Urban agglomeration nitrogen metabolism analysis method and statistical system, device and storage medium

Abstract

The invention discloses an urban agglomeration nitrogen metabolism analysis method, a statistical system, a statistical device and a storage medium. The method comprises the following steps: counting the total nitrogen output amount of each department of each city; obtaining the total economic output and a production and investment complete consumption coefficient matrix of each department of each city; correlating the total nitrogen output amount and the total economic output amount of each department of each city to obtain a direct nitrogen output coefficient; obtaining a nitrogen output complete consumption matrix by utilizing the correlation between the direct nitrogen output coefficient and the production and investment complete consumption coefficient matrix; processing the total nitrogen output amount of each department of each city on the basis of a nitrogen output complete consumption matrix to obtain a nitrogen output traffic matrix, wherein the nitrogen output traffic matrix is used for representing a nitrogen flow direction relationship among the departments of each city; according to the design, the nitrogen metabolism is associated with the economic output condition of each department in the urban agglomeration, and the nitrogen flow relationship among the departments is embodied, so that the nitrogen metabolism research can be supervised and managed and deepened.

Description

Technical Field

[0001] The present invention relates to the field of computer accounting technology, and in particular to an urban agglomeration nitrogen metabolism analysis method and a statistical system, device, and storage medium. Background Art

[0002] With the acceleration of urbanization and the continuous growth of population, cities are getting larger and larger, and gradually developing into large-scale urban agglomerations. The production factors of urban agglomerations are highly concentrated, and the economic activities are intensive, which makes the resource and environmental problems complex and diverse. Urban development and human activities increase nitrogen emissions, which not only have a profound impact on the environment, but also threaten human health and social sustainable development. In this context, the nitrogen metabolism problem of urban agglomerations has received more and more attention. Therefore, it is of great significance to study the nitrogen metabolism of urban agglomerations.

[0003] Nitrogen metabolism refers to the circulation and transformation of nitrogen in different ecosystems and human activities. Paying attention to the nitrogen metabolism of multiple cities and multiple sectors in an urban agglomeration can help reveal the interdependence between cities.

[0004] At present, common nitrogen metabolism simulation methods include material flow analysis and input-output analysis. Material flow analysis focuses on calculating the flow of nitrogen generated by different human and natural activities in the city, but it is difficult to reflect the nitrogen output and flow relationship between different departments in the city, resulting in the inability of management departments to implement relevant work and to urge various departments to cooperate with each other and deepen the research on nitrogen metabolism. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an urban agglomeration nitrogen metabolism analysis method and a statistical system, device, and storage medium, which associates nitrogen metabolism with the economic output of various departments in the urban agglomeration, reflects the nitrogen flow relationship between various departments, and facilitates supervision and management and deepens nitrogen metabolism research.

[0006] According to the first aspect of the present invention, the urban agglomeration nitrogen metabolism analysis method is applied to calculate the nitrogen metabolism flow between multiple departments of at least one city in the region, and the urban agglomeration nitrogen metabolism analysis method includes: counting the total nitrogen output of each department in each city; obtaining the total economic output of each department in each city and the production and investment complete consumption coefficient matrix, wherein the production and investment complete consumption coefficient matrix is ​​obtained based on the complete consumption coefficient of each department in each city, the complete consumption coefficient is used to characterize the production and investment ratio of the department in the production process, and the production and investment complete consumption coefficient matrix is ​​used to characterize the production and investment relationship between various departments in each city; correlating the total nitrogen output of each department in each city with the total economic output to obtain a direct nitrogen output coefficient; correlating the direct nitrogen output coefficient with the production and investment complete consumption coefficient matrix to obtain a nitrogen output complete consumption matrix; processing the total nitrogen output of each department in each city based on the nitrogen output complete consumption matrix to obtain a nitrogen output flow matrix, and the nitrogen output flow matrix is ​​used to characterize the nitrogen flow relationship between various departments in each city; outputting and presenting the nitrogen output flow matrix.

