Carbon-negative ecological embankment and construction method thereof

Abstract

The application relates to the technical field of hydraulic engineering, and provides a negative-carbon ecological embankment and a construction method thereof, wherein the method comprises the following steps: based on undisturbed soil, a carbon-fixing medium and a curing agent, a negative-carbon matrix is configured; the negative-carbon matrix is layered and laid on an embankment structure layer, and a root guiding device is filled in the negative-carbon matrix, so that an embankment composite revetment is constructed; target vegetation is planted on the embankment composite revetment, so that the root system of the target vegetation is guided to grow to a deep area of the negative-carbon matrix by the root guiding device, a root-soil composite body is formed, and the construction of the negative-carbon ecological embankment is completed; the defects that the traditional ecological embankment is weak in structure and is completely dependent on natural vegetation, leading to insufficient stability, are effectively solved; not only can the thickness of a surface hard revetment be greatly reduced by using root system mechanics to compensate for the thickness, so as to optimize the engineering construction cost, but also a feasible solution is provided for constructing a green and resilient embankment which takes into account flood safety and ecological system continuity.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering technology, and in particular to a negative carbon type ecological embankment and its construction method. Background Technology

[0002] With the development of ecological water conservancy projects, the construction of ecological dikes has received increasing attention. Currently, there are two main methods for ecological dike construction: one is hard slope protection plus greening, which involves covering the surface of concrete or masonry structures with a small amount of soil and planting turf; the other is purely natural bank protection, which abandons hard structures and relies entirely on natural vegetation for protection.

[0003] However, both of these approaches have significant drawbacks in practical applications. The hard revetment with greening method relies heavily on traditional building materials such as cement and steel, resulting in extremely high carbon emissions during construction. Essentially, it remains a high-carbon project, which does not align with current green and low-carbon development principles. While purely natural revetments are environmentally friendly, their stability is poor in river sections with high flood erosion forces, making them unsuitable for practical engineering needs. Summary of the Invention

[0004] This invention provides a carbon-negative ecological embankment and its construction method to solve the problems of high carbon emissions, weak structure, and insufficient stability caused by complete reliance on natural vegetation in the construction of existing embankments.

[0005] This invention provides a method for constructing a carbon-negative ecological embankment, comprising: A negative carbon matrix is ​​prepared based on undisturbed soil, carbon fixation medium, and solidifying agent; The negative carbon matrix is ​​laid in layers in the structural layer of the dike, and root-guiding devices are buried in the negative carbon matrix to construct a composite slope protection for the dike. Target vegetation is planted on the composite slope of the dike so that the roots of the target vegetation are guided by the root guiding device to grow into the deep area of ​​the negative carbon matrix, forming a root-soil composite, thereby completing the construction of the negative carbon ecological dike.

[0006] According to the present invention, a method for constructing a carbon-negative ecological embankment is provided, wherein a carbon-negative matrix is ​​prepared based on undisturbed soil, a carbon-fixing medium, and a solidifying agent, comprising: Obtain biochar particles with a porous structure or industrial solid waste particles that have undergone desulfurization and denitrification treatment, and use the biochar particles or the industrial solid waste particles as the carbon fixation medium. Determine the mixing ratio of the undisturbed soil, the carbon fixation medium, and the curing agent, and mix the undisturbed soil, the carbon fixation medium, and the curing agent uniformly according to the mixing ratio to obtain the negative carbon matrix.

[0007] According to a method for constructing a carbon-negative ecological embankment provided by the present invention, the method involves laying the carbon-negative matrix in layers within the embankment structural layer and embedding root-guiding devices within the carbon-negative matrix to construct a composite embankment slope protection, comprising: The negative carbon matrix is ​​compacted in layers within the dike structure until a preset compaction thickness is reached. During the layered compaction process of the negative carbon matrix, a root-guiding device is embedded in the negative carbon matrix. The root-guiding device is a porous root-guiding tube filled with an induction medium. The bottom of the porous root tube is extended downward to a preset scour depth to construct a composite slope protection for the dike.

[0008] According to a method for constructing a negative carbon ecological embankment provided by the present invention, the method involves planting target vegetation on the composite slope protection of the embankment, so that the root system of the target vegetation is guided by the root guiding device to grow into the deep region of the negative carbon matrix, forming a root-soil composite to complete the construction of the negative carbon ecological embankment, and then further comprising: Obtain root pull-out mechanical test data corresponding to the target vegetation; Based on the root pull-out mechanical test data, the anti-sliding safety factor corresponding to the root-soil composite was determined; Based on the aforementioned anti-sliding safety factor, the thickness of the interlocking blocks on the slope of the composite revetment is adjusted.

[0009] According to a method for constructing a negative carbon ecological embankment provided by the present invention, the method involves planting target vegetation on the composite slope protection of the embankment, so that the root system of the target vegetation is guided by the root guiding device to grow into the deep region of the negative carbon matrix, forming a root-soil composite to complete the construction of the negative carbon ecological embankment, and then further comprising: Obtain the vegetation parameters of the target vegetation, including vegetation height and vegetation canopy closure; Based on the vegetation parameters, the real-time hydrodynamic parameters of the composite slope protection of the embankment are determined. The water level increment and the safety factor of the root-soil composite are evaluated based on the real-time hydrodynamic parameters. If the water level increment exceeds the water level increment threshold and / or the safety factor is lower than the safety factor threshold, a pruning strategy for the target vegetation is generated.

[0010] According to the present invention, a method for constructing a carbon-negative ecological embankment, wherein determining the real-time hydrodynamic parameters of the composite slope protection of the embankment based on the vegetation parameters includes: Based on the vegetation parameters, determine the three-dimensional biomass corresponding to the target vegetation; Based on the vegetation parameters and the three-dimensional biomass, the real-time hydrodynamic parameters of the embankment composite slope protection are determined.

[0011] According to the present invention, a method for constructing a carbon-negative ecological embankment, wherein the assessment of water level increment and the safety factor of the root-soil composite based on the real-time hydrodynamic parameters includes: Simulate the water level increment caused by the aforementioned real-time hydrodynamic parameters; The safety factor of the root-soil complex is assessed based on the water level increment and the three-dimensional biomass.

[0012] According to the present invention, a method for constructing a carbon-negative ecological embankment, the step of generating a pruning strategy for the target vegetation further includes: Obtain the biomass waste generated after pruning based on the pruning strategy; The pyrolysis equipment is controlled to convert the biomass waste into derived carbon sequestration media; The derived carbon fixation medium is backfilled onto the back slope of the composite revetment of the dike.

