Agricultural carbon sink algorithm for one planting season of sugar cane

Abstract

The invention relates to the technical field of agricultural carbon sequestration algorithms, and provides an agricultural carbon sequestration algorithm for one planting season of sugar cane, which comprises a production stage carbon sequestration algorithm and a product processing residual carbon sequestration algorithm for sugar cane, the production stage carbon sequestration algorithm comprises a cane stem and leaf carbon sequestration algorithm, the algorithm is Cs = Cgj + Cgy, Cs is sugar cane growth stage carbon sequestration, Cgj is a carbon sequestration value, and Cgy is a carbon sequestration value. Cgj is sugarcane stem carbon sink, and Cgy is sugarcane leaf carbon sink; the product processing residual carbon sequestration algorithm comprises cane sugar, bagasse, filter mud and orange water carbon sequestration algorithms, and the algorithms are as follows: Cj = Cgt + Cgz + Cln + Cjs + Cqt, in the formula, Cj is the product residual carbon sequestration after sugar cane processing, Cgt is cane sugar carbon sequestration, Cgz is bagasse sequestration, Cln is filter mud carbon sequestration, and Cjs is orange water carbon sequestration. According to the method, carbon sequestration is calculated through the production stage and the product processing stage of the sugar cane in one planting season, compared with a macroscopic meteorological observation or acre yield estimation mode, the carbon sequestration capacity of the sugar cane in each stage in the whole life cycle is more accurately measured and calculated, and accurate measurement and calculation of the agricultural carbon sequestration total amount of the sugar cane in one planting season are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural carbon sink algorithms, and in particular to an agricultural carbon sink algorithm for a sugar cane planting season. Background Art

[0002] In the process of achieving carbon peak and carbon neutrality, carbon emission rights trading is a key path that cannot be ignored and deserves attention. Incorporating agriculture into the carbon trading market is a general trend. It is also an important means to encourage the development of rural renewable resources, promote the resource utilization of agricultural and rural waste, and promote high-quality, green and low-carbon development of agriculture and rural areas.

[0003] Sugarcane is an important agricultural crop, among which sugarcane is an important raw material crop for edible sugar. The accurate calculation method of its carbon sink is a prerequisite for the inclusion of agriculture in the carbon trading market. However, the market currently lacks an algorithm that can accurately calculate the agricultural carbon sink of sugarcane in a planting season. The only way to calculate the agricultural carbon sink of sugarcane in a planting season is through estimation, and the calculation accuracy is far from enough.

[0004] Therefore, we made improvements to this and proposed an agricultural carbon sink algorithm for one sugarcane planting season. Summary of the invention

[0005] (I) The technical problem to be solved by the present invention is to improve the accuracy of the agricultural carbon sink algorithm of sugar cane in one planting season, so that the total agricultural carbon sink calculation of sugar cane in one planting season is more accurate.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned invention object, the present invention provides an agricultural carbon sink algorithm for a sugar cane planting season, including sugar cane: carbon sink in the production stage and residual carbon sink in product processing, which are as follows:

[0008] (1) The carbon sink algorithm in the sugar cane production stage includes the carbon sink algorithm for sugar cane stems and sugar cane leaves, and the algorithm is as follows:

[0009] C s =C gj +C gy

[0010] In the formula, C s Sugar cane acts as a growth carbon sink;

[0011] C gj It is a carbon sink for sugarcane stems;

[0012] C gy It is a carbon sink for sugarcane leaves;

[0013] Preferably, the carbon sequestration algorithm during the sugarcane stem growth stage is:

[0014]

[0015] Where M i,j is the average yield per unit area of ​​sugarcane stalk in the region;

[0016] S i,j is the regional planting area;

[0017] C j,ar The average carbon content of sugarcane stems in the region.

[0018] Preferably, the carbon sink algorithm during the sugar cane leaf growth stage is:

[0019]

[0020] Where M i,y is the average yield of sugarcane leaf per unit area of ​​regional planting area;

[0021] S i,y is the regional planting area;

[0022] C y,ar It is the average basal carbon content of sugarcane leaves in the region.

