A management method to improve the carbon sequestration capacity of Masson pine forests

Abstract

This invention discloses a management method for improving the carbon sequestration capacity of Masson pine forests, belonging to the field of Masson pine forest management technology. The method includes steps such as land preparation and clearing, density optimization, mixed planting, formation of multi-layered forests, and post-management. Through the above method, pure Masson pine forests are transformed and managed into multi-layered mixed forests. During this process, fermented fertilizer prepared from pine needle litter is applied to increase the organic matter content of the forest soil, promote good tree growth, increase biomass, and optimize forest stand structure. This, in turn, enhances the carbon sequestration capacity of the tree layer, understory vegetation layer, and soil layer, comprehensively improving the carbon sink capacity of Masson pine forests, which is of great significance for improving the ecological environment.

Description

Technical Field

[0001] This invention relates to the field of Masson pine forest management technology, and in particular to a management method for improving the carbon sequestration capacity of Masson pine forests. Background Technology

[0002] Climate change is the foremost of the ten major ecological problems facing humanity, and the greenhouse effect, caused by the massive emission of greenhouse gases such as carbon dioxide, is the root cause of global warming. Forests' carbon sequestration function has the advantage of being more economical and efficient than other emission reduction methods. The annual carbon exchange between forests and the atmosphere through photosynthesis and respiration accounts for up to 90% of the annual carbon exchange between terrestrial ecosystems, playing an irreplaceable role in global carbon cycling and balance, as well as in regulating global climate.

[0003] Masson pine (scientific name: *Pinus massoniana*) is a major afforestation tree species in southern my country, characterized by its rapid growth, strong adaptability, and high-quality timber, and is widely distributed throughout the region. However, large areas of pure Masson pine forests in southern my country suffer from varying degrees of degradation. Traditional management methods for these forests often result in low carbon storage and weak carbon sequestration capacity, hindering their carbon sequestration function. Transforming pure Masson pine forests into mixed coniferous and broadleaf forests through near-natural management or the artificial introduction of broadleaf species is an important means of improving the quality and efficiency of inefficient pure Masson pine forests. However, due to the effects of pine needle decomposition and acid rain leaching, the soil in Masson pine forests becomes acidified and nutrient-poor. Therefore, when planting mixed species, problems such as long recovery periods and low seedling survival rates often arise, further reducing forest management efficiency.

[0004] Therefore, it is currently necessary to find a management method to improve the carbon sequestration capacity of Masson pine forests, increase the survival rate of mixed tree species during the construction of mixed Masson pine forests, better increase the biomass in the forest, so as to exert greater carbon sequestration benefits and effectively improve the ecological environment. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a management method for improving the carbon sequestration capacity of Masson pine forests, solving the problem of low seedling survival rate during mixed management of degraded Masson pine forests, so as to better improve the carbon sequestration benefits of Masson pine forests.

[0006] The present invention solves the above-mentioned technical problems through the following technical means:

[0007] A management method for improving the carbon sequestration capacity of Masson pine forests, the method being as follows:

[0008] (1) Clearing the land and forest: Remove vines and weeds from the forest and cut down shrubs that are not growing well;

[0009] (2) Density optimization: Thinning of Masson pine was carried out to optimize the density of Masson pine in the forest;

[0010] (3) Mixed planting: Collect forest litter to make fermented fertilizer, and then plant mixed broad-leaved trees, applying fermented fertilizer during the planting process;

[0011] (4) Formation of multi-layered forest: After planting mixed broad-leaved trees for 3 to 6 months, shrubs are planted. When planting shrubs, the fermented fertilizer prepared in step (3) is applied. After 2 to 4 months, herbaceous plants are sown to form a mixed coniferous and broad-leaved multi-layered forest.

[0012] (5) Post-construction management: The mixed multilayer forest will be managed in accordance with conventional methods to ensure a good growth environment for the trees.

[0013] By optimizing density, mixed planting, forming multi-layered forests, and carrying out subsequent management, pure Masson pine forests are transformed into mixed multi-layered forests. This optimizes the forest stand structure, improves the forest ecological environment, and increases the organic matter content of the forest soil. In turn, it effectively enhances the carbon sequestration capacity of the forest tree layer, the understory vegetation layer, and the soil layer, better stimulates the carbon sequestration potential of Masson pine forests, and better improves the ecological environment.