[0013] According to the present invention, a method for constructing a carbon-negative ecological embankment, the step of generating a pruning strategy for the target vegetation further includes: Identify the slope parameters of the target construction slope segment corresponding to the pruning strategy; If the slope parameter exceeds the slope threshold, the spraying equipment is controlled to spray plant growth regulators to control the growth rate and branching density of the target vegetation.

[0014] This invention also provides a carbon-negative ecological dike, comprising: The core fill layer of the dike is located in the internal area of ​​the negative carbon ecological dike. A negative carbon matrix layer covers the outer slope of the core fill layer of the dike, and the negative carbon matrix layer is filled with a carbon fixation medium. A root-guiding device is embedded in the negative carbon matrix layer, and the root-guiding device is filled with an induction medium for inducing plant growth. A flexible vegetation layer is planted on the surface of the negative carbon matrix layer. The roots of the plants contained in the flexible vegetation layer are guided by the root guiding device to penetrate into the negative carbon matrix layer, forming a root-soil complex.

[0015] The carbon-negative ecological embankment and its construction method provided by this invention utilize a carbon-fixing medium to configure a carbon-negative matrix as the core filler of the embankment, physically sealing stable carbon elements within the embankment structure. This fundamentally reverses the high carbon emission dilemma of traditional embankments, achieving a net carbon contribution during the construction phase. Simultaneously, a root-guiding device is used to directionally induce the roots of target vegetation to grow into the deeper areas of the carbon-negative matrix, promoting a strong interweaving of plant roots and matrix to form a root-soil composite. The mechanical properties of plant roots compensate for the shear strength of the embankment, achieving a significant biological reinforcement effect. This effectively solves the defects of traditional ecological embankments, such as weak structure and insufficient stability due to complete reliance on natural vegetation. It not only utilizes root mechanical compensation to significantly reduce the thickness of the surface hard revetment to optimize engineering construction costs, but also provides a practical solution for constructing green and resilient embankments that balance flood control safety and ecosystem continuity. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a flowchart illustrating the carbon-negative ecological embankment construction method provided by the present invention; Figure 2 This is a cross-sectional view of the multi-layer composite structure of the negative carbon type ecological dike provided by the present invention; Figure 3 This is a diagram illustrating the mechanism of microscopic interaction between the biochar matrix and the root system provided by this invention. Figure 4 This is a logic block diagram of the dynamic control mechanism based on digital twins provided by the present invention; Figure 5 This is a feedback curve diagram of growth, pruning, and carbon removal during dynamic construction provided by the present invention; Figure 6 This is a schematic diagram of the structure of the negative carbon type ecological dike provided by the present invention.

[0018] Figure label: 610: Core fill layer of the dike; 620: Negative carbon matrix layer; 630: Root guide device; 640: Flexible vegetation layer. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0020] With the continuous development of ecological water conservancy projects, the construction of ecological dikes has received increasing attention. Currently, the following two methods are mainly used in the field of ecological dike construction: one is hard slope protection plus greening, that is, covering a small amount of soil and planting turf on the surface of concrete or masonry structures; the other is pure natural bank protection, that is, abandoning hard structures and relying entirely on natural vegetation for protection.

[0021] However, both of the above-mentioned solutions have obvious drawbacks in practical applications. On the one hand, the traditional approach has a heavy carbon footprint. The combination of hard revetment and greening relies heavily on traditional building materials such as cement and steel, resulting in extremely high carbon emissions during the construction phase. This approach is essentially still a high-carbon project. On the other hand, the traditional design has weak structural integrity. Purely natural revetments often lack stability in river sections with high flood scouring forces, failing to effectively convert the mechanical properties of vegetation roots into the shear strength of the embankment, ultimately leading to redundant structural design of the embankment.

[0022] In response, this invention provides a method for constructing a carbon-negative ecological embankment. The method aims to achieve physical carbon sequestration by configuring a carbon-negative matrix containing carbon-fixing media as filler, and to induce the vegetation roots to grow into deeper layers using a root-inducing device to form a robust root-soil composite. This effectively overcomes the defects of high carbon emissions and heavy carbon footprint in traditional ecological embankment construction, as well as the structural weakness and insufficient stability caused by the failure to convert the mechanical properties of the vegetation roots. The method achieves net carbon negligence during the engineering construction phase and significantly improves the overall erosion resistance stability and structural strength of the embankment.

[0023] Figure 1 This is a flowchart illustrating the carbon-negative ecological embankment construction method provided by the present invention, as shown below. Figure 1 As shown, the method includes: Step 110: Prepare a negative carbon matrix based on the undisturbed soil, carbon fixation medium, and solidifying agent; Step 120: The negative carbon matrix is ​​laid in layers in the dike structure layer, and the root guide device is buried in the negative carbon matrix to construct the dike composite slope protection. Step 130: Plant the target vegetation on the composite slope protection of the dike so that the roots of the target vegetation are guided by the root guiding device to grow into the deep area of ​​the negative carbon matrix, forming a root-soil composite, thereby completing the construction of the negative carbon ecological dike.

[0024] Specifically, the primary task in constructing a carbon-negative ecological embankment is to prepare the key material for embankment filling: the carbon-negative matrix. This matrix can be prepared from undisturbed soil, a carbon sequestration medium, and a solidifying agent. Here, the undisturbed soil can be natural soil directly excavated from the embankment construction site, or conventional base soil sourced from nearby areas. This embodiment of the invention does not specifically limit this, but it should generally cover common engineering soils of different textures and types. The carbon sequestration medium is a material with extremely stable chemical properties, which is not easily decomposed in natural soil environments for extended periods (e.g., hundreds of years) and can effectively sequester carbon. Using it as the core component of the matrix aims to achieve long-term physical sequestration of carbon during the embankment filling stage. The solidifying agent is an additive used to improve the engineering properties of the mixed soil and enhance the overall mechanical strength and structural stability of the matrix.

[0025] In detail, in the embodiments of the present invention, the negative carbon matrix is ​​a novel modified composite filler formed by uniformly mixing and blending the original soil, carbon fixation medium and curing agent according to design requirements.

[0026] In the process of configuring the negative carbon matrix, the mixing ratio of undisturbed soil, carbon sequestration medium, and solidifying agent can be rationally determined based on the actual engineering requirements for the design strength of the dike and the expected carbon sequestration target. These components are then uniformly mixed using mechanical or manual methods. This configuration process transforms engineering construction, which would otherwise easily release carbon into the atmosphere, into a carrier for physical carbon sequestration, laying the material foundation for building net negative carbon projects.