[0007] The urban agglomeration nitrogen metabolism analysis method according to the embodiment of the present invention has at least the following beneficial effects:

[0008] The urban agglomeration nitrogen metabolism analysis method of the present invention first counts the total nitrogen output of each department in each city, and then obtains the total economic output and the production and investment complete consumption coefficient matrix of each department in each city. The production and investment complete consumption coefficient matrix characterizes the production and investment relationship between each department in each city. Therefore, the total economic output and the production and investment complete consumption coefficient matrix can know the flow direction of the output between each department in each city. Generally speaking, the flow direction of the output is related to the flow direction of nitrogen. The design associates the total nitrogen output of each department in each city with the total economic output to obtain the direct nitrogen output coefficient, and then associates the direct nitrogen output coefficient with the production and investment complete consumption coefficient matrix to obtain the nitrogen output complete consumption matrix. At this time, the nitrogen output complete consumption matrix can show the nitrogen flow coefficient between each department. Finally, by calculating the total nitrogen output of each department in each city and the nitrogen output complete consumption matrix, the nitrogen output flow matrix can be obtained, thereby characterizing the nitrogen flow relationship between each department in each city. The design associates nitrogen metabolism with the economic output of each department in the urban agglomeration, reflecting the nitrogen flow relationship between each department, so as to facilitate supervision and management and deepen nitrogen metabolism research.

[0009] According to some embodiments of the present invention, the step of processing the total nitrogen output of each department in each city based on the nitrogen output complete consumption matrix to obtain the nitrogen output flow matrix includes: using the total nitrogen output of each department in each city Construct the nitrogen output using the final matrix Z, where Represents the total nitrogen output of department j in city s; the nitrogen output flow matrix F is: F=Z×N, where N is the nitrogen output complete consumption matrix.

[0010] According to some embodiments of the present invention, the step of associating the direct nitrogen output coefficient with the production and investment complete consumption coefficient matrix to obtain the nitrogen output complete consumption matrix includes:

[0011] Using the total nitrogen export coefficients of each city and each department Construct the nitrogen output complete consumption matrix N, where represents the total nitrogen output coefficient of the j department in city s;

[0012] Total nitrogen output coefficient for: in, represents the direct nitrogen output coefficient of the j department in city s, and B is the matrix of total consumption coefficients of production and investment;

[0013]

[0014] in, represents the total nitrogen output of department j in city s, Represents the total economic output of sector j in city s.

[0015] According to some embodiments of the present invention, the total nitrogen output of each department in each city includes: statistically calculating the total nitrogen emissions of regional industrial clusters; obtaining an energy balance sheet for each city, wherein the energy balance sheet is used to characterize the energy usage of each department in each city; comprehensively analyzing the total nitrogen emissions of regional industrial clusters and the energy balance sheet to obtain comprehensive emission data; and allocating the comprehensive emission data to each department in each city to form the total nitrogen output of each department in each city.

[0016] According to some embodiments of the present invention, the total nitrogen emissions of industrial clusters in the statistical region include: dividing the industrial clusters in the region into multiple nitrogen sub-emission systems; establishing a nitrogen sub-emission model corresponding to each nitrogen sub-emission system according to the differences in each nitrogen sub-emission system, wherein the establishment of the nitrogen sub-emission model includes establishing a material flow framework based on the flow process of the input material in the nitrogen sub-emission system based on the material flow analysis method, analyzing the nitrogen emissions of the input material in the material flow framework based on the emission factor method to obtain a relationship model between the input material and the nitrogen emissions in the nitrogen sub-emission model; calculating the nitrogen emissions of each nitrogen sub-emission system according to the input material; and integrating the nitrogen emissions of each nitrogen sub-emission system to obtain the total nitrogen emissions of the regional industrial cluster.

[0017] According to some embodiments of the present invention, there are multiple cities, and the production-investment complete consumption coefficient matrix is ​​used to characterize the production-investment relationship between different departments in the same city and the production-investment relationship between different departments in different cities.

[0018] According to the statistical system of the second aspect of the present invention, it is used to execute the urban agglomeration nitrogen metabolism analysis method disclosed in any of the above embodiments, including: a nitrogen output statistical module, which counts the total nitrogen output of each department in each city; an output acquisition module, which obtains the total economic output of each department in each city and the total production and investment consumption coefficient matrix; a calculation module, which associates the total nitrogen output and economic output of each department in each city to obtain a direct nitrogen output coefficient; a first analysis module, which associates the direct nitrogen output coefficient with the production and investment consumption coefficient matrix to obtain a nitrogen output complete consumption matrix; a second analysis module, which processes the total nitrogen output of each department in each city based on the nitrogen output complete consumption matrix to obtain a nitrogen output flow matrix, and the nitrogen output flow matrix is ​​used to characterize the nitrogen flow relationship between various departments in each city; an output module, which outputs and presents the nitrogen output flow matrix.

