Method of creating characteristics of landscape along river in high water level difference change of ancient city in block

Abstract

The application discloses a kind of methods for creating characteristics of high water level difference change of piece area ancient city along river landscape zone, comprising: obtaining the historical hydrological data of the construction area of along river landscape zone, real-time water level monitoring data and geological survey data;Establish the digital elevation model of construction area, and construct two-dimensional hydrodynamic model coupled with digital elevation model;The construction area is sequentially divided into at least four core functional areas from bottom to top along the elevation gradient;Select and configure the plant community with corresponding flood tolerance, moisture tolerance and erosion resistance;Design and build landscape structures with adaptive function and form;Dynamic adjustment and maintenance are carried out to plant community and landscape structures.The application solves the problem that the design of the existing ancient city along river landscape zone cannot effectively adapt to the dynamic change of high water level difference, resulting in low plant survival rate, unstable landscape effect, missing ecological function and incoordination between structure and hydrological environment.

Description

Technical Field

[0001] This invention relates to the field of riverside landscape design technology, specifically to a method for creating distinctive riverside landscape features based on changes in the high water level difference of an ancient city area. Background Technology

[0002] In some ancient cities, the water level along the riverbank fluctuates greatly, and the scouring effect of the river is significant, making it difficult to plant and ensure the survival of vegetation. The existing riverside landscape design of the ancient cities has failed to effectively adapt to the dynamic changes in water level differences, resulting in low plant survival rates, unstable landscape effects, lack of ecological functions, and disharmony between structures and the hydrological environment. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, a method for creating distinctive riverside landscape belts in ancient cities with varying water levels is provided. This method addresses the problems of existing riverside landscape belt designs failing to effectively adapt to dynamic changes in water levels, resulting in low plant survival rates, unstable landscape effects, lack of ecological functions, and disharmony between structures and the hydrological environment.

[0004] To achieve the above objectives, a method for creating distinctive riverside landscape belts based on changes in water level differences within an ancient city area is provided, comprising the following steps: Obtain historical hydrological data, real-time water level monitoring data, and geological survey data of the construction area along the river landscape belt; Based on the historical hydrological data, the real-time water level monitoring data, and the geological survey data, a digital elevation model of the construction area is established, and a two-dimensional hydrodynamic model coupled with the digital elevation model is constructed to accurately simulate the inundation analysis results of the construction area under flood events with different return periods. Based on the inundation analysis results, the construction area is divided into at least four core functional zones from bottom to top along the elevation gradient. The at least four core functional zones are a deep-water ecological conservation zone, a tidal drawdown suitable zone, a seasonal flood buffer zone, and a highland safe recreation zone. For suitable areas during tidal drawdown and buffer zones during seasonal floods, select and configure plant communities with corresponding flood tolerance, moisture tolerance and erosion resistance. For the connecting areas of the tidal drawdown suitable habitat, the seasonal flood buffer zone and the highland safe recreation area, design and construct landscape structures with appropriate functions and forms. Based on the continuous monitoring results of the hydrological and ecological conditions in the construction area, the plant community and the landscape structures are dynamically adjusted and maintained.

[0005] Furthermore, the flooding analysis results include the flooding range, flooding depth, flooding duration, and distribution of water flow scour intensity.

[0006] Furthermore, when selecting and configuring plant communities with corresponding flood tolerance, moisture tolerance, and erosion resistance in the tidal drawdown suitable area, the following steps are included: Within the tidal drawdown suitable area, micro-topography reshaping is carried out; The reshaped micro-topography is then modified and solidified with a planting substrate. On the improved planting substrate, emergent plants are planted in the frequently flooded areas at the lower elevation of the suitable tidal range, flood-tolerant wetland plants are planted in the frequently flooded areas at the middle elevation of the suitable tidal range, and a mixed community of trees and grasses is planted in the occasionally flooded areas at the higher elevation of the suitable tidal range.

[0007] Furthermore, when planting the emergent plants, the emergent plants are first cultivated in seedling blocks, then the seedling blocks are implanted into the improved planting substrate, and finally anchoring piles are set around the seedling blocks to prevent the emergent plants from drifting.