[0027] After the negative carbon matrix is ​​properly configured, it can be applied to the physical construction of the dike. Figure 2 This is a cross-sectional view of the multi-layer composite structure of the negative carbon type ecological dike provided by the present invention, as shown below. Figure 2 As shown, the levee structural layer is the foundation layer covering the water-facing and water-repellent slopes outside the inner core fill layer of the levee. The root-guiding device is a structural component buried underground that can directionally induce or attract plant roots to grow in a specific direction and depth; it can contain substances that induce root development. The levee composite slope protection is a three-dimensional protective structure composed of a laid negative carbon matrix layer and the root-guiding device pre-embedded within it, combining slope protection and ecological guidance functions.

[0028] In practical implementation, to ensure the compaction degree and overall stress stability of the negative carbon matrix, a layered spreading and compaction method can be adopted, laying the negative carbon matrix layer by layer on the embankment structural layer, such as the water-facing slope structural layer of the embankment. During the layered laying and compaction process of the negative carbon matrix, root guide devices can be buried in its internal depth. Through the layered laying and burying process, a multi-layered composite structure is constructed, which includes physically sealed carbon space and root guidance channels, thereby obtaining the composite slope protection of the embankment.

[0029] Figure 3 This is a diagram illustrating the mechanism of microscopic interaction between the biochar matrix and roots provided by this invention, as shown below. Figure 3 As shown, the carbon fixation medium particles (biochar particles) pre-embedded in the negative carbon matrix not only play a role in the physical sequestration of carbon, but their own characteristics can also provide microscopic structural support and interactive environment through interfacial adhesion when they come into contact with plant roots.

[0030] After completing the physical construction of the composite slope protection of the dike, the ecological construction of the vegetation community can proceed. Here, the target vegetation is a plant community with a certain ability to prevent wind erosion and stabilize soil, adapt to the river hydrological environment, and possess strong vitality. Examples include shrubs, trees, and herbaceous plants with deep root systems and flexible above-ground parts. The deep area of ​​the negative carbon matrix refers to the deeply buried matrix area far from the surface of the slope protection and close to the designed erosion control safety line inside the dike. The root-soil composite is a biomechanical composite structure with extremely strong overall tensile and shear resistance, formed by the tightly intertwined, entwined, and bonded root network of plants with the surrounding negative carbon matrix.

[0031] In practical planting operations, the target vegetation can be planted on the surface structure of the composite slope protection of the embankment. As the vegetation grows and develops, its root system, after sensing the effect of the root-guiding device embedded in the negative carbon matrix, will break the natural trend of disorderly spread and grow in the shallow layer. Instead, it will be directionally guided and overcome the limitations of the shallow layer, taking root and growing longitudinally into the deeper areas of the negative carbon matrix. According to biomechanical principles, the vast root network deeply embedded in the negative carbon matrix is ​​tightly integrated with the negative carbon matrix, significantly enhancing soil cohesion. This acts as a mechanical compensation similar to biological steel reinforcement or biological reinforcement, firmly anchoring the loose matrix soil (root anchoring band). Ultimately, a high-strength root-soil composite can be formed, thus completing the construction of a negative carbon ecological embankment that combines high structural strength with negative carbon environmental protection characteristics.

[0032] The carbon-negative ecological embankment construction method provided by this invention uses a carbon fixation medium to configure a carbon-negative matrix as the core filler of the embankment, physically sealing stable carbon elements inside the embankment structure. This reverses the high carbon emission dilemma of traditional embankments from the source and achieves a net negative carbon contribution during the construction phase. Simultaneously, with the help of a root-guiding device, the target vegetation roots are directionally induced to grow into the deep area of ​​the carbon-negative matrix, promoting the firm interweaving of plant roots and matrix to form a root-soil composite. The mechanical properties of plant roots are used to compensate for the shear strength of the embankment, achieving a significant biological reinforcement effect. This effectively solves the defects of traditional ecological embankments, such as weak structure and insufficient stability due to complete reliance on natural vegetation. It can not only significantly reduce the thickness of the surface hard revetment by utilizing root mechanical compensation to optimize engineering construction costs, but also provides a practical solution for constructing green and resilient embankments that take into account both flood control safety and ecosystem continuity.

[0033] Based on the above embodiments, step 110 includes: Obtain biochar particles with a porous structure or industrial solid waste particles that have undergone desulfurization and denitrification treatment, and use the biochar particles or industrial solid waste particles as carbon fixation media. Determine the mixing ratio of undisturbed soil, carbon fixation medium, and curing agent, and mix them evenly according to the mixing ratio to obtain a negative carbon matrix.

[0034] Specifically, to achieve long-term stable carbon sequestration and provide a favorable interaction environment for plant roots, this invention specifies the preferred material for the carbon sequestration medium: biochar granules or industrial solid waste granules that have undergone desulfurization and denitrification treatment. Here, biochar granules refer to carbon-rich solid materials produced by the pyrolysis of biomass under anaerobic or limited oxygen conditions. They possess a well-developed porous structure and extremely stable chemical properties, such as the ability to be sequestered in soil for hundreds of years without decomposition. For example, in the actual engineering preparation stage, biochar granules with a particle size between 2-5 mm can be prepared or purchased as the carbon sequestration medium.

[0035] Furthermore, considering that biochar may be too expensive or difficult to obtain in large quantities in practical engineering, industrial solid waste particles that have undergone desulfurization and denitrification treatment can be used as an alternative. These industrial solid waste particles can be solid waste generated during industrial production processes, such as fly ash and steel slag. After necessary harmless treatment (such as desulfurization and denitrification), they also possess a certain physical storage capacity and structural filling function. By using them as carbon fixation media fillers, not only can the resource reuse of solid waste be realized, but the preparation cost of negative carbon matrix can also be effectively reduced.

[0036] After obtaining a suitable carbon sequestration medium, this embodiment of the invention also requires precise control of the proportions of each component to ensure the comprehensive performance of the negative carbon matrix. Here, the mixing ratio refers to the mass ratio between undisturbed soil, carbon sequestration medium, and a small amount of solidifying agent, determined through experiments or engineering experience based on the strength requirements, porosity requirements, and desired carbon sequestration targets of the embankment design. For example, the mixing ratio can be 75% undisturbed soil, 15% biochar particles, and 10% slag solidifying agent.