[0014] Furthermore, in step (2), the density of Masson pine in the intermediate felling forest is maintained at 60-80 trees / acre. During thinning, the principle of removing inferior trees and keeping superior trees, removing dense trees and keeping sparse trees, and removing weak trees and keeping strong trees is followed. Trees with straight trunks and good growth are retained, while diseased, dead, crooked, fallen, and dwarf trees are felled.

[0015] Furthermore, the method for preparing fermented fertilizer in step (3) is as follows:

[0016] A: Collect litter mainly composed of pine needles from the forest, crush it to a length of 0.5-2cm, and then adjust the moisture content and pH to obtain refined litter.

[0017] B: Dissolve o-aminobenzyl alcohol in ethanol, dilute with water, spray onto the refined waste, and let stand overnight; then spray with 5wt% chloroacetic acid solution and mix evenly to obtain pretreated residue;

[0018] C: Add isomaltitol and soybean powder to the pretreated residue, mix thoroughly, and then compost for fermentation. After fermentation, spread the mixture out and let it stand for 1-2 days to obtain fermented fertilizer.

[0019] In pure stands of *Pinus massoniana* forests, litter mainly consists of pine needles. The organic acids released during their decomposition cause soil acidification and nutrient leaching. Furthermore, the slow decomposition of pine needles prevents timely nutrient return to the soil, resulting in low soil fertility, prolonged recovery time for planted seedlings, and low survival rates. This invention collects pine needle-based litter from the forest, crushes it, and composts it to obtain fermented fertilizer. Applying this fermented fertilizer allows nutrients from the pine needles to be promptly returned to the forest soil, ensuring nutrient supply, improving survival rates, and effectively improving the physical and chemical properties of the forest soil, thereby enhancing the soil's carbon sequestration capacity.

[0020] However, the large amount of volatile oil in pine needles can limit their fermentation and decomposition. Therefore, this invention involves spraying pulverized pine needles with o-aminobenzyl alcohol after adjusting their moisture content and pH. O-aminobenzyl alcohol acts on the pine needles, disrupting the cell wall structure and increasing the intercellular spaces. This allows chloroacetic acid solution to quickly penetrate the pine needles, reacting with and combining with the volatile oils to break their chemical bonds, reduce their chemical stability, and promote the decomposition of the volatile oils. This eliminates the inhibitory effect on pine needle decomposition, accelerates the decomposition rate, and efficiently releases nutrients. Subsequently, under the action of isomaltitol, the pine needles in the pretreated residue decompose towards humification, forming fermented fertilizer with a higher organic matter content. Applying this fermented fertilizer can effectively increase the organic matter content in the forest soil, thereby improving the soil's carbon sequestration capacity. Furthermore, the fermented fertilizer continuously converts and releases nutrients, ensuring a continuous supply of nutrients to the trees in the forest, improving the survival rate of planted trees, and increasing the forest biomass, thus effectively increasing the forest's biological carbon sequestration capacity.

[0021] Furthermore, soybean flour is added during the fermentation fertilizer preparation process for mixing and composting. The soybean flour reacts with the compost leachate to regulate the acid-base balance of the fermented fertilizer, promoting the humification process and solving the problem of further soil acidification caused by the natural decomposition of pine needles in the forest. This also helps to better retain nutrients. Fermented fertilizer effectively increases the seedling recovery time and survival rate during afforestation, and continuously promotes the growth of forest plants, increases soil organic matter content, and thus enhances the carbon sequestration capacity of the tree layer, shrub layer, herb layer, and soil layer, better realizing the carbon sequestration potential of Masson pine forests and effectively improving the ecological environment.

[0022] Furthermore, in step A, the moisture content is adjusted to 50-60%, and the carbon-nitrogen ratio is adjusted to 20:1.

[0023] Furthermore, in step B, the mass ratio of o-aminobenzyl alcohol, refined litter, and 5wt% chloroacetic acid solution is (1-2):(200-400):(2-3).

[0024] Furthermore, in step C, the mass ratio of pretreated residue, isomaltitol, and soybean flour is (220-440):(3-5):(5-7).

[0025] Furthermore, the amount of fermented fertilizer applied is 1–3 kg / plant.

[0026] Furthermore, the mixed broad-leaved trees are any one or two of the following: Phoebe zhennan, Schima superba, Liquidambar formosana, Phoebe bournei, Betula platyphylla, Liriodendron chinense, Quercus acutissima, Castanopsis fargesii, and Quercus glauca. After planting, the density of mixed broad-leaved trees in the forest is 70-120 trees / acre.