[0008] Furthermore, the micro-topography includes micro-terraces, gentle slopes, or depressions with a height difference of 0.3 to 1.5 meters.

[0009] Furthermore, when selecting and configuring plant communities with corresponding flood tolerance, moisture tolerance, and erosion resistance for the aforementioned seasonal flood buffer zone, the following steps are included: On the slope of the seasonal flood buffer zone, fish-scale pits are excavated along the contour lines, with the openings of the fish-scale pits facing the upper side of the slope. The plant community of the seasonal flood buffer zone is designed as a multi-layered, uneven-aged mixed forest community structure with native, stress-resistant trees as the framework, shrubs as the filling, and ground cover as the cover. The native, resilient trees are planted in the center of the fish-scale pit, the shrubs are planted at the edges of the fish-scale pit, and the ground cover is planted on the rest of the slope.

[0010] Furthermore, a retaining wall is installed on the water-facing side of the fish-scale pit, and a reverse filter geotextile is laid on the water-repellent side of the retaining wall.

[0011] Furthermore, the horizontal projection of the fish-scale pit is semi-circular.

[0012] Furthermore, after the two-dimensional hydrodynamic model is constructed, the key parameters of the two-dimensional hydrodynamic model are calibrated and verified using water level and flow velocity data from at least two measured flood events of different magnitudes. The key parameters include the channel roughness coefficient, turbulent viscosity coefficient, and sediment transport model parameters.

[0013] Furthermore, the step of dynamically adjusting and maintaining the plant community and the landscape structures based on continuous monitoring results of the hydrological and ecological conditions within the construction area includes: Sensors are installed in the existing riverside landscape belt to collect monitoring data, including water level, soil moisture, plant growth and settlement displacement of the landscape structures. When the monitored data exceeds a preset threshold, personnel intervention measures are implemented; Every spring and autumn, based on the previous year's hydrological rhythm changes and plant growth conditions, some poorly growing plants are replaced or replanted, and localized erosion-affected micro-topography is restored. The beneficial effects of this invention lie in its method for creating distinctive riverside landscape belts in areas with varying water levels in ancient cities. This method discloses a systematic approach to creating landscape belts in riverside areas with varying water levels. The method involves precise hydrogeological analysis to classify ecological functions and then strategically configuring specific water-tolerant plant communities and adaptive engineering structures (such as porous ecological revetments and elevated walkways) for different areas to construct a resilient and stable riverbank system capable of withstanding and adapting to drastic water level changes. While this method surpasses traditional riverbank engineering, its essential purpose and key technical measures are to protect and stabilize riverbanks, preventing erosion and damage under dynamic water flow, and thereby achieving both ecological and landscape functions. Therefore, the plant-engineering composite system constructed by this invention represents a modern and advanced form of "riverbank protection device" with significant potential for widespread application. Detailed Implementation

[0014] The present application will now be described in further detail with reference to the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit the invention.

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0016] This invention provides a method for creating distinctive riverside landscape belts based on changes in water level differences within an ancient city area, comprising the following steps: S1. Obtain historical hydrological data, real-time water level monitoring data, and geological survey data of the construction area along the river landscape belt.

[0017] Historical hydrological data includes, but is not limited to, daily maximum, minimum and average water level records for more than ten consecutive years, historical extreme flood levels, historical extreme low water levels, and water velocity profile data at the corresponding water levels.

[0018] Real-time hydrological monitoring data includes hourly data on water level, flow velocity, and sediment content collected over a continuous period of more than twelve months using water level sensors, flow meters, and turbidity meters deployed within the construction area.

[0019] Geological survey data includes parameters such as the composition of soil and rock on the riverbank slope, permeability coefficient, porosity, and shear strength obtained by drilling holes at intervals of no more than fifty meters along a direction perpendicular to the riverbank.

[0020] S2. Based on historical hydrological data, real-time water level monitoring data and geological survey data, establish a digital elevation model of the construction area, and construct a two-dimensional hydrodynamic model coupled with the digital elevation model to accurately simulate the inundation analysis results of the construction area under flood events with different return periods.

[0021] In this embodiment, the flooding analysis results include the flooding range, flooding depth, flooding duration, and distribution of water flow scour intensity.

