Land evaluation index classification quantitative method based on spatial data field

Abstract

The invention discloses a land evaluation index classification quantitative method based on spatial data field, the method comprises the following steps: (1) constructing a land evaluation spatial data field; (2) classifying land evaluation spatial data field source; (3) classifying and quantizing the land evaluation index based on the land evaluation spatial data field source. The method leads factors affecting land price and the distribution of the land price to be viewed as a special geographic space data field, different types of the evaluation index are different field sources of land price data field, and according to the radiation characteristics of the data field source, the invention provides a set of land evaluation index classification quantitative method based on spatial data field, so as to provide technical support for quantitative and automatic land evaluation.

Description

technical field [0001] The invention relates to a land evaluation index automatic quantification method, in particular to a land evaluation index classification and quantification method based on a spatial data field, which belongs to the field of land investigation and evaluation. Background technique [0002] The quantification of land evaluation indicators is the key to realize the transformation of land evaluation from qualitative to quantitative, and it is necessary to comprehensively consider the characteristics of the evaluation index itself and its impact on the geographical space of the evaluation. Analyzing and clarifying the spatial mechanism of land evaluation influencing factors is the basis for choosing a reasonable land evaluation index quantification method. The research on the quantification of land evaluation indicators and the division of evaluation units in foreign countries has gone through three stages of development. From the 1950s to the 1970s, the qu...

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Problems solved by technology

In general, the traditional methods of quantifying the role of land evaluation factors lack the analysis of the mechanism of action between land use demand and land characteristic attributes, as follows: ① there is a lack of unified measurement space for the quantification of evaluation indicators of different types and scales; ② Existing quantification methods mostly use hypothetical, ideal and uniform geographic space to determine the area of ​​action and the maximum radius of influence, ignoring the non-uniform influence of natural and socioeconomic factors such as roads, rivers, mountains, and population density on location. (Anisotropy) ③The linear distance between the influencing factor and the evaluation unit is mostly used to measure the radiation and attenuation of the factor, without considering the actual distribution of the media such as roads in the geographical space where the influence of the factor occurs, and the Euclidean geometric space distance cannot Reflecting the actual path of factors affecting radiation transfer; ④The size of the factor’s effect is unified and dimensionless into a value without any physical meaning, which makes it difficult to reveal the essence of the factor’s influence; ⑤Using a unified weighting method to measure the importance of factors, ignoring the spatial distribution of factors regional differences

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