enhances the scientific basis for environmental management and policy formulation, which is of great significance for guiding the formulation of water quality protection and governance measures. In addition, the promotion and application of this method will help environmental science researchers and decision makers to better understand and solve water environment pollution problems.

[0049] 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.

[0050] like Figure 2 The flowchart of a method for tracing the source of particulate phosphorus in water in another embodiment of the present invention is shown, comprising: 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 source areas of multiple different land use types, endogenous release sources, vegetation residue sources, and other inorganic particulate phosphorus sources.

[0051] 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 inorganic particulate phosphorus sources.

[0052] 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.

[0053] Step S204, calculating the adsorption-desorption equilibrium rates of phosphorus by soil particles from multiple sources and the adsorption-desorption equilibrium rates of phosphorus by other inorganic particles.

[0054] 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.

[0055] 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 to 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.

[0056] 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 source areas of multiple different land use types, endogenous release sources, vegetation residue sources, and other inorganic particulate phosphorus sources.

[0057] Specifically, sampling and classification are performed first.

[0058] Multiple sampling points were set up in the study area to cover possible pollution sources, including key locations such as rivers, lakes, and estuaries. The collected particulate matter was filtered and centrifuged to ensure the integrity of the particulate matter. Potential sources of organic and inorganic particulate phosphorus were classified. The sources included multiple sources of different land use types, endogenous release sources, vegetation residue sources, and other inorganic particulate phosphorus sources.

[0059] Specifically, sources of particulate matter include: Source areas of different land use types such as farmland, forest land, industrial area, cultivated land, grassland, etc.; The source of C3 and C4 vegetation residues, i.e. the residues of C3 and C4 plants; Endogenous release sources such as algae, plankton, and aquatic vascular plants; Other sources of inorganic particulate phosphorus such as atmospheric deposition, suspended release from bottom mud sediments, etc.

[0060] Among them, soil particulate matter in 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 in the source.

[0061] Then, the phosphorus content in inorganic and organic particles was determined separately. The physical properties (such as particle size and morphology) and chemical composition (such as heavy metal content and mineral type) of the inorganic part of the particles were analyzed. The carbon-nitrogen ratio and carbon-nitrogen isotope ratio (δ13C and δ15N) of the organic part of the particles were determined.

[0062] More specifically, data on particulate matter from multiple sources within the study area were obtained, including: 1) Research area and sampling point settings: Select representative water bodies (such as rivers, lakes and wetlands) and conduct multiple sampling in different seasons (dry and wet seasons) to capture the particle characteristics under different environmental conditions.

[0063] 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.

[0064] 2) Sample collection: 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.

[0065] Centrifugation technology is used to separate sample particles from water to ensure the integrity of the particles.

[0066] 3) Determine the sample content: According to the characteristics of the samples, the phosphorus content in inorganic particles and organic particles was determined separately.

[0067] 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 inorganic particulate phosphorus sources.

[0068] Specifically, the potential sources of inorganic particulate matter are determined through composite fingerprint factor analysis, which can be determined by measuring specific environmental indicators, such as mineral composition and heavy metal concentration. At the same time, the relationship between fingerprint factors and known pollution sources is analyzed by applying statistical models to determine the possible sources and relative contributions of each type of particulate matter, and the inorganic particulate phosphorus contribution rates of multiple sources and other inorganic particulate phosphorus sources are obtained.

[0069] Among them, the composite fingerprint factor analysis includes: Composite Fingerprint Factor Analysis 1) Chemical analysis: Atomic absorption spectroscopy (AAS) is used to analyze the components in the 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 the particulate matter.

[0070] 2) Physical analysis: The particle size distribution of the particles was measured using a laser particle size analyzer.

[0071] The morphology and surface characteristics of the particles were analyzed by scanning electron microscopy (SEM).

[0072] 3) Data processing: By establishing the best fingerprint factor combination, a linear mixed model is used to establish the association between soil and other inorganic particulate phosphorus sources of different land types and particulate matter in water bodies, and the relative contribution ratio of different land types and other inorganic particulate phosphorus sources to water body particulate matter is quantitatively calculated. The currently commonly used mixed model is Walling, and the mixed model objective function is as follows: (I) 0 (II) (III) Where: C i is the concentration of fingerprint factor i of sediment target sample (water body 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; SKi 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 .

[0073] 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 as follows: (IV) Where: I K is the contribution rate of inorganic particulate phosphorus from source K; P K 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.

[0074] 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.

[0075] Specifically, through carbon and nitrogen stable isotope analysis, the contribution rates of organic particulate phosphorus from multiple sources, endogenous release sources, and vegetation residues were obtained. Specifically, mass spectrometry was used to determine the isotope ratios of carbon and nitrogen in particulate organic matter to identify its biogeochemical characteristics and sources. The isotope data was then analyzed to distinguish whether the organic particulate matter came from terrestrial vegetation, aquatic plants, or microbial activities. Finally, the contribution rates of organic particulate phosphorus from multiple sources, endogenous release sources, and vegetation residues were obtained.

