Space function unit-based land area province city and county space planning three-region identification method

Abstract

The invention discloses a space function unit-based land area province city and county space planning three-region identification method. The method comprises the steps of performing classification and grading on landforms by adopting refined DEM data; identifying a primary space function unit; extracting the space function unit; and determining a three-region classification rule and automaticallyclassifying and identifying three regions. By integrating element characteristics in the unified space function unit, the accuracy of three-region classification is ensured; and the three-region classification rule is modeled through a decision tree algorithm, and the automation of three-region classification definition is realized, so that the purposes of effectively and finely integrating and representing space and attribute characteristics of geographic elements on space units, accurately classifying the three regions, enabling the minimal space units to be independent mutually, homogeneous internally and stable structurally and improving working efficiency of space planning are achieved.

Description

technical field [0001] The invention relates to the technical field of spatial planning compilation, in particular to a three-region identification method for spatial planning of land provinces, cities and counties based on spatial functional units. Background technique [0002] The "Overall Plan for the Reform of the Ecological Civilization System" proposes that "integrate the various spatial plans currently compiled by various departments, compile a unified spatial plan, and achieve full coverage of the plan." The basic concept of functional areas and the three strategic patterns of city, agriculture, and ecology, that is, the "three areas" of urban space, agricultural space, and ecological space. Relying on this large spatial pattern, the management and control measures designed by each department are systematically integrated. Coordinate all kinds of spatial planning, form the basic framework and control constraints, and promote the "integration of multiple plans". 51),...

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Problems solved by technology

[0003] The "Provincial Spatial Planning Pilot Program" lacks technical details. In terms of multi-information fusion, the existing methods or technical solutions are still based on statistical synthesis, lacking the application of spatial technology, and facing heterogeneous vector and raster of different spatial scales. In the synthesis of multi-source data, in the face of the integration of natural resource elements and socio-economic elements with different spatial distribution characteristics, there are problems such as excessive spatial differences within a unit and consistent geographical characteristics of adjacent spatial units but cannot be considered uniformly, which can easily lead to the loss of effective information. Lost, leading to defects in the effective comprehensive induction of space and attribute characteristics of various influencing factors, which affects the scientific nature of the partition results

[0004] In terms of classification and delineation of the three regions, due to the complex and diverse actual situation, various factors are considered. Although there are a few GIS software that assist the division of the three regions, their auxiliary functions are mainly realized in data preprocessing, data management, and data initialization. Part of the automation function, in the process of classifying and demarcating the three districts, there are often tens of millions of map spots in a city and county area, and technical personnel are still required to distinguish and process different situations, with heavy workload and subjective influence factors Many, it is very easy to cause disputes and misjudgments in the delineation results

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