[0023] (2) The residual carbon sink algorithm for product processing includes the carbon sink algorithm for sucrose, bagasse, filter mud, and orange juice, and the algorithm is as follows:

[0024] C j =C gt +C gz +C ln +C js

[0025] In the formula, C j It is the remaining carbon sink of the product after product processing;

[0026] C gt It is a carbon sink for sucrose;

[0027] C gz It is a carbon sink for bagasse;

[0028] C ln To consider peat sink;

[0029] C js It is the carbon sink of orange water.

[0030] Preferably, the carbon sink algorithm of sucrose is:

[0031]

[0032] In the formula, Q i,gj I is the total amount of sugarcane stems entering the sugar mills in the region; i is the sugar yield rate of regional sugar cane.

[0033] Preferably, the carbon sink algorithm of bagasse is:

[0034]

[0035] In the formula, Q i,gj B is the total amount of sugarcane stems entering the sugar mill in the region; i,j is the regional bagasse remaining packaging rate;

[0036] C gz,ar Average as-received carbon content of bagasse for the region.

[0037] Preferably, the carbon sink algorithm of the filter mud is:

[0038]

[0039] In the formula, Q i,gj is the total amount of sugarcane stems entering the sugar mills in the region;

[0040] L i is the regional filter mud yield, i.e. the proportion of filter mud to the processed sugarcane stalks;

[0041] C lv,ar is the average received carbon content of regional filter mud.

[0042] Preferably, the carbon sink algorithm of the orange juice is:

[0043]

[0044] In the formula, Q i,gj is the total amount of sugarcane stems entering the sugar mills in the region;

[0045] J i is the regional citrus juice yield, that is, the proportion of citrus juice to the processed sugarcane stems;

[0046] C js,ar is the average received carbon content of regional filter mud.

[0047] (III) Beneficial effects

[0048] The agricultural carbon sink algorithm for a sugar cane planting season provided by the present invention has the following beneficial effects:

[0049] Carbon sinks are calculated separately in the production stage and product processing stage of a sugar cane planting season. The crop production stage includes carbon sinks in sugarcane stems and leaves; the residual carbon sinks in product processing include carbon sinks in bagasse, sucrose, filter mud and orange juice. Compared with macro-meteorological observations or per-acre yield estimates, the carbon sink capacity of sugar cane at each stage in its entire life cycle can be more accurately calculated, thereby achieving accurate calculation of the total agricultural carbon sink of sugar cane in a planting season. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a structural diagram of the sugarcane production and processing process of the present invention;

[0051] In the figure, 1-sugarcane leaves, 2-sugarcane stems, 3-sucrose, 4-sugarcane bagasse, 5-filter mud, 6-orange juice.

[0052] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0053] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples of the specification. The following examples are only used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0054] Example 1

[0055] This embodiment proposes an agricultural carbon sink algorithm for a sugar cane planting season, including: a carbon sink algorithm for the sugar cane production stage and a residual carbon sink algorithm for sugar cane product processing. The algorithm is as follows:

[0056] (1) The carbon sink algorithm for the sugar cane production stage, as shown in the figure, includes the carbon sink algorithm for sugar cane stems and sugar cane leaves, and the algorithm is as follows:

[0057] C s =C gj +C gy (1)

[0058] In the formula, C s Sugar cane acts as a growth carbon sink;

[0059] C gj is the total carbon sink of sugarcane stems;

[0060] C gy is the total carbon sink of sugarcane leaves;

[0061] The main components of sugar cane are sugarcane roots, sugarcane stems and sugarcane leaves. Most of the sugarcane roots are perennial (perennial), which are not used as recycled materials. In addition, their quantity is small and they are "zero carbon" in the natural cycle. They are not included in the calculation, so only the carbon sinks of sugarcane stems and leaves are calculated.

[0062] In this embodiment, the carbon sink algorithm in the sugarcane stem growth stage is:

[0063]

[0064] In the formula, C gj It is a carbon sink during the growth stage of sugarcane stem;

[0065] M i,j is the average yield per unit area of ​​sugarcane stalk in the region;

[0066] S i,j is the regional planting area;

[0067] C j,ar The average carbon content of sugarcane stems in the region.

[0068] The carbon sink algorithm in the sugarcane leaf growth stage is:

[0069]

[0070] In the formula, C gy It is the carbon sink during the sugarcane leaf growth stage;

[0071] M i,y is the average yield of sugarcane leaf per unit area of ​​regional planting area;

[0072] S i,y is the regional planting area;

[0073] C y,ar The average basal carbon content of regional sugarcane leaves.