[0022] Based on historical hydrological data, real-time water level monitoring data, and geological survey data of the construction area along the river landscape belt, a digital elevation model (DEM) of the construction area was established, and a two-dimensional hydrodynamic model coupled with the DEM was constructed to accurately simulate the inundation range, inundation depth, inundation duration, and water flow scour intensity distribution under flood events with different return periods.

[0023] After constructing the two-dimensional hydrodynamic model, the key parameters of the two-dimensional hydrodynamic model were calibrated and verified using water level and flow velocity data from at least two measured flood events of different magnitudes. The key parameters included the channel roughness coefficient, turbulent viscosity coefficient, and sediment transport model parameters.

[0024] S3. Based on the inundation analysis results, the construction area is divided into at least four core functional zones from bottom to top along the elevation gradient. The at least four core functional zones are the deep-water ecological conservation zone, the tidal drawdown suitable zone, the seasonal flood buffer zone, and the highland safe recreation zone.

[0025] The lower limit of the elevation of the deep-water ecological conservation area is the historical extreme low water level, and the upper limit of the elevation is the multi-year average low water level.

[0026] The lower limit of the suitable elevation zone for tidal drawdown is the multi-year average low water level, and the upper limit of the elevation is the multi-year average high water level.

[0027] The lower limit of the seasonal flood buffer zone is the multi-year average high water level, and the upper limit is the five-year flood level.

[0028] The elevation of the highland safe recreation area is above the 5-year flood level.

[0029] For each core functional area, its spatial perimeter is precisely marked, and its corresponding design flooding frequency, longest continuous flooding days, design flow velocity, and maximum scouring force are calculated.

[0030] S4. Select and configure plant communities with corresponding flood resistance, moisture resistance and erosion resistance for suitable tidal drawdown areas and seasonal flood buffer zones.

[0031] When selecting suitable areas for tidal drawdown and configuring plant communities with corresponding flood tolerance, moisture tolerance, and erosion resistance, the following steps are included: S41. In the suitable area for tidal drawdown, carry out micro-topography reshaping.

[0032] Micro-topography includes miniature terraces, gentle slopes, or depressions with elevation differences of 0.3 to 1.5 meters.

[0033] Within the suitable habitat of tidal drawdown, miniature terraces, gentle slopes, and depressions with height differences of 0.3 to 1.5 meters are artificially created through local excavation and filling and earthwork balancing techniques to form diverse hydrological habitats and provide a survival base for plants in different ecological niches.

[0034] The slope of a miniature terrace is no more than 5%, while the slope of a gentle slope is between 5% and 15%. Depressions are used to collect and retain water during low tide.

[0035] S42. Improve and solidify the planting substrate for the reshaped micro-topography.

[0036] For the reshaped micro-topography, lay an improved planting substrate with a thickness of not less than 300 mm. The improved planting substrate is a mixture of 50% to 60% by weight of local native soil, 20% to 30% by weight of coarse sand, 10% to 15% by weight of organic fertilizer, and 5% to 10% by weight of water-retaining agent.

[0037] The local native soil is first screened to remove stones and plant root residues larger than 50 mm. The organic fertilizer to be mixed is then tested for compostability to ensure that its carbon-nitrogen ratio (C / N) is between 25:1 and 30:1 and its moisture content is below 40%, in order to avoid secondary fermentation in a flooded environment, which could damage the plant roots.

[0038] On the water-facing side and along the water flow path, a soil stabilizer of 1% to 3% by weight is further mixed into the improved planting substrate, and a three-dimensional soil stabilizing net is laid on the surface. The mesh size of the three-dimensional soil stabilizing net is 20 mm × 20 mm to 50 mm × 50 mm, and the material is UV-resistant polypropylene.

[0039] S43. On the improved planting substrate, emergent plants are planted in the frequently flooded areas at the lower elevation of the suitable tidal range, flood-tolerant wetland plants are planted in the frequently flooded areas at the middle elevation of the suitable tidal range, and tree-grass composite communities are planted in the occasionally flooded areas at the higher elevation of the suitable tidal range.

