Method and system for calculating erosion of soil and water conservation

Abstract

The embodiment of the present application provides a kind of water and soil conservation erosion calculation method and system.By obtaining the topographic condition and average wind speed value of target area;According to the topographic condition and average wind speed value of the target area, determine the wind erosion factor of the target area;According to the wind erosion factor of the target area, soil erosion inducing factor and soil erosion inhibiting factor, estimate the first soil erosion amount of the target area;Using the preset regional correction coefficient, the first soil erosion amount is corrected, and the target soil erosion amount of the target area is obtained.In this way, the consideration of the influence factors such as the topographic condition and average wind speed value of the target area is increased, the soil erosion amount of the target area is comprehensively calculated, so as to improve the prediction accuracy of soil erosion amount.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of ecological environment protection, and relates to an erosion calculation method and system for water and soil conservation. BACKGROUND

[0002] Water and soil loss is very harmful to soil erosion, for example, nitrogen, phosphorus and potassium fertilizers in fertile soil are washed away, causing land fertility to decline, thereby greatly affecting agricultural production activities.

[0003] Therefore, before engaging in agricultural production activities, the water and soil loss of the soil area where agricultural production activities are to be carried out in the future period of time is generally predicted. To predict the water and soil loss, the soil loss amount should be predicted first, and at present, the soil erosion amount is mainly predicted by the universal soil loss equation (USLE). Since the soil erosion amount is affected by many factors, but only the rainfall on the soil erosion is considered in the USLE model, the USLE model cannot objectively predict the soil erosion amount.

[0004] Therefore, the prior art has the problem of poor accuracy in predicting the soil erosion amount. SUMMARY

[0005] The application embodiment provides a soil and water conservation erosion calculation method and system to solve the problem of poor calculation accuracy of the soil erosion.

[0006] In a first aspect, the application embodiment provides a soil and water conservation erosion calculation method, comprising the following steps:

[0007] Obtain the topographic conditions and average wind speed value of a target area;

[0008] Determine the wind erosion factor of the target area according to the topographic conditions and average wind speed value of the target area;

[0009] Estimate the first soil erosion amount of the target area according to the wind erosion factor, soil erosion inducing factor and soil erosion inhibiting factor of the target area;

[0010] Correct the first soil erosion amount by using a preset regional correction coefficient to obtain the target soil erosion amount of the target area.

[0011] Optionally, the determination of the wind erosion factor of the target area according to the topographic conditions and average wind speed value of the target area comprises:

[0012] According to the topography of the target area, a first sub-wind erosion factor a1 is determined, wherein a1=1 when the topography is a plain, a1=1 when the topography is a hilly area, a1=0.5 when the topography is a plateau, and a1=0.3 when the topography is a mountainous area;

[0013] According to the average wind speed value of the target area, a second sub-wind erosion factor a2 is determined, wherein a2=0.1 when the average wind speed value is less than 10 m / s, a2=0.2 when the average wind speed value is between 10 m / s and 20 m / s, a2=0.3 when the average wind speed value is between 20 m / s and 30 m / s, a2=0.4 when the average wind speed value is between 30 m / s and 40 m / s, a2=0.5 when the average wind speed value is between 40 m / s and 50 m / s, a2=0.6 when the average wind speed value is between 50 m / s and 60 m / s, a2=0.7 when the average wind speed value is between 60 m / s and 70 m / s, a2=0.8 when the average wind speed value is between 70 m / s and 80 m / s, a2=0.9 when the average wind speed value is between 80 m / s and 90 m / s, and a2=1 when the average wind speed value is between 90 m / s and 100 m / s;

[0014] The first sub-wind erosion factor a1 and the second sub-wind erosion factor a2 are combined to obtain the wind erosion factor of the target area.

[0015] Optionally, the formula for estimating the first soil erosion amount of the target area according to the wind erosion factor, the soil erosion inducing factor, and the soil erosion inhibiting factor of the target area is as follows:

[0016] SL=W×A×B;

[0017] wherein the SL is the first soil erosion amount, the W is the wind erosion factor, the A is the soil erosion inducing factor, and the B is the soil erosion inhibiting factor.

