Method for evaluating land utilization spatial pattern based on clearance degree dimension
A technology of spatial pattern and evaluation method, applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve the problem of inability to accurately express the spatial clustering of land use
Inactive Publication Date: 2012-11-07
WUHAN UNIV OF TECH
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[0006] The technical problem to be solved by the present invention is: In order to make up for the traditional gap index which is affected by the sampling grid size, patch density and object shape, and cannot accurately express the clustering of land use space, a gap-based index is proposed. Construction Method of Dimensional Evaluation of Land Use Spatial Pattern
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[0037] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but is not limited to the content described below.
[0038]In view of the fact that the existing fractal dimension is difficult to express the self-organization and self-adaptive clustering characteristics of multi-center urban land use, the present invention proposes a land use spatial pattern evaluation method based on the gap degree dimension. The method is as follows: firstly use Remote sensing images are used to interpret and extract basic land use data and integrate them, and then calculate the corresponding conventional gap index by changing the scale of the sliding window; Establish a linear mapping relationship in logarithmic form, and then fit it based on least squares linear regression figure 1 The model shown in the figure solves the final interstitial dimension, which is used to quantitatively express the degree of clustering of various types...
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The invention provides a method for evaluating a land utilization spatial pattern based on a clearance degree dimension. The method comprises the following steps of: interpreting and extracting land utilization basic data by using a remotely sensed image and integrating the land utilization basic data; calculating a corresponding conventional clearance degree index by changing the scale size of asliding window; constructing a linear mapping relation in a mode of a natural logarithm between the scale of the sliding window and the conventional clearance degree index; and solving to obtain a final clearance degree dimension for quantitatively expressing the clustering degree of various classes of urban land utilization on the spatial pattern based on a minimum binary multiplication linear regression fitting model. By the method, the modifiable areal unit problem existing in the conventional clearance degree index on different spatial scales can be solved effectively; therefore, the accuracy of expression of the clustering degree of the urban land utilization spatial pattern is improved.
Description
technical field [0001] The invention relates to a land use spatial pattern evaluation method, in particular to a land use spatial pattern evaluation method based on gap degree dimension used in the land use spatial pattern evaluation, belonging to the field of land use. Background technique [0002] Land use change is a comprehensive reflection of regional spatial layout and structural changes, and it is directly or indirectly related to regional population, environment, and social and economic development. By analyzing the regional form and the structural changes of various elements, we can deeply understand the spatial characteristics of regional land use and reveal the law of land use change, which can effectively provide a reference for the rational allocation and utilization of land resources. In the current research, Lacunarity index is widely used to describe the characteristics of landscape structure (hierarchical structure and fractal) and its spatial distribution c...
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IPC IPC(8): G06K9/62
Inventor 吴浩周璐付东杰严冬迟旭
Owner WUHAN UNIV OF TECH