[0074] (2) The residual carbon sink algorithm of the sucrose product processing, as shown in the figure, includes the carbon sink algorithm of sucrose, bagasse, filter mud and orange juice, and the algorithm is as follows:

[0075] C j =C gt +C gz +C ln +C js (4)

[0076] In the formula, C j It is the residual carbon sink of sugar cane processed products;

[0077] C gt It is a carbon sink for sucrose;

[0078] C gz It is a carbon sink for bagasse;

[0079] C ln To consider peat sink;

[0080] C js It is the carbon sink of orange water.

[0081] Among them, after the sugar cane is harvested, the product after a series of processing is sucrose, and the by-products are bagasse, filter mud, and orange juice, all of which have the ability to fix carbon.

[0082] In this embodiment, the carbon sink algorithm of sucrose is:

[0083]

[0084] In the formula, Q i,gjThe total amount of sugarcane stems entering the sugar mills in the region;

[0085] I i It is the sugar yield rate of regional sugar cane.

[0086] In this embodiment, the bagasse is the mixed name of the residue and pith left after the sugar cane is squeezed, which can be used to make carbon-fixing products such as environmentally friendly tableware and high-quality paper products. Most of them are burned as boiler fuel, and the remaining bagasse is packaged and can be used as environmentally friendly tableware, high-quality paper and other products to fix carbon. The carbon sink algorithm is:

[0087]

[0088] In the formula, Q i,gj The total amount of sugarcane stems entering the sugar mills in the region;

[0089] B i,j is the regional bagasse remaining packaging rate;

[0090] C gz,ar Average as-received carbon content of bagasse for the region.

[0091] In this embodiment, the filter mud is the compressed sugar industry waste generated during the filtration of sugar cane juice, which can be used as chemicals, biosorbents, fertilizers, etc. to fix carbon. The carbon sink algorithm is:

[0092]

[0093] Where Q i,gj is the total amount of sugarcane stems entering the sugar mills in the region;

[0094] L i is the regional filter mud yield, i.e. the proportion of filter mud to the processed sugarcane stalks;

[0095] C ln,ar is the average received carbon content of regional filter mud.

[0096] In this embodiment, the orange juice is a kind of sugar separated from the sugarcane sugar production process. It is not economically cost-effective to use it to boil sugar again. It is a by-product waste honey, which also fixes a large amount of carbon. The carbon sink algorithm is:

[0097]

[0098] Where Q i,gj is the total amount of sugarcane stems entering the sugar mills in the region;

[0099] J i is the regional citrus juice yield, that is, the proportion of citrus juice to the processed sugarcane stems;

[0100] C js,ar is the average received carbon content of regional filter mud.

[0101] For a more scientific and convenient calculation, the reference values ​​of sugar cane carbon sink data in Guangxi were statistically compiled based on the production and sample data of more than 30 sugar-making enterprises in Guangxi in the past nine years (Table 1).

[0102] Table 1 Reference values ​​of sugar cane carbon sink data in Guangxi

[0103]

[0104]

[0105] The present invention calculates carbon sinks through the production stage and processed product stage of a sugar cane planting season respectively. The crop production stage includes carbon sinks in sugarcane stems and carbon sinks in sugarcane leaves; the residual carbon sinks in processed products include carbon sinks in bagasse, sucrose, filter mud and orange juice. Compared with the method of calculating by per mu yield, the present invention achieves a more accurate calculation of the carbon sink capacity of sugar cane at each stage, making the calculation of the total agricultural carbon sink of sugar cane in a planting season more accurate.

[0106] Example 2

[0107] On the basis of Example 1, in order to further accurately calculate the agricultural carbon sink of a sugar cane planting season, taking the sugar cane in the crushing season of 2023-2024 in Guangxi as an example, the planting area is 11.24 million mu, and the crushing volume is 51.1801 million tons. The specific algorithm of carbon sink is as follows:

[0108] (1) Carbon sinks in the sugar cane production stage, including carbon sinks in sugar cane stems and leaves.

