Randomly configured afforestation method and system for forest stand vertical fault restoration

Abstract

The invention discloses a randomly configured afforestation method and system for forest stand vertical fault restoration. The afforestation method comprises the following steps: constructing a random complementary planting structure unit; the forest windows are graded according to the area scale, and different numbers of random complementary planting structure units are supplemented in a random configuration mode; selecting nursery stocks to be subjected to complementary planting; standardizing seedling planting and management; reasonably selecting complementary planting tree species of the random complementary planting structure units; the planting and afforestation time is stipulated. According to the method, dumbbell-shaped and torch-shaped configuration units are constructed, the forest windows with different areas and scales are graded, and different numbers of random complementary planting structure units are supplemented by adopting a random configuration mode, so that the stability and ecological diversity of the forest are remarkably improved. By simulating a random structure of a natural forest and constructing a random structural body, a long-acting and stable microenvironment is provided for the forest, the overall health and stability of the forest stand are maintained, the natural succession of the forest structure is accelerated, and rapid formation of a multi-tree mixed forest is promoted.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of artificial afforestation technology or ecological restoration, and particularly relates to a random configuration afforestation method and system for forest stand vertical fault repair. BACKGROUND

[0002] In discussing the current situation and challenges of forest management in China, we must recognize that although the forest area and forest volume in China have achieved "double growth" for 30 consecutive years, the problem of low forest quality is still the most prominent difficulty in the field of forestry in China. The key to improving forest quality lies in strengthening forest management, which is not only the eternal theme of modern forestry construction, but also the main direction and core task, and is also the process and means to achieve precise improvement of forest quality. Forest structure, as a driving factor of forest growth and ecological process, is directly related to the function of forest ecosystem, including biomass output, species diversity and biological habitat, thereby determining the quality of forest ecosystem service function. Therefore, cultivating a healthy and stable forest is the primary purpose of modern forest management, and the system rule of structure determining function is the core that we must grasp. In the process of forest restoration, the restoration of community structure precedes the restoration of function, therefore, restoring the structure of the community is the key to the restoration of degraded forest ecosystems.

[0003] However, the existing technology has significant problems in improving forest quality and restoring degraded forest ecosystems. First, the traditional artificial afforestation method adopts a regular planting method in rows and columns, which leads to the simplification of forest structure and the reduction of stability due to the strong artificial regulation. Second, in the process of restoring degraded forest ecosystems, the randomness of afforestation under natural canopy lacks scientificity, which makes it difficult to form a healthy and stable forest structure. In addition, the defects of forest spatial structure are also a big problem, in which the trees in the uniform body are under multi-directional competition pressure, and the weak trees are easily eliminated, and the structure body collapses and recombines into a new structure body, leading to unstable forest stand. The crowded distribution of adjacent trees in the aggregate body causes asymmetric competition, and when the competition intensity exceeds the threshold, the growth of weak trees is limited or even dies, leading to the disintegration of the structure body, further reducing the stability of the structure body. The high proportion of non-random bodies is also a problem, after the forest suffers from natural disasters or human disturbance, the increase of non-random bodies (uniform body, aggregate body) will break the balance of the original spatial structure, affecting the health of the forest stand. Finally, the limitation of natural forest regeneration mechanism is that although the initial tree distribution of natural forest has irregularity, the traditional regeneration method (such as under-canopy afforestation "needle insertion") fails to scientifically imitate the random structure of natural forest, leading to significant differences in stability between artificial forest and natural forest.

[0004] In summary, the prior art has obvious deficiencies in forest quality improvement, stand spatial structure optimization and natural forest regeneration mechanism, which need to be solved by innovative methods and strategies to realize the healthy and stable development of forest ecosystem. SUMMARY

[0005] The embodiment of the present application provides a forest vertical fault repair random configuration afforestation method and system to solve the technical problems of single forest structure, poor stability caused by the regular planting method in traditional artificial afforestation, and slow formation of random structure and difficulty in developing mixed forest caused by the randomness of afforestation under natural forest canopy.