[0037] Once the mixing ratio is determined, appropriate mechanical equipment, such as a large mixing machine, can be used to uniformly mix the prepared undisturbed soil, carbon-fixing medium, and curing agent according to the specified ratio. Through thorough mixing, the carbon-fixing medium and curing agent are evenly dispersed in the undisturbed soil, resulting in a modified soil matrix with uniform properties and stable structure, i.e., a negative carbon matrix.

[0038] In this embodiment of the invention, by using biochar particles with a porous structure or industrial solid waste particles that have undergone harmless treatment as carbon sequestration media, and mixing them uniformly according to a scientific mixing ratio, it is possible not only to ensure that the negative carbon matrix has an extremely stable long-term physical carbon sequestration capability, but also to realize the resource utilization of industrial waste, effectively control material costs, and lay a reliable foundation for the net negative carbon target of dike construction.

[0039] Based on the above embodiments, step 120 includes: The negative carbon matrix is ​​compacted in layers within the dike structure until the preset compaction thickness is reached. During the layered compaction process of the negative carbon matrix, a root-guiding device is embedded in the negative carbon matrix. The root-guiding device is a porous root-guiding tube filled with an induction medium. The bottom of the porous root tube is extended downward to the preset scour depth to construct a composite slope protection for the embankment.

[0040] Specifically, when applying the prepared negative carbon matrix to the structural layers of a dike, such as the water-facing slope, a layered compaction construction process is required to ensure the compactness, bearing capacity, and overall anti-sliding stability of the soil structure. That is, instead of a single, large-thick layer, the negative carbon matrix is ​​spread in batches and stages, and compacted using mechanical or manual tamping equipment. The preset compaction thickness here refers to the single-layer compaction standard or overall slope protection design thickness set according to the dike engineering design specifications, matrix material characteristics, and actual stress requirements. For example, in a specific engineering embodiment, the negative carbon matrix can be spread in layers, with each layer's compaction thickness strictly controlled between 20-30 cm. This layered spreading and compaction process is repeated continuously until the entire negative carbon matrix layer reaches the preset compaction thickness.

[0041] During the layered spreading and compaction of the negative carbon matrix, the root-guiding device needs to be installed simultaneously to achieve a seamless connection between matrix filling and structural pre-embedding. Here, to achieve more efficient and precise directional guidance of the root system, in this embodiment of the invention, the root-guiding device is specifically a porous root-guiding tube filled with an induction medium. The tube wall has multiple pore structures rationally distributed. These pores not only facilitate the slow release of the induction substance inside the tube but also provide a physical channel for plant roots to subsequently penetrate the tube wall and enter the tube or extend downwards along the tube body. The induction medium inside is a nutrient or chemical medium that can strongly stimulate and attract plant roots to grow. For example, it can be filled with an induction medium rich in phosphorus and potassium to utilize the natural fertilization tendency of plant roots to phosphorus, potassium, and other micronutrients (growth towards fertile water), effectively inducing the roots of the target vegetation to actively root and grow in the direction and deeper areas of the porous root-guiding tube.

[0042] Furthermore, when pre-burying porous root guide pipes, their longitudinal depth must be strictly controlled. That is, the bottom of the porous root guide pipe should be extended downwards in a vertical or oblique direction until it is buried below the preset scour depth. The preset scour depth here is the design scour line under a major flood (i.e., the maximum depth boundary at which the flood may scour away the surface soil) calculated based on the river's hydrogeological conditions, historical flood velocities, and hydrodynamic models.

[0043] For example, in a specific engineering embodiment, the bottom depth of the pre-embedded porous root guide tube needs to reach 0.5m below the design scour line. By burying the bottom of the porous root guide tube below this safe depth, it can be ensured that even in the event of extreme floods or a certain degree of scour damage to the surface matrix, the main structure of the porous root guide tube and the core root system induced to the deep layers remain safe and stable, without being exposed or failing. Ultimately, together with the negative carbon matrix, they form a composite slope protection structure with extremely strong scour resistance.

[0044] In this embodiment of the invention, by strictly controlling the layered compaction thickness of the negative carbon matrix, the compactness and mechanical stability of the slope protection foundation are ensured. At the same time, by pre-embedding porous root guide tubes filled with induction medium and forcibly burying their bottom ends deep below the preset scour depth, not only is precise and directional induction of plant roots to a deep safe area achieved, but the structural damage risk caused by flood erosion and scour is also effectively resisted, providing a reliable physical channel and depth safety guarantee for the stable formation of the subsequent high-strength root-soil composite.

[0045] Based on the above embodiments, target vegetation is planted on the composite slope protection of the dike, so that the roots of the target vegetation are guided by the root-guiding device to grow into the deep area of ​​the negative carbon matrix, forming a root-soil composite, thereby completing the construction of the negative carbon ecological dike. This also includes: Obtain root pull-out mechanical test data corresponding to the target vegetation; Based on root pull-out mechanical test data, the anti-sliding safety factor corresponding to the root-soil composite was determined; Based on the anti-sliding safety factor, the thickness of the interlocking blocks on the slope of the composite slope protection of the embankment is adjusted.

[0046] Specifically, after the target vegetation, such as dawn redwood and willow, with its deep-rooted flexible shrubs, has been planted and grown for a certain period, and its roots have been guided by the root-guiding device and have formed a preliminary root-soil complex in the deep region of the negative carbon matrix, it is necessary to conduct community construction and initial mechanical assessment. To this end, this embodiment of the invention proposes to conduct root pull-out tests to obtain mechanical parameters, i.e., root pull-out mechanical test data. The root pull-out mechanical test data here uses specialized pull-out testing instruments to simulate a series of physical data, such as the maximum tensile force, displacement deformation, and friction force generated when plant roots are pulled out of the negative carbon matrix in an in-situ environment. These data can intuitively and realistically reflect the magnitude of the anchoring, entanglement, and interfacial adhesion between the plant roots and the negative carbon matrix, and are key indicators for evaluating the strength of the biological reinforcement effect.

[0047] After obtaining accurate root pull-out mechanical test data, this data can be used to evaluate and correct the overall mechanical performance indicators of the embankment, such as the anti-sliding safety factor. Here, the anti-sliding safety factor is a core design indicator for measuring the structural stability of the embankment slope and its ability to resist overall or local sliding failure. Traditional calculations of the anti-sliding safety factor often neglect the mechanical contribution of plant roots. However, in this embodiment of the invention, since the deep roots and the negative carbon matrix form a root-soil composite with high cohesion, the soil cohesion is greatly enhanced, acting as a biological reinforcing steel. Therefore, by substituting the obtained root pull-out mechanical test data into the mechanical evaluation model, the anti-sliding safety factor for this root-soil composite, which fully considers the mechanical compensation effect of the roots, can be calculated.

