Automatic sliding-window-based ecological crisscross belt identification method

A sliding window, automatic recognition technology, applied in character and pattern recognition, special data processing applications, instruments, etc., can solve problems such as difficulty in automatically extracting the spatial range of ecological interlaced zones, large amount of calculation, and sensitivity to noise.

Inactive Publication Date: 2015-06-10
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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Problems solved by technology

However, Laplacian filtering is very sensitive to noise and the amount of calculation is very large, so it is very difficult to automatically extract the spatial range of the ecological ecotone

Method used

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  • Automatic sliding-window-based ecological crisscross belt identification method
  • Automatic sliding-window-based ecological crisscross belt identification method
  • Automatic sliding-window-based ecological crisscross belt identification method

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Embodiment Construction

[0027] The specific implementation manner of the present invention will be described in further detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] Example Take Northeast China and North China as the research test area, based on the spatial distribution data of land cover types in 2005, and based on the sliding window method proposed by the present invention, the automatic identification of different ecological ecotone types in the research area is carried out.

[0029] Such as figure 1 Shown, example comprises following flow process according to the steps of the present invention:

[0030] First, using the spatial distribution data of land cover types in the study area in 2005, the raster data of the area percentage of different land cover types in the 1km*1km cell grid was produced ( figure 2 ); and then deter...

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Abstract

The invention discloses an automatic sliding-window-based ecological crisscross belt identification method, which comprises the following steps: 1, making grid data about the area percentages of different land cover types under a unit grid in a certain scale by virtue of land cover type space distribution data; 2, recalculating the grid data of each type of land cover by virtue of a sliding window, assigning a new attribute value of each unit grid in the grid data as an average value of attribute values of all the unit grids in a certain range around the unit grid, and assigning an average value of attribute values of effective unit grids to a boundary region; 3, setting an area proportion threshold value of related land cover types in different types of ecological crisscross belts; 4, performing calculation and judgment on the area proportion data of each type of land cover according to the set area proportion threshold value, and generating an ecological crisscross belt type and a spatial range. According to the method, the type and spatial distribution range of the ecological crisscross belt can be effectively obtained, so that reference is provided for the deep development of ecological crisscross belt researches and ecological environment protection.

Description

technical field [0001] The invention relates to the technical fields of land cover, ecological environment research, remote sensing, and geographic information system spatialization. In particular, it relates to a technical method for automatically identifying the spatial range of ecological ecotones by calculating the area ratio of different land cover types within a sliding window based on the spatial distribution data of land cover types, and then combining effective threshold parameters. Background technique [0002] The ecological ecotone refers to the transition zone between adjacent ecosystems. It is an area where the structure and function of the ecosystem change rapidly on the temporal and spatial scales. The area, also known as the ecological transition zone, the ecological fragile zone, and the landscape transition zone, has the functions of "indicating" and "preventing" global climate change compared with other areas, and is also a key area for global change and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G06K9/00
Inventor 徐新良
Owner INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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