[0027] Furthermore, the planted shrubs are any one or two of the following: rhododendron, black privet, wisteria, lespedeza, galbana, loropetalum, golden camellia, tea with stamens, euphorbia, and horse chestnut. After planting, the shrub density in the forest is 150-250 plants per mu.

[0028] Furthermore, the herbaceous plants mentioned are any one or two of the following: Aster tataricus, Dryopteris crassirhizoma, Miscanthus sinensis, Imperata cylindrica, Agrostis pilosa, Caryophyllum lanceolatum, Rhizoma Cimicifugae, and Rhizoma Cimicifugae, with a sowing rate of 2-5 kg / mu.

[0029] Beneficial effects:

[0030] 1. This invention manages pure Masson pine forests into multi-layered mixed forests through steps such as land preparation and clearing, density optimization, mixed planting, and multi-layered forest formation. This optimizes forest structure, increases forest biomass, and enhances biodiversity, thereby improving the carbon storage capacity of the entire ecosystem.

[0031] 2. In the process of establishing a multi-layered mixed forest of Masson pine, this invention prepares the litter, mainly pine needles, into fermented fertilizer through a specific method and applies it to the planted seedlings. This can increase the organic matter content in the forest soil and enhance the carbon sequestration capacity of the soil layer. At the same time, the fermented fertilizer can effectively improve the survival rate of trees during the afforestation process, improve afforestation efficiency, and continuously promote the healthy growth of forest plants, thereby better enhancing the forest biomass, thus realizing greater carbon sequestration potential and improving the ecological environment. Attached Figure Description

[0032] Figure 1 : Images showing the growth status of *Phoebe zhennan* planted in the blank control group of Experiment 2 of this invention;

[0033] Figure 2 : This is a picture showing the growth status of *Phoebe zhennan* planted in experimental group 1 of Experiment 2 of this invention. Detailed Implementation

[0034] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings:

[0035] Example 1: Preparation of Fermented Fermentation Fertilizer

[0036] A: Collect litter mainly composed of pine needles from the forest, crush it to a length of about 1cm, then adjust the moisture content to 55% and the carbon-nitrogen ratio to 20:1 to obtain refined litter;

[0037] B: Dissolve 1.5 kg of o-aminobenzyl alcohol in 1.5 kg of 75% ethanol, dilute with water 10 times, spray onto 300 kg of refined waste, mix evenly and let stand overnight; then spray with 2.5 kg of 5 wt% chloroacetic acid solution and mix evenly to obtain pretreated residue.

[0038] C: Add 4kg of isomaltitol and 6kg of soybean powder to 330kg of pretreated residue, mix thoroughly, pile up and ferment. After fermentation, spread out and let stand for 2 days to obtain fermented fertilizer.

[0039] Example 2: Preparation of Fermented Fermentation Fertilizer

[0040] A: Collect litter mainly composed of pine needles from the forest, crush it to a length of about 1cm, then adjust the moisture content to 50% and the carbon-nitrogen ratio to 20:1 to obtain refined litter;

[0041] B: Dissolve 1 kg of o-aminobenzyl alcohol in 1 kg of 75% ethanol, dilute with water 10 times, spray onto 200 kg of refined waste, mix evenly and let stand overnight; then spray with 2 kg of 5 wt% chloroacetic acid solution and mix evenly to obtain pretreated residue.

[0042] C: Add 3kg of isomaltitol and 5kg of soybean powder to 220kg of pretreated residue, mix thoroughly, pile up and ferment. After fermentation, spread out and let stand for 2 days to obtain fermented fertilizer.

[0043] Example 3: Preparation of Fermented Fermentation Fertilizer

[0044] A: Collect litter mainly composed of pine needles from the forest, crush it to a length of about 1cm, then adjust the moisture content to 60% and the carbon-nitrogen ratio to 20:1 to obtain refined litter;

[0045] B: Dissolve 2 kg of o-aminobenzyl alcohol in 2 kg of 75% ethanol, dilute with water 10 times, spray onto 400 kg of refined waste, mix evenly and let stand overnight; then spray with 3 kg of 5 wt% chloroacetic acid solution and mix evenly to obtain pretreated residue.