[0048] After this, the structural design parameters of the embankment can be optimized based on the anti-sliding safety factor calculated in the previous step. Here, the slope interlocking blocks are rigid or semi-rigid structural components, such as concrete interlocking blocks, laid on the surface of the embankment to resist surface water erosion and prevent soil loss. Adjusting the thickness of the slope interlocking blocks of the composite embankment slope protection specifically means that since the root-soil composite itself has provided sufficient shear and sliding strength compensation, the original anti-sliding safety factor is improved, thus eliminating the need to rely excessively on a thick surface rigid revetment to maintain stability. Therefore, the thickness of the slope interlocking blocks can be reasonably reduced or thinned based on the assessed anti-sliding safety factor.

[0049] In this embodiment of the invention, the biological reinforcement effect of plant roots is evaluated by obtaining real root pull-out mechanical test data, and the anti-sliding safety factor is corrected accordingly. This allows for a reasonable reduction in the thickness of the surface hard revetment while ensuring the overall safety and stability of the dike. This not only breaks the limitation of traditional ecological dikes that fail to transform root mechanical properties, resulting in redundant structural design, but also significantly reduces the use of high-carbon emission building materials such as cement and steel. While effectively reducing engineering construction costs, it further aligns with the concept of low-carbon and negative-carbon ecological construction.

[0050] Based on the above embodiments, target vegetation is planted on the composite slope protection of the dike, so that the roots of the target vegetation are guided by the root-guiding device to grow into the deep area of ​​the negative carbon matrix, forming a root-soil composite, thereby completing the construction of the negative carbon ecological dike. This also includes: Obtain the vegetation parameters of the target vegetation, including vegetation height and vegetation canopy closure; Based on vegetation parameters, the real-time hydrodynamic parameters of the composite slope protection of the dike were determined. The water level increment and the safety factor of the root-soil complex are evaluated based on real-time hydrodynamic parameters. If the water level increment exceeds the water level increment threshold and / or the safety factor is lower than the safety factor threshold, a pruning strategy for the target vegetation is generated.

[0051] Specifically, after the construction of the composite slope protection of the dike and the planting of the target vegetation are completed, the biomass of the vegetation will continue to increase over time. In order to avoid the disorderly growth of vegetation leading to excessive flood resistance in the river channel, a dynamic control mechanism based on digital twins is introduced in this embodiment of the invention. Figure 4 This is a logic block diagram of the dynamic control mechanism based on digital twins provided by the present invention, such as... Figure 4 As shown, in the actual operation and maintenance phase, regular monitoring can be adopted, such as quarterly drone inspections, to collect data on the target vegetation on the surface of the composite slope protection of the dike, so as to obtain the vegetation parameters of the target vegetation.

[0052] Here, vegetation parameters are geometric and ecological data indicators reflecting the current growth status and three-dimensional spatial morphology of plants; specific vegetation parameters may include vegetation height, vegetation canopy closure, etc. Vegetation height is the vertical spatial dimension of vegetation from the root base to the top of the canopy, while vegetation canopy closure is the ratio of the vertical projection area of ​​the vegetation canopy on the ground to the total area of ​​the forest land. High-precision vegetation parameters can be obtained by collecting data using drones equipped with devices such as LiDAR (Light Detection and Ranging) and multispectral equipment.

[0053] Furthermore, after obtaining the vegetation parameters, this embodiment of the invention also needs to assess the degree of obstruction of the target vegetation to the water flow, thereby obtaining real-time hydrodynamic parameters. Here, real-time hydrodynamic parameters refer to physical quantities that dynamically reflect the frictional resistance generated by the river boundary on the water flow under the current distribution and growth state of the target vegetation; a typical example is real-time Manning roughness. Specifically, by inputting the obtained vegetation height, canopy closure, and other parameters into the hydrodynamic model, the real-time hydrodynamic parameters characterizing the current flood resistance can be calculated.

[0054] Next, based on the calculated real-time hydrodynamic parameters, the flood discharge and structural safety of the dike can be assessed, thereby obtaining the water level increment and safety factor. Here, the water level increment refers to the additional height the water level is raised compared to the unvegetated or baseline state when encountering a flood with the same design flow, due to the increase in real-time hydrodynamic parameters caused by the increase in target vegetation biomass. The safety factor is a comprehensive evaluation index used to characterize the overall damage resistance and flood control safety status of the dike, obtained by comprehensively considering the shear force of the water flow, the water level increment, and the current shear strength of the root-soil composite. Specifically, in this embodiment of the invention, based on the real-time hydrodynamic parameters, the possible water level increment can be calculated in real time using a real-time hydrodynamic simulation engine, and the safety factor of the root-soil composite under the corresponding flood conditions can be evaluated simultaneously.

[0055] Figure 5 This is a feedback curve diagram of growth, pruning, and carbon removal during dynamic construction provided by the present invention, such as... Figure 5 As shown in the figure, the horizontal axis represents the running time, and the vertical axis represents the Manning roughness / flood level. During the vegetation growth stage, the Manning roughness and the corresponding flood level gradually increase. When the preset safety threshold is reached, a dynamic control mechanism is triggered. That is, when the water level increment exceeds the water level increment threshold and / or the safety factor is lower than the safety factor threshold, a pruning strategy for the target vegetation is generated.

[0056] Here, the water level increment threshold and safety factor threshold are pre-set safety critical limits according to the flood control safety design specifications for water conservancy projects. When the assessed water level increment is too large (exceeding the water level increment threshold) and / or the safety factor decreases (below the safety factor threshold), it is determined that the current flood discharge resistance exceeds the standard and there is a safety hazard. Therefore, a pruning strategy for the target vegetation needs to be generated. Conversely, if the conditions are met, i.e., the water level increment is small (less than the water level increment threshold) and the safety factor is improved (above the safety factor threshold), then the natural carbon sequestration state is maintained / growth continues.

[0057] Among them, pruning strategy refers to the operational plan for human intervention in vegetation exceeding the standard. Specifically, when generating a pruning strategy, a precise pruning coordinate map, trunk cutting height, and redundant branch pruning ratio (e.g., 30%) are generated based on current vegetation parameters and three-dimensional biomass, and then a targeted pruning strategy is generated accordingly. Through precise strategy guidance, blind intervention can be avoided, allowing the pruned Manning roughness / flood level to return to a safe range (e.g., Figure 5 The rapid descent segment of the curve during the mid-pruning stage.

