Historical urban area login protection range delimiting method based on heritage value equivalent space measurement

Abstract

The invention provides a historical urban area login protection range delimiting method based on heritage value equivalent space measurement. The method specifically comprises the following five steps: constructing an urban space heritage resource basic data set, assigning an individual heritage value equivalent in an urban space, calculating the urban space heritage value equivalent, performing spatial clustering on the urban space heritage value equivalent, identifying a high-magnitude area, and delimiting a historical urban area login protection range. Through multi-dimensional quantitative evaluation, scientificity and objectivity of heritage value evaluation are improved, more accurate technical support and decision basis are provided for urban heritage protection and utilization, and a more accurate historical urban area login protection range is obtained; the problems that in an existing historical urban area protection delimiting method, assignment subjectivity is high, index element repeatability is high, and model application scene compatibility is insufficient are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of urban planning, and in particular to a method for delineating the registration and protection scope of a historical urban area based on spatial measurement of heritage value equivalents. Background Art

[0002] Historic urban areas are crucial spatial units that carry historical memories and cultural values during urban development and are legally protected areas for historic and cultural cities. Internationally, the Council on Monuments and Sites (ICOMOS) adopted the "Charter for the Preservation of Historic Towns and Urban Districts" in Washington, D.C., in 1987, proposing the protection of historic urban areas. In China, the concept of conservation planning for historic and cultural cities has been formally proposed since 1982. However, in subsequent planning and practice, historic urban areas have often been viewed as an abstract and broad category, difficult to pinpoint and effectively implement in physical space. To overcome this limitation, planning strategies have gradually shifted to using historic blocks as the vehicle for specific conservation and implementation. Despite this, conservation efforts and effectiveness remain insufficient, failing to fully encompass and demonstrate the overall appearance and cultural value of historic urban areas. Consequently, the 2018 "Standards for Conservation Planning of Historic and Cultural Cities" explicitly mandated the delineation of the conservation scope of historic urban areas and the implementation of corresponding planning controls in city conservation plans.

[0003] The existing methods for demarcating the scope of historical urban areas mainly include the following:

[0004] (1) The method of combining historical context with current relics is to determine the scope of the historical city by analyzing the historical development and evolution of the city and combining it with the distribution of current historical relics.

[0005] (2) A method combining qualitative and quantitative methods: Based on the analysis of historical context, quantitative technical means such as GIS are introduced to analyze the spatial location of the heritage.

[0006] (3) Historical landscape characteristics assessment method, which combines historical value with the actual landscape by identifying and evaluating historical landscape characteristics, thereby delineating the historical urban area.

[0007] (4) The method based on historical key features focuses on extracting important features in the historical development of the city as delineation clues.

[0008] (5) Spatial morphological characteristics analysis method: Based on the preliminary understanding of spatial morphology, a historical urban area demarcation method suitable for a specific city is constructed.

[0009] (6) The method based on the remaining status of the historical structural prototype emphasizes the importance of the remaining status of the historical structural prototype in demarcation.

[0010] These existing methods for demarcating historic urban areas suffer from isolated analysis (e.g., focusing solely on spatial location), subjective criteria, ambiguous value standards, and imprecise boundary delineation. Overall, due to the diverse nature of historic urban areas across cities, demarcation methods must be tailored to local conditions, and a unified paradigm has yet to emerge. Summary of the Invention

[0011] In order to overcome the defects in the above-mentioned prior art, the purpose of the present invention is to provide a method for demarcating the registration protection scope of a historical urban area based on spatial measurement of heritage value equivalent.

[0012] In order to achieve the above-mentioned object of the present invention, the present invention provides a method for delineating the registered protection scope of a historic urban area based on spatial measurement of heritage value equivalent, comprising the following steps:

[0013] S1, organize the urban heritage list based on urban spatial heritage information and build a basic dataset of urban spatial heritage resources in the GIS system;

[0014] S2, assigning the value equivalent of individual heritage in urban space;

[0015] S3, mapping the spatial coordinates of individual urban spatial heritage and their value equivalents into the GIS system to obtain the individual heritage value equivalent dataset. All individual heritage value equivalent datasets constitute the urban spatial heritage value equivalent dataset; performing density analysis on the overall value equivalent of urban spatial heritage based on the urban spatial heritage value equivalent dataset;

[0016] S4, spatial clustering is performed on the density analysis results to identify high-value areas in the urban space;

[0017] S5: Combine the individual heritage value equivalents of urban spaces and the existing road boundaries of urban land to divide regional plots, and calculate the heritage value equivalents of high-value regional plots;

[0018] The existing road land is used as the boundary to delineate the plots with high heritage value equivalent in the high-value area as the statutory protection area of the historical city, while ensuring the continuity of the plots.