[0018] Optionally, before estimating the first soil erosion amount of the target area according to the wind erosion factor, the soil erosion inducing factor, and the soil erosion inhibiting factor of the target area, the method further comprises

[0019] obtaining the average rainfall, the soil type, the vegetation coverage, the soil and water conservation measures, the slope length, and the slope gradient of the target area;

[0020] determining the rainfall erosion factor according to the rainfall of the target area;

[0021] calculating the soil erosion inhibiting factor B according to the soil type, the vegetation coverage, and the soil and water conservation measures.

[0022] According to the rainfall erosion factor, the slope length and the slope, the soil erosion inducing factor A is calculated.

[0023] Optionally, the calculation formula of the rainfall erosion factor according to the rainfall of the target area is as follows:

[0024]

[0025] wherein, the R is a monthly rainfall erosion factor, the a = 21 β -7 , the The k is a specific number of days in a month, the p j is the rainfall of the jth day in the month, the pd is the daily average rainfall, and the py is the annual average rainfall.

[0026] Optionally, the calculation formula of the soil erosion inhibiting factor B according to the soil type, the vegetation coverage and the soil and water conservation measures is as follows:

[0027] B = KCP

[0028] wherein, the K is the soil erodibility determined according to the soil type, the C is the plant coverage factor, and the P is the soil and water conservation measure factor determined according to the soil and water conservation measures.

[0029] The calculation formula of the C is as follows:

[0030] The v 1 is the vegetation coverage.

[0031] Optionally, the calculation formula of the soil erosion inducing factor A according to the rainfall erosion factor, the slope length and the slope is as follows:

[0032] A = LSR

[0033] wherein, the L is the slope length, the S is the slope, and the R is the rainfall erosion factor.

[0034] In a second aspect, an embodiment of the present application provides an erosion calculation system for soil and water conservation, which comprises:

[0035] A first acquisition module is configured to acquire the topographic conditions and the average wind speed value of a target area.

[0036] A first determination module is configured to determine a wind erosion factor of the target area according to the topographic conditions and the average wind speed value of the target area.

[0037] a first estimation module, configured to estimate a first soil erosion amount of the target region according to a wind erosion factor, a soil erosion inducing factor and a soil erosion inhibiting factor of the target region;

[0038] a first obtaining module, configured to correct the first soil erosion amount by using a preset regional correction coefficient to obtain a target soil erosion amount of the target region.

[0039] Optionally, the first determining module comprises:

[0040] a first determining sub-module, configured to determine a first sub-wind erosion factor a1 according to a topographic condition of the target region, wherein a1=1 when the topographic condition is a plain, a1=1 when the topographic condition is a hilly area, a1=0.5 when the topographic condition is a plateau, and a1=0.3 when the topographic condition is a mountainous area;

[0041] a second determining sub-module, configured to determine a second sub-wind erosion factor a2 according to an average wind speed value of the target region, wherein a2=0.1 when the average wind speed value is less than 10 m / s, a2=0.2 when the average wind speed value is between 10 m / s and 20 m / s, a2=0.3 when the average wind speed value is between 20 m / s and 30 m / s, a2=0.4 when the average wind speed value is between 30 m / s and 40 m / s, a2=0.5 when the average wind speed value is between 40 m / s and 50 m / s, a2=0.6 when the average wind speed value is between 50 m / s and 60 m / s, a2=0.7 when the average wind speed value is between 60 m / s and 70 m / s, a2=0.8 when the average wind speed value is between 70 m / s and 80 m / s, a2=0.9 when the average wind speed value is between 80 m / s and 90 m / s, and a2=1 when the average wind speed value is between 90 m / s and 100 m / s;

[0042] an obtaining sub-module, configured to obtain the wind erosion factor of the target region by merging the first sub-wind erosion factor a1 and the second sub-wind erosion factor a2.