[0058] In this embodiment of the invention, vegetation parameters are obtained through digital inspection, and real-time hydrodynamic parameters are calculated and safety risks are assessed in real time. When the safety red line is reached, a pruning strategy is triggered. This effectively solves the problem in traditional levee management where there is a lack of quantitative control over vegetation growth and the strategy of clearing all vegetation indiscriminately leads to the instantaneous release of carbon sinks accumulated in the early stage and damages the ecological continuity. Under the premise of ensuring flood control safety, precise pruning rather than complete clearing preserves vegetation carbon sinks to the maximum extent, maintains the continuity of the river ecological corridor, and enables the levee to have the resilience and safety guarantee capability to adapt to climate change.

[0059] Based on the above embodiments, the real-time hydrodynamic parameters of the composite slope protection of the dike are determined based on vegetation parameters, including: Based on vegetation parameters, determine the three-dimensional biomass corresponding to the target vegetation; Based on vegetation parameters and three-dimensional biomass, real-time hydrodynamic parameters of the composite slope protection of the dike were determined.

[0060] Specifically, to more accurately calculate the obstruction effect of vegetation on water flow, in this embodiment of the invention, after obtaining the vegetation parameters, the three-dimensional spatial characteristics are further quantified. That is, the three-dimensional biomass corresponding to the target vegetation is calculated using the vegetation parameters; here, three-dimensional biomass refers to a quantitative indicator of the volume or mass occupied by the target vegetation in three-dimensional space, which not only considers the height and coverage area of ​​the target vegetation, but also integrates the three-dimensional morphological characteristics of the target vegetation, such as branching density and spatial distribution structure. Specifically, a three-dimensional biomass calculation model can be used to transform the vegetation parameters of the target vegetation into three-dimensional biomass that reflects the true spatial volume and density distribution of the target vegetation.

[0061] After accurately assessing the three-dimensional biomass of the target vegetation, hydrodynamic calculations can be performed in conjunction with basic vegetation parameters. Specifically, vegetation parameters such as vegetation height and canopy closure, along with the three-dimensional biomass, can be input into the hydrodynamic model. Because the three-dimensional biomass more realistically reflects the complex physical obstacles encountered by water flow through the target vegetation, the hydrodynamic model can more accurately calculate real-time hydrodynamic parameters such as the current Manning roughness.

[0062] In this embodiment of the invention, three-dimensional biomass is introduced into the process of determining real-time hydrodynamic parameters. This allows the assessment of vegetation water-blocking effects to go beyond simple two-dimensional coverage or height, and instead delve into the three-dimensional morphological structure. This greatly improves the accuracy and reliability of the hydrodynamic model calculation results, providing more solid data support for subsequent accurate assessment of water level increments and the formulation of scientific pruning strategies.

[0063] Based on the above embodiments, the evaluation of water level increment and the safety factor of the root-soil composite based on real-time hydrodynamic parameters includes: Simulation of water level increments based on real-time hydrodynamic parameters; The safety factor of the root-soil complex was assessed based on water level increment and three-dimensional biomass.

[0064] Specifically, after obtaining accurate real-time hydrodynamic parameters, when assessing their impact on flood control and structural safety, a real-time hydrodynamic simulation engine can be used to simulate the water level increment caused by the real-time hydrodynamic parameters. For example, the real-time hydrodynamic parameters can be input into the river hydrodynamic model as boundary conditions or resistance parameters, and the current flood water level can be calculated under the set design flood flow conditions. Subsequently, the calculated flood water level is compared and subtracted from the water level under the baseline state (such as no vegetation or the baseline state) to obtain the additional water level rise due to the water blocking effect of vegetation, i.e., the water level increment.

[0065] After determining the water level increment, it is also necessary to comprehensively consider the impact of target vegetation and water flow on the structural safety of the dike. Specifically, this can involve calculating a safety factor that characterizes the stability of the dike by comprehensively considering external hydrodynamic loads and internal structural resistance.

[0066] Specifically, the increase in water level leads to increased water pressure and local shear force exerted by the water flow on the embankment slope; while the increase in three-dimensional biomass means that the vegetation canopy and branches will bear greater drag force from the water flow. This drag force is transmitted to the underground root system through the main stem of the vegetation, and then transformed into pull-out force and shear force on the root-soil composite. Therefore, in this embodiment of the invention, the additional hydrodynamic load caused by the simulated increase in water level is superimposed with the drag force caused by the three-dimensional biomass, and combined with the anti-sliding and shear strength of the root-soil composite itself evaluated by the previous root pull-out mechanics test, so that the safety factor of the root-soil composite under the current working condition can be scientifically and accurately calculated.

[0067] In this embodiment of the invention, real-time hydrodynamic parameters are converted into intuitive water level increments, and combined with the three-dimensional biomass of the target vegetation to comprehensively evaluate the complex hydrodynamic loads and structural resistance borne by the root-soil complex. This makes the assessment of the safety factor more scientific, comprehensive, and accurate, effectively quantifying the dynamic balance between the water-blocking force of the aboveground vegetation and the soil-fixing resistance of the underground root system. This provides an extremely accurate basis for subsequent judgment on whether a pruning strategy needs to be formulated, and completely changes the extensive mode of blindly clearing obstacles based on experience in traditional flood control management.

[0068] Based on the above embodiments, a pruning strategy for the target vegetation is generated, which further includes: Obtain biomass waste generated after pruning based on pruning strategies; The controlled pyrolysis equipment converts biomass waste into derived carbon sequestration media; The derived carbon sequestration medium was backfilled onto the back slope of the composite revetment of the embankment.

[0069] Specifically, after generating a precise pruning strategy and guiding manual or mechanical pruning of redundant branches in the target vegetation, a large amount of plant residue is generated. Here, biomass waste refers to the plant biomass residue such as branches and leaves produced after precise pruning according to the pruning strategy. To prevent these plant residues from decomposing in the natural environment and releasing the carbon dioxide absorbed through photosynthesis back into the atmosphere, this embodiment of the invention proposes to collect the pruned branches and leaves for resource recovery and carbon sequestration.

[0070] In detail, after collecting biomass waste, its easily decomposable carbon needs to be fixed through physical and chemical means. Here, the pyrolysis equipment can be a device with biomass pyrolysis and carbonization capabilities. To improve processing efficiency and reduce carbon emissions from transportation, mobile pyrolysis equipment is preferred for in-situ treatment, converting biomass waste into derived carbon fixation media. Derived carbon fixation media refers to extremely stable porous biochar material generated after biomass waste undergoes a high-temperature, oxygen-deficient carbonization reaction within the pyrolysis equipment. By controlling the in-situ conversion using the pyrolysis equipment, the easily decomposable biomass that has been pruned can be converted into carbon carriers that can be stored for a long time (such as...). Figure 5 (The carbon removal stage in the process).