[0109] The carbon sink algorithm for the sugarcane stem growth stage is to substitute the statistical production and test data (Table 1) into formula (2):

[0110]

[0111] The carbon sink algorithm for the sugarcane leaf growth stage is to substitute the production and test data (Table 1) into formula (3):

[0112]

[0113] The total carbon sink algorithm for sugar cane production stage is to substitute the data into formula (1): C s =C gj +C gy =9.5636 million tons + 9.8417 million tons = 19.4053 million tons

[0114] (2) Residual carbon sinks from sugarcane product processing, including carbon sinks from sugarcane, bagasse, filter mud, and orange juice.

[0115] The carbon sink of sucrose is to substitute the statistical production and test data (Table 1) into formula (5):

[0116]

[0117] Carbon sequestration of bagasse, put the statistical production and test data (Table 1) into formula (6):

[0118]

[0119] Carbon sink of filter mud, put the statistical production and test data (Table 1) into formula (7):

[0120]

[0121] Carbon sink of orange water, put the statistical production and test data (Table 1) into formula (8):

[0122]

[0123] The residual carbon sink algorithm for sugarcane product processing is to substitute the data into formula (4):

[0124] C j =C gt +C gz +C ln +C js =86.75+308.04+47.97+31.23=4739900 tons

[0125] Therefore, after calculating the agricultural carbon sink of one sugar cane planting season in Guangxi during the 2023-2024 crushing season, the total carbon sink in the growth stage is 19.4053 million tons, and the remaining carbon sink after processing is 4.7399 million tons.

[0126] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. An agricultural carbon sink algorithm for a sugar cane planting season, including a production phase carbon sink algorithm and a product processing residual carbon sink algorithm, characterized in that: The carbon sink algorithm in the sugar cane production stage includes the carbon sink algorithm for sugar cane stems and sugar cane leaves, and the algorithm is as follows: C s =C gj +C gy In the formula, C s Sugar cane acts as a growth carbon sink; C gj It is a carbon sink for sugarcane stems; C gy It is a carbon sink for sugarcane leaves; The residual carbon sink algorithm for sucrose product processing includes the carbon sink algorithm for sucrose, bagasse, filter mud, and orange juice, and the algorithm is as follows: C j =C gt +C gz +C ln +C js In the formula, C j It is the residual carbon sink of sugar cane processed products; C gt It is a carbon sink for sucrose; C gz It is a carbon sink for bagasse; C ln To consider peat sink; C js It is the carbon sink of orange water.

2. The agricultural carbon sink algorithm for a sugar cane planting season according to claim 1, characterized in that: The carbon sink algorithm during the growth stage of the sugarcane stem is: Where M i,j is the average yield per unit area of ​​sugarcane stalk in the region; S i,j is the regional planting area; C j,ar The average carbon content of sugarcane stems in the region.

3. The agricultural carbon sink algorithm for a sugar cane planting season according to claim 1, characterized in that: The carbon sink algorithm in the sugarcane leaf growth stage is: Where M i,y is the average yield of sugarcane leaf per unit area of ​​regional planting area; S i,y is the regional planting area; C y,ar It is the average basal carbon content of sugarcane leaves in the region.

4. The agricultural carbon sink algorithm for a sugar cane planting season according to claim 1, characterized in that: The carbon sink algorithm of sucrose is: In the formula, Q i,gj The total amount of sugarcane stems entering the sugar mills in the region; I i It is the sugar yield rate of regional sugar cane.

5. The agricultural carbon sink algorithm for a sugar cane planting season according to claim 1, characterized in that: The carbon sink algorithm of bagasse is: In the formula, Q i,gj The total amount of sugarcane stems entering the sugar mills in the region; B i,j is the regional bagasse remaining packaging rate; C gz,ar Average as-received carbon content of bagasse for the region.

6. The agricultural carbon sink algorithm for a sugar cane planting season according to claim 1, characterized in that: The carbon sink algorithm of the filter mud is: Where Q i,gj The total amount of sugarcane stems entering the sugar mills in the region; L i is the regional filter mud yield, i.e. the proportion of filter mud to the processed sugar cane stalks; C lv,ar is the average received carbon content of regional filter mud.

7. The agricultural carbon sink algorithm for a sugar cane planting season according to claim 1, characterized in that: The carbon sink algorithm of orange water is: Where Q i,gj The total amount of sugarcane stems entering the sugar mills in the region; J i is the regional citrus juice yield, that is, the proportion of citrus juice to the processed sugar cane stalks; C js,ar is the average received carbon content of regional filter mud.

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