[0043] Optionally, the soil and water conservation erosion calculation system further comprises:

[0044] a second obtaining module, configured to obtain an average rainfall amount, a soil type, a vegetation coverage, a soil and water conservation measure, a slope length and a slope gradient of the target region;

[0045] a second determining module, configured to determine the rainfall erosion factor according to the rainfall amount of the target region;

[0046] The first calculation module is configured to calculate the soil erosion inhibition factor B according to the soil type, vegetation coverage and soil and water conservation measures;

[0047] The second calculation module is configured to calculate the soil erosion inducing factor A according to the rainfall erosion factor, the slope length and the slope.

[0048] In a third aspect, an embodiment of the present application further provides an electronic device, including a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the steps in the method of the first aspect when executing the computer program.

[0049] In a fourth aspect, an embodiment of the present application further provides a computer readable storage medium, and the computer readable storage medium stores a computer program, and the computer program is executable on a processor to implement the steps in the method of the first aspect.

[0050] In the embodiment of the present application, the topographic condition and the average wind speed value of the target region are acquired, the wind erosion factor of the target region is determined according to the topographic condition and the average wind speed value of the target region, the first soil erosion amount of the target region is estimated according to the wind erosion factor, the soil erosion inducing factor and the soil erosion inhibition factor of the target region, and the target soil erosion amount of the target region is obtained by correcting the first soil erosion amount by using a preset regional correction coefficient. In this way, the topographic condition and the average wind speed value of the target region are considered, the soil erosion amount of the target region is calculated comprehensively, and the prediction accuracy of the soil erosion amount is improved. BRIEF DESCRIPTION OF DRAWINGS

[0051] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0052] Figure 1 A flowchart of an erosion calculation method for soil and water conservation in an embodiment of the present application;

[0053] Figure 2 A structural diagram of an erosion calculation system for soil and water conservation in an embodiment of the present application;

[0054] Figure 3 A structural diagram of an electronic device in an embodiment of the present application. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0056] As shown in the method for sharing information based on the Internet of Things provided by the embodiments of the present application, the method comprises the following steps: Figure 1

[0057] In a first aspect, the embodiments of the present application provide a method for calculating erosion of water and soil conservation, comprising the following steps:

[0058] In step 101, the topographic conditions and average wind speed value of a target region are obtained.

[0059] In step 102, a wind erosion factor of the target region is determined according to the topographic conditions and average wind speed value of the target region.

[0060] In step 103, a first soil erosion amount of the target region is estimated according to the wind erosion factor, soil erosion inducing factor and soil erosion inhibiting factor of the target region.

[0061] In step 104, the first soil erosion amount is corrected by using a preset regional correction coefficient to obtain a target soil erosion amount of the target region.

[0062] It should be understood that the preset regional correction coefficient can be set according to experience. Further, the preset regional correction coefficient has a value range of 0.5-1.

[0063] Optionally, the determination of the wind erosion factor of the target region according to the topographic conditions and average wind speed value of the target region comprises:

[0064] According to the topographic conditions of the target region, a first sub-wind erosion factor a1 is determined, wherein a1=1 when the topographic conditions are plains, a1=1 when the topographic conditions are hills, a1=0.5 when the topographic conditions are plateaus, and a1=0.3 when the topographic conditions are mountains.

[0065] ​According to the average wind speed value of the target region, a second sub-wind erosion factor a2 is determined, a2=0.1 when the average wind speed value is less than 10 m / s, a2=0.2 when the average wind speed value is between 10 m / s and 20 m / s, a2=0.3 when the average wind speed value is between 20 m / s and 30 m / s, a2=0.4 when the average wind speed value is between 30 m / s and 40 m / s, a2=0.5 when the average wind speed value is between 40 m / s and 50 m / s, a2=0.6 when the average wind speed value is between 50 m / s and 60 m / s, a2=0.7 when the average wind speed value is between 60 m / s and 70 m / s, a2=0.8 when the average wind speed value is between 70 m / s and 80 m / s, a2=0.9 when the average wind speed value is between 80 m / s and 90 m / s, and a2=1 when the average wind speed value is between 90 m / s and 100 m / s.

[0066] The first sub-wind erosion factor a1 and the second sub-wind erosion factor a2 are combined to obtain the wind erosion factor of the target region.