[0019] The statistical system according to the embodiment of the present invention has at least the following beneficial effects:

[0020] The statistical system of the present invention, by executing the urban agglomeration nitrogen metabolism analysis method disclosed in any of the above embodiments, associates nitrogen metabolism with the economic output of each department in the urban agglomeration, and reflects the nitrogen flow relationship between each department, so as to facilitate supervision and management and deepen nitrogen metabolism research.

[0021] According to the control device of the third aspect of the embodiment of the present invention, the control device includes a memory and a processor, the memory stores a computer program, and the processor implements the urban agglomeration nitrogen metabolism analysis method disclosed in any of the above embodiments when executing the computer program.

[0022] According to the computer-readable storage medium of the fourth aspect of the present invention, the computer-readable storage medium stores a computer program, and is characterized in that when the computer program is executed by a processor, the urban agglomeration nitrogen metabolism analysis method disclosed in any of the above embodiments is implemented.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1A first flow chart of one embodiment of the urban agglomeration nitrogen metabolism analysis method of the present invention;

[0026] Figure 2 A second flow chart of one embodiment of the urban agglomeration nitrogen metabolism analysis method of the present invention;

[0027] Figure 3 A third flow chart of one embodiment of the urban agglomeration nitrogen metabolism analysis method of the present invention;

[0028] Figure 4 This is a principle structural block diagram of one embodiment of the statistical system of the present invention.

[0029] Reference numerals:

[0030] Nitrogen output statistics module 410; output acquisition module 420; calculation module 430;

[0031] A first analysis module 440 ; a second analysis module 450 ; and an output module 460 . DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] like Figure 1 As shown, the urban agglomeration nitrogen metabolism analysis method according to the first aspect of the present invention is applied to calculate the nitrogen metabolism flow between multiple departments of at least one city in a region, and the urban agglomeration nitrogen metabolism analysis method includes:

[0037] S110. Count the total nitrogen output of each department in each city;

[0038] S120, obtaining the total economic output of each department in each city and the production and investment complete consumption coefficient matrix, wherein the production and investment complete consumption coefficient matrix is ​​obtained based on the complete consumption coefficient of each department in each city, the complete consumption coefficient is used to characterize the production and investment ratio of the department in the production process, and the production and investment complete consumption coefficient matrix is ​​used to characterize the production and investment relationship between each department in each city;

[0039] S130, correlating the total nitrogen output of each sector in each city with the total economic output to derive the direct nitrogen export coefficient;

[0040] S140, using the direct nitrogen output coefficient to associate with the production and investment complete consumption coefficient matrix to obtain a nitrogen output complete consumption matrix;

[0041] S150, processing the total nitrogen output of each department in each city based on the nitrogen output complete consumption matrix to obtain a nitrogen output flow matrix, where the nitrogen output flow matrix is ​​used to characterize the nitrogen flow relationship between each department in each city;

[0042] S160. Output and present the nitrogen output flow matrix.

[0043] It is understandable that the total economic output of each department in each city and the total consumption coefficient matrix of production and investment can be obtained from the database of the government department. It is understandable that the total economic output of each department in each city can be presented in the form of a matrix, with the various departments of each city arranged in sequence to form the vertical axis, and the total consumption coefficient matrix of production and investment reflects the relationship between departments. The various departments of each city are arranged in sequence to form the vertical axis, and at the same time, the various departments of each city are arranged in sequence to form the horizontal axis. The total consumption coefficient is filled in at the intersection of departments to characterize the proportional relationship between production and investment between departments.