[0006] A forest vertical fault repair random configuration afforestation method, comprising:

[0007] S1, in the forest vertical fault repair, a random supplement planting structure unit is constructed, the random supplement planting structure unit comprises a dumbbell type configuration unit and a torch type configuration unit;

[0008] S2, the forest gap is divided into grades according to the size of the area, and different numbers of the random supplement planting structure unit are supplemented in different grades of the forest gap in a random configuration mode;

[0009] S3, after the number of the random supplement planting structure unit is determined, a seedling to be supplemented is selected;

[0010] S4, the seedling planting and management are standardized;

[0011] S5, according to the management target, the supplement planting tree species of the random supplement planting structure unit are reasonably selected;

[0012] S6, the afforestation time is specified to improve the survival rate of the seedling.

[0013] A forest vertical fault repair random configuration afforestation system, comprising:

[0014] A random supplement planting structure unit construction module is configured to construct a random supplement planting structure unit in the forest vertical fault repair, and the random supplement planting structure unit comprises a dumbbell type configuration unit and a torch type configuration unit;

[0015] A forest gap area grade division module is configured to divide the forest gap into grades according to the size of the area, and different numbers of the random supplement planting structure unit are supplemented in different grades of the forest gap in a random configuration mode;

[0016] a seedling selection module for selecting seedlings to be supplemented after determining the number of random supplement structure units;

[0017] a seedling planting and management specification module for specifying seedling planting and management;

[0018] a tree species selection module for reasonably selecting supplement tree species of the random supplement structure unit according to the management target;

[0019] a afforestation time specification module for specifying the afforestation time to improve the survival rate of seedlings.

[0020] In the present application, the forest gaps of different area scales are classified by constructing dumbbell type and torch type configuration units, and different numbers of random supplement structure units are supplemented by using random configuration method, which significantly improves the stability and ecological diversity of the forest. The present application simulates the random structure of the distribution of trees in well-developed natural forests, constructs a random structure, and provides a long-term stable microenvironment for trees, thereby maintaining the overall health and stability of the stand, accelerating the natural succession of forest structure, and promoting the rapid formation of mixed forests of multiple tree species. In addition, by standardizing the planting and management of seedlings, reasonably selecting supplement tree species according to the management target, and specifying the planting time, the survival rate and growth quality of seedlings are further improved. This method not only improves the afforestation efficiency, but also helps to form a healthy and stable forest ecosystem, enhances the resistance of the forest to natural disasters and human disturbances, and thus provides an innovative technical means for realizing the sustainable management and ecological protection of forest resources. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is a flow chart of the random configuration afforestation method for repairing the vertical fault of the stand in an embodiment of the present application;

[0023] Figure 2 is a structure schematic diagram of the dumbbell type configuration unit in an embodiment of the present application;

[0024] Figure 3 is a structure schematic diagram of the torch type configuration unit in an embodiment of the present application;

[0025] Figure 4 is a structure schematic diagram of the random configuration afforestation system for repairing the vertical fault of the stand in an embodiment of the present application.

[0026] The reference signs in the description are as follows:

[0027] 1 - first supplementary planting point, 2 - second supplementary planting point, 3 - third supplementary planting point, 4 - fourth supplementary planting point, 5 - fifth supplementary planting point, 6 - sixth supplementary planting point, 7 - seventh supplementary planting point, 8 - eighth supplementary planting point. DETAILED DESCRIPTION