[0067] In the embodiment of the present application, the topography and the average wind speed value of the target region are obtained, the wind erosion factor of the target region is determined according to the topography and the average wind speed value of the target region, the first soil erosion amount of the target region is estimated according to the wind erosion factor, the soil erosion inducing factor and the soil erosion inhibiting factor of the target region, and the target soil erosion amount of the target region is obtained by correcting the first soil erosion amount by using a preset regional correction coefficient. In this way, the topography and the average wind speed value of the target region are considered as influencing factors, and the soil erosion amount of the target region is calculated comprehensively, so that the prediction accuracy of the soil erosion amount is improved.

[0068] Optionally, the formula for estimating the first soil erosion amount of the target region according to the wind erosion factor, the soil erosion inducing factor and the soil erosion inhibiting factor of the target region is as follows:

[0069] SL=W×A×B;

[0070] wherein the SL is the first soil erosion amount, the W is the wind erosion factor, the A is the soil erosion inducing factor, and the B is the soil erosion inhibiting factor.

[0071] Optionally, before estimating the first soil erosion amount of the target region according to the wind erosion factor, the soil erosion inducing factor and the soil erosion inhibiting factor of the target region, the method further comprises

[0072] obtaining average rainfall, soil type, vegetation coverage, soil and water conservation measures, slope length and slope of the target area;

[0073] determining the rainfall erosion factor according to the rainfall of the target area;

[0074] calculating the soil erosion inhibition factor B according to the soil type, vegetation coverage and soil and water conservation measures;

[0075] calculating the soil erosion inducing factor A according to the rainfall erosion factor, the slope length and the slope.

[0076] Optionally, the calculation formula for determining the rainfall erosion factor according to the rainfall of the target area is as follows:

[0077]

[0078] wherein, the R is a monthly rainfall erosion factor, the a = 21 β -7 , the the k is the specific number of days in a month, the p j is the rainfall on the jth day in the month, the pd is the daily average rainfall, and the py is the annual average rainfall.

[0079] Optionally, the calculation formula for calculating the soil erosion inhibition factor B according to the soil type, vegetation coverage and soil and water conservation measures is as follows:

[0080] B = KCP

[0081] wherein, the K is soil erodibility determined according to the soil type, the C is a plant coverage factor, and the P is a soil and water conservation measure factor determined according to the soil and water conservation measures;

[0082] The calculation formula of the C is as follows:

[0083] the v 1 is the vegetation coverage.

[0084] Optionally, the calculation formula for calculating the soil erosion inducing factor A according to the rainfall erosion factor, the slope length and the slope is as follows:

[0085] A = LSR

[0086] wherein, the L is the slope length, the S is the slope, and the R is the rainfall erosion factor.

[0087] In a second aspect, an embodiment of the present application provides an erosion calculation system 200 for soil and water conservation, which comprises:

[0088] The first acquisition module 201 is configured to acquire a topographic condition and an average wind speed value of a target region.

[0089] The first determination module 202 is configured to determine a wind erosion factor of the target region according to the topographic condition and the average wind speed value of the target region.

[0090] The first estimation module 203 is configured to estimate a first soil erosion amount of the target region according to the wind erosion factor, a soil erosion inducing factor and a soil erosion inhibiting factor of the target region.

[0091] The first obtaining module 204 is configured to correct the first soil erosion amount by using a preset regional correction coefficient to obtain a target soil erosion amount of the target region.

[0092] Optionally, the first determination module comprises:

[0093] The first determination sub-module is configured to determine a first sub-wind erosion factor a1 according to the topographic condition of the target region, wherein a1 = 1 when the topographic condition is a plain, a1 = 1 when the topographic condition is a hilly area, a1 = 0.5 when the topographic condition is a plateau, and a1 = 0.3 when the topographic condition is a mountainous area.

[0094] The second determination sub-module is configured to determine a second sub-wind erosion factor a2 according to the average wind speed value of the target region, wherein a2 = 0.1 when the average wind speed value is less than 10 m / s, a2 = 0.2 when the average wind speed value is between 10 m / s and 20 m / s, a2 = 0.3 when the average wind speed value is between 20 m / s and 30 m / s, a2 = 0.4 when the average wind speed value is between 30 m / s and 40 m / s, a2 = 0.5 when the average wind speed value is between 40 m / s and 50 m / s, a2 = 0.6 when the average wind speed value is between 50 m / s and 60 m / s, a2 = 0.7 when the average wind speed value is between 60 m / s and 70 m / s, a2 = 0.8 when the average wind speed value is between 70 m / s and 80 m / s, a2 = 0.9 when the average wind speed value is between 80 m / s and 90 m / s, and a2 = 1 when the average wind speed value is between 90 m / s and 100 m / s.