[0044] The urban agglomeration nitrogen metabolism analysis method of the present invention first counts the total nitrogen output of each department in each city, and then obtains the total economic output and the production and investment complete consumption coefficient matrix of each department in each city. The production and investment complete consumption coefficient matrix characterizes the production and investment relationship between each department in each city. Therefore, the total economic output and the production and investment complete consumption coefficient matrix can know the flow direction of the output between each department in each city. Generally speaking, the flow direction of the output is related to the flow direction of nitrogen. The design associates the total nitrogen output of each department in each city with the total economic output to obtain the direct nitrogen output coefficient, and then associates the direct nitrogen output coefficient with the production and investment complete consumption coefficient matrix to obtain the nitrogen output complete consumption matrix. At this time, the nitrogen output complete consumption matrix can show the nitrogen flow coefficient between each department. Finally, by calculating the total nitrogen output of each department in each city and the nitrogen output complete consumption matrix, the nitrogen output flow matrix can be obtained, thereby characterizing the nitrogen flow relationship between each department in each city. The design associates nitrogen metabolism with the economic output of each department in the urban agglomeration, reflecting the nitrogen flow relationship between each department, so as to facilitate supervision and management and deepen nitrogen metabolism research.

[0045] In some embodiments of the present invention, the process of processing the total nitrogen output of each department in each city based on the nitrogen output complete consumption matrix to obtain the nitrogen output flow matrix includes:

[0046] Using the total nitrogen output of each city by sector Construct the nitrogen output using the final matrix Z, where represents the total nitrogen output of the j department in city s;

[0047] The nitrogen output flow matrix F is: F=Z×N, where N is the nitrogen output complete consumption matrix.

[0048] After obtaining the total nitrogen output of each department in each city, the nitrogen output final use matrix Z can be constructed using the total nitrogen output. The departments of each city are arranged in sequence to form the vertical axis of the final use matrix Z. Fill in the final usage matrix Z accordingly.

[0049] In some embodiments of the present invention, the process of associating the direct nitrogen output coefficient with the production and investment complete consumption coefficient matrix to obtain the nitrogen output complete consumption matrix includes:

[0050] Using the total nitrogen export coefficients of each city and each department Construct the nitrogen output complete consumption matrix N, where represents the total nitrogen output coefficient of the j department in city s;

[0051] Total nitrogen output coefficient for: in, represents the direct nitrogen output coefficient of the j department in city s, and B is the matrix of total consumption coefficients of production and investment;

[0052]

[0053] in, represents the total nitrogen output of department j in city s, Represents the total economic output of sector j in city s.

[0054] B is the production and investment complete consumption coefficient matrix. The vertical axis of the production and investment complete consumption coefficient matrix B is formed by arranging the various departments of each city in sequence, and the horizontal axis of the production and investment complete consumption coefficient matrix B is formed by arranging the various departments of each city in sequence. The corresponding complete consumption coefficient is filled in the intersection of departments to represent the flow of output between departments, and the output of each department in each city is and Divide to get Covers the relationship between total nitrogen output and total economic output, and then Multiplying with the production input complete consumption coefficient matrix B, the nitrogen output complete consumption matrix N is added with the nitrogen flow characteristics based on the economic output flow characteristics of each department in each city. Among them, the horizontal axis of the nitrogen output complete consumption matrix N is formed by the various departments of each city arranged in sequence, and the vertical axis of the nitrogen output complete consumption matrix N is formed by the various departments of each city arranged in sequence.

[0055] Final utilization contains total nitrogen output The nitrogen output final use matrix Z is multiplied by the nitrogen output complete consumption matrix N with the flow characteristics of nitrogen added to obtain the nitrogen output flow matrix F. The horizontal axis of the nitrogen output flow matrix F is formed by arranging the departments of each city in sequence, and the vertical axis of the nitrogen output flow matrix F is formed by arranging the departments of each city in sequence. The nitrogen output flow f is filled in the intersection of the departments. ja-jb , f ja-jb is the nitrogen output flow from department a to department b.

[0056] In some embodiments of the present invention, there are multiple cities, and the production-investment complete consumption coefficient matrix is ​​used to characterize the production-investment relationship between different departments in the same city and the production-investment relationship between different departments in different cities.

[0057] In some embodiments of the present invention, Figure 2 As shown, the total nitrogen output of each sector in each city includes:

[0058] S210, total nitrogen emissions from industrial clusters in statistical regions;

[0059] S220, obtaining an energy balance sheet for each city, where the energy balance sheet is used to characterize energy usage of each department in each city;

[0060] S230. Comprehensively analyze the total nitrogen emissions and energy balance of regional industrial clusters to obtain comprehensive emission data;

[0061] S240. Allocate the comprehensive emission data to each department in each city to form the total nitrogen output of each department in each city.

