Method for evaluating contribution of floating population to atmospheric environmental health assessment

Abstract

The present application relates to the technical field of environmental health assessment, and particularly relates to a method for evaluating the contribution of floating population to atmospheric environmental health assessment. The method comprises: S1, quantifying the contribution of floating population to pollution exposure concentration; S2, quantifying the contribution of floating population to pollution exposure concentration change in different years. For a given city, the contribution of floating population to pollution exposure concentration can be quantified after calculating the pollution exposure concentration in a given year by using the data of permanent population and air pollution concentration. For a given city, the contribution of floating population to pollution exposure concentration change can be quantified after calculating the pollution exposure concentration change in different years.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of environmental health assessment, and particularly relates to a method for evaluating the contribution of floating population to atmospheric environmental health assessment. BACKGROUND

[0002] Atmospheric environmental assessment not only considers the influence of air pollution concentration, but also considers the influence of population factor. Specifically, in the process of air quality assessment, pollution exposure concentration is generally based on permanent population and air pollution concentration, and the permanent population is the sum of registered population and floating population. Under the background of obvious population flow trend and large scale of floating population, it is necessary to quantify the contribution of floating population to pollution exposure concentration, so as to promote accurate understanding of air quality assessment results and provide scientific reference for air quality management. SUMMARY

[0003] The present application aims to provide a method for evaluating the contribution of floating population to atmospheric environmental health assessment. The present application quantifies the contribution of floating population to atmospheric pollution exposure concentration by constructing a related evaluation method.

[0004] In order to achieve the above-mentioned application purpose, the technical scheme adopted by the present application is as follows:

[0005] A method for evaluating the contribution of floating population to atmospheric environmental health assessment, the method comprising:

[0006] S1, quantifying the contribution of floating population to pollution exposure concentration;

[0007] For a given city, the pollution exposure concentration of the city in a given year is calculated by using the permanent population and air pollution data of the districts and counties under the city, and the specific calculation formula is as follows:

[0008] (1)

[0009] Wherein, PWM C is the pollution exposure concentration of the given city, which is based on the permanent population POP C,i of the districts and counties under the city and the annual average concentration PM i of air pollution of the districts and counties, i represents the districts and counties under the city;

[0010] S2, quantifying the contribution of floating population to the change of pollution exposure concentration in different years;

[0011] For a given city, the pollution exposure concentration of the base year is PWM C,B , wherein C represents that the pollution exposure concentration is based on permanent population, B represents the base year, and for the year R, the relative change of pollution exposure concentration compared with the base year B is:

[0012] (2)

[0013] where, ΔPWM C is the relative change of pollution exposure concentration in R years and the base year B, the pollution exposure concentration in the base year B PWM C,B and the pollution exposure concentration in R years PWM C,B The calculation can be referred to formula (1), formula (2) can be further derived as follows:

[0014] (3)

[0015] where, POP T, C,B is the total resident population of the city in the base year B, POP T, C,R is the total resident population of the city in the base year R, usually the total resident population changes little, therefore, the ratio of POP T, C,B and POP T, C,R is approximately 1.

[0016] Preferably, the method S1, considering that the resident population is the sum of the registered population and the net migration population, therefore formula (1) can be transformed as:

[0017] (4)

[0018] where, POP H,i is the registered population corresponding to the district i, POP M,i is the net migration population corresponding to the district i, formula (2) can be further derived as follows:

[0019] (5)

[0020] where, POP T, C , POP T, H and POP T, M are the total resident population, the total registered population and the total net migration population of the given city, PWM H is the pollution exposure concentration based on the registered population of the given city, PWM M is the pollution exposure concentration based on the net migration population of the given city, PWM C is the average pollution exposure concentration of the resident population, PWM H is the average pollution exposure concentration of the registered population, PWM M is the average pollution exposure concentration of the migration population, formula (5) is that the total pollution exposure of the resident population is the sum of the total pollution exposure of the registered population and the total pollution exposure of the net migration population;

[0021] For the pollution exposure concentration based on the resident population PWM C of the given city, the contribution M1 of the migration population to the pollution exposure concentration PWM C is:

[0022] (6).