[0028] 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. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0029] Existing research shows that the distribution pattern of healthy and stable natural forest trees is random distribution, and random structure is the cornerstone of forest. The more random structures (also referred to as random supplementary planting structure units hereinafter), the more stable the forest. The random distribution of artificial afforestation in the prior art has some problems: first, the traditional artificial afforestation adopts regular planting method, and the formed forest is mostly in a uniform distribution pattern, resulting in single forest structure, single-age single layer, and poor stability. When the present application repairs the fault of such artificial forest, the structure characteristics of natural forest are imitated, random structures are artificially constructed during under-forest planting, the number of random structures in the stand is increased, the regeneration layer is in a stable random distribution pattern, so as to promote the artificial forest to form a multi-layer forest and improve the stability of the forest. Second, natural forest afforestation under the canopy has certain randomness, and random structures are gradually formed through the growth and competition of trees, which requires a long time. The present application imitates the structure characteristics of natural forest to construct random structures under the natural forest gap, on the one hand, the random structures are formed from the beginning of afforestation, which provides a long-term stable microenvironment for the trees and is beneficial to form a healthy and stable regeneration layer; on the other hand, different tree species are planted in the random structures, which can quickly promote the formation of a multi-species mixed forest and is beneficial to form a healthy and stable forest. Specifically, the afforestation method of random configuration of stand vertical fault repair is realized.

[0030] In an embodiment, as shown in Figure 1 , an afforestation method of random configuration of stand vertical fault repair is provided, which comprises the following steps:

[0031] S1, in the repair of stand vertical fault, a random supplementary planting structure unit is constructed, and the random supplementary planting structure unit comprises a dumbbell type configuration unit and a torch type configuration unit.

[0032] In an embodiment, the dumbbell type configuration unit and the torch type configuration unit in the step S1 mainly comprise:

[0033] The dumbbell-shaped configuration unit is a center young seedling i as a center point, two opposite directions of the center young seedling i are respectively arranged with two supplementary planting points, which are a first supplementary planting point 1, a second supplementary planting point 2, a third supplementary planting point 3 and a fourth supplementary planting point 4; the first supplementary planting point 1 and the center point are a first connecting line, the second supplementary planting point 2 and the center point are a second connecting line, a preset included angle between the first connecting line and the second connecting line is α; the third supplementary planting point 3 and the center point are a third connecting line, the fourth supplementary planting point 4 and the center point are a fourth connecting line, a preset included angle between the third connecting line and the fourth connecting line is β; a distance between each supplementary planting point is r, wherein 60°≤α=β≤72°.

[0034] The torch-shaped configuration unit is a center young seedling i as a center point, two opposite directions of the center young seedling i are respectively arranged with three supplementary planting points and one supplementary planting point, which are a fifth supplementary planting point 5, a sixth supplementary planting point 6, a seventh supplementary planting point 7 and an eighth supplementary planting point 8; the fifth supplementary planting point 5 and the center point are a fifth connecting line, the sixth supplementary planting point 6 and the center point are a sixth connecting line, a preset included angle between the fifth connecting line and the sixth connecting line is α; the seventh supplementary planting point 7 and the center point are a seventh connecting line, the eighth supplementary planting point 8 and the center point are an eighth connecting line, a preset included angle between the seventh connecting line and the eighth connecting line is β; a distance between each supplementary planting point is r, wherein 120°≤α+β≤144°.

[0035] A distance between each supplementary planting point is r, a preset nutrient space area occupied by each supplementary planting point is S, S=πr 2 That is, the nutrient space area S occupied by each structure is between 3.14 square meters to 7.06 square meters when 1.0m≤r≤1.5m according to different distances between the seedlings.

[0036] S2, the forest gaps are divided into levels according to the size of the area, and different numbers of the random supplementary planting structure units are supplemented in the random configuration mode for different levels of the forest gaps.

[0037] In an embodiment, the step S2 comprises:

[0038] S201, the forest gaps with an area of 1-10m 2 are divided into small-scale forest gaps, the forest gaps with an area of 10-50m 2 are divided into medium-scale forest gaps, and the forest gaps with an area of ≥50m 2 are divided into large-scale forest gaps. The forest gap areas are classified so as to take different supplementary planting strategies according to different areas of the forest gaps, the supplementary planting scheme can be more targeted designed, and the efficiency and effect of the supplementary planting are improved.