[0019] Through multi-dimensional quantitative evaluation, the present invention improves the scientificity and objectivity of heritage value assessment, provides more accurate technical support and decision-making basis for urban heritage protection and utilization, and also combines heritage value equivalents and heritage spatial relationships for analysis to obtain a more accurate registration and protection scope of historical urban areas, solving the problems existing in existing historical urban area protection demarcation methods, such as "strong subjectivity in assignment", "high repetitiveness of indicator elements", and "lack of compatibility of model application scenarios".

[0020] Optionally, the urban spatial heritage information in step S1 includes heritage name, heritage type, level, coordinate information, and a base map of urban roads and terrain information in the central urban area.

[0021] Optionally, step S2 includes:

[0022] Categorize individual estate types;

[0023] assigning value equivalents to each level of each category of individual heritage;

[0024] Assign value equivalents to all individual heritage sites in the urban space based on their types and levels.

[0025] Optional, individual heritage types include four categories: historical heritage, site heritage, intangible heritage, cultural relics and archives.

[0026] Optionally, in step S3, the spatial coordinates of individual heritage in the urban space are associated and located in the GIS system to obtain an individual heritage spatial coordinate dataset, and the individual heritage value equivalent space is mapped to the GIS system to obtain an individual heritage value equivalent dataset.

[0027] Optionally, in step S4, spatial clustering is performed on the density analysis results of the overall value equivalent of urban spatial heritage, and areas with a density higher than a set value or areas in the top N% in the density ranking are selected as high-value areas.

[0028] Optionally, in step S4, the high-value area is divided into a plurality of high-value sub-areas according to the different plots;

[0029] In step S5, the regional plots are divided based on the individual heritage value equivalents of the urban space and the boundaries of the existing urban land and roads, and the heritage value equivalents of the plots in each high-value sub-region are counted; the plots with high heritage value equivalents in all high-value sub-regions are delineated with the existing road land as the boundary as the statutory protection area of the historical city, while ensuring the continuity of the plots.

[0030] Optionally, in step S5, based on the statistical results of the heritage value equivalents of the plots in the high-value area or the high-value sub-area, the heritage value equivalents of the individual plots in the high-value area or each high-value sub-area are spatially clustered, and the clustered heritage value equivalents are graded according to their levels.

[0031] The high-value area with existing road land as the boundary or the top M levels of land in the heritage value equivalent spatial cluster corresponding to each high-value sub-area are the statutory protection areas of the historic city, where M is a positive integer.

[0032] The beneficial effects of the present invention are:

[0033] The present invention constructs a method for delineating the registration and protection scope of historical urban areas based on equivalent measurement, and forms a complete system for the heritage value assessment and protection of historical urban areas from the construction of basic data sets, assignment of value equivalents, calculation of value equivalents, spatial clustering of value equivalents and delineation of protection scope.

[0034] The present invention uses a classified and graded value equivalent assignment system to break down historical heritage, site heritage, intangible heritage and cultural relics archives into multi-dimensional indicators, effectively reducing the subjectivity in the evaluation process and improving the scientific nature and objectivity of the assessment.

[0035] The present invention utilizes the spatial correlation mapping between individual heritage spatial coordinates and value equivalents to realize the visualization of the spatial distribution of urban spatial heritage resource value equivalents, providing an intuitive quantitative basis for urban heritage protection and planning.

[0036] The present invention uses value-equivalent spatial clustering and zoning to accurately identify high-value areas in urban space, clarify protection priorities, and optimize resource allocation.

[0037] The present invention combines heritage value equivalents and heritage spatial relationships, providing a more objective and accurate method for delineating the registered protection scope of historical urban areas from qualitative and quantitative perspectives.

[0038] The present invention has the advantages of low cost and easy operation, is suitable for diverse heritage protection needs, has significant promotion value and practical application prospects, and provides important technical support for scientifically demarcating the scope of registered protection of historical urban areas and formulating hierarchical protection strategies.