[0023] Preferably, the S2 can be expanded as:

[0024] (7)

[0025] Wherein, ΔPOP C,i is the resident population of district i, and ΔPM i is the change of the annual average air pollution concentration of district i, formula (7) is brought into formula (2), and the following relationship can be obtained:

[0026] (8)

[0027] Wherein, the influence of the air pollution concentration on the change of the pollution exposure concentration is , the influence of the resident population on the change of the pollution exposure concentration is , and the coupling influence of the resident population change and the pollution exposure concentration change is

[0028] Considering that the resident population change is the sum of the registered population change and the floating population change, the contribution M2 of the floating population to the pollution exposure concentration change in different years is:

[0029] (9)

[0030] Wherein ΔPOP H,i is the change of the registered population of district i.

[0031] Compared with the prior art, the present application has the following beneficial effects:

[0032] 1. The present application can quantify the contribution of the floating population to the pollution exposure concentration for a given city by using the resident population and air pollution concentration data to calculate the pollution exposure concentration in a given year.

[0033] 2. The contribution of the floating population to the change of the pollution exposure concentration can be quantified for a given city by calculating the change of the pollution exposure concentration in different years. DETAILED DESCRIPTION

[0034] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be practiced without other than the details described herein, and similar modifications and changes can be made by those skilled in the art without departing from the scope of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0035] The present application aims to provide a method for evaluating the contribution of floating population to atmospheric environmental health assessment.

[0036] In order to achieve the above-mentioned object of the application, the technical scheme is specifically as follows:

[0037] An evaluation method for contribution of floating population to atmospheric environmental health evaluation, characterized in that the method comprises:

[0038] S1, quantifying the contribution of floating population to pollution exposure concentration;

[0039] For a given city, the pollution exposure concentration of the city in a given year is calculated by using the permanent population of the districts and counties under the city and the air pollution data, and the specific calculation formula is as follows:

[0040] (1)

[0041] Wherein, PWM C is the pollution exposure concentration of the given city, which is based on the permanent population POP C,i of the districts and counties under the city and the annual average concentration PM i of air pollution of the districts and counties, i represents the districts and counties under the city;

[0042] S2, quantifying the contribution of floating population to the change of pollution exposure concentration in different years;

[0043] For a given city, the pollution exposure concentration of the benchmark year is PWM C,B , wherein C represents that the pollution exposure concentration is based on the permanent population, B represents the benchmark year, and for the year R, the relative change of the pollution exposure concentration compared with the benchmark year B is:

[0044] (2)

[0045] Wherein, ΔPWM C is the relative change of the pollution exposure concentration in the R year and the benchmark year B, the pollution exposure concentration PWM C,B of the benchmark year B and the pollution exposure concentration PWM C,B of the R year are calculated according to formula (1), and formula (2) can be further derived as:

[0046] (3)

[0047] Wherein, POP T, C,B is the total permanent population of the city in the benchmark year B, POP T, C,R is the total permanent population of the city in the benchmark year R, and the total permanent population usually changes little, so the ratio of POP T, C,B to POP T, C,R is approximately 1.

[0048] Preferably, the method S1 considers that the resident population is the sum of the registered population and the net migration population, and thus formula (1) can be transformed into:

[0049] (4)

[0050] wherein POP H,i is the registered population corresponding to the district i, POP M,i is the net migration population corresponding to the district i, and formula (2) can be further deduced into the following formula:

[0051] (5)

[0052] wherein POP T, C , POP T, H and POP T, M are the total resident population, the total registered population and the total net migration population of the given city, PWM H is the pollution exposure concentration of the given city based on the registered population, PWM M is the pollution exposure concentration of the given city based on the net migration population, PWM C is the average pollution exposure concentration of the resident population, PWM H is the average pollution exposure concentration of the registered population, and PWM M is the average pollution exposure concentration of the migration population, and formula (5) is that the total pollution exposure of the resident population is the sum of the total pollution exposure of the registered population and the total pollution exposure of the net migration population.

