Surface information of Qinghai-Tibet engineering corridor (2014-2020)

Surface information of Qinghai-Tibet engineering corridor (2014-2020)

The dataset is the remote sensing image data ofGF-1 satellite in the Qinghai-Tibet engineering corridor obtained by China High Resolution Earth Observation Center. After the fusion processing of multispectral and panchromatic bands, the image data with a spatial resolution of 2 m is obtained. In the process of obtaining ground vegetation information, the classification technology of combining object-oriented computer automatic interpretation and manual interpretation is adopted, The object-oriented classification technology is to collect adjacent pixels as objects to identify the spectral elements of interest, make full use of high-resolution panchromatic and multispectral data space, texture and spectral information to segment and classify, and output high-precision classification results or vectors. In actual operation, the image is automatically extracted by eCognition software. The main processes are image segmentation, information extraction and accuracy evaluation. After verification with the field survey, the overall extraction accuracy is more than 90%.

File naming and required software

The file format is SHP format, where 01x represents grassland, 02x represents water area, 03x represents construction land and 04x represents unused land. Data can be opened with ArcGIS.

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Cite as:

Niu, F. (2022). Surface information of Qinghai-Tibet engineering corridor (2014-2020). A Big Earth Data Platform for Three Poles, DOI: 10.11888/Terre.tpdc.272796. CSTR: 18406.11.Terre.tpdc.272796. (Download the reference: RIS | Bibtex )

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Support Program

CASEarth:Big Earth Data for Three Poles(grant No. XDA19070000) (No:XDA19000000)

Copyright & License

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License: This work is licensed under an Attribution 4.0 International (CC BY 4.0)

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Geographic coverage
East: 95.00 West: 90.00
South: 31.00 North: 37.00
  • Temporal resolution: 1 year < x < 10 year
  • Spatial resolution: 1m - 10m
  • File size: 2,024 MB
  • Views: 1246
  • Downloads: 6
  • Access: Requestable
  • Temporal coverage: 2014-01-01 To 2020-12-31
  • Updated time: 2022-08-29
: NIU Fujun  

Distributor: A Big Earth Data Platform for Three Poles


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