[0062] In step S210, the total amount of nitrogen emissions can be obtained based on the input of input materials in the regional industrial cluster and the nitrogen emissions in the industrial production process. For service industries, some industries, finance and other industry sectors, the total amount of nitrogen emissions cannot be obtained by simply calculating the nitrogen material flow in step S210. Therefore, in step S220, the energy balance sheets published by various cities are obtained, from which the energy usage of various departments in various cities can be obtained. The energy balance sheet and the total amount of nitrogen emissions calculated in step S210 have partially overlapping data, and the overlapping data are ignored. The total amount of nitrogen emissions of some departments added to the energy balance sheet are used as supplements to form comprehensive nitrogen emission data, and then the comprehensive emission data are allocated to each department according to the relationship between each department and the actual situation.

[0063] In some embodiments of the present invention, Figure 3 As shown, the total nitrogen emissions of the industrial clusters in the statistical area include:

[0064] S310, dividing the industrial clusters in the region into multiple nitrogen emission sub-systems;

[0065] S320, establishing a nitrogen sub-emission model corresponding to each nitrogen sub-emission system according to the differences of each nitrogen sub-emission system, wherein the establishment of the nitrogen sub-emission model includes establishing a material flow framework according to the flow process of the input material in the nitrogen sub-emission system based on the material flow analysis method, and analyzing the nitrogen emission of the input material in the material flow framework based on the emission factor method to obtain a relationship model between the input material and the nitrogen emission in the nitrogen sub-emission model;

[0066] S330, calculating the nitrogen emission of each nitrogen emission sub-system according to the input substances;

[0067] S340. Integrate the nitrogen emissions of each nitrogen emission sub-system to obtain the total nitrogen emissions of the regional industrial cluster.

[0068] In each nitrogen sub-emission system, the situations involving nitrogen emissions are analyzed based on the nitrogen material flow, and the nitrogen emissions in the corresponding situations are calculated according to the emission factor method. Specifically, the emission factors can be obtained from the Greenhouse Gas Inventory Guidelines and Provincial Greenhouse Gas Inventory Compilation Guidelines issued by the IPCC (Intergovernmental Panel on Climate Change).

[0069] Specifically, the nitrogen emission system includes the nitrogen emission system of farmland. The nitrogen emission in the nitrogen emission model of farmland is:

[0070]

[0071] Among them, CL OUT is the nitrogen emission from farmland; CLOUT Crop,i Refers to nitrogen emissions from crop production, i including four crops used as human food, livestock feed, aquaculture feed and industrial materials; CLOUT Str,i Refers to nitrogen emissions from straw production, i including five types of straw used as feed, fuel in rural areas, industrial materials, recycled to farmland and burned in fields; CLOUT Loss,i It refers to the nitrogen emission caused by Nr loss during crop production, including six situations: NH3, N2, N2O, NOx emissions, river runoff and groundwater leaching.

[0072] The nitrogen emission system includes the nitrogen emission system of grassland. The nitrogen emission in the grassland nitrogen emission model is:

[0073]

[0074] Among them, GL OUT is the nitrogen emission from grassland, GLOUT Product is the nitrogen emissions from animal products from grazing livestock; GLOUT Loss,i It refers to the nitrogen emission of grassland Nr loss, including NH3, N2, N2O, NOx emissions and leaching.

[0075] The nitrogen emission system includes the nitrogen emission system of forests. The nitrogen emission in the nitrogen emission model of forests is:

[0076]

[0077] Among them, FR OUT is the nitrogen emissions from forests, FROUT Timber Nitrogen emissions from wood production; FROUT Loss,i is the nitrogen emission from forest Nr loss, i including three situations: N2, N2O emissions and river runoff.

[0078] The nitrogen emission system includes the nitrogen emission system of livestock breeding. The nitrogen emission in the nitrogen emission model of livestock breeding is:

[0079]

[0080] Among them, LS OUT is nitrogen emissions from livestock farming, LSOUT Meat,i is the nitrogen emissions from livestock products, i refers to the 2 livestock products transferred to the human subsystem or exported;

[0081] LSOUT lndu LSOUT is the nitrogen emissions from livestock products not used as food, Exc,i It is the nitrogen emission from livestock excrement, including five situations: recycling to farmland, rivers, runoff loss, leaching to groundwater, and NH3 volatilization.