[0071] After this, the derived carbon sequestration medium obtained through pyrolysis can be reused in levee engineering. Here, the back slope refers to the side of the levee structure that is away from the main river channel and has a weaker scouring force from the water flow. By backfilling and burying the stable derived carbon sequestration medium as filler in the soil matrix of the levee's back slope, long-term physical sequestration of carbon is achieved.

[0072] In this embodiment of the invention, biomass waste generated from pruning is collected and converted in situ into a stable derivative carbon sequestration medium using a pyrolysis device. This medium is then backfilled onto the back slope of the embankment, creating a dynamic biomass recycling process involving growth, pruning, and carbon removal. This not only completely solves the problem of waste disposal after vegetation pruning and avoids secondary carbon sequestration, but also achieves a closed-loop carbon sequestration system. This allows the ecological embankment to continuously increase its net carbon dioxide sequestration over a long period of operation, thereby providing a significant contribution to carbon reduction.

[0073] Based on the above embodiments, a pruning strategy for the target vegetation is generated, which further includes: Identify the slope parameters of the target construction slope segment corresponding to the pruning strategy; If the slope parameter exceeds the slope threshold, the spraying equipment will be controlled to spray plant growth regulators to control the growth rate and branching density of the target vegetation.

[0074] Specifically, after generating a pruning strategy for the target vegetation, considering that the terrain of actual ecological embankment projects is often complex, not all areas have slopes suitable for direct access by manual labor or conventional machinery for physical pruning operations. Therefore, this embodiment of the invention proposes to determine the terrain of the area to be operated before physical intervention. Here, the target construction slope section refers to the embankment section indicated by the pruning strategy that requires flood resistance intervention on the target vegetation; the slope parameter refers to the inclination angle or steepness of the surface of the target construction slope section. In practical applications, the slope parameters of the target construction slope section can be accurately identified and extracted by combining three-dimensional terrain data obtained from UAV inspections or a preset digital elevation model.

[0075] After obtaining the slope parameters, they need to be compared with the established safety operation standards. Here, the slope threshold is a pre-set maximum slope threshold used to determine whether manual or conventional machinery can safely and effectively carry out pruning operations. If the slope parameters indicate that the slope of the target construction slope exceeds this threshold, it means that the target construction slope is an extremely steep slope with rugged terrain, making it impossible for personnel or conventional machinery to safely stand and carry out pruning. In this case, forcibly carrying out pruning operations would pose a significant safety hazard.

[0076] To effectively manage vegetation biomass on extremely steep slopes where physical pruning is not feasible, this invention employs chemical methods instead of physical pruning. Specifically, plant growth regulators can be sprayed using controlled spraying equipment to regulate the growth rate and branching density of the target vegetation on the slope. The spraying equipment can be a dedicated spraying module mounted on a drone or a remote spraying vehicle; the plant growth regulator is an environmentally friendly chemical or biological agent that alters plant growth characteristics by intervening in hormone levels or physiological and biochemical processes within the plant. By uniformly spraying the target vegetation on extremely steep slopes using drones or similar equipment, chemical methods effectively control excessively rapid vegetation growth and reduce branching density, achieving a similar effect to physical pruning in managing flood resistance.

[0077] In this embodiment of the invention, for extremely steep slopes with complex terrain where conventional physical pruning is not feasible, a slope parameter identification and chemical regulation substitution mechanism is introduced. By automatically switching to spraying environmentally friendly plant growth regulators when the slope exceeds the standard, this not only overcomes the safety limitations of complex terrain on manual and mechanical pruning operations and ensures that the flood resistance of each slope section of the entire river can be comprehensively and dynamically controlled, but also greatly reduces the operation and maintenance risks in high-risk areas, further improving the applicability and robustness of the dynamic safety regulation system for ecological dikes.

[0078] This invention also provides a carbon-negative ecological dike. Figure 6This is a structural schematic diagram of the negative carbon type ecological dike provided by the present invention, as shown below. Figure 6 As shown, this carbon-negative ecological embankment includes: The core fill layer of the dike is 610, which is located in the internal area of ​​the negative carbon ecological dike. The negative carbon matrix layer 620 covers the outer slope of the core fill layer of the dike, and the negative carbon matrix layer is filled with carbon fixation medium. The root-guiding device 630 is buried in the negative carbon matrix layer and is filled with an induction medium for inducing plant growth. The flexible vegetation layer 640 is planted on the surface of the negative carbon matrix layer. The roots of the plants contained in the flexible vegetation layer are guided by the root-guiding device to penetrate into the negative carbon matrix layer, forming a root-soil complex.

[0079] Specifically, in a carbon-negative ecological embankment, the core fill layer forms the skeleton and foundation support of the entire embankment structure, typically composed of conventional engineered compacted soil or undisturbed soil. Located in the center and deep interior of the embankment, it primarily fulfills the core functions of preventing flood infiltration and maintaining the overall macroscopic stability of the embankment.

[0080] On the outer slopes of the core fill layer of the dike, including the water-facing and back slopes, a negative carbon matrix layer is applied. This negative carbon matrix layer is composed of undisturbed soil, a solidifying agent, and carbon-fixing media (such as biochar particles or industrial solid waste particles treated for desulfurization and denitrification) mixed uniformly in a specific ratio and compacted in layers. The carbon-fixing media is uniformly filled within this matrix layer. Due to its extremely stable chemical properties, this matrix layer not only improves the soil's pore structure but, more importantly, acts as a huge physical reservoir, achieving long-term stable sequestration of carbon elements such as carbon dioxide. This gives the entire dike project the characteristics of net negative carbon at the material level.

[0081] Deep within the negative carbon matrix layer, a root-guiding device (such as a porous root-guiding tube) is buried. This device is typically buried at a depth exceeding the design flood scour line. Inside the root-guiding device, a specially formulated induction medium rich in nutrients essential for plant growth (such as phosphorus and potassium) is filled. This structural design creates a persistent nutrient-attracting target point deep underground, leveraging the plant roots' natural tendency to seek fertilizer and water to strongly stimulate and guide the roots of surface vegetation to break free from the constraints of shallow soil and actively grow and take root in deeper areas through the pores of the root-guiding device or the surrounding matrix.