[0039] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0041] Figure 1 It is a flow chart of the present invention;

[0042] Figure 2 It is the construction of the basic data set of heritage resources in the central urban area of Chongqing;

[0043] Figure 3 This is a schematic diagram of the equivalent value assignment of individual heritage sites in the central urban area of Chongqing;

[0044] Figure 4a This is a schematic diagram of the spatial coordinate association of individual heritage sites in the central urban area of Chongqing;

[0045] Figure 4bThis is a schematic diagram of the spatial mapping of individual heritage value equivalents in the central urban area of Chongqing;

[0046] Figure 4c This is a schematic diagram of the heritage value equivalent density analysis in the central urban area of Chongqing;

[0047] Figure 5 This is a schematic diagram of identifying areas with high heritage value equivalent in the central urban area of Chongqing;

[0048] Figure 6 This is a schematic diagram of the demarcation of the registered protection area of the historical city where the two rivers meet. DETAILED DESCRIPTION

[0049] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0050] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal communication between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0051] Example 1

[0052] like Figure 1 As shown, the present invention provides an embodiment of a method for delineating the scope of registered protection of a historic urban area based on spatial measurement of heritage value equivalent. This embodiment takes the delineation of the scope of registered protection of a historic urban area in Chongqing as an example, and specifically includes the following steps:

[0053] 1. Constructing a Basic Dataset of Urban Spatial Heritage Resources

[0054] like Figure 2 As shown in the figure, information on 1,124 heritage items in the central urban area of Chongqing was collected, including but not limited to heritage name, heritage type, level, region, coordinate information, and base map of urban roads and terrain information in the central urban area. The city heritage list was compiled and a basic data set of urban spatial heritage resources was constructed in the GIS system.

[0055] 2. Assigning Equivalent Values to Individual Heritage Properties in Urban Spaces

[0056] First, according to the Cultural Relics Protection Law of the People's Republic of China and relevant cultural relics protection laws and regulations, the value equivalent of each type of individual heritage is allocated:

[0057] The individual values of heritage elements are divided into four categories: historical heritage, site heritage, intangible heritage, cultural relics and archives.

[0058] Value Assignment for Historic Heritage: This includes immovable cultural relics and historical buildings. Immovable cultural relics are categorized into four levels: national, provincial, municipal, and county-level cultural relics, and unclassified cultural relics, with values assigned to them of 5 points, 3 points, 2 points, and 1 point, respectively. Historic buildings are categorized into two levels: published and tentative lists, with values assigned to them of 1 point and 0.5 points, respectively.

[0059] Site Heritage Valuation: This includes historical and cultural blocks, traditional style blocks, urban historical parks, historical campuses, and suburban historical villages and towns. Historical and cultural blocks can be divided into two categories based on the time of registration and publication: early-listed and late-listed, with grade equivalents of 60 and 50 points, respectively. Traditional style blocks can be divided into registered and proposed-listed categories, with grade equivalents of 30 and 20 points, respectively. Urban historical parks and historical campuses are assigned a grade equivalent of 20 points. Suburban historical villages and towns are divided into four categories: national and provincial historical and cultural towns, and national and provincial historical and cultural villages, with grade equivalents of 50, 40, and 40 and 30 points, respectively.

[0060] Assignment of intangible heritage value: including heritage types such as oral legends, traditional skills, and folk festivals as carriers, with their grade equivalents set at 4 points, 3 points, 2 points, and 1 point.

[0061] Cultural Relics and Archives: This includes movable cultural relics and historical archives. Movable cultural relics are categorized into first-, second-, third-, and general cultural relics, with grade equivalents set at 25 points, 15 points, 8 points, and 3 points, respectively. Historical archives are categorized into those aged >100 years, 70-100 years, 50-70 years, and 30-50 years, with grade equivalents set at 5 points, 3 points, 1 point, and 0.5 points, respectively.

[0062] The value equivalent of individual heritage in the central urban area of Chongqing is assigned according to the type and level of each individual heritage. Figure 3 As shown, there are 2 individual heritage sites with a total of 60 points (Jin Gangbei Historical and Cultural Block, Huguang Guild Hall and Dongshuimen Historical and Cultural Block), 6 sites with 50 points (including Ciqikou and Zhongshan 4th Road Historical and Cultural Block, etc.), 23 sites with 40 points (including Yudong Traditional Style District and Mudong Historical and Cultural Town, etc.), 19 sites with 20 points (including Chongqing Canned Food Factory and Sichuan Instrument Factory No. 6, etc.), 122 sites with 5 points (including Chongqing People's Grand Hall, etc.), 168 sites with 3 points, 175 sites with 2 points, 376 sites with 1 point, and 96 sites with 0.5 points.

[0063] III. Calculation of the Equivalent Value of Urban Spatial Heritage

[0064] This step mainly involves placing the individual heritage value equivalent on spatial coordinates, and performing spatial mapping and density calculation analysis. It mainly includes the steps of individual heritage spatial coordinate association, individual heritage value equivalent spatial mapping, and urban spatial heritage value equivalent density analysis.

