An Automatic Identification Method of Ecotone Based on Sliding Window

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

Inactive Publication Date: 2018-06-05
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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  • An Automatic Identification Method of Ecotone Based on Sliding Window
  • An Automatic Identification Method of Ecotone Based on Sliding Window
  • An Automatic Identification Method of Ecotone Based on Sliding Window

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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 a sliding window-based automatic identification method for ecological staggered zones, comprising the following steps: S1. Using the spatial distribution data of land cover types, making grids of the area percentages of different land cover types under a certain scale cell grid grid data; S2. Use the sliding window to recalculate various types of land cover raster data, assign the new attribute value of each cell in the raster data to the average value of all cell attribute values ​​within a certain range around it, The boundary area is the average value of valid cell attribute values; S3. Set the area ratio thresholds of relevant land cover types in different types of ecological ecotones; S4. According to the set area ratio thresholds, the area of ​​each type of land cover Calculate and judge the proportion data to generate the ecological ecotone type and spatial range. The invention can effectively obtain the type and spatial distribution range of the ecological ecotone, thereby providing a reference basis for in-depth research on the ecological ecotone and protection of the ecological environment.

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