Multi-scale spatial analysis and evaluation method and system based on geographical national conditions

A technology of spatial analysis and evaluation methods, applied in geographic information databases, data processing applications, special data processing applications, etc., can solve the problems of single evaluation scale, integrity, poor semantic consistency and timing, and different data sources. The effect of reducing the loss of evaluation accuracy, fine-grained content division, and rapid warehousing and updating

Inactive Publication Date: 2020-02-11
江苏省基础地理信息中心
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Problems solved by technology

[0002] The existing spatial analysis and evaluation, based on spatial overlay analysis, deduces different specific evaluation methods through the development of different index fitting algorithms, which have some shortcomings: spatial evaluation involves many elements, and data collection is difficult. In practice, due to the limitations of data availability and comprehensive coverage, some indicators have to be passively discarded or replaced by suboptimal indicators; the existing spatial analysis and evaluation rely on mostly temporary collection of data from different sources
Therefore, the integrity, semantic consistency, and timing of the evaluation are poor, and

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  • Multi-scale spatial analysis and evaluation method and system based on geographical national conditions
  • Multi-scale spatial analysis and evaluation method and system based on geographical national conditions
  • Multi-scale spatial analysis and evaluation method and system based on geographical national conditions

Examples

Experimental program
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Example Embodiment

[0041] Example 1

[0042] The following describes the evaluation methods of ecological environment indicators:

[0043] This dimensional evaluation uses the data of the geographical national conditions and surface coverage. The sub-indices and weights of the ecological environment index are shown in the following table:

[0044]

[0045] Ecological Environment Index = Habitat Quality Index × 0.25 + Ecological Protection Index × 0.20 + Ecological Structure Index × 0.30 + (100-Land Stress Index) × 0.25. The ecological environment index ranges from 0-100.

[0046] The regional habitat quality index is used to describe the suitability of regional habitat quality. Regional Habitat Quality Index=100×(0.35×forest land+0.21×grassland+0.28×water area wetland+0.11×cultivated land+0.04×construction land+0.01×unused land) / regional area. The weight of each ecological land type in the Habitat Quality Index is shown in the following table:

[0047]

[0048] The index and weight setting of ecologic...

Example Embodiment

[0055] Example 2

[0056] The following describes the evaluation method of urban construction indicators:

[0057] (1) The formula for calculating traffic network density is as follows:

[0058]

[0059] ρ i =L i / S

[0060] T represents the density of the traffic network, M represents the technical level of the highway (divided into: high-speed, first-class, second-class, third-class, fourth-class, etc.), δ i Indicates the weight of each grade of road in the area, as shown in the following table, ρ i Indicates the density of a certain level of road in the area, L i Represents the length of a certain level of road in the area, S represents the area of ​​the area.

[0061] Highway technical grade Weights high speed 0.125*Number of lanes First level 0.092*Number of lanes Level 20.15 Level 30.06 Level 40.01 substandard0.01

[0062] After obtaining the density of the traffic network, normalization is performed and the geometric interval is graded to obtain the final evaluation res...

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Abstract

The invention relates to the technical field of territorial space evaluation, and discloses a multi-scale space analysis and evaluation method and system based on geographic national conditions, and the method comprises the following steps: S1, carrying out the data collection according to a geographic national condition data collection standard; S2, selecting the size of a price evaluation network unit according to different evaluation requirements; S3, determining an evaluation scale according to evaluation requirements, constructing an evaluation index system, and performing data preprocessing; and S4, obtaining a single-index evaluation result through model calculation, and then obtaining a final evaluation result. According to the multi-scale spatial analysis and evaluation method andsystem based on the geographical national conditions adopt a spatial analysis and evaluation technology driven by geographic national condition data, the geographic national condition data is introduced into the field of spatial analysis and evaluation, and a long-time-sequence evaluation database is constructed by combining other basic geographic data, humanistic data and planning data, so thata comprehensive and long-time-sequence evaluation result is formed, the content division is fine, and the accuracy of the evaluation result is ensured.

Description

technical field [0001] The invention relates to the technical field of national land space evaluation, in particular to a method and system for multi-scale spatial analysis and evaluation based on geographical conditions. Background technique [0002] The existing spatial analysis and evaluation, based on spatial overlay analysis, deduces different specific evaluation methods through the development of different index fitting algorithms, which have some shortcomings: spatial evaluation involves many elements, and data collection is difficult. In practice, due to the limitations of data availability and comprehensive coverage, some indicators have to be passively discarded or replaced by suboptimal indicators; the existing spatial analysis and evaluation rely on mostly temporary collection of data from different sources. Therefore, the integrity, semantic consistency and timing of the evaluation are poor, and the refinement of the evaluation granularity is insufficient. [0...

Claims

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Application Information

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IPC IPC(8): G06F16/29G06F16/23G06Q10/06G06Q50/26
CPCG06F16/29G06F16/23G06Q10/0639G06Q50/26
Inventor 石善球张浩朱明非赵萍张璐周宇晨
Owner 江苏省基础地理信息中心
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