[0065] like Figure 4a and 4b As shown in the figure, firstly, the individual urban heritage and spatial coordinates are associated and located in the GIS system to obtain the individual heritage spatial coordinate dataset, and the individual heritage value equivalent assignment results are spatially mapped to the GIS system to obtain the individual heritage value equivalent dataset. All individual heritage value equivalent datasets constitute the urban spatial heritage value equivalent dataset, and the overall value equivalent dataset of the spatial heritage of the central urban area of Chongqing can be obtained. The overall value equivalent of the spatial heritage of the central urban area of Chongqing is 3871.5, with an average density of 0.71 / km2. 2 Among them, the value of historical sites is 1774.5, accounting for 45.83%; the value of site heritage is 1540, accounting for 39.78%; and the value of intangible heritage is 557, accounting for 14.39%.

[0066] like Figure 4c As shown in FIG, a density analysis of the spatial heritage value equivalent of the central urban area of Chongqing is performed based on the spatial heritage value equivalent dataset of the central urban area of Chongqing. In this embodiment, it is preferred but not limited to use the kernel density analysis method to perform density analysis, such as Figure 4c As shown, high density values are distributed in Yuzhong, Shapingba and Beibei districts, with densities of 50.54 / k㎡, 32.56 / k㎡ and 25.43 / k㎡ respectively.

[0067] 4. Spatial Clustering of Urban Spatial Heritage Value Equivalents and Identification of High-Value Areas

[0068] Specifically, such as Figure 5 As shown, the density analysis results of the overall value equivalent of urban spatial heritage are spatially clustered. The clustering method here is preferably, but not limited to, natural breakpoints and equal intervals. Areas with a density higher than a set value or areas in the top N% of the density ranking are selected as Value I areas, where N is a positive integer. This embodiment selects the latter: the clusters in the top 20% of the density ranking in the results of the density analysis are selected as Value I areas, which can also be called high-value areas.

[0069] If there are clear plots of land within the high-value area, the high-value area is divided into multiple high-value sub-areas based on the different plots. In this embodiment, the high-value area is mainly distributed in Yuzhong, Shapingba, and Beibei districts. Therefore, the high-value area is divided into three high-value sub-areas, namely, high-value sub-area A: the historical area of the intersection of the two rivers, high-value sub-area B: the historical area of Shaci, and high-value sub-area C: the historical area of Beibei.

[0070] V. Delineation of the scope of historical urban area registration and protection

[0071] The registered protection area of Chongqing's historic district is delineated based on the identified high-value areas. In this embodiment, the high-value sub-area A: the historical area where two rivers meet is used as an example to illustrate the delineation of the protection area.

[0072] like Figure 6 As shown, first, the heritage value equivalent of the plots in the high-value sub-area A: the historical area where the two rivers meet was calculated. Specifically, the heritage value equivalent of the plots in the high-value sub-area A: the historical area where the two rivers meet was calculated based on the individual heritage value equivalents combined with the road boundaries of the existing urban land, and combined with the results of the individual heritage spatial coordinate association and the spatial mapping of the individual heritage value equivalents in step 3.

[0073] Then, spatial clustering was performed on the heritage equivalent of the high-value sub-area A: the historical area where the two rivers meet.

[0074] According to the statistical results of the heritage value equivalent of the plots in the high-value sub-area A: the historical area where the two rivers meet, the plots in the high-value sub-area A: the historical area where the two rivers meet are spatially clustered according to their heritage value equivalent, and divided into levels according to the level of the cluster equivalent. In this embodiment, four levels are divided, namely, first-level clustering, second-level clustering, third-level clustering and fourth-level clustering.

[0075] Finally, the high-value sub-area A: the protection scope of the historical area where the two rivers meet

[0076] With the existing road land as the boundary, the high-value sub-area A: the plots with high heritage value equivalent in the historical area of the intersection of the two rivers are delineated as the statutory protection scope of the historical city, while ensuring the continuity of the plots. Here, the specific standard for the plots with high heritage value equivalent is the plots with higher heritage value equivalent levels in the heritage value equivalent spatial clustering results, and the plots with lower levels are removed for delineation. In this embodiment, the first-level cluster, the second-level cluster, and the third-level cluster are selected as the plots with high heritage value equivalent. The plots with high heritage value equivalent in the high-value sub-area A: the historical area of the intersection of the two rivers are the intersection of the Yangtze River and the Jialing River in Chongqing and the Yuzhong Peninsula. The fourth-level cluster is removed, and the continuous boundary line areas with an area of more than 65 hectares in the first-level cluster, the second-level cluster, and the third-level cluster are delineated. According to the results, the plots that meet the delineation standards on the Yuzhong Peninsula and the south bank of the river north of the intersection of the two rivers are finally registered and protected in the Chongqing Two Rivers Intersection Historic City.

