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Spatial configuration method for land evaluation sampling points

A configuration method and sampling point technology, applied in data processing applications, instruments, calculations, etc., can solve the problems of uneven spatial distribution of samples, anisotropy of evaluation unit influence, etc.

Inactive Publication Date: 2010-01-13
WUHAN UNIV
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Problems solved by technology

[0004] The present invention studies the spatial configuration of land evaluation samples by introducing a geostatistical analysis method to solve the problem of spatial correlation between samples, unevenness of spatial distribution and anisotropy of samples' influence on evaluation units

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  • Spatial configuration method for land evaluation sampling points
  • Spatial configuration method for land evaluation sampling points
  • Spatial configuration method for land evaluation sampling points

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Embodiment Construction

[0060] The method of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0061] The method of the invention includes the identification of the outlier value of the land evaluation sample, the variation function simulation of the sample space interpolation and unbiased estimation, and the division of the Kriging estimation neighborhood based on the Delaunay triangulation.

[0062] Among them, the outlier value of the land evaluation sample is identified as figure 1 shown, including the following steps:

[0063] 1) The difference between spatial data is used as the basic criterion to identify the outliers in the sample set, and the corresponding adaptive function is constructed as

[0064] F ( z ) = Σ i = 1 M z ...

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Abstract

The invention discloses a spatial configuration method for land evaluation sampling points, comprising the following steps: (1) identifying outliers of the land evaluation sampling points; (2) interpolating unbiased-estimated variable function fitting in the sampling points; (3) estimating neighborhood division on the basis of Kriging of Delaunay trigonometry network. The invention provides an automatic configuration method for the land evaluation sampling points based on a land statistical analysis model, which solves the problem of autocorrelation among the land evaluation sampling points and the problem of anisotropism influenced by the sampling points, in order to improve the quality of acquiring sampling point data and provide a technical base for quantified and automated land evaluation.

Description

technical field [0001] The invention belongs to the field of land investigation and evaluation, in particular to a sample point space configuration method applied to land quality evaluation. technical background [0002] Land evaluation is to evaluate land quality by acquiring and comprehensively analyzing and processing the natural, economic and social attributes that affect land quality. It is an important technical means to find out the quality, quantity and spatial distribution of land resources, and is an important basis for land resource management, land use planning, regional planning, and urban planning. Among them, the spatial configuration and sampling of evaluation sample points are the key links of land evaluation, which directly affect the rationality and accuracy of land evaluation results. There are two main types of traditional spatial sampling methods: uniform sampling and non-uniform sampling. The commonly used method for uniform sampling is standard grid ...

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Application Information

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IPC IPC(8): G06Q10/00G06Q50/00G06N3/12
Inventor 刘耀林刘艳芳刘殿锋
Owner WUHAN UNIV
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