A method and device for replanting and repairing degraded masson pine forests

Abstract

The present invention provides a method and device for replanting and repairing degraded masson pine forests, belonging to the technical field of forest resource management. A method for replanting and repairing degraded masson pine forests according to the present invention establishes a forest resource map, details regional resource information and tree grades, directly screens each logging area in stages based on the regional resource information and tree grades, rather than only considering the infected area, can more reasonably and gradually determine the target logging area, and in combination with the forest resource map, accurately determine the replanting area, maximize the utilization of the vacant land resources after logging, accelerate the regeneration of forest resources, improve the utilization efficiency of forest land resources, ensure the rationality of the logging area and distance, and rationally centralize the distribution of the logging and replanting areas, which can reduce the logging and replanting frequency, difficulty and cost, and improve the operation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of forest resource management, and particularly to a method and device for replanting and repairing degraded Masson pine forests. Background Art

[0002] Pine wilt disease is a fatal tree disease caused by pine wood nematodes, which seriously affects the concentrated distribution areas of artificial coniferous forests mainly composed of Masson pine. The spread of this pest and disease is rapid, resulting in the death of a large number of pine trees, causing major damage to the forest ecosystem, not only affecting the forest quality and ecological security of the region, but also having a negative impact on economic development and farmers' income increase.

[0003] In order to prevent and control pine wilt disease, huge amounts of funds need to be invested in monitoring, prevention and control, and the treatment of diseased trees. To address this situation, high-quality native tree species can be selected for replanting and repairing degraded forests to improve the forest health level of the region, enhance forest quality, and solve the problem that the pine wood resources in the epidemic area cannot be utilized normally. Specific measures include felling and scientifically treating the infected pine trees, clearing the ground to prepare for replanting tree species, and then replanting other tree species according to the plan to ensure reasonable tree species configuration and planting density. At the same time, necessary soil improvement and planting technical measures are carried out to ensure the survival rate of tree species. After replanting, it is necessary to regularly monitor the growth of tree species and the occurrence of pests and diseases, take timely prevention and control measures, and carry out timely tending management, such as pruning, fertilizing, weeding, etc., to promote the healthy growth of tree species. Through these measures, the ecological function and economic value of the forest can be effectively improved, the harm of pine wilt disease can be reduced, and the sustainable utilization of regional forest resources can be promoted.

[0004] In the prior art, it is usually artificial to identify the epidemic areas affected by pine wood nematodes. By demarcating the epidemic areas and isolation belts, fell the infected and potentially infected trees, and then replant relevant trees to achieve the resource repair of forest land. However, in this process, due to the time and effort required for directly identifying the trees affected by pine wood nematodes widely distributed, and these infected areas are small and scattered, it is not conducive to the implementation of efficient felling and replanting measures. Summary of the Invention

[0005] The present invention provides a method and device for replanting and repairing degraded Masson pine forests to solve the defect of low efficiency of felling and replanting of degraded Masson pine forests in the prior art and achieve the effect of improving the felling and replanting efficiency.

[0006] The present invention provides a method for replanting and repairing degraded Masson pine forests, including:

[0007] Determine the forest resource map corresponding to the degraded Masson pine forest;

[0008] Based on the forest resource map, determine the first logging area for logging; the first logging area includes the selective logging area and the target forest gap forest belt area; the selective logging area is determined based on the tree grade, and the target forest gap forest belt area is determined based on the regional resource information;

[0009] Determine the area and location of each first logging area, and conduct buffer analysis on each first logging area to obtain the corresponding buffer area for each first logging area. Analyze the buffer areas corresponding to each first logging area through the adjacency matrix algorithm, and screen out the second logging area from each first logging area; the area of the second logging area is greater than the area threshold and the distance from any first logging area is greater than the distance threshold;

[0010] Based on the tree grade and regional resource information of the trees in the area connected to the second logging area, screen out the third logging area for logging from the buffer area connected to the second logging area;

[0011] Based on at least one of the first logging area, the second logging area, and the third logging area, determine the target logging area for actual logging, and combine with the forest resource map to determine the replanting area;

[0012] Based on the regional resource information of the replanting area, determine the replanting measures for the replanting area.

[0013] According to a method for replanting and restoring degraded masson pine forests provided by the present invention, the buffer analysis is performed on each first logging area to obtain the corresponding buffer area for each first logging area, and the target plot is screened out from the buffer areas corresponding to each first logging area based on the adjacency matrix algorithm, and the first logging area adjacent to the target plot is determined as the second logging area, including:

[0014] Perform buffer analysis on each first logging area based on the distance threshold to obtain the corresponding buffer area for each first logging area;

[0015] Analyze the buffer areas corresponding to each first logging area within the distance threshold based on the adjacency matrix algorithm, and determine the first logging area whose corresponding buffer area within the distance threshold does not overlap with any first logging area and whose area is greater than the area threshold as the second logging area.

[0016] According to a method for replanting and restoring degraded masson pine forests provided by the present invention, based on the tree grade and regional resource information of the trees in the area connected to the second logging area, screen out the third logging area for logging from the buffer area connected to the second logging area, including:

[0017] Based on the tree grades of the trees in the buffer area connected to the second felling area, each alternative area is screened from the buffer area connected to the second felling area;

[0018] Based on the regional resource information of each alternative area, the third felling area for felling is screened from each alternative area.