[0053] For the pollution exposure concentration PWM C of the given city based on the resident population, the contribution M1 of the migration population to the pollution exposure concentration PWM C is:

[0054] (6).

[0055] Preferably, the S2 can be expanded into:

[0056] (7)

[0057] wherein ΔPOP C,i is the resident population of the district i, and ΔPM i is the change of the annual average air pollution concentration of the district i. By introducing formula (7) into formula (2), the following relationship can be obtained:

[0058] (8)

[0059] wherein the influence of the air pollution concentration on the change of the pollution exposure concentration is , the influence of the resident population on the change of the pollution exposure concentration is ;

[0060] Considering that the change of the resident population is the sum of the change of the registered population and the change of the floating population, the contribution M2 of the floating population to the change of the pollution exposure concentration in different years is:

[0061] (9)

[0062] where ΔPOP H,i The change of the registered population in district i.

[0063] Although the present application has been described with reference to the embodiments above, it is possible to make various modifications thereto without departing from the scope of the present application, and equivalent substitutions of components thereof can be made. In particular, the features of the embodiments disclosed in the present specification can be used in combination with each other as long as there is no structural conflict, and the fact that combinations thereof are not exhaustively described in the present specification is merely for the sake of omitting the description and saving resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A method for evaluating the contribution of floating population to the atmospheric environmental health assessment, characterized in that, The method comprises: S1, quantifying the contribution of floating population to pollution exposure concentration; For a given city, the pollution exposure concentration of the city in a given year is calculated using the data of the permanent population and air pollution of the districts and counties under the city, and the specific calculation formula is as follows: （1） wherein PWM C is the average pollution exposure concentration for the permanent population, which is based on the permanent population POP C,i of the districts and counties under the city i and the annual average concentration PM i of air pollution of the districts and counties, i indicating the districts and counties under the city; S2, quantifying the contribution of floating population to the change of pollution exposure concentration in different years; For a given city, the pollution exposure concentration for the base year is PWM C,B where C represents that the pollution exposure concentration is based on the resident population, B indicates the base year, and for a year R, the relative change in pollution exposure concentration compared to the base year B is: （2） where ΔPWM C is the relative change in pollution exposure concentration at R years and the base year B, the pollution exposure concentration PWM C,B at the base year B, and the pollution exposure concentration PWM C,R at R years. The calculation is given by equation (1), and equation (2) is derived further: （3） where POP T, C,B is the total resident population of the city in the base year B, POP T, C,R is the total resident population of the city in the base year R, POP T, C,B and the ratio of POP T, C,R is approximately 1. The S1 considers that the permanent population is the sum of the registered population and the net floating population, so the formula (1) is transformed as: （4） Where, POP H,i is the registered population of district i, POP M,i is the net migration population of district i, and equation (4) is further derived as follows: （5） where POP T, C , POP T, H and POP T, M are the total resident population, total registered population and total net migration population of a given city, PWM C is the average pollution exposure concentration of the resident population, PWM H is the average pollution exposure concentration of the registered population, and PWM M is the average pollution exposure concentration of the floating population, and equation (5) is the total pollution exposure of the resident population as the sum of the total pollution exposure of the registered population and the total pollution exposure of the net migration population. Pollution exposure concentration PWM based on resident population for a given city C The contribution M1 of the floating population to the pollution exposure concentration PWM C is: （6）； S2 Unfolding is: ； (7)； where ΔPM i For the change of annual average air pollution concentration in district i, formula (7) is brought into formula (2), and the following relationship is obtained: (8) Wherein, the influence of air pollution concentration on pollution exposure concentration change is , the influence of permanent population on pollution exposure concentration change is, and the coupling influence of permanent population change and pollution exposure concentration change is ; Considering that the change of permanent population is the sum of the change of registered population and the change of floating population, the contribution M2 of floating population to the change of pollution exposure concentration in different years is: （9） where ΔPOP H,i Changes in county i's registered population.

Images