[0039] S202, the forest gaps with an area of 1-10m 2 are divided into small-scale forest gaps, the forest gaps with an area of 10-50m 2 are divided into medium-scale forest gaps, and the forest gaps with an area of ≥50m 2 are divided into large-scale forest gaps. The forest gap areas are classified so as to take different supplementary planting strategies according to different areas of the forest gaps, the supplementary planting scheme can be more targeted designed, and the efficiency and effect of the supplementary planting are improved.2 At that time, one of the aforementioned random replanting structural units is configured. This random replanting structural unit is either a dumbbell-shaped configuration unit or a torch-shaped configuration unit. That is, one seedling is first replanted with the central seedling i as the center point, and then the remaining four seedlings are replanted at a distance of r = 1.5m, following the layout of the dumbbell-shaped configuration unit / torch-shaped configuration unit. Within a range of 1 to 10m... 2 By configuring one random replanting structural unit in the forest window, the limited space can be optimized, while ensuring that the replanted seedlings can form a stable structural unit, thus promoting the natural succession and stability of the forest.

[0040] S203, in forest gaps with an area of ​​10–20 m² 2 At that time, two random replanting structural units are configured, namely the dumbbell-shaped configuration unit and the torch-shaped configuration unit; the spacing between seedlings at adjacent replanting points varies according to the area of ​​the forest window, that is, the larger the forest window area, the larger the spacing, and the spacing is equal to r, and r satisfies 1.0m ≤ r ≤ 1.5m. Within 10-20m... 2 By configuring two randomly replanted structural units in the forest gap and adjusting the spacing between seedlings according to the forest gap area, space can be utilized more rationally, while ensuring that the replanted seedlings can form stable structural units, which helps to accelerate the succession of forest structure and improve stability.

[0041] S204, The distance between the center points of the two randomly replanted structural units varies with the slope:

[0042] When the slope is 5°, the distance between the center points of the two randomly replanted structural units is 2m.

[0043] When the slope is between 5° and 15°, the distance between the center points of the two randomly replanted structural units is increased by 10% from the original distance.

[0044] When the slope is greater than 15°, the distance between the center points of the two randomly replanted structural units is increased by 20% from the original distance. By adjusting the center point distance, the stability and growth conditions of the replanted structural units under different slope conditions can be ensured, thereby improving the success rate of replanting and the overall stability of the forest. Especially under steep slopes, increasing the center point distance can reduce competition among seedlings and improve the survival rate. The purpose of steps S201-S204 is to enable the replanted seedlings to form stable random structural units through scientific design and adjustment, accelerating the succession of forest structure and enhancing forest stability. This method considers not only the size of forest gaps but also the distribution pattern of trees, thereby improving the scientific nature and effectiveness of replanting. In this way, the random structure of well-developed natural forest tree distribution can be better simulated, promoting the healthy and stable development of the forest.

[0045] Understandably, compared with the prior art, the present application determines the number of seedling re-planting according to the size of forest gap and stand density, completely without considering the distribution pattern of trees, and the seedling planting has a certain randomness; based on the previous research foundation, that is, the random structure accounts for more than 50% of the stable natural forest in terms of quantity or cross-sectional area, which is the " cornerstone" of maintaining forest stability, therefore, when repairing the vertical fault of the forest, the scheme fully considers the distribution pattern of seedlings, promotes the future random distribution of seedlings into the forest layer, accelerates the succession of forest structure, and thus improves the stability of the forest.

[0046] S3, after determining the number of random re-planting structure units, selecting seedlings to be re-planted.

[0047] In an embodiment, the step S3 comprises:

[0048] Selecting 1st grade container seedlings, which usually have more developed root systems and more fibrous roots, which helps the seedlings to adapt to the new environment faster and improve the survival rate. The root system of container seedlings is developed, with many fibrous roots and uniform distribution, which helps the seedlings to better absorb water and nutrients, thus promoting their healthy growth.