[0046] C: Add 5kg of isomaltitol and 7kg of soybean powder to 440kg of pretreated residue, mix thoroughly, pile up and ferment. After fermentation, spread out and let stand for 2 days to obtain fermented fertilizer.

[0047] Comparative Example 1: Preparation of Fermented Fertilizer

[0048] Compared with Example 1, the only difference is that o-aminobenzyl alcohol was not used in step B of the fermentation fertilizer preparation in Comparative Example 1, as shown below:

[0049] A: Same as Example 1;

[0050] B: Take 300 kg of refined waste, spray it with 2.5 kg of 5 wt% chloroacetic acid solution and mix evenly to obtain pretreated residue;

[0051] C: Same as in Example 1.

[0052] Comparative Example 2: Preparation of Fermented Fertilizer

[0053] Compared with Example 1, the only difference is that in Comparative Example 2, chloroacetic acid solution was not used in step B of the fermentation fertilizer preparation process, as detailed below:

[0054] A: Same as Example 1;

[0055] B: Dissolve 1.5 kg of o-aminobenzyl alcohol in 1.5 kg of 75% ethanol, dilute with water 10 times, spray onto 300 kg of refined waste, mix evenly, and let stand overnight to obtain pretreated residue.

[0056] C: Same as in Example 1.

[0057] Comparative Example 3: Preparation of Fermented Fertilizer

[0058] Compared with Example 1, the only difference is that isomaltulitol was not added in step C of the fermentation fertilizer preparation in Comparative Example 3, as shown below:

[0059] A-B: Same as in Example 1;

[0060] C: Add 6 kg of soybean powder to 330 kg of pretreated residue, mix thoroughly and evenly, pile it up for fermentation, and after fermentation, spread it out and let it stand for 2 days to obtain fermented fertilizer.

[0061] Comparative Example 4: Preparation of Fermented Fertilizer

[0062] Compared with Example 1, the only difference is that soybean flour was not added in step C of the fermentation fertilizer preparation in Comparative Example 4, as shown below:

[0063] A-B: Same as in Example 1;

[0064] C: Add 4 kg of isomaltitol to 330 kg of pretreated residue, mix thoroughly, pile up for fermentation, and after fermentation, spread out and let stand for 2 days to obtain fermented fertilizer.

[0065] Example 4: Management methods to improve the carbon sequestration capacity of pure Masson pine forests

[0066] (1) Land preparation and forest clearing: Cut down and clear vines, weeds and poorly growing shrubs in the Masson pine forest to be managed;

[0067] (2) Density optimization: After clearing the forest, the Masson pine trees in the forest are thinned according to the principle of removing inferior trees and keeping superior trees, removing dense trees and keeping sparse trees, and removing weak trees and keeping strong trees. Straight trunks and healthy Masson pines are retained, while diseased, dead, crooked, fallen and dwarf trees are removed. After thinning, the density of Masson pine trees in the forest is kept at 70 trees / acre to optimize the density of Masson pine trees, so that the subsequent planting of trees can better cooperate with Masson pine trees, improve the disease resistance and ecological stability of the forest.

[0068] (3) Mixed planting: Collect the litter mainly composed of pine needles in the forest to prepare the fermented fertilizer of Example 1, and then plant the mixed broad-leaved tree species Phoebe zhennan to form a mixed coniferous and broad-leaved forest. When planting Phoebe zhennan, apply fermented fertilizer at a rate of 2 kg / tree and the planting density of Phoebe zhennan is 100 trees / acre.

[0069] (4) Formation of multi-layered forest: Four months after planting Phoebe zhennan, Eupatorium fortunei is planted. During the planting process, fermented fertilizer is applied at a rate of 1.5 kg / plant and the planting density of Eupatorium fortunei is 180 plants / mu. Three months later, seeds of Dryopteris crassirhizoma are sown at a rate of 3 kg / mu, thus forming a mixed coniferous and broad-leaved multi-layered forest.

[0070] (5) Post-construction management: In the later stage, the multi-layered mixed forest will be managed and maintained in accordance with conventional methods, including pest and disease control, branch pruning, etc., to ensure a good growth environment in the forest and promote the good growth of trees.