[0095] The obtaining sub-module is configured to combine and calculate the first sub-wind erosion factor a1 and the second sub-wind erosion factor a2 to obtain the wind erosion factor of the target region.

[0096] Optionally, the soil and water conservation erosion calculation system further comprises:

[0097] The second acquisition module is used to acquire the average rainfall, soil type, vegetation coverage, soil and water conservation measures, slope length and slope of the target area;

[0098] The second determining module is used to determine the rainfall erosion factor based on the rainfall in the target area;

[0099] The first calculation module is used to calculate the soil erosion inhibition factor B based on the soil type, vegetation coverage, and soil and water conservation measures.

[0100] The second calculation module is used to calculate the soil erosion inducing factor A based on the rainfall erosion factor, the slope length, and the slope gradient.

[0101] The soil and water conservation erosion calculation system 200 described herein can achieve the following in the embodiments of this application. Figure 1 The various processes in the method embodiments, and the ways to achieve the same beneficial effects, will not be repeated here to avoid repetition.

[0102] Thirdly, embodiments of the present invention also provide an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps in the method of the first aspect as described above.

[0103] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the method of the first aspect as described above.

[0104] This application also provides an electronic device. Please refer to [link to relevant documentation]. Figure 3 The electronic device may include a processor 301, a memory 302, and a program 3021 stored in the memory 302 and capable of running on the processor 301.

[0105] When program 3021 is executed by processor 301, it can achieve the following: Figure 1 Any steps in the corresponding method embodiments and the achievement of the same beneficial effects will not be repeated here.

[0106] Those skilled in the art will understand that all or part of the steps of the methods described in the above embodiments can be implemented by hardware related to program instructions, and the program can be stored in a readable medium.

[0107] This application embodiment also provides a readable storage medium storing a computer program, which, when executed by a processor, can perform the above-described functions. Figure 1 Any step in the corresponding method embodiment can achieve the same technical effect, and will not be repeated here to avoid repetition.

[0108] The above describes the preferred embodiments of the present application. It should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A method of calculating an erosion of soil and water conservation, characterized by, The method comprises: S101, acquiring a topographic condition and an average wind speed value of a target region; S102, determining a wind erosion factor of the target region according to the topographic condition and the average wind speed value of the target region; determining a first sub-wind erosion factor a1 according to the topographic condition of the target region, and determining a second sub-wind erosion factor a2 according to the average wind speed value of the target region; and combining and calculating the first sub-wind erosion factor a1 and the second sub-wind erosion factor a2 to obtain the wind erosion factor W of the target region; S103, estimating a first soil erosion amount of the target region according to the wind erosion factor, a soil erosion inducing factor A and a soil erosion inhibiting factor B of the target region; wherein a formula of the first soil erosion amount SL is as follows: SL = W × A × B; Before estimating the first soil erosion amount of the target region according to the wind erosion factor, the soil erosion inducing factor and the soil erosion inhibiting factor of the target region, the method further comprises acquiring an average rainfall, a soil type, a vegetation coverage, a soil and water conservation measure, a slope length and a slope grade of the target region; determining a rainfall erosion factor according to the rainfall of the target region; calculating the soil erosion inhibiting factor B according to the soil type, the vegetation coverage and the soil and water conservation measure; calculating the soil erosion inducing factor A according to the rainfall erosion factor, the slope length and the slope grade; a calculation formula of the rainfall erosion factor according to the rainfall of the target region is as follows: ； Wherein, the R is a monthly rainfall erosion factor, the , the , the k is the specific number of days in this month, the is the rainfall of the jth day in this month, the is the daily average rainfall, the is the annual average rainfall; a calculation formula of the soil erosion inhibiting factor B according to the soil type, the vegetation coverage and the soil and water conservation measure is as follows: B = KCP wherein, the K is a soil erodibility determined according to the soil type, the C is a plant coverage factor, and the P is a soil and water conservation measure factor determined according to the soil and water conservation measure; a calculation formula of the C is as follows: , said is the vegetation cover; a calculation formula of the soil erosion inducing factor A according to the rainfall erosion factor, the slope length and the slope grade is as follows: A = LSR wherein, the L is the slope length, and the S is the slope grade; S104, correcting the first soil erosion amount by using a preset regional correction coefficient to obtain a target soil erosion amount of the target region.