[0049] Removing all weeds and debris at the re-planting points can reduce competition and provide more favorable growing conditions for the seedlings. Deep plowing the soil 20-30 cm helps to improve soil structure, increase soil aeration and drainage, and create better conditions for the growth of seedling roots.

[0050] S4, standardizing seedling planting and management.

[0051] In an embodiment, the step S4 comprises:

[0052] S401, after planting seedlings at all re-planting points, fill 1 / 3 of the soil to lift the seedlings and stretch the roots, which helps the roots to contact with the soil and promotes the development of the roots. Then, layering and compacting the soil helps to stabilize the seedlings and prevent them from tilting or lodging due to soil loosening. Filling the soil to make the root neck 3-5 cm higher than the ground surface helps to prevent water accumulation at the root of the seedlings and avoid root diseases, while being beneficial to the growth of the seedlings. If the seedlings to be re-planted are soil ball seedlings, the hole diameter is 40 cm larger than the diameter of the soil ball, and the depth is 1.5 times the height of the soil ball; which helps to protect the soil ball and reduce damage to the roots during transplantation.

[0053] S402, the newly re-planted seedlings are nurtured 2-3 times a year for 0-3 years after re-planting, and 1 time a year after the 4th year.

[0054] S5, according to the management target, reasonably selecting the re-planting species of the random re-planting structure unit.

[0055] In an embodiment, the step S5 comprises:

[0056] S501, for vertical fault repair or artificial renewal, the same tree species can be used in each random planting structure unit. A single tree species can quickly cover the stand fault area, helping to quickly restore the continuity and structure of the forest. In the short term, there is less competition between seedlings of the same species, which helps the seedlings to grow quickly.

[0057] S502, if the management goal is to cultivate mixed forests, different tree species are planted at the four adjacent planting points of the random planting structure unit. Planting different tree species at adjacent planting points of the random planting structure unit can increase the species diversity of the stand, mimic the diversity of natural forests, and help form a more healthy and stable forest ecosystem.

[0058] S503, configure tree species according to the degree of mixture, including weak mixture, moderate mixture and strong mixture. Configuring tree species according to the degree of mixture can flexibly control the composition and structure of mixed forests. By adjusting the degree of mixture, the competition relationship between different tree species can be optimized to promote efficient use of resources. Planting different tree species at the positions of adjacent trees of the random structure can effectively reduce the competition of the same species, and by controlling the mixing ratio, the growth efficiency of seedlings and the overall productivity of the forest can be improved.

[0059] Understandably, the prior art generally uses row mixing or block mixing when cultivating mixed forests, and still cannot reduce the competition of the same species when forming a stand. The present application plants different tree species at the positions of adjacent trees of the random structure when cultivating mixed forests, which can effectively reduce the competition of the same species of neighbors, and at the same time can control the mixing ratio through the value of the degree of mixture of the random structure. The above steps can improve the ecological stability, biodiversity and productivity of the forest by reasonably selecting and configuring the planting tree species. Compared with traditional row mixing or block mixing, this mixed method based on random structure can more effectively reduce the competition of the same species, and at the same time control the mixing ratio by adjusting the degree of mixture, so as to realize more scientific and efficient forest management.

[0060] S6, specify the time of afforestation to improve the survival rate of seedlings.

[0061] In an embodiment, the step S6 comprises:

[0062] Afforestation is carried out during the rainy season or before the rainy season; in southern areas, afforestation is carried out in March or September; in northern areas, afforestation is carried out from May to July. Step S6 helps to improve the survival rate of seedlings and the overall effect of the afforestation project by selecting the best planting time in southern and northern areas. This strategy takes into account the climate differences in different regions, ensuring that seedlings can grow in the most suitable environment.

[0063] It should be understood that the size of the serial number of each step in the above embodiment does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiment of the application.