[0076] Carbon and nitrogen stable isotope analysis 1) Isotope ratio determination: The stable isotope ratios of carbon and nitrogen in the organic fraction of particulate matter are determined using mass spectrometry techniques (e.g., isotope ratio mass spectrometry (IRMS)). 13 C and δ 15 N).

[0077] 2) Data interpretation: The isotope data in the sample is compared 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.

[0078] 3) Isotope mixing model: The endmember equilibrium mixing model (EMMA) is used to quantitatively analyze isotope data and calculate the contribution rate of each pollution source, where the endmembers include different source areas, endogenous release sources, and vegetation residue sources. The formula is as follows:

[0079] 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 the i-th end member, X i The characteristic value (δ 13 C and δ 15 N)). The characteristic values ​​include the characteristics of isotopes, such as δ 13 C (carbon-13 isotope ratio) and δ 15 N (nitrogen-15 isotope ratio) etc. Then, step S204 is executed to calculate the adsorption-desorption equilibrium rates of phosphorus by soil particles from multiple sources and the adsorption-desorption equilibrium rates of phosphorus by other inorganic particles.

[0080] 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 experimental calculations or by consulting literature.

[0081] In one embodiment, the calculation of the adsorption-desorption equilibrium rates of phosphorus by soil particles from multiple sources and the adsorption-desorption equilibrium rates of phosphorus by other inorganic particles includes: The adsorption-desorption equilibrium rate of phosphorus on particulate matter at source s is calculated as:

[0082] 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 other inorganic particulate phosphorus sources:

[0083] Among them, A 其他 Q is the adsorption-desorption equilibrium rate of other inorganic particulate phosphorus sources on particulate matter, 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.

[0084] The adsorption-desorption equilibrium rate under different source environmental conditions can also be evaluated by combining laboratory simulation calculations and field data analysis.

[0085] Among them, the adsorption-desorption equilibrium refers to the adsorption and desorption behavior of particulate phosphorus from different sources in the water body, which leads to the difference in the initial content of particulate phosphorus from the source. When the adsorption-desorption equilibrium rate is greater than 1, the actual meaning is adsorption behavior>desorption behavior, and when the adsorption-desorption equilibrium rate is less than 1, the actual meaning is adsorption behavior<desorption behavior.

[0086] For example, the adsorption-desorption equilibrium rate of phosphorus from particles from different sources: ● Farmland: 1.26 (the adsorption-desorption equilibrium of soil particles on phosphorus in this farmland is greater than the initial content, that is, the numerator is greater than the denominator, which actually means adsorption is greater than desorption behavior); ●Shoreside zone: 0.73 (the adsorption-desorption equilibrium of phosphorus by soil particles in the shoreside zone is less than the initial content, that is, the numerator is less than the denominator, which actually means adsorption is less than desorption behavior).

[0087] This embodiment 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.

[0088] 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.

[0089] 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: The contribution of organic particulate phosphorus from endogenous release sources is calculated as:

[0090] The contribution of organic particulate phosphorus from vegetation residues is calculated as:

[0091] The contribution of other inorganic particulate phosphorus sources is calculated as:

[0092] Among them, C 内源 is the content of organic particulate phosphorus 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 It is the adsorption-desorption equilibrium rate of phosphorus by other inorganic particles.

[0093] 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 to 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.

[0094] 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 of particulate phosphorus from each source.

[0095] In one embodiment, 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: The relative contribution of particulate phosphorus from each source is calculated as:

[0096] The relative contribution of particulate phosphorus from endogenous release sources is calculated as:

[0097] The relative contribution rate of particulate phosphorus from vegetation residues is calculated as follows:

[0098] The relative contribution of particulate phosphorus from other inorganic particulate phosphorus sources is calculated as follows:

[0099] 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 inorganic particulate phosphorus contribution rate of 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 the source area s, O sis 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.

[0100] Finally, you can also perform model validation: Repeat the above steps under different conditions, such as different seasons and different hydrological conditions, to verify the accuracy and stability of the model. According to the feedback information collected in actual applications, adjust and optimize the model parameters to improve its universality and accuracy.

[0101] 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, can provide more accurate particulate phosphorus tracing information, and effectively identify the sources of inorganic and organic particulate matter, providing a scientific basis for water quality management and eutrophication control.