[0082] The nitrogen emission system includes the nitrogen emission system of aquaculture. The nitrogen emission in the nitrogen emission model of aquaculture is:

[0083]

[0084] Among them, AQ OUT AQOUT is the nitrogen emissions from aquaculture. Meat,i Nitrogen emissions from aquaculture, i including both aquatic products that can be transferred to humans or livestock and aquatic products exported to external systems, AQOUT Loss,i Nitrogen emissions are nitrogen losses in aquaculture production, including five situations: N2, N2O, NH3 emissions, river runoff and sediments.

[0085] The nitrogen emission system includes the industrial nitrogen emission system. The nitrogen emission in the industrial nitrogen emission model is:

[0086]

[0087] Among them, ID 0UT is the nitrogen emissions from industry, IDOUT Fer is the nitrogen emissions from Nr fertilizer production; IDOUT NA,i , is the nitrogen emissions from industrial products made from synthetic NH3 (NA), including synthetic fibers, pharmaceuticals, nitrile rubber, synthetic detergents, plastics, nitric acid, explosives and other products (excluding fertilizers); IDOUT NB,i is the nitrogen emissions from industrial products made from materials transferred from agriculture and forestry (NB), i including cotton, tobacco, silk, leather, sheepskin, wool, wooden furniture, etc., IDOUT Loss,iIt is the nitrogen emission caused by Nr loss in the industrial production process, including four situations: wastewater discharge from industrial wastewater treatment plants, NOx emissions, N2 emissions during denitrification, and N2O emissions.

[0088] The nitrogen emission system includes the nitrogen emission system of urban green space. The nitrogen emission in the nitrogen emission model of urban green space is:

[0089]

[0090] Among them, UG OUT is the nitrogen emission from urban green space, UGOUT Clip,i UGOUT is the amount of nitrogen removed by lawn and tree trimming, including recycling the removed nitrogen to green land, sending it to landfill, and incinerating it. Loss,i Nitrogen emissions are nitrogen losses in green spaces, including NH3 volatilization, river runoff, N2 emissions, N2O emissions and leakage to groundwater.

[0091] The nitrogen emission system includes the nitrogen emission system of human activities. The nitrogen emission in the nitrogen emission model of human activities is:

[0092]

[0093] Among them, HM OUT is the nitrogen emissions from human activities, HMOUT WW,i HMOUT is the nitrogen emission from human waste, which includes three situations: recycling to farmland, sending to sewage treatment plants, discharging to surface water or leaching to groundwater; WG,i is the nitrogen emission of garbage, i including two types of garbage; HMOUT NOx,i is the nitrogen emissions from fuel consumption, including HMIN Fuel and HMIN Str 2 cases, among which HMIN Fuel is the nitrogen emissions from household fossil fuel consumption, HMIN Str is the nitrogen emission from straw used as cooking biofuel.

[0094] The nitrogen emission system includes the nitrogen emission system of pets. The nitrogen emission in the nitrogen emission model of pets is:

[0095]

[0096] Among them, PT OUT For pets' nitrogen emissions, is the nitrogen emissions from pet waste, including both cases where it is sent to landfill or recycled into urban green land.

[0097] The nitrogen emission system includes the nitrogen emission system of garbage treatment. The nitrogen emission in the nitrogen emission model of garbage treatment is:

[0098] GT OUT =GTOUT Lea ;

[0099] Among them, GT OUT Nitrogen emissions from waste treatment, GTOUT Lea After a period of time, landfilled garbage decomposes and releases nitrogen emissions.

[0100] The nitrogen emission system includes the nitrogen emission system of surface water. The nitrogen emission in the nitrogen emission model of surface water is:

[0101] SW OUT =SWOUT Irr +SWOUT Den +SWOUT Exp ;

[0102] Among them, SW OUT is the nitrogen emission to surface water, SWOUT Irr SWOUT is the nitrogen emissions from irrigation to cropland. Den is the nitrogen emission from denitrification in surface water, SWOUT Exp is the nitrogen emission transferred from rivers to the ocean.