[0064] In an embodiment, a silvicultural method system for vertical fault repair of random configuration of forest stand is provided, which corresponds to the silvicultural method for vertical fault repair of random configuration of forest stand in the above embodiment. As shown in the figure, the silvicultural method system for vertical fault repair of random configuration of forest stand comprises: Figure 4

[0065] A random re-planting structure unit construction module 100 is configured to construct a random re-planting structure unit in the vertical fault repair of forest stand, wherein the random re-planting structure unit comprises a dumbbell type configuration unit and a torch type configuration unit;

[0066] A forest gap area grade division module 200 is configured to divide the forest gap into grades according to the size of the area, and to supplement different numbers of the random re-planting structure unit in different grades of forest gap by using the random configuration method;

[0067] A seedling selection module 300 is configured to select seedlings to be re-planted after determining the number of the random re-planting structure unit;

[0068] A seedling planting and management specification module 400 is configured to specify seedling planting and management;

[0069] A tree species selection module 500 is configured to reasonably select the re-planting tree species of the random re-planting structure unit according to the management target;

[0070] A silvicultural time specification module 600 is configured to specify the time of planting silviculture to improve the survival rate of seedlings.

[0071] The specific limitations of the silvicultural system for vertical fault repair of random configuration of forest stand can be referred to the limitations of the silvicultural method for vertical fault repair of random configuration of forest stand in the above, which will not be repeated here.

[0072] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above-mentioned division of functional units and modules is exemplified, and in actual application, the above-mentioned functions can be completed by different functional units and modules according to needs, that is, the internal structure of the system is divided into different functional units or modules to complete all or part of the above-described functions.

[0073] ​The above-described embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A method of silvicultural reforestation of a random configuration of vertical fault repair of a stand, characterized in that, The method comprises the following steps: S1, in the vertical fault repair of the forest stand, a random reforestation structure unit is constructed, the random reforestation structure unit comprises a dumbbell type configuration unit and a torch type configuration unit; S2, the forest gaps are divided into different grades according to the size of the area, and different numbers of the random reforestation structure units are supplemented in the random configuration mode for different grades of the forest gaps; S3, after the number of the random reforestation structure units is determined, seedlings to be reforested are selected; S4, the seedling planting and management are standardized; S5, the reforestation tree species of the random reforestation structure unit is reasonably selected according to the management target; S6, the time of afforestation is specified, and the survival rate of the seedlings is improved.

2. The method of claim 1, wherein the method further comprises, The step S1 comprises: The dumbbell type configuration unit is that two reforestation points are respectively arranged in the opposite two directions of the center seedling i, which are respectively a first reforestation point (1), a second reforestation point (2), a third reforestation point (3) and a fourth reforestation point (4); the first reforestation point (1) and the center point are a first connecting line, the second reforestation point (2) and the center point are a second connecting line, the preset included angle between the first connecting line and the second connecting line is α; the third reforestation point (3) and the center point are a third connecting line, the fourth reforestation point (4) and the center point are a fourth connecting line, the preset included angle between the third connecting line and the fourth connecting line is β; the distance between each reforestation point is r, wherein 60°≤α=β≤72°; The torch type configuration unit is that three reforestation points and one reforestation point are respectively arranged in the opposite two directions of the center seedling i, which are respectively a fifth reforestation point (5), a sixth reforestation point (6), a seventh reforestation point (7) and an eighth reforestation point (8); the fifth reforestation point (5) and the center point are a fifth connecting line, the sixth reforestation point (6) and the center point are a sixth connecting line, the preset included angle between the fifth connecting line and the sixth connecting line is α; the seventh reforestation point (7) and the center point are a seventh connecting line, the eighth reforestation point (8) and the center point are an eighth connecting line, the preset included angle between the seventh connecting line and the eighth connecting line is β; the distance between each reforestation point is r, wherein 120°≤α+β≤144°; A distance between each of the re-planting points is r, and a preset nutrient space area occupied by each of the re-planting points is S, S=πr 2 .