[0102] A series of technical and operational challenges may be encountered when implementing methods based on carbon and nitrogen stable isotopes and composite fingerprint factors to trace the source of particulate phosphorus in water bodies. During the sampling process, problems may arise such as unrepresentative samples or sample deterioration during storage and transportation. To this end, it is necessary to ensure that the sampling points and sampling times can fully cover the diversity of the study area, and use appropriate preservation methods (such as frozen preservation) and sterile containers to preserve samples to prevent composition changes caused by microbial activity. If the isotope analysis is sensitive to experimental conditions, it may be affected by slight changes in sample preparation and operation. Strict laboratory operating standards and processes need to be adopted to ensure the consistency of each step of the operation. Laboratory personnel should be specially trained in isotope analysis techniques. Changes in environmental conditions (such as flow rate, temperature, pH value, etc.) may affect the adsorption-desorption equilibrium of particulate matter, thereby affecting the final traceability results. Monitor key environmental parameters and introduce these parameters as covariates in the model to adjust their effects on particulate matter behavior. Conduct scenario analysis to simulate traceability results under different environmental conditions to evaluate the robustness of the method.

[0103] 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.

[0104] 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 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 by particulate matter from each potential source, so that the contribution of different potential sources to the concentration of particulate phosphorus can be distinguished.

[0105] This embodiment not only improves the accuracy of identifying the source of particulate phosphorus in water bodies, enhances the scientific nature of particulate phosphorus source analysis, but also enhances the scientific basis for environmental management and policy formulation, which is of great significance for guiding the formulation of water quality protection and governance measures, and provides strong technical support for water environment governance. The promotion and application of this method will help environmental science researchers and decision makers better understand and solve water environment pollution problems.

[0106] As an example, the contribution of particulate phosphorus from multiple different sources in a certain water area was calculated and analyzed through the composite fingerprint factor technology and carbon and nitrogen isotope analysis technology. The water area is mainly affected by sources of 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 are also considered. The composite fingerprint factor technology is used to analyze the contribution of inorganic particulate phosphorus from these potential sources, while the 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: ① Contribution rate of inorganic particulate phosphorus (composite fingerprint factor analysis): Farmland: 25.20% ● Shore zone: 17.06% Taoyuan: 14.05% Forest land: 12.36% Grassland: 11.33% ●Other inorganic particles: 20% ②Content of inorganic particulate phosphorus in each source area C Is (Unit: mg / kg) Farmland: 600 ●Shore belt: 500 Taoyuan: 400 Woodland: 350 Grassland: 300 ●Other inorganic particles: 550 ③Contribution rate of organic particulate phosphorus (isotope analysis): Of the contribution of organic particulate phosphorus, exogenous input accounts for 65%, a proportion based on a comprehensive analysis of endogenous and exogenous inputs. Endogenous inputs mainly come from aquatic plants and microbial activities, while exogenous inputs are mainly composed of sources and vegetation residues (C3 and C4 plants) of different land use types, and their contribution ratios are as follows: Farmland: 10% ● Shore zone: 12% Taoyuan: 5% Forest land: 7% Grassland: 6% ● Endogenous release: 35% Vegetation debris: 25% ④Content of organic particulate phosphorus in each source area C Os (Unit: mg / kg) Farmland: 500 ●Shore belt: 400 Taoyuan: 350 Woodland: 450 Grassland: 300 ●Endogenous release: 250 Vegetation debris: 450 ⑤ Adsorption-desorption equilibrium rate of phosphorus by particulate matter from different sources: Farmland: 1.26 ●Shore zone: 0.73 Taoyuan: 1.10 Woodland: 0.85 Grassland: 0.61 ●Other inorganic particles: 1.21 step: 1. Calculation formula: The following formula is used to comprehensively evaluate the contribution of each source to particulate phosphorus, including: The relative contribution of particulate phosphorus from each source is calculated as:

[0107] The relative contribution of particulate phosphorus from endogenous release sources is calculated as:

[0108] The relative contribution rate of particulate phosphorus from vegetation residues is calculated as follows:

[0109] The relative contribution of particulate phosphorus from other inorganic particulate phosphorus sources is calculated as follows:

[0110] Where: Ps 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 inorganic particulate phosphorus contribution rate of 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 the 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 sources.

[0111] The relationship model also includes an adsorption-desorption equilibrium rate calculation formula, including: The adsorption-desorption equilibrium rate of phosphorus on particulate matter at source s is calculated as:

[0112] 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 other inorganic particulate phosphorus sources:

[0113] Among them, A 其他 Q is the adsorption-desorption equilibrium rate of other inorganic particulate phosphorus sources on particulate matter, 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.

[0114] The relationship model also includes , , Calculation formula:

[0115]

[0116]

[0117] 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 in vegetation residues, C 其它 is the content of other inorganic particulate phosphorus (sediment suspension), 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.

[0118] 2. Data calculation: 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.