[0040] The suitable habitat for tidal drawdown is further divided into three sub-regions: the frequently flooded region, the periodically flooded region, and the occasionally flooded region.

[0041] The elevation range of the perpetually flooded area is between the multi-year average low water level and the 30th percentile annual water level, and its design inundation frequency is greater than 200 days / year.

[0042] The elevation range of the flood-prone area is between the 30th percentile and the 70th percentile of the annual water level, and its designed flooding frequency is 50 to 200 days per year.

[0043] The elevation range of the intermittent flood zone is between the 70th percentile annual water level and the multi-year average high water level, and its design flooding frequency is 10 to 50 days per year.

[0044] More refined plant species and micro-topography configurations were carried out for these three sub-regions.

[0045] On the improved substrate, planting is carried out in strips from bottom to top along the elevation.

[0046] In the water-adjacent area with the lowest elevation, emergent plants, mainly reeds, calamus, and water chestnuts, are planted at a density of 20 to 30 clumps per square meter.

[0047] In the frequently flooded areas at the mid-elevation level, flood-tolerant wetland plants, mainly Bermuda grass, Zoysia japonica, and weeping willow, are planted. Herbaceous plants are sown or turfed, while woody plants are spaced 3 to 5 meters apart.

[0048] In intermittently flooded areas at higher elevations, water-tolerant trees, mainly pond cypress, bald cypress, and maple, are planted, along with ornamental grasses such as pampas grass and cogon grass, to form a mixed tree-grass community.

[0049] When planting emergent plants, first cultivate the emergent plants in seedling blocks, then implant the seedling blocks into the improved planting substrate, and finally set anchor piles around the seedling blocks to prevent the emergent plants from drifting.

[0050] Specifically, the cultivation method for emergent plants involves pre-cultivating them in a greenhouse in seedling blocks with biodegradable plant fiber containers. The seedling blocks are 100 mm × 100 mm × 120 mm in size. At the planting site, the seedling blocks, along with their containers, are implanted into the substrate, with the top of the container 30-50 mm below the substrate surface. Each seedling block is then anchored with three 300 mm long bamboo stakes arranged in an equilateral triangle around it to prevent the plants from drifting due to initial water flow.

[0051] When selecting and configuring plant communities with corresponding flood tolerance, moisture tolerance, and erosion resistance for seasonal flood buffer zones, the following steps are included: S44. On the slope of the seasonal flood buffer zone, dig fish-scale pits along the contour lines, with the pit openings facing the upper side of the slope.

[0052] On slopes within seasonal flood buffer zones, fish-scale pits are excavated along contour lines to serve as planting holes. The horizontal projection of each fish-scale pit is semi-circular, with a diameter of 1.5 to 2.0 meters and a depth of 0.6 to 0.8 meters. The opening of the pit faces uphill. The horizontal spacing between pits is 4 to 6 meters, and the vertical spacing is 3 to 5 meters.

[0053] S45. Design the plant community for the seasonal flood buffer zone. The plant community for the seasonal flood buffer zone shall be a multi-layered mixed forest community structure with native stress-resistant trees as the framework, shrubs as the filling, and ground cover as the cover.

[0054] The design uses native, resilient trees as the framework, shrubs as filler, and ground cover as the cover to create a multi-layered, uneven-aged mixed forest community structure.

[0055] The tree layer should primarily consist of species with deep root systems, strong wind resistance, and the ability to withstand short-term high-velocity water flow impacts, including but not limited to Chinese tallow tree, hackberry, and Chinese pistache.

[0056] For the shrub layer, select tree species with flexible branches and strong recovery ability after flooding, including but not limited to Vitex negundo and Amorpha fruticosa.

[0057] The ground cover layer should consist of vines or herbaceous plants with well-developed root systems and strong soil-fixing capabilities, including but not limited to ivy and Zoysia japonica.

[0058] S46. Plant native, resilient trees in the center of the fish-scale pit, shrubs on the edge of the fish-scale pit, and ground cover on the rest of the slope.

[0059] Long-lasting organic compound fertilizer was applied to the bottom of the pit, and trees were planted in the center of the fish-scale pit, while shrubs were planted on the edge of the pit, in order to maximize the interception of surface runoff and sediment.