[0071] Experiment 1: Testing the Fermentation and Completion of Fermented Fermentation Fermentation

[0072] The fermentation and composting time (specifically, when the pine needles turned dark brown and no obvious needle-like material was present) during the preparation of fermented fertilizers in Examples 1-3 and Comparative Examples 1-4 was recorded. The content of organic matter and available phosphorus in the composted pine needles of each group was also tested. The data are shown in Table 1.

[0073] Table 1

[0074]

[0075]

[0076] Based on the data analysis in Table 1, we can conclude that:

[0077] (1) In Examples 1 to 3 of the present invention, the fermentation and decomposition time of pine needles is shorter than that of Comparative Examples 1 to 4, while the organic matter content and available phosphorus content of the fermented fertilizer obtained are higher. This indicates that the fermentation and decomposition of pine needles according to the method of the present invention can shorten the fermentation and decomposition time of pine needles and improve the degree of fermentation and decomposition. The fermented fertilizer with a high amount of organic matter obtained can be used to promote the good growth and development of forest trees.

[0078] (2) In Comparative Example 1, o-aminobenzyl alcohol was not used during the preparation of the fermented fertilizer, which reduced the decomposition effect of chloroacetic acid on the volatile oil in pine needles, and thus the volatile oil inhibited the decomposition of pine needles; in Comparative Example 2, chloroacetic acid was not added during the preparation of the fermented fertilizer; the pine needle decomposition time increased and the degree of decomposition decreased; in Comparative Example 3, isomaltitol was not added during the preparation of the fermented fertilizer, which failed to accelerate the humification of pine needles and reduced the organic matter content; in Comparative Example 4, soybean flour was not added during the preparation of the fermented fertilizer, which reduced the humification of pine needles to a certain extent, thus reducing the organic matter content. At the same time, the acid-base balance was not maintained well, and nutrient loss resulted in a significant reduction in the available phosphorus content.

[0079] Experiment 2: Planting Phoebe zhennan under the forest canopy

[0080] 1. Experimental grouping: The effects of fermented fertilizers prepared in Example 1 and Comparative Examples 1-4 were tested. The experiment was divided into 6 groups: experimental group 1, control group 1-4, and blank control group.

[0081] 2. Experimental Methods: The experiment was conducted in a Masson pine forest in Jinshan Village, Shibao Town, Zhongxian County, Chongqing. The specific experimental method is as follows: Soil from the forest was dug up and mixed evenly with the fermented fertilizer prepared in Example 1 and Comparative Examples 1-4 at a mass ratio of 4:1 to obtain mixed planting soil for experimental group 1 and control groups 1-4. Then, one-year-old Phoebe zhennan seedlings with the same growth status were planted in the forest. When planting, the planting holes were filled with the mixed planting soil of experimental group 1 and control groups 1-4 respectively. For the blank control group, the soil was directly backfilled without mixing with fermented fertilizer. Ten Phoebe zhennan seedlings were planted in each group. The experiment was repeated three times. The survival rate of Phoebe zhennan seedlings in each group and the height growth of seedlings after 10 months and 18 months of planting were recorded. The data are shown in Table 2.

[0082] Table 2

[0083] Survival rate (%) Plant height growth in 10 months (cm) Plant height growth in 18 months (cm) Experimental group 1 95.6 64.5 118.1 Control group 1 93.3 61.8 109.5 Control group 2 91.1 59.4 110.7 Control group 3 86.7 63.7 112.2 Control group 4 80.0 60.6 105.2 Blank control 66.7 52.5 88.4

[0084] Based on the data analysis in Table 2, we can conclude that:

[0085] (1) The survival rate and height growth of seedlings in control groups 1-4 and blank control group decreased to varying degrees compared with experimental group 1. This indicates that applying fermented fertilizer with high organic matter content prepared from pine needles and other litter in the forest according to the method of the present invention can effectively improve the survival rate of planted trees and continuously provide nutrients for the trees to increase the biomass of the trees, thereby effectively increasing the carbon sequestration capacity of the established Masson pine forest.

[0086] (2) In the preparation of the mixed fermented fertilizers in control groups 1 and 2, o-aminobenzyl alcohol and chloroacetic acid were not used to treat the pine needles. The volatile oil in the pine needles inhibited the decomposition and decomposition, resulting in low nutrient content and poor growth of Phoebe zhennan. In the preparation of the mixed fermented fertilizers in control group 3, maltitol was not used for treatment, so the fermented fertilizer was mineralized. The fertilizer had a high content of nutrients that plants could directly absorb and utilize, which caused seedling burn during the recovery period and reduced the survival rate. In the fermented fertilizers in control group 4, soybean flour was not added, so the pH of the fermented fertilizer was not suitable for the growth of Phoebe zhennan, which reduced the survival rate and growth.