[0019] According to a method for replanting and restoring degraded masson pine forests provided by the present invention, the step of screening the third felling area for felling from each alternative area based on the regional resource information of each alternative area includes:

[0020] Each item in the regional resource information of each alternative area is respectively evaluated to obtain a regional characteristic value, and each item is assigned a weight value;

[0021] Based on the regional characteristic value and the weight value of each item in the regional resource information of each alternative area, the total regional characteristic value of each alternative area is respectively obtained;

[0022] Based on the total regional characteristic value of each alternative area, the third felling area for felling is screened from each alternative area.

[0023] According to a method for replanting and restoring degraded masson pine forests provided by the present invention, the step of determining the target felling area for actual felling based on at least one of the first felling area, the second felling area, and the third felling area, and determining the replanting area in combination with the forest resource map includes:

[0024] Based on at least one of the first felling area, the second felling area, and the third felling area, the target felling area is determined;

[0025] Based on the forest resource map, forest gaps with a canopy density less than the canopy density threshold are screened;

[0026] Based on the forest gaps and the target felling area, the replanting area is determined.

[0027] According to a method for replanting and restoring degraded masson pine forests provided by the present invention, the step of determining the target felling area based on at least one of the first felling area, the second felling area, and the third felling area includes:

[0028] The area in the first felling area except the second felling area, the second felling area, and the third felling area are determined as the target felling area.

[0029] According to a method for replanting and restoring degraded masson pine forests provided by the present invention, the forest gap and forest belt area is determined by the following method:

[0030] Determine alternative forest gap and forest belt areas based on the density of trees, the height of trees, the canopy density of trees, and the terrain in different regions;

[0031] Determine the target forest gap and forest belt area from each alternative forest gap and forest belt area based on the preset area condition and density condition of the forest gap and forest belt; the area condition is used to limit the area of a single forest gap and forest belt; the density condition is used to limit the total number of forest gaps and the total area of the forest belt.

[0032] The present invention also provides a replanting and restoration device for degraded masson pine forests, including:

[0033] A resource loading module, used to determine the forest resource map corresponding to the degraded masson pine forest;

[0034] A first processing module, used to determine a first logging area for logging based on the forest resource map; the first logging area includes a general logging area and a target forest gap and forest belt area; the general logging area is determined based on the tree grade, and the target forest gap and forest belt area is determined based on the regional resource information;

[0035] A second processing module, used to determine the area and location of each first logging area, perform buffer analysis on each first logging area to obtain the buffer area corresponding to each first logging area, and analyze the buffer area corresponding to each first logging area through the adjacency matrix algorithm to screen out a second logging area from each first logging area; the area of the second logging area is greater than the area threshold and the distance from any first logging area is greater than the distance threshold;

[0036] A third processing module, used to screen out a third logging area for logging from the areas connected to the second logging area based on the tree grade and regional resource information of the trees in the buffer area connected to the second logging area;

[0037] A fourth processing module, used to determine the target logging area for actual logging based on at least one of the first logging area, the second logging area, and the third logging area, and determine the replanting area in combination with the forest resource map;

[0038] A fifth processing module, used to determine the replanting measures for the replanting area based on the regional resource information of the replanting area.

[0039] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the program, it implements the replanting and restoration method for degraded masson pine forests as described in any one of the above.

[0040] The present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the method for replanting and restoring degraded masson pine forests as described in any one of the above.

[0041] The present invention also provides a computer program product, including a computer program. When the computer program is executed by a processor, it implements the method for replanting and restoring degraded masson pine forests as described in any one of the above.

[0042] A method and device for replanting and restoring degraded masson pine forests provided by the present invention, by establishing a forest resource map, recording regional resource information and tree grades in detail, directly screening each logging area in stages according to the regional resource information and tree grades, rather than only considering the infected area, can more reasonably and gradually determine the target logging area, and in combination with the forest resource map, accurately determine the replanting area, maximize the utilization of the vacant land resources after logging, accelerate the renewal of forest resources, improve the utilization efficiency of forest land resources, ensure the rationality of the logging area and distance, and reasonably centralize the distribution of the logging and replanting areas, which can reduce the logging and replanting frequency, difficulty and cost, and improve the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0044] Figure 1 is one of the flow diagrams of a method for replanting and restoring degraded masson pine forests provided by the present invention;

[0045] Figure 2 is another flow diagram of a method for replanting and restoring degraded masson pine forests provided by the present invention;

[0046] Figure 3 is the structural diagram of a device for replanting and restoring degraded masson pine forests provided by the present invention;

[0047] Figure 4 is the structural diagram of an electronic device provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0049] The following combines Figures 1-4 to describe a method and device for replanting and restoring degraded masson pine forests of the present invention.

[0050] As Figure 1 shown, a method for replanting and restoring degraded masson pine forests provided by an embodiment of the present invention mainly includes step 110, step 120, step 130, step 140, step 150 and step 160.

[0051] Step 110, determining the forest resource map corresponding to the degraded masson pine forest.

[0052] The forest resource map includes regional resource information and tree grades. The regional resource information includes the types of trees, the density of trees, the height of trees, the canopy density, the soil layer conditions, and the terrain in different regions. The tree grades are determined based on the Kraft tree growth grading method.

[0053] It can be understood that the area of the degraded masson pine forest to be studied can be determined first, that is, the area of the degraded masson pine forest for which the forest resource map needs to be made.