[0060] A retaining wall is installed on the water-facing side of the fish-scale pit. A reverse-filter geotextile is laid on the water-repellent side of the retaining wall.

[0061] Specifically, on the water-facing side of the fish-scale pit, i.e., the downslope side, a crescent-shaped retaining wall with a height of 0.4 to 0.6 meters is constructed using local rubble or ecological gabions. The retaining wall is a dry-laid structure, with gaps of 10 to 30 millimeters between the rubble to ensure permeability. A layer of geotextile is laid tightly against the inside of the retaining wall to prevent matrix loss. The geotextile has a unit area mass of not less than 150 grams per square meter and a permeability coefficient greater than 0.1 centimeters per second.

[0062] S5. Design and construct landscape structures that are appropriate in function and form for at least four core functional areas.

[0063] The design and construction of adaptive structures for tidal drawdown habitats, including the construction of at least one porous ecological revetment.

[0064] The structure of a porous ecological revetment, from bottom to top, includes: a base layer, a main protective layer, and a surface vegetation layer.

[0065] The foundation layer is buried at least 1.0 meter below the riverbed scour line, using Reno mattresses or large riprap structures.

[0066] The main protective layer is constructed using interlocking precast concrete ecological blocks for dry or mortar masonry. The ecological blocks have pre-drilled through holes, with a porosity of 25% to 40% of the total block volume. The holes are filled with a mixture of graded crushed stone and planting soil.

[0067] The interlocking precast concrete eco-blocks are designed with an "I" or "X" shape, allowing the blocks to interlock and lock together to form a unified load-bearing structure. The concrete strength grade of the blocks is no less than C30, and 1% to 2% by weight of polypropylene fiber is incorporated into the concrete to improve its impact resistance. The water-facing surface of the blocks is designed with a rough or textured surface to increase the roughness of the water flow, reduce near-shore water energy, and provide an attachment substrate for aquatic organisms.

[0068] The surface vegetation layer consists of pre-selected wetland or aquatic plants artificially planted in the holes and gaps of the main protective layer.

[0069] An elevated waterfront boardwalk system was designed and constructed to connect the seasonal flood buffer zone with the elevated safe recreation area. The elevated waterfront boardwalk system includes pile foundations, main beams, secondary beams, and panels.

[0070] The pile foundation uses reinforced concrete bored piles with a diameter of 300 mm to 500 mm, and the pile top elevation is precisely set to be more than 0.5 meters above the five-year flood level.

[0071] The main beams and secondary beams are made of hot-dip galvanized H-beams or anti-corrosion treated plywood.

[0072] The panel uses a grid structure with 10 to 15 millimeters of slit width to ensure that horizontal impact is minimized during floods and that sunlight and rainwater can penetrate to the vegetation below.

[0073] The grating panels used in the elevated waterfront boardwalk are made of fiberglass reinforced polymer (FRP) composite material. This material has a strength-to-weight ratio no less than that of steel and is completely resistant to rust and electrochemical corrosion. The surface of the grating panels is treated with anti-slip material by molding a layer of quartz sand particles onto the surface in one piece, so that its static friction coefficient is still greater than 0.6 under wet or flooded conditions, thus ensuring the safety of tourists in different weather conditions.

[0074] The elevated waterfront boardwalk system features a segmented safety structure. Every 50 meters along the boardwalk's total length, a reinforced section is installed. The pile diameter of this reinforced section is increased to 600 mm, and diagonal supports are added. At the connection between the boardwalk and the elevated safe recreation area, a flexible hinged joint is used, allowing the boardwalk to undergo a certain degree of displacement without breaking under extreme flood impact. The safety railings on both sides of the boardwalk are designed to be detachable or collapsible, with quick-release snap-fit ​​connections between the posts and panels. This allows maintenance personnel to remove or collapse the railings within two hours of a flood warning being issued, further reducing water resistance.

[0075] Design and construct floating landscape platforms within tidal range suitable for habitation. The floating landscape platform comprises pontoon modules, an anchoring system, connecting bridges, and the platform surface layer.