3. The method of claim 2, wherein the method further comprises, The step S2 comprises: S201, areas with a size of 1-10m² 2 The forest gaps are divided into small-scale forest gaps, with an area of ​​10-50m². 2 Forest gaps are classified as medium-sized forest gaps, with an area ≥50m². 2 Forest gaps are classified as large-scale forest gaps; S202、in the forest gap area is 1~10m 2 When the forest gap area is 1~10m, one random complementary planting structure unit is configured, which is the dumbbell type configuration unit / the torch type configuration unit, that is, one seedling is first complementarily planted with the center young tree i as the center point, and then the remaining four seedlings are complementarily planted according to the layout of the dumbbell type configuration unit / the torch type configuration unit with r=1.5m. S203、in the forest gap area is 10~20m 2 When the forest gap area is 10~20m, two random complementary planting structure units are configured, the random complementary planting structure unit is the dumbbell type configuration unit / the torch type configuration unit; the interval distance between seedlings on adjacent complementary planting points changes according to the change of the area of the forest gap, that is, the larger the area of the forest gap, the larger the interval distance, the interval distance is equal to r, and r satisfies 1.0m≤r≤1.5m; S204, the distance between the center points of two random reforestation structure units changes with the size of the slope: When the slope is 5°, the distance between the center points of two random reforestation structure units is 2m; When the slope is 5°-15°, the distance between the center points of two random reforestation structure units increases by 10% on the basis of the original distance; When the slope is greater than 15°, the distance between the center points of two random reforestation structure units increases by 20% on the basis of the original distance.

4. The method of claim 3, wherein the method further comprises, The step S3 comprises: A first-level container seedling is selected, the root system of the container seedling is developed, the fibrous roots are many and uniformly distributed; All weeds and sundries at the reforestation points are removed, and the soil is deep ploughed to 20cm-30cm.

5. The method of claim 4, wherein the method further comprises, The step S4 comprises: S401, after planting seedlings in all re-planting points, first fill 1 / 3 soil to lift seedlings and stretch root system, then compact by layers, fill soil to make root neck 3-5 cm higher than ground surface; if the seedlings to be re-planted are seedlings with soil ball, the hole diameter is 40 cm larger than the diameter of the soil ball, and the depth is 1.5 times the height of the soil ball; S402, the newly re-planted seedlings are nursed 2-3 times per year in 0-3 years after re-planting, and nursed once per year after 4 years.

6. The method of claim 5, wherein the method further comprises, The step S5 comprises: S501, for vertical fault repair or artificial regeneration, the same tree species can be used in each random re-planting structure unit; S502, if the management goal is to cultivate mixed forest, different tree species are planted in 4 adjacent re-planting points of the random re-planting structure unit; S503, tree species configuration according to the degree of mixture, including weak mixture, moderate mixture and strong mixture.

7. The method of claim 6, wherein the method further comprises, The step S6 comprises: The planting is carried out in March or September in southern regions, and in May to July in northern regions.

8. A random configuration of a reforestation system for vertical fault repair of a stand, characterized in that, The step S7 comprises: A random re-planting structure unit construction module is configured to construct a random re-planting structure unit in vertical fault repair of a forest stand, wherein the random re-planting structure unit comprises a dumbbell type configuration unit and a torch type configuration unit; A forest window area grade division module is configured to divide grades according to the size of the area of the forest window, and different numbers of the random re-planting structure unit are re-planted in the forest window in a random configuration manner according to different grades of the forest window; A seedling selection module is configured to select seedlings to be re-planted after determining the number of the random re-planting structure unit; A seedling planting and management specification module is configured to specify seedling planting and management; A tree species selection module is configured to reasonably select re-planting tree species of the random re-planting structure unit according to a management goal; A afforestation time specification module is configured to specify afforestation time to improve seedling survival rate.

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