[0054] The area of the degraded masson pine forest can be investigated by selecting sample plots through on-site surveys. In the selected sample plots, record the types, density and height of the trees in each sample plot. Tools such as a dendrometer, total station, and laser rangefinder can be used for measurement.

[0055] The canopy density of the forest can be obtained through on-site observation, the canopy projection method, or by taking canopy photos with a fish-eye lens and analyzing and calculating. The soil layer conditions can be obtained by collecting soil samples and analyzing to obtain the soil layer thickness, texture, fertility, etc. The terrain can be measured using a GPS device to measure the terrain elevation, and detailed terrain information can be obtained by combining digital elevation model (DEM) data.

[0056] Of course, the forest resource information of the degraded masson pine forest area can also be obtained and processed through remote sensing data.

[0057] For example, satellite images or aerial photos can be obtained to identify the canopy cover and terrain features. Remote sensing image processing software (such as ENVI, ERDAS IMAGINE) can be used for preprocessing, including geometric correction, atmospheric correction, and image mosaicking.

[0058] On this basis, a forest resources map can be established through the GIS platform. A project can be created in GIS software (such as ArcGIS, QGIS) to establish a database for storing and managing various data.

[0059] It can be understood that on-site survey data, remote sensing images, and topographic data can be imported into the GIS platform, and spatial registration and projection transformation are performed on data from different sources to ensure their matching under the same coordinate system.

[0060] Regarding tree species, density, and height, an attribute table can be established in GIS to record the tree species, density, and height of each area.

[0061] Regarding the canopy density of trees, based on remote sensing images and on-site data, classification and segmentation techniques can be used to calculate the canopy density of each area.

[0062] Regarding the soil layer conditions and terrain, soil and topographic data can be visualized and displayed through interpolation and hierarchical rendering.

[0063] The Kraft tree classification method is used for tree class rating. Based on the Kraft tree classification method, the trees in the on-site survey data can be classified into Class I (dominant trees), Class II (sub-dominant trees), Class III (medium trees), Class IV (suppressed trees), and Class V (dying trees).

[0064] In the GIS platform, corresponding grades can be assigned to the forest trees in each area, and different colors or symbols are used to represent each grade.

[0065] Furthermore, using the mapping function of the GIS platform, all data can be integrated onto a forest resources map, including regional resource information (tree species, density, height, canopy density, soil layer conditions, and terrain) and tree grades.

[0066] In this embodiment, by using surveying and mapping techniques and the GIS platform, a detailed forest resources map of masson pine degraded forests can be established, thus providing strong support for forestry management and decision-making.

[0067] Step 120: Based on the forest resources map, determine the first felling area for logging.

[0068] The first felling area includes the general felling area and the target forest gap forest belt area; the general felling area is determined based on the tree grades, and the target forest gap forest belt area is determined based on the regional resource information.

[0069] Using the tree grade data on the forest resources map, the tree grade conditions of each area can be evaluated, and among them, Class V trees, Class IV trees, and some Class III trees can be given priority for logging.

[0070] For example, areas with lower forest grades (such as grade V and grade IV woods) can be marked as general cutting areas. Avoid areas with grade I and grade II woods (except for individual grade II pine trees allowed to be cut in special circumstances). According to the general cutting principle, ensure that the selection of general cutting areas meets the requirements of ecological sustainability and avoid damaging the forest ecological balance.

[0071] On this basis, according to the regional resource information on the forest resource map, evaluate the resource distribution of each area.

[0072] Areas with gentle terrain, sparse tree distribution, and poor growth can be selected as the cutting areas for forest gaps and forest belts, and avoid steep slopes (with a slope of more than 36°), ecologically fragile areas, and areas prone to soil erosion.

[0073] Appropriately prune the retained trees around the forest gaps to create a suitable space for replanting broad-leaved tree species.

[0074] For the selection of forest belts, plots with relatively high canopy density of forest stands can be selected, where the growth of trees is generally poor and the density is relatively low, and avoid grade I and grade II woods. When opening a belt, try to choose gentle areas or terraces distributed along the contour line.

[0075] Similarly, appropriately prune the retained trees at the edge of the forest belt to create a suitable space for replanting broad-leaved tree species.

[0076] The data of the general cutting areas and the target forest gap and forest belt areas can be integrated onto a single map to form the first cutting area. Then, conduct on-site verification of the first cutting area to ensure that the selected areas meet the actual situation and cutting requirements.

[0077] In some embodiments, the forest gap and forest belt areas are determined in the following manner.

[0078] First, based on the density, height, canopy density of trees, and terrain in different areas, determine the alternative forest gap and forest belt areas. On this basis, further determine the target forest gap and forest belt areas from each alternative forest gap and forest belt area based on the preset area conditions and density conditions of the forest gaps and forest belts; the area conditions are used to limit the area of a single forest gap and forest belt; the density conditions are used to limit the total number of forest gaps and the total area of forest belts.

[0079] Specifically, according to the density, height, and canopy density of trees, select areas with lower density, shorter height, and lower canopy density as the preliminary alternative areas. Using the terrain data, select areas with relatively gentle terrain and suitable soil conditions.

[0080] The area conditions and density conditions can be set according to the climate conditions and water and soil conditions of the region.