[0082] On the outermost layer of the negative carbon matrix, a flexible vegetation layer is planted, consisting of a community of deep-rooted flexible plants (such as dawn redwood and willow). During their growth and development, the roots of these plants are keenly aware of the induction medium released by the deep underground root-guiding devices, and are thus directionally guided to continuously penetrate the shallow soil, deeply rooting themselves into and penetrating the negative carbon matrix layer. Their vast and deep root network is tightly intertwined, bonded, and anchored with the carbon-fixing medium in the matrix, clumping together deep underground, ultimately forming a root-soil composite with excellent mechanical properties.

[0083] The carbon-negative ecological embankment provided by this invention, through a multi-layered composite structure design, combines the core fill layer of the embankment that forms the water-blocking framework, the carbon-negative matrix layer that achieves carbon sequestration, the root-guiding device that induces deep root growth, and the flexible vegetation layer that provides flexible surface protection and underground biological reinforcement. This not only completely abandons the traditional high-carbon-emission hard slope protection mode and achieves significant carbon reduction and carbon sequestration benefits, but also makes full use of the high-strength root-soil composite structure constructed by the deep root system and the carbon-negative matrix as mechanical support. While maintaining the natural ecological continuity of the river channel, it greatly improves the structural safety and toughness of the embankment in resisting flood erosion and slope slippage.

[0084] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware, 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. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for constructing a carbon-negative ecological embankment, characterized in that, include: A negative carbon matrix is ​​prepared based on undisturbed soil, carbon fixation medium, and solidifying agent; The negative carbon matrix is ​​laid in layers in the structural layer of the dike, and root-guiding devices are buried in the negative carbon matrix to construct a composite slope protection for the dike. Target vegetation is planted on the composite slope of the dike so that the roots of the target vegetation are guided by the root guiding device to grow into the deep area of ​​the negative carbon matrix, forming a root-soil composite, thereby completing the construction of the negative carbon ecological dike. The process of laying the negative carbon matrix in layers within the embankment structure and embedding root-guiding devices within the negative carbon matrix to construct a composite embankment slope protection includes: The negative carbon matrix is ​​compacted in layers within the dike structure until a preset compaction thickness is reached. During the layered compaction process of the negative carbon matrix, a root-guiding device is embedded in the negative carbon matrix. The root-guiding device is a porous root-guiding tube filled with an induction medium. The bottom of the porous root tube is extended downward to a preset scour depth to construct a composite slope protection for the dike.

2. The method for constructing a negative carbon ecological embankment according to claim 1, characterized in that, The negative carbon matrix, based on undisturbed soil, carbon fixation medium, and solidifying agent, comprises: Obtain biochar particles with a porous structure or industrial solid waste particles that have undergone desulfurization and denitrification treatment, and use the biochar particles or the industrial solid waste particles as the carbon fixation medium. Determine the mixing ratio of the undisturbed soil, the carbon fixation medium, and the curing agent, and mix the undisturbed soil, the carbon fixation medium, and the curing agent uniformly according to the mixing ratio to obtain the negative carbon matrix.

3. The method for constructing a negative carbon ecological embankment according to claim 1 or 2, characterized in that, The process involves planting target vegetation on the composite slope protection of the embankment, guiding the roots of the target vegetation to grow into the deeper areas of the negative carbon matrix through the root-guiding device, forming a root-soil complex to complete the construction of the negative carbon ecological embankment. This process further includes: Obtain root pull-out mechanical test data corresponding to the target vegetation; Based on the root pull-out mechanical test data, the anti-sliding safety factor corresponding to the root-soil composite was determined; Based on the aforementioned anti-sliding safety factor, the thickness of the interlocking blocks on the slope of the composite revetment is adjusted.

4. The method for constructing a negative carbon ecological embankment according to claim 1 or 2, characterized in that, The process involves planting target vegetation on the composite slope protection of the embankment, guiding the roots of the target vegetation to grow into the deeper areas of the negative carbon matrix through the root-guiding device, forming a root-soil complex to complete the construction of the negative carbon ecological embankment. This process further includes: Obtain the vegetation parameters of the target vegetation, including vegetation height and vegetation canopy closure; Based on the vegetation parameters, the real-time hydrodynamic parameters of the composite slope protection of the embankment are determined. The water level increment and the safety factor of the root-soil composite are evaluated based on the real-time hydrodynamic parameters. If the water level increment exceeds the water level increment threshold and / or the safety factor is lower than the safety factor threshold, a pruning strategy for the target vegetation is generated.

5. The method for constructing a negative carbon type ecological embankment according to claim 4, characterized in that, The determination of the real-time hydrodynamic parameters of the composite slope protection of the dike based on the vegetation parameters includes: Based on the vegetation parameters, determine the three-dimensional biomass corresponding to the target vegetation; Based on the vegetation parameters and the three-dimensional biomass, the real-time hydrodynamic parameters of the embankment composite slope protection are determined.

6. The method for constructing a negative carbon ecological embankment according to claim 5, characterized in that, The assessment of water level increment and the safety factor of the root-soil composite based on the real-time hydrodynamic parameters includes: Simulate the water level increment caused by the aforementioned real-time hydrodynamic parameters; The safety factor of the root-soil complex is assessed based on the water level increment and the three-dimensional biomass.

7. The method for constructing a negative carbon ecological embankment according to claim 4, characterized in that, The generation of a pruning strategy for the target vegetation further includes: Obtain the biomass waste generated after pruning based on the pruning strategy; The pyrolysis equipment is controlled to convert the biomass waste into derived carbon sequestration media; The derived carbon fixation medium is backfilled onto the back slope of the composite revetment of the dike.

8. The method for constructing a negative carbon ecological embankment according to claim 4, characterized in that, The generation of a pruning strategy for the target vegetation further includes: Identify the slope parameters of the target construction slope segment corresponding to the pruning strategy; If the slope parameter exceeds the slope threshold, the spraying equipment is controlled to spray plant growth regulators to control the growth rate and branching density of the target vegetation.

9. A carbon-negative ecological embankment, characterized in that, include: The core fill layer of the dike is located in the internal area of ​​the negative carbon ecological dike. A negative carbon matrix layer covers the outer slope of the core fill layer of the dike, and the negative carbon matrix layer is filled with a carbon fixation medium. A root-guiding device is embedded in the negative carbon matrix layer, and the root-guiding device is filled with an induction medium for inducing plant growth. A flexible vegetation layer is planted on the surface of the negative carbon matrix layer. The roots of the plants contained in the flexible vegetation layer are guided by the root guiding device to penetrate into the negative carbon matrix layer, forming a root-soil complex.

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