[0076] The pontoon modules are made of high-density polyethylene (HDPE) through rotational molding and filled with closed-cell polystyrene foam. Each pontoon module provides buoyancy of not less than 400 kg / m².

[0077] The anchoring system uses a combination of gravity anchor blocks and high-strength polymer cables. The length of the cables is redundantly designed according to the range of water level changes and is adjusted by a self-tensioning device installed on the cables.

[0078] The floating landscape platform is connected to the shoreline or elevated waterfront boardwalk via one or more articulated connecting bridges. One end of the connecting bridge is fixed to the floating platform via a spherical universal joint, while the other end is connected to the shore foundation or boardwalk structure via a horizontal axis hinge. This allows the connecting bridge to accommodate both the vertical movement of the platform due to water level changes and the horizontal swaying of the platform due to water flow. The slope of the connecting bridge remains within 1:8 throughout its length, between historical extreme low water levels and historical extreme flood levels.

[0079] S6. Based on the continuous monitoring results of the hydrological and ecological conditions in the construction area, dynamically adjust and maintain the plant communities and landscape structures.

[0080] Planting and construction of structures are carried out in a coordinated manner according to the established spatial layout and technical standards. After completion, the plant community and structures are dynamically adjusted and maintained based on the results of continuous monitoring of hydrological and ecological conditions.

[0081] Specifically, step S6, based on continuous monitoring results of the hydrological and ecological conditions within the construction area, involves the dynamic adjustment and maintenance of plant communities and landscape structures, including: S61. Within the existing riverside landscape belt, sensors are installed to collect monitoring data, including water level, soil moisture, plant growth, and settlement and displacement of landscape structures.

[0082] S62. When the monitoring data exceeds the preset threshold, implement personnel intervention measures.

[0083] When monitoring data shows that the water level is about to exceed the flood tolerance threshold for plants or the design safety threshold for structures in a certain functional area, the system will automatically trigger an early warning and generate an emergency plan to guide personnel to intervene. Intervention measures include activating a temporary drainage system, reinforcing specific structures, or evacuating personnel.

[0084] S63. Every spring and autumn, based on the changes in hydrological rhythms and plant growth conditions of the previous year, some poorly growing plants are replaced or replanted, and local micro-topography that has been eroded is repaired.

[0085] Every spring and autumn, based on the assessment report of hydrological rhythm changes and plant growth status over the past year, some poorly growing plants are replaced or replanted, or localized eroded micro-topography is repaired, and the anchoring system of floating facilities is inspected and tension adjusted.

[0086] The present invention provides a method for creating distinctive riverside landscape belts in ancient cities with varying water levels, aiming to address the problems of existing riverside landscape belt designs failing to effectively adapt to dynamic changes in water levels, resulting in low plant survival rates, unstable landscape effects, lack of ecological functions, and incompatibility between structures and the hydrological environment. This method involves dividing the riverside area into eco-hydrological zones based on elevation and inundation frequency, and then collaboratively configuring plant communities with specific flood-resistant characteristics, adaptive ecological structures, and dynamic landscape elements for different zones. This constructs a resilient landscape system that can proactively adapt to drastic periodic changes in water levels, combining ecological functions with aesthetic value.

[0087] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A method for creating distinctive riverside landscape belts based on changes in water level differences within an ancient city area, characterized in that: Includes the following steps: Obtain historical hydrological data, real-time water level monitoring data, and geological survey data of the construction area along the river landscape belt; Based on the historical hydrological data, the real-time water level monitoring data, and the geological survey data, a digital elevation model of the construction area is established, and a two-dimensional hydrodynamic model coupled with the digital elevation model is constructed to accurately simulate the inundation analysis results of the construction area under flood events with different return periods. Based on the inundation analysis results, the construction area is divided into at least four core functional zones from bottom to top along the elevation gradient. The at least four core functional zones are a deep-water ecological conservation zone, a tidal drawdown suitable zone, a seasonal flood buffer zone, and a highland safe recreation zone. For suitable areas during tidal drawdown and buffer zones during seasonal floods, select and configure plant communities with corresponding flood tolerance, moisture tolerance and erosion resistance. For the connecting areas of the tidal drawdown suitable habitat, the seasonal flood buffer zone and the highland safe recreation area, design and construct landscape structures with appropriate functions and forms. Based on the continuous monitoring results of the hydrological and ecological conditions in the construction area, the plant community and the landscape structures are dynamically adjusted and maintained.