[0081] For example, the area condition of forest gaps can be that the area projection of a single forest gap should be between 60 square meters and 80 square meters. The area condition of forest belts can be that the width of newly opened forest belts is generally 10 meters to 15 meters, the length does not exceed 45 meters, the projected area of a single forest belt does not exceed 1 mu, and the total area does not exceed 10% of the plot area.

[0082] The density condition of forest gaps can be that the number of newly opened forest gaps per mu of forest land does not exceed 1. The density condition of forest belts can be that an appropriate spacing is maintained between multiple forest belts to ensure that the total area of forest belts does not exceed the specified ratio.

[0083] According to the initially screened alternative forest gap and forest belt areas, apply the forest gap area condition to select the areas that meet the requirements of the area of a single forest gap. Then apply the forest gap density condition to ensure that the number of newly opened forest gaps per mu of forest land does not exceed 1, and avoid over-logging.

[0084] Similarly, according to the initially screened alternative forest gap and forest belt areas, apply the forest belt area condition to select the areas that meet the requirements of the width and length of a single forest belt. Then apply the forest belt density condition to ensure that the total area of forest belts does not exceed 10% of the plot area and maintain an appropriate spacing between forest belts.

[0085] Step 130: Determine the area and location of each first cutting area, perform buffer analysis on each first cutting area to obtain the corresponding buffer area for each first cutting area, and analyze the corresponding buffer areas of each first cutting area through the adjacency matrix algorithm to screen out the second cutting areas from each first cutting area.

[0086] The area of the second cutting area is greater than the area threshold and the distance from any first cutting area is greater than the distance threshold.

[0087] In this embodiment, according to the forest resource map and the first cutting areas determined in the foregoing steps, the specific location and area data of each cutting area can be obtained.

[0088] Area calculation can use the measurement tool of the GIS platform to calculate the area of each first cutting area. Record the calculation results in the attribute table to ensure that each cutting area has clear area data, and mark the location of each first cutting area on the GIS platform, represented by coordinate points or polygons, to ensure the accuracy of the location data of each area.

[0089] On this basis, the second cutting areas that meet the conditions can be further screened.

[0090] First, it is necessary to define the screening conditions, that is, to set the minimum area threshold for the second logging area. The area threshold can be set to a specific value to ensure that the second logging area has sufficient scale, and set the minimum distance threshold between the second logging area and any one of the first logging areas. The distance threshold can be set to a specific value to ensure that there is sufficient spacing between the logging areas, and it belongs to the area with a relatively long logging route that can be logged.

[0091] In some embodiments, buffer analysis is performed on each first logging area to obtain the buffer area corresponding to each first logging area, and based on the adjacency matrix algorithm, target plots are screened from the buffer areas corresponding to each first logging area, and the first logging area adjacent to the target plot is determined as the second logging area, including: performing buffer analysis on each first logging area based on the distance threshold to obtain the buffer area corresponding to each first logging area; analyzing the buffer areas corresponding to each first logging area within the distance threshold based on the adjacency matrix algorithm, and determining the first logging area whose corresponding buffer area within the distance threshold does not overlap with any one of the first logging areas and has an area larger than the area threshold as the second logging area.

[0092] Buffer analysis can be performed on each first logging area through the buffer tool in GIS software. The distance threshold of the buffer can be set to generate the buffer area of each first logging area. The size of the buffer area can be set according to the working requirements of logging. The size of each buffer area can be a size conducive to single logging. For example, a single logging buffer area can be set to an area similar to the area threshold, and there are multiple continuous buffer areas around each first logging area surrounding the first logging area. The area of each buffer area can be calculated using the spatial analysis tool of GIS software.

[0093] On this basis, an adjacency matrix can be established. The adjacency relationship between each buffer area and other buffer areas can be calculated to establish an adjacency matrix. The elements in the matrix indicate whether two buffer areas are adjacent.

[0094] Based on the adjacency matrix algorithm, analyze the buffer areas corresponding to each first logging area within the distance threshold, and determine the first logging area whose corresponding buffer area within the distance threshold does not overlap with any one of the first logging areas and has an area larger than the area threshold as the second logging area. Those areas that overlap with the current first logging area can be excluded from these buffer areas, and thus the first logging areas that are relatively remote in location and more isolated relative to other first logging areas can be obtained.

[0095] On this basis, further screen out the first logging areas with an area larger than the set threshold according to the area threshold, and then use them as the second logging areas.

[0096] All eligible second logging areas can be integrated onto a new map to form a second logging area layer, for example, by using the layer management and output functions of GIS software.

[0097] In this embodiment, areas with an area larger than the area threshold are screened out from all the first logging areas, which can be achieved by using the query and filtering functions of GIS software. For each preliminarily screened area, the distances to all other first logging areas are calculated. Spatial analysis tools in GIS software (such as buffer analysis and distance calculation tools) can be used for distance measurement. From the preliminarily screened areas, areas with a distance greater than the distance threshold to any one of the first logging areas are screened out. Finally, the eligible second logging areas are integrated onto a new map to form a second logging area layer.

[0098] The screened second logging areas can be verified on-site to ensure that the selected areas meet the actual situation and logging requirements.

[0099] In this embodiment, by setting the area and distance thresholds, logging areas with a large enough area can be screened out. At the same time, a relatively large distance from other first logging areas indicates that the logging route in the current area is relatively complex, and there will be greater logging difficulty and costs. On this basis, by determining other harvestable areas around the current area, as many harvestable trees as possible can be logged during this logging operation, accelerating the replacement of forest resources and saving logging and subsequent replanting costs.