[0087] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention. Technical aspects, shapes, and structures not described in detail in this invention are all well-known technologies.

Claims

1. A management method for improving the carbon sequestration capacity of Pinus massoniana forests, characterized by, The method is as follows: Step (1) Clearing the forest: Remove vines and weeds from the forest and cut down shrubs that are not growing well; Step (2) Density optimization: Thinning of Masson pine trees to optimize the density of Masson pine trees in the forest; Step (3) Mixed planting: Collect forest litter to make fermented fertilizer, and then plant mixed broad-leaved trees, applying fermented fertilizer during the planting process; Step (4) Formation of multi-layered forest: After planting mixed broad-leaved trees for 3 to 6 months, shrubs are planted. When planting shrubs, the fermented fertilizer prepared in step (3) is applied. After 2 to 4 months, herbaceous plants are sown to form a mixed coniferous and broad-leaved multi-layered forest. Step (5) Post-construction management: In the later stage, the mixed multilayer forest shall be managed in accordance with conventional methods to ensure a good growth environment for the trees; The method for preparing fermented fertilizer in step (3) is as follows: Step A: Collect litter mainly composed of pine needles from the forest, crush it to a length of 0.5-2cm, and then adjust the moisture content and pH to obtain fine litter. Step B: Dissolve o-aminobenzyl alcohol in ethanol, dilute with water, spray onto the refined waste, and let stand overnight; then spray with 5wt% chloroacetic acid solution and mix evenly to obtain pretreated residue; Step C: Add isomaltitol and soybean flour to the pretreated residue, mix thoroughly, and then compost for fermentation. After fermentation, spread the mixture out and let it stand for 1-2 days to obtain fermented fertilizer.

2. The management method for improving the carbon sequestration capacity of Pinus massoniana forest according to claim 1, characterized in that, In step (2), the density of Masson pine in the forest after intermediate felling is maintained at 60-80 trees / acre.

3. The management method for improving the carbon sequestration capacity of Pinus massoniana forest according to claim 2, characterized in that, In step A, the moisture content is adjusted to 50-60%, and the carbon-nitrogen ratio is adjusted to 20:

1.

4. The management method for improving the carbon sequestration capacity of Pinus massoniana forest according to claim 3, characterized in that, In step B, the mass ratio of o-aminobenzyl alcohol, refined litter, and 5wt% chloroacetic acid solution is (1-2):(200-400):(2-3).

5. A management method for improving the carbon sequestration capacity of Masson pine forests according to claim 4, characterized in that, In step C, the mass ratio of pretreated residue, isomaltitol, and soybean flour is (220-440):(3-5):(5-7).

6. A management method for improving the carbon sequestration capacity of Masson pine forests according to claim 5, characterized in that, The amount of fermented fertilizer applied is 1-3 kg / plant.

7. The management method for improving the carbon sequestration capacity of Masson pine forests according to claim 1, characterized in that, In step (3), the mixed broad-leaved trees planted are any one or two of the following: Phoebe zhennan, Schima superba, Liquidambar formosana, Phoebe bournei, Betula platyphylla, Liriodendron chinense, Quercus acutissima, Castanopsis fargesii, and Quercus glauca. After planting, the density of mixed broad-leaved trees in the forest is 70 to 120 trees per mu.

8. A management method for improving the carbon sequestration capacity of Masson pine forests according to claim 7, characterized in that, In step (4), the shrubs planted are any one or two of the following: rhododendron, black privet, wisteria, lespedeza, euphorbia, loropetalum, golden camellia, tea bud, euphorbia pekinensis, and horse chestnut. After planting, the density of shrubs in the forest is 150-250 plants / mu.

9. A management method for improving the carbon sequestration capacity of Masson pine forests according to claim 8, characterized in that, The herbaceous plants mentioned are any one or two of the following: Aster tataricus, Dryopteris crassirhizoma, Miscanthus sinensis, Imperata cylindrica, Agrostis pilosa, Caryophyllum lanceolatum, Rhizoma Cimicifugae, and Rhizoma Cimicifugae, with a sowing rate of 2-5 kg / mu.

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