[0103] The nitrogen emission system includes the nitrogen emission system of groundwater. The nitrogen emission in the nitrogen emission model of groundwater is:

[0104] GW OUT =0;

[0105] Among them, GW OUT is the nitrogen discharge to groundwater.

[0106] The nitrogen emission system includes the atmospheric nitrogen emission system. The nitrogen emission in the atmospheric nitrogen emission model is:

[0107] AT OUT =ATOUT Dep +ATOUT Exp ;

[0108] Among them, AT OUT is the nitrogen emission to the atmosphere, ATOUT Dep is the nitrogen emission from nitrogen deposition, ATOUT Exp is the nitrogen emission Nr transferred to the surrounding areas through atmospheric circulation.

[0109] According to the statistical system of the second embodiment of the present invention, Figure 4 As shown, the method for analyzing nitrogen metabolism in urban agglomerations disclosed in any of the above embodiments includes: a nitrogen output statistics module 410, which counts the total nitrogen output of each department in each city; an output acquisition module 420, which acquires the total economic output of each department in each city and the total production and investment consumption coefficient matrix; a calculation module 430, which associates the total nitrogen output and the total economic output of each department in each city to obtain a direct nitrogen output coefficient; a first analysis module 440, which associates the direct nitrogen output coefficient with the total production and investment consumption coefficient matrix to obtain a nitrogen output complete consumption matrix; a second analysis module 450, which processes the total nitrogen output of each department in each city based on the nitrogen output complete consumption matrix to obtain a nitrogen output flow matrix, and the nitrogen output flow matrix is ​​used to characterize the nitrogen flow relationship between the various departments in each city; and an output module 460, which outputs and presents the nitrogen output flow matrix.

[0110] The statistical system of the present invention, by executing the urban agglomeration nitrogen metabolism analysis method disclosed in any of the above embodiments, associates nitrogen metabolism with the economic output of each department in the urban agglomeration, and reflects the nitrogen flow relationship between each department, so as to facilitate supervision and management and deepen nitrogen metabolism research.

[0111] According to the control device of the third aspect of the embodiment of the present invention, the control device includes a memory and a processor, the memory stores a computer program, and when the processor executes the computer program, the urban agglomeration nitrogen metabolism analysis method disclosed in any of the above embodiments is implemented.

[0112] The control device can be any intelligent terminal including a central computer, a remote device terminal computer, etc.

[0113] The control device includes a processor and a memory. The processor can be implemented by a general central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits, etc., and is used to execute relevant programs to implement the technical solutions provided in the embodiments of the present application.

[0114] The memory can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory can store an operating system and other application programs. When the technical solution provided in the embodiments of this specification is implemented by software or firmware, the relevant program code is stored in the memory, and the processor is called to execute the urban agglomeration metabolic analysis method of the embodiments of this application.

[0115] According to the computer-readable storage medium of the fourth aspect of the present invention, the computer-readable storage medium stores a computer program, which is characterized in that when the computer program is executed by a processor, the urban agglomeration nitrogen metabolism analysis method disclosed in any of the above embodiments is implemented.

[0116] The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely disposed relative to the processor, and these remote memories may be connected to the processor 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.

[0117] The embodiments described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0118] Those skilled in the art will appreciate that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0119] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0120] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0121] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0122] The preferred embodiments of the present application are described above with reference to the accompanying drawings, but the scope of the rights of the present application is not limited thereto. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present application should be within the scope of the rights of the present application.

[0123] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0124] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for analyzing nitrogen metabolism in an urban agglomeration, which is applied to calculate the nitrogen metabolism flow between multiple departments of at least one city in a region, and is characterized by: The urban agglomeration nitrogen metabolism analysis method comprises: Count the total nitrogen output of each department in each city; Obtain the total economic output of each department in each city and the production and investment complete consumption coefficient matrix, wherein the production and investment complete consumption coefficient matrix is ​​obtained based on the complete consumption coefficient of each department in each city, the complete consumption coefficient is used to characterize the production and investment ratio of the department in the production process, and the production and investment complete consumption coefficient matrix is ​​used to characterize the production and investment relationship between various departments in each city; The total nitrogen export of each sector in each city was related to the total economic output to obtain the direct nitrogen export coefficient; The direct nitrogen output coefficient is associated with the production and input complete consumption coefficient matrix to obtain the nitrogen output complete consumption matrix; The total nitrogen output of each department in each city is processed based on the nitrogen output complete consumption matrix to obtain the nitrogen output flow matrix, which is used to characterize the nitrogen flow relationship between various departments in each city; The nitrogen output flow matrix is ​​exported and presented.