[0100] Step 140: Based on the tree grades and regional resource information of the trees in the areas connected to the second logging area, the third logging area for logging is screened out from the areas connected to the second logging area.

[0101] It can be understood that adjacent areas meeting the regional resource conditions (such as tree density, tree height, canopy density, and terrain) can be screened out first, and then further screened according to the tree grade conditions (such as preferentially logging grade V and grade IV trees) in these areas to finally determine the third logging area for logging.

[0102] In some embodiments, adjacent areas can also be screened out first according to the tree grade conditions, and then further screened according to the regional resource conditions to further determine the third logging area for logging.

[0103] In some embodiments, as Figure 2 shown, step 140: Based on the tree grades and regional resource information of the trees in the areas connected to the second logging area, the third logging area for logging is screened out from the buffer areas connected to the second logging area, which may include step 141 and step 142.

[0104] Step 141: Screen each alternative area from the buffer area connected to the second logging area based on the forest tree grades of the trees in the buffer area.

[0105] Step 142: Screen the third logging area for logging from each alternative area based on the regional resource information of each alternative area.

[0106] Specifically, the detailed regional resource information of each alternative area can be obtained, including the density of the trees, the height of the trees, the canopy density, the soil layer condition, and the terrain.

[0107] On this basis, screening conditions are defined, that is, preset regional resource conditions are set. For example, areas with relatively low tree density, moderate tree height, moderate canopy density, gentle terrain, and good soil layer conditions can be selected.

[0108] On the GIS platform, identify the area connected to the second logging area through the spatial analysis tool. Import the forest tree grade information and regional resource information into the GIS platform, and use the query function of the GIS platform to screen out the alternative areas according to the forest tree grade conditions for priority logging.

[0109] In some embodiments, screening the third logging area for logging from each alternative area based on the regional resource information of each alternative area includes the following process.

[0110] Each item in the regional resource information of each alternative area can be evaluated to obtain a regional characteristic value, and each item is assigned a weight value. On this basis, the total regional characteristic value of each alternative area can be obtained respectively based on the regional characteristic value and weight value of each item in the regional resource information of each alternative area. Finally, the third logging area for logging is screened from each alternative area based on the total regional characteristic value of each alternative area.

[0111] The evaluation criteria for the regional characteristic value can be formulated according to the importance of each item of resource information. For example, the lower the tree density, the higher the regional characteristic value, and the flatter the terrain, the higher the regional characteristic value.

[0112] Different weight values are assigned according to the influence of each item of resource information on the logging decision. For example, the weight of the terrain may be higher than the weight of the tree species.

[0113] Evaluate each item of resource information for each alternative area to obtain the regional characteristic value of each item, and then assign the corresponding weight value to each item for scoring. Calculate the regional characteristic value and weight value of each item of resource information for each alternative area to obtain the comprehensive total regional characteristic value.

[0114] On this basis, according to the total regional characteristic values of each alternative area, the third felling area that meets the preset conditions is selected from them. The area with a higher total regional characteristic value is preferentially selected as the third felling area. By quantifying scores and weights, each alternative area is scientifically evaluated to ensure the rationality and accuracy of the felling area.

[0115] In this embodiment, by screening out the areas connected to the second felling area and suitable for felling, more trees can be felled at one time, reducing the frequency of multiple felling. At the same time, the felling area and felling route can be optimized, the scheduling frequency of machinery and equipment and manpower can be reduced, and the felling and transportation costs can be reduced. At the same time, multiple interferences to the forest land can also be reduced, protecting the forest land structure.

[0116] In this process, through centralized felling, the replacement and renewal of degraded trees can be accelerated. Through the centralized felling area, felling and subsequent replanting work can be carried out more efficiently, reducing the frequency of scattered felling and replanting, and improving the efficiency of felling and replanting.

[0117] Step 150, based on at least one of the first felling area, the second felling area, and the third felling area, determine the target felling area for actual felling, and in combination with the forest resource map, determine the replanting area.

[0118] One or more areas can be selected from the first felling area, the second felling area, and the third felling area as the target felling area for actual felling in combination with the actual needs and felling objectives. Then, by using the regional resource information and tree grades on the forest resource map, analyze the surrounding areas of the target felling area to determine the areas that need to be replanted.

[0119] In some embodiments, based on at least one of the first felling area, the second felling area, and the third felling area, determine the target felling area for actual felling, and in combination with the forest resource map, determine the replanting area, including: based on at least one of the first felling area, the second felling area, and the third felling area, determine the target felling area; based on the forest resource map, screen out the forest gaps with a canopy density less than the canopy density threshold; based on the forest gaps and the target felling area, determine the replanting area.

[0120] One or more areas can be selected from the first felling area, the second felling area, and the third felling area as the target felling area for actual felling in combination with the actual needs and felling objectives.

[0121] In the forest resource map, areas with a canopy density less than the preset canopy density threshold can be screened out as forest gaps. These gaps can provide space for replanting, ensuring that newly planted trees have sufficient sunlight and growth space.

[0122] The target logging area and the selected forest clearings can be combined to determine the final reforestation area. For example, forest clearings around the target logging area can be selected for reforestation.