[0077] The high-value sub-area B, Shaci Historic Area, and high-value sub-area C, Beibei Historic Area, will be delineated using the same approach as high-value sub-area A, Liangjiang Confluence Historic Area. Once the protection areas of all high-value areas are delineated, the designated protection area for Chongqing's historic urban areas will be complete.

[0078] If the high-value sub-area has not been delineated, the method described in this step can be used to directly delineate the historical city registration protection range for the high-value area.

[0079] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0080] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A method for delineating the scope of registered protection of historic urban areas based on spatial measurement of heritage value equivalents, characterized in that: The following steps are involved: S1, organize the urban heritage list based on urban spatial heritage information and build a basic dataset of urban spatial heritage resources in the GIS system; S2, assigning the value equivalent of individual heritage in urban space; S3, mapping the spatial coordinates of individual urban spatial heritage and their value equivalents into the GIS system to obtain the individual heritage value equivalent dataset. All individual heritage value equivalent datasets constitute the urban spatial heritage value equivalent dataset; performing density analysis on the overall value equivalent of urban spatial heritage based on the urban spatial heritage value equivalent dataset; S4, spatial clustering is performed on the density analysis results to identify high-value areas in the urban space; S5. Combine the individual heritage value equivalents of urban space and the boundaries of existing urban land and roads to divide regional plots, and calculate the heritage value equivalents of plots in high-value areas; use existing road land as the boundary to delineate plots with high heritage value equivalents in high-value areas as the statutory protection area of the historical city, while ensuring the continuity of the plots.

2. The method for delineating the registered protection area of a historic urban area based on spatial measurement of heritage value equivalent according to claim 1 is characterized in that: The urban spatial heritage information in step S1 includes the heritage name, heritage type, level, coordinate information, and a base map of urban roads and terrain information in the central urban area.

3. The method for delineating the registered protection area of a historic urban area based on spatial measurement of heritage value equivalent according to claim 1 is characterized in that: The steps of step S2 are: Categorize individual estate types; assigning value equivalents to each level of each category of individual heritage; Assign value equivalents to all individual heritage sites in the urban space based on their types and levels.

4. The method for delineating the registered protection area of a historic urban area based on spatial measurement of heritage value equivalent according to claim 3 is characterized in that: Individual heritage types include four categories: historical heritage, site heritage, intangible heritage, cultural relics and archives.

5. The method for delineating the registered protection area of a historic urban area based on spatial measurement of heritage value equivalent according to claim 1 is characterized in that: In step S3, the spatial coordinates of individual heritage in the urban space are associated and located in the GIS system to obtain an individual heritage spatial coordinate dataset, and the individual heritage value equivalent space is mapped to the GIS system to obtain an individual heritage value equivalent dataset.

6. The method for delineating the registered protection area of a historic urban area based on spatial measurement of heritage value equivalent according to claim 1 is characterized in that: In step S4, spatial clustering is performed on the density analysis results of the overall value equivalent of urban spatial heritage, and areas with a density higher than a set value or areas in the top N% of the density ranking are selected as high-value areas.

7. The method for delineating the registered protection area of a historic urban area based on spatial measurement of heritage value equivalent according to claim 1 is characterized in that: In step S4, the high-value area is divided into a plurality of high-value sub-areas according to the different plots; In step S5, the regional plots are divided based on the individual heritage value equivalents of the urban space and the boundaries of the existing urban land and roads, and the heritage value equivalents of the plots in each high-value sub-region are counted; the plots with high heritage value equivalents in all high-value sub-regions are delineated with the existing road land as the boundary as the statutory protection area of the historical city, while ensuring the continuity of the plots.

8. The method for delineating the registered protection area of a historic urban area based on spatial measurement of heritage value equivalent according to claim 1 or 7 is characterized in that: In step S5, based on the statistical results of the heritage value equivalents of the plots in the high-value area or the high-value sub-area, the heritage value equivalents of the individual plots in the high-value area or each high-value sub-area are spatially clustered, and the clustered heritage value equivalents are graded according to their levels. The high-value area with existing road land as the boundary or the top M levels of land in the heritage value equivalent spatial cluster corresponding to each high-value sub-area are the statutory protection areas of the historic city, where M is a positive integer.

Images