2. The urban agglomeration nitrogen metabolism analysis method according to claim 1, characterized in that: The nitrogen output flow matrix obtained by processing the total nitrogen output of each department in each city based on the nitrogen output complete consumption matrix includes: Using the total nitrogen output of each city by sector Construct the nitrogen output using the final matrix Z, where represents the total nitrogen output of the j department in city s; The nitrogen output flow matrix F is: F=Z×N, where N is the nitrogen output complete consumption matrix.

3. The urban agglomeration nitrogen metabolism analysis method according to claim 2, characterized in that: The method of associating the direct nitrogen output coefficient with the production and investment complete consumption coefficient matrix to obtain the nitrogen output complete consumption matrix includes: Using the total nitrogen export coefficients of each city and each department Construct the nitrogen output complete consumption matrix N, where represents the total nitrogen output coefficient of department j in city s; the total nitrogen output coefficient for: in, represents the direct nitrogen output coefficient of the j department in city s, and B is the matrix of total consumption coefficients of production and investment; in, represents the total nitrogen output of department j in city s, Represents the total economic output of sector j in city s.

4. The urban agglomeration nitrogen metabolism analysis method according to claim 2, characterized in that: Included in the total nitrogen output of each sector in each city are: Calculate the total nitrogen emissions of regional industrial clusters; Obtaining an energy balance sheet for each city, wherein the energy balance sheet is used to characterize energy usage of each department in each city; The total nitrogen emissions and energy balances of regional industrial clusters were analyzed together to obtain comprehensive emission data; The combined emission data were allocated to each sector in each city to form the total nitrogen output of each sector in each city.

5. The urban agglomeration nitrogen metabolism analysis method according to claim 2, characterized in that: The total nitrogen emissions from the industrial clusters in the statistical area include: Divide the industrial clusters in the region into multiple nitrogen emission sub-systems; According to the differences of various nitrogen sub-emission systems, a nitrogen sub-emission model corresponding to each nitrogen sub-emission system is established, wherein the establishment of the nitrogen sub-emission model includes establishing a material flow framework based on the material flow analysis method according to the flow process of the input material in the nitrogen sub-emission system, and analyzing the nitrogen emission of the input material in the material flow framework based on the emission factor method to obtain a relationship model between the input material and the nitrogen emission in the nitrogen sub-emission model; Calculate the nitrogen emission of each nitrogen sub-emission system based on the input substances; The nitrogen emissions of each nitrogen emission sub-system are integrated to obtain the total nitrogen emissions of the regional industrial cluster.

6. The urban agglomeration nitrogen metabolism analysis method according to claim 1, characterized in that: There are multiple cities, and the production-investment complete consumption coefficient matrix is ​​used to characterize the production-investment relationship between different departments in the same city and the production-investment relationship between different departments in different cities.

7. A statistical system for executing the urban agglomeration nitrogen metabolism analysis method according to any one of claims 1 to 6, characterized in that: include: The nitrogen output statistics module counts the total nitrogen output of each department in each city; Output acquisition module, which obtains the total economic output of each department in each city and the complete consumption coefficient matrix of production and investment; A calculation module that relates the total nitrogen output of each sector in each city to the total economic output to derive the direct nitrogen export coefficient; The first analysis module uses the direct nitrogen output coefficient to associate with the production and investment complete consumption coefficient matrix to obtain the nitrogen output complete consumption matrix; The second analysis module processes the total nitrogen output of each department in each city based on the nitrogen output complete consumption matrix to obtain a nitrogen output flow matrix, which is used to characterize the nitrogen flow relationship between various departments in each city; Output module, outputs and presents the nitrogen output flow matrix.

8. A control device, characterized in that: The control device includes a memory and a processor, the memory stores a computer program, and the processor implements the urban agglomeration nitrogen metabolism analysis method according to any one of claims 1 to 6 when executing the computer program.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the urban agglomeration nitrogen metabolism analysis method according to any one of claims 1 to 6 is implemented.

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