[0123] Specifically, the data of the first logging area, the second logging area, and the third logging area can be integrated into the GIS platform.

[0124] The canopy density threshold can be set according to the actual situation, for example, set to 0.4. In the GIS platform, areas with a canopy density less than the set threshold are screened out, and these areas can be used as forest clearings for replanting new trees.

[0125] In the GIS platform, an overlay analysis is performed on the target logging area and the selected forest clearings to determine the final reforestation area. For example, forest clearings around the target logging area are selected, or suitable clearings are selected within the target logging area for reforestation. Through scientific screening and evaluation, ensure that the selection of the logging area and the reforestation area is scientific and reasonable, maximizing the resource utilization efficiency.

[0126] In some embodiments, based on at least one of the first logging area, the second logging area, and the third logging area, determining the target logging area includes: determining the area in the first logging area except the second logging area, the second logging area, and the third logging area as the target logging area.

[0127] Determining the area in the first logging area except the second logging area, the second logging area, and the third logging area as the target logging area can ensure that overlapping calculations are avoided when determining the target logging area, optimizing the logging plan.

[0128] Merging the above areas to form a complete and coherent target logging area can ensure the efficiency and coherence of the logging operation, reduce scattered operations, lower the logging cost and difficulty, and improve the overall logging benefit.

[0129] Step 160, based on the regional resource information of the reforestation area, determine the reforestation measures for the reforestation area.

[0130] It can be understood that it is necessary to collect and analyze information such as the soil, terrain, and climate of the reforestation area, select suitable tree species and planting methods, formulate detailed planting plans and post-planting maintenance management measures, and establish a monitoring and evaluation mechanism to ensure the survival rate and healthy growth of the newly planted trees, and promote ecological restoration and the sustainable development of forest resources.

[0131] In some embodiments, the reforestation measures include the types of trees to be replanted, the way of forest land clearing, the planting density, the planting method, and the maintenance measures.

[0132] Select tree species suitable for growth according to the soil, terrain and climate conditions of the replanting area. Priority should be given to native tree species to improve survival rate and ecological adaptability. If possible, select multiple tree species for replanting to increase the diversity and stability of the ecosystem.

[0133] Remove weeds in the replanting area to reduce competition for nutrients and water with newly planted trees. Remove dead and diseased trees in the area to prevent the spread of pests and diseases and provide sufficient growing space for newly planted trees.

[0134] Soil improvement can be carried out as needed, such as fertilization, increasing organic matter or adjusting soil pH value, to improve soil fertility and suitability.

[0135] Based on the characteristics of tree species and the resource information of the area, a reasonable planting density can be determined to avoid overcrowding or sparseness. In specific operations, adjust the planting density flexibly according to the terrain and actual situation to ensure that the trees have sufficient growing space.

[0136] Based on the tree species and soil conditions, the depth and width of the pits can be determined to ensure the full extension of the tree roots. Apply appropriate fertilization and watering during planting to provide the nutrients and water required for initial growth. An appropriate planting season can be selected, usually in spring or autumn, to improve the survival rate. Especially in the dry season, water regularly to ensure that the trees have sufficient water.

[0137] Of course, the health status of the trees can also be checked regularly, pests and diseases can be controlled in a timely manner to protect the healthy growth of newly planted trees. Then, by appropriately pruning the trees, the tree shape can be promoted to be beautiful and healthy growth; weed regularly to reduce competition with the trees. According to the growth of the trees and soil fertility, topdress in a timely manner to supplement necessary nutrient elements.

[0138] Through the above specific replanting measures, the high survival rate and healthy growth of newly planted trees can be ensured, and the restoration and sustainability of the ecosystem can be promoted.

[0139] According to a method for replanting and restoring degraded masson pine forests provided by an embodiment of the present invention, by establishing a forest resource map, recording regional resource information and tree grades in detail, and directly screening each logging area in stages based on the regional resource information and tree grades, rather than only considering the infected area, the target logging area can be more reasonably determined step by step. Combining with the forest resource map, the replanting area can be accurately determined, maximizing the utilization of the vacant land resources after logging, accelerating the renewal of forest resources, improving the utilization efficiency of forest land resources, ensuring the rationality of the logging area and distance, and reasonably centralizing the distribution of the logging and replanting areas, which can reduce the logging and replanting frequency, difficulty and cost, and improve the operation efficiency.

[0140] The following describes a replanting and restoration device for degraded masson pine forests provided by the present invention. The replanting and restoration device for degraded masson pine forests described below can be correspondingly referred to in relation to the replanting and restoration method for degraded masson pine forests described above.

[0141] As Figure 3 shown, a replanting and restoration device for degraded masson pine forests according to an embodiment of the present invention mainly includes a resource loading module 310, a first processing module 320, a second processing module 330, a third processing module 340, a fourth processing module 350, and a fifth processing module 360.