2. The method for creating distinctive riverside landscape belts based on the high water level difference in the ancient city area according to claim 1, characterized in that, The flooding analysis results include the flooding range, flooding depth, flooding duration, and distribution of water flow scour intensity.

3. The method for creating distinctive riverside landscape belts based on the high water level difference in the ancient city area according to claim 1, characterized in that, When selecting suitable areas for tidal drawdown and configuring plant communities with corresponding flood tolerance, moisture tolerance, and erosion resistance, the following steps are included: Within the tidal drawdown suitable area, micro-topography reshaping is carried out; The reshaped micro-topography is then modified and solidified with a planting substrate. On the improved planting substrate, emergent plants are planted in the frequently flooded areas at the lower elevation of the suitable tidal range, flood-tolerant wetland plants are planted in the frequently flooded areas at the middle elevation of the suitable tidal range, and a mixed community of trees and grasses is planted in the occasionally flooded areas at the higher elevation of the suitable tidal range.

4. The method for creating distinctive riverside landscape belts based on the high water level difference in the ancient city area according to claim 3, characterized in that, When planting the emergent plants, the emergent plants are first cultivated in seedling blocks, then the seedling blocks are implanted into the improved planting substrate, and finally anchoring piles are set around the seedling blocks to prevent the emergent plants from drifting.

5. The method for creating distinctive riverside landscape belts based on the high water level difference in the ancient city area according to claim 3, characterized in that, The micro-topography includes micro-terraces, gentle slopes, or depressions with a height difference of 0.3 to 1.5 meters.

6. The method for creating distinctive riverside landscape belts based on the high water level difference in the ancient city area according to claim 1, characterized in that, When selecting and configuring plant communities with corresponding flood tolerance, moisture tolerance, and erosion resistance for the aforementioned seasonal flood buffer zone, the following steps are included: On the slope of the seasonal flood buffer zone, fish-scale pits are excavated along the contour lines, with the openings of the fish-scale pits facing the upper side of the slope. The plant community of the seasonal flood buffer zone is designed as a multi-layered, uneven-aged mixed forest community structure with native, stress-resistant trees as the framework, shrubs as the filling, and ground cover as the cover. The native, resilient trees are planted in the center of the fish-scale pit, the shrubs are planted at the edges of the fish-scale pit, and the ground cover is planted on the rest of the slope.

7. The method for creating distinctive riverside landscape belts based on the high water level difference in the ancient city area according to claim 6, characterized in that, A retaining wall is installed on the water-facing side of the fish-scale pit, and a reverse filter geotextile is laid on the water-repellent side of the retaining wall.

8. The method for creating distinctive riverside landscape belts based on the high water level difference in the ancient city area according to claim 6, characterized in that, The horizontal projection of the fish-scale pit is semi-circular.

9. The method for creating distinctive riverside landscape belts based on the high water level difference in the ancient city area according to claim 1, characterized in that, After the two-dimensional hydrodynamic model is constructed, the key parameters of the two-dimensional hydrodynamic model are calibrated and verified using water level and flow velocity data from at least two measured flood events of different magnitudes. The key parameters include the channel roughness coefficient, turbulent viscosity coefficient, and sediment transport model parameters.

10. The method for creating distinctive riverside landscape belts based on the high water level difference in the ancient city area according to claim 1, characterized in that, The steps for dynamically adjusting and maintaining the plant community and landscape structures based on continuous monitoring of the hydrological and ecological conditions within the construction area include: Sensors are installed in the existing riverside landscape belt to collect monitoring data, including water level, soil moisture, plant growth and settlement displacement of the landscape structures. When the monitored data exceeds a preset threshold, personnel intervention measures are implemented; Every spring and autumn, based on the hydrological rhythm changes and plant growth conditions of the previous year, some poorly growing plants are replaced or replanted, and localized eroded micro-topography is repaired.