2. The water and soil conservation erosion calculation method according to claim 1, characterized by, The method of determining the wind erosion factor of the target region according to the topographic condition and the average wind speed value of the target region comprises: when the topographic condition is a plain, a1 = 1; when the topographic condition is a hilly area, a1 = 1; when the topographic condition is a plateau, a1 = 0.5; and when the topographic condition is a mountainous area, a1 = 0.

3. a2 = 0.1 when the average wind speed value is less than 10 m / s, a2 = 0.2 when the average wind speed value is between 10 m / s and 20 m / s, a2 = 0.3 when the average wind speed value is between 20 m / s and 30 m / s, a2 = 0.4 when the average wind speed value is between 30 m / s and 40 m / s, a2 = 0.5 when the average wind speed value is between 40 m / s and 50 m / s, a2 = 0.6 when the average wind speed value is between 50 m / s and 60 m / s, a2 = 0.7 when the average wind speed value is between 60 m / s and 70 m / s, a2 = 0.8 when the average wind speed value is between 70 m / s and 80 m / s, a2 = 0.9 when the average wind speed value is between 80 m / s and 90 m / s, and a2 = 1 when the average wind speed value is between 90 m / s and 100 m / s.

3. A water and soil conservation erosion calculation system, which implements the method according to claim 1, characterized by, The system comprises: a first acquisition module configured to acquire a topographic condition and an average wind speed value of a target region; a first determination module configured to determine a wind erosion factor of the target region according to the topographic condition and the average wind speed value of the target region; a first estimation module configured to estimate a first soil erosion amount of the target region according to the wind erosion factor, a soil erosion inducing factor and a soil erosion inhibiting factor of the target region; a first obtaining module configured to correct the first soil erosion amount by using a preset regional correction coefficient to obtain a target soil erosion amount of the target region.

4. The water and soil conservation erosion calculation system according to claim 3, wherein The first determination module comprises: a first determination submodule configured to determine a first sub-wind erosion factor a1 according to the topographic condition of the target region, wherein a1 = 1 when the topographic condition is a plain, a1 = 1 when the topographic condition is a hilly area, a1 = 0.5 when the topographic condition is a plateau, and a1 = 0.3 when the topographic condition is a mountainous area; a second determination submodule configured to determine a second sub-wind erosion factor a2 according to the average wind speed value of the target region, wherein a2 = 0.1 when the average wind speed value is less than 10 m / s, a2 = 0.2 when the average wind speed value is between 10 m / s and 20 m / s, a2 = 0.3 when the average wind speed value is between 20 m / s and 30 m / s, a2 = 0.4 when the average wind speed value is between 30 m / s and 40 m / s, a2 = 0.5 when the average wind speed value is between 40 m / s and 50 m / s, a2 = 0.6 when the average wind speed value is between 50 m / s and 60 m / s, a2 = 0.7 when the average wind speed value is between 60 m / s and 70 m / s, a2 = 0.8 when the average wind speed value is between 70 m / s and 80 m / s, a2 = 0.9 when the average wind speed value is between 80 m / s and 90 m / s, and a2 = 1 when the average wind speed value is between 90 m / s and 100 m / s. A sub-module is obtained for merging the first sub-wind erosion factor a1 and the second sub-wind erosion factor a2 to obtain the wind erosion factor of the target region.

5. An electronic device, comprising: The device comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; The memory is used for storing a computer program; The processor is used for executing the program stored on the memory to realize the steps in the method according to any one of claims 1 to 2.

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