[0142] The resource loading module 310 is used to determine the forest resource map corresponding to the degraded masson pine forest;

[0143] The first processing module 320 is used to determine a first felling area for felling based on the forest resource map; the first felling area includes a general felling area and a target forest gap forest belt area; the general felling area is determined based on the tree grade, and the target forest gap forest belt area is determined based on the regional resource information;

[0144] The second processing module 330 is used to determine the area and location of each first felling area, perform buffer analysis on each first felling area to obtain the buffer area corresponding to each first felling area, and analyze the buffer area corresponding to each first felling area through the adjacency matrix algorithm to screen out a second felling area from each first felling area; the area of the second felling area is greater than the area threshold and the distance from any first felling area is greater than the distance threshold;

[0145] The third processing module 340 is used to screen out a third felling area for felling from the buffer areas connected to the second felling area based on the tree grade and regional resource information of the trees in the buffer areas connected to the second felling area;

[0146] The fourth processing module 350 is used to determine the target felling area for actual felling based on at least one of the first felling area, the second felling area, and the third felling area, and determine the replanting area in combination with the forest resource map;

[0147] The fifth processing module 360 is used to determine the replanting measures for the replanting area based on the regional resource information of the replanting area.

[0148] A replanting and restoration device for degraded masson pine forests according to an embodiment of the present invention, by establishing a forest resource map, details the regional resource information and tree grades, and directly screens each logging area in stages based on the regional resource information and tree grades, rather than only considering the infected areas. It can more reasonably and gradually determine the target logging area, and in combination with the forest resource map, accurately determine the replanting area, maximize the utilization of the vacant land resources after logging, accelerate the renewal of forest resources, improve the utilization efficiency of forest land resources, ensure the rationality of the logging area and distance, and reasonably centralize the distribution of the logging and replanting areas, which can reduce the logging and replanting frequency, difficulty and cost, and improve the operation efficiency.

[0149] Figure 4 An example of a schematic physical structure diagram of an electronic device is shown as Figure 4 shown. The electronic device may include: a processor 410, a communication interface 420, a memory 430, and a communication bus 440. Among them, the processor 410, the communication interface 420, and the memory 430 complete communication with each other through the communication bus 440. The processor 410 can call the logical instructions in the memory 430 to execute the replanting and restoration method for degraded masson pine forests, and the method includes: determining the forest resource map corresponding to the degraded masson pine forest; based on the forest resource map, determining the first logging area for logging; the first logging area includes a general logging area and a target forest gap forest belt area; the general logging area is determined based on the tree grade, and the target forest gap forest belt area is determined based on the regional resource information; determining the area and location of each first logging area, and performing buffer analysis on each first logging area to obtain the buffer area corresponding to each first logging area, and analyzing the buffer area corresponding to each first logging area through the adjacency matrix algorithm to screen the second logging area from each first logging area; the area of the second logging area is greater than the area threshold and the distance from any first logging area is greater than the distance threshold; based on the tree grade and regional resource information of the trees in the area connected to the second logging area, screening the third logging area for logging from the buffer area connected to the second logging area; based on at least one of the first logging area, the second logging area, and the third logging area, determining the target logging area for actual logging, and in combination with the forest resource map, determining the replanting area; based on the regional resource information of the replanting area, determining the replanting measures for the replanting area.

[0150] In addition, when the logical instructions in the above-mentioned memory 430 are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs.

[0151] On the other hand, the present invention also provides a computer program product. The computer program product includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the replanting and restoration method for degraded masson pine forests provided by the above-mentioned various methods. The method includes: determining a forest resource map corresponding to the degraded masson pine forest; based on the forest resource map, determining a first felling area for felling; the first felling area includes a general felling area and a target forest gap forest belt area; the general felling area is determined based on the tree grade, and the target forest gap forest belt area is determined based on the regional resource information; determining the area and location of each first felling area, and performing buffer analysis on each first felling area to obtain a buffer area corresponding to each first felling area, and analyzing the buffer areas corresponding to each first felling area through an adjacency matrix algorithm to screen out a second felling area from each first felling area; the area of the second felling area is greater than the area threshold and the distance from any one of the first felling areas is greater than the distance threshold; based on the tree grade and regional resource information of the trees in the area connected to the second felling area, screening out a third felling area for felling from the buffer area connected to the second felling area; based on at least one of the first felling area, the second felling area, and the third felling area, determining the target felling area for actual felling, and combining with the forest resource map, determining the replanting area; based on the regional resource information of the replanting area, determining the replanting measures for the replanting area.

[0152] In another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the method for replanting and repairing degraded masson pine forests provided by the above-mentioned various methods. The method includes: determining a forest resource map corresponding to the degraded masson pine forest; based on the forest resource map, determining a first felling area for felling; the first felling area includes a general felling area and a target forest gap forest belt area; the general felling area is determined based on the tree grade, and the target forest gap forest belt area is determined based on the regional resource information; determining the area and location of each first felling area, and performing buffer analysis on each first felling area to obtain a buffer area corresponding to each first felling area, and analyzing the buffer areas corresponding to each first felling area through an adjacency matrix algorithm to screen out a second felling area from each first felling area; the area of the second felling area is greater than an area threshold and the distance from any one of the first felling areas is greater than a distance threshold; based on the tree grade and regional resource information of the trees in the area connected to the second felling area, screening out a third felling area for felling from the buffer area connected to the second felling area; based on at least one of the first felling area, the second felling area, and the third felling area, determining a target felling area for actual felling, and combining with the forest resource map to determine a replanting area; based on the regional resource information of the replanting area, determining the replanting measures for the replanting area.

[0153] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.