[0119] 1) Contribution value of farmland:

[0120] 2) Contribution of the shore zone:

[0121] 3) Taoyuan's contribution value:

[0122] 4) Contribution value of forest land:

[0123] 5) Contribution of grassland:

[0124] 6) Contribution of endogenous release:

[0125] 7) Contribution of vegetation residues:

[0126] 8) Contribution of other inorganic particle sources

[0127] 3. Calculation of total contribution value: The total contribution of all sources is:

[0128] 4. Calculation of relative contribution rate: The relative contribution of each source is as follows: Farmland:

[0129] ●Shoreside zone:

[0130] Taoyuan:

[0131] Woodland:

[0132] Grassland:

[0133] ●Endogenous release:

[0134] Vegetation debris:

[0135] ●Other inorganic particles:

[0136] 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 to illustrate the relative contribution of particulate phosphorus from different sources.

[0137] Through the calculation of this embodiment, it can be found that farmland is still the main source of particulate phosphorus in water bodies, accounting for 29.47% of the total contribution. This analysis result can provide an important reference for water quality management and help better formulate pollution control strategies for different sources.

[0138] Through the above examples, the composite fingerprint factor technology combined with the isotope analysis technology can accurately calculate the contribution rate of different potential sources to particulate phosphorus in waters. This provides strong support for water quality management and can help formulate more effective pollution control strategies.

[0139] It should be understood that the order of execution of the steps in the above embodiment does not necessarily 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 embodiment of the present invention.

[0140] like Figure 4 The figure shows a hardware structure diagram of an electronic device of the present invention, including: at least one processor 401; and, A memory 402 is communicatively connected to at least one of the processors 401; wherein, The memory 402 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 above.

[0141] Figure 4 A processor 401 is taken as an example.

[0142] The electronic device may further include: an input device 403 and a display device 404 .

[0143] The processor 401, the memory 402, the input device 403 and the display device 404 may be connected via a bus or other means, and the figure takes the connection via a bus as an example.

[0144] 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 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, that is, the method for tracing the source of particulate phosphorus in water in the above embodiment is implemented.

[0145] 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 according to 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 arranged 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.

[0146] The input device 403 can receive user clicks and generate signal inputs related to user settings and function control of the water body particulate phosphorus source tracing method. The display device 404 can include display devices such as a display screen.

[0147] The one or more modules are stored in the memory 402, and when executed by the one or more processors 401, the method for tracing the source of particulate phosphorus in water in any of the above method embodiments is executed.

[0148] 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.

[0149] 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.

[0150] 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, device, or apparatus. The storage medium may be a machine-readable signal medium or a machine-readable storage medium. Alternatively, the storage medium may be a non-temporary computer-readable storage medium, for example, a non-temporary computer-readable storage medium may be a ROM, a random access memory (RAM), a compact disc read-only memory (CD-ROM), a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0151] 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.

[0152] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached 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 in the study area, including inorganic and organic particulate matter; Performing composite fingerprint factor analysis on the inorganic particulate matter to obtain the inorganic particulate phosphorus contribution rates from multiple sources; Performing isotope analysis on the organic particulate matter to obtain contribution rates of organic particulate phosphorus from multiple sources; Determine the equilibrium rates of phosphorus adsorption-desorption 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 sources from multiple 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 composite fingerprint factor analysis on the inorganic particulate matter to obtain the inorganic particulate phosphorus contribution rates from multiple sources includes: performing 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 isotope analysis of the organic particulate matter to obtain the contribution rates of organic particulate phosphorus from multiple sources includes: isotope analysis of 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 method of determining 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 method of calculating 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 rate of particulate matter from multiple sources on phosphorus comprises: Calculate the contribution of organic particulate phosphorus from endogenous release sources, the contribution of organic particulate phosphorus from vegetation residues, 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, endogenous release source, vegetation residue source and other inorganic particulate phosphorus sources includes: The relative contribution of particulate phosphorus from each source is calculated as: The relative contribution of particulate phosphorus from endogenous release sources is calculated as: The relative contribution rate of particulate phosphorus from vegetation residues is calculated as follows: The relative contribution of particulate phosphorus from other inorganic particulate phosphorus sources is calculated as follows: 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 inorganic particulate phosphorus contribution rate of source s, A s is the adsorption-desorption equilibrium rate of soil particles to phosphorus at source site s, C Os is the content of organic particulate phosphorus in the 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 sources.

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 content of organic particulate phosphorus 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 It 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 particles from multiple sources and the adsorption-desorption equilibrium rates of phosphorus by other inorganic particles includes: The adsorption-desorption equilibrium rate of phosphorus on particulate matter at source s is calculated 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 other inorganic particulate phosphorus sources: Among them, A 其他 Q is the adsorption-desorption equilibrium rate of other inorganic particulate phosphorus sources on particulate matter, 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, which, when executed by a computer, are 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 / instructions are 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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