[0154] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disc, etc., and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0155] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for replanting and restoring degraded masson pine forests, characterized in that, Including: Determine the forest resource map corresponding to the degraded masson pine forest; Based on the forest resource map, determine the first cutting area for logging; The first cutting area includes the general cutting area and the target forest gap forest belt area; The general cutting area is determined based on the tree grade, and the target forest gap forest belt area is determined based on the regional resource information; Determine the area and location of each first cutting area, conduct buffer analysis on each first cutting area to obtain the buffer area corresponding to each first cutting area, and analyze the buffer area corresponding to each first cutting area through the adjacency matrix algorithm to screen out the second cutting area from each first cutting area; the area of the second cutting area is greater than the area threshold and the distance from any first cutting area is greater than the distance threshold; Based on the tree grade and regional resource information of the trees in the area connected to the second cutting area, screen out the third cutting area for logging from the buffer area connected to the second cutting area; Based on at least one of the first cutting area, the second cutting area, and the third cutting area, determine the target cutting area for actual logging, and combine with the forest resource map to determine the replanting area; Based on the regional resource information of the replanting area, determine the replanting measures for the replanting area.

2. The replanting and restoration method for degraded masson pine forests according to claim 1, wherein, The buffer analysis is performed on each first cutting area to obtain the buffer area corresponding to each first cutting area, and the target plot is screened out from the buffer area corresponding to each first cutting area based on the adjacency matrix algorithm, and the first cutting area adjacent to the target plot is determined as the second cutting area, including: Perform buffer analysis on each first cutting area based on the distance threshold to obtain the buffer area corresponding to each first cutting area; Analyze the buffer area corresponding to each first cutting area within the distance threshold based on the adjacency matrix algorithm, and determine the first cutting area whose buffer area corresponding within the distance threshold does not overlap with any first cutting area and whose area is greater than the area threshold as the second cutting area.

3. The replanting and restoration method for degraded masson pine forests according to claim 1, wherein Based on the tree grade and regional resource information of the trees in the area connected to the second cutting area, screen out the third cutting area for logging from the buffer area connected to the second cutting area, including: Based on the tree grade of the trees in the buffer area connected to the second cutting area, screen out each alternative area from the buffer area connected to the second cutting area; Based on the regional resource information of each alternative area, screen out the third cutting area for logging from each alternative area.

4. The method for replanting and restoring the degraded masson pine forest according to claim 3, characterized in that, The screening of the third cutting area for logging from each alternative area based on the regional resource information of each alternative area includes: Evaluate each item in the regional resource information of each alternative area to obtain the regional characteristic value, and assign a weight value to each item; Based on the regional characteristic value and weight value of each item in the regional resource information of each alternative area, obtain the total regional characteristic value of each alternative area respectively; Based on the total regional characteristic value of each alternative area, screen out the third cutting area for logging from each alternative area.

5. The replanting and restoration method for degraded masson pine forests according to claim 1, characterized in that Based on at least one of the first logging area, the second logging area, and the third logging area, determining a target logging area for actual logging, and combining with the forest resource map to determine a replanting area, including: Based on at least one of the first logging area, the second logging area, and the third logging area, determining the target logging area; Based on the forest resource map, screening out forest gaps with a canopy density less than the canopy density threshold; Based on the forest gaps and the target logging area, determining the replanting area.

6. The method for replanting and repairing the degraded masson pine forest according to claim 1, characterized in that, The determining the target logging area based on at least one of the first logging area, the second logging area, and the third logging area includes: Determining the area in the first logging area except the second logging area, the second logging area, and the third logging area as the target logging area.

7. The method for replanting and restoring the degraded masson pine forest according to claim 1, wherein The forest gap and forest belt area is determined by the following method: Based on the density of trees, the height of trees, the canopy density of trees, and the terrain in different areas, determining alternative forest gap and forest belt areas; Based on the preset area condition and density condition of the forest gap and forest belt, determining the target forest gap and forest belt area from each alternative forest gap and forest belt area; The area condition is used to limit the area of a single forest gap and forest belt; the density condition is used to limit the total number of forest gaps and the total area of forest belts.

8. A replanting and restoration device for degraded masson pine forests, characterized in that, Including: A resource loading module, used to determine the forest resource map corresponding to the degraded masson pine forest; A first processing module, used to determine a first logging area for logging based on the forest resource map; the first logging area includes a general logging area and a target forest gap and forest belt area; The general logging area is determined based on the tree grade, and the target forest gap and forest belt area is determined based on the regional resource information; A second processing module, used to determine the area and location of each first logging area, perform buffer analysis on each first logging area to obtain a buffer area corresponding to each first logging area, and analyze the buffer areas corresponding to each first logging area through the adjacency matrix algorithm, and screen out a second logging area from each first logging area; the area of the second logging area is greater than the area threshold and the distance from any first logging area is greater than the distance threshold; A third processing module, used to screen out a third logging area for logging from the buffer areas connected to the second logging area based on the tree grade and regional resource information of the trees in the areas connected to the second logging area; A fourth processing module, used to determine a target logging area for actual logging based on at least one of the first logging area, the second logging area, and the third logging area, and combine with the forest resource map to determine a replanting area; A fifth processing module, used to determine the replanting measures for the replanting area based on the regional resource information of the replanting area.

9. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the replanting and restoration method for degraded masson pine forests according to any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium storing a computer program thereon, characterized in that, When the computer program is executed by the processor, it implements the replanting and restoration method for degraded masson pine forests according to any one of claims 1 to 7.

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