Water index in the Qilian Mountain Area (2019)

Water index in the Qilian Mountain Area (2019)


This dataset contains the ground surface water (including liquid water, glacier and perennial snow) distribution in Qilian Mountain Area in 2019. The dataset was produced based on classical Normalized Difference Water Index (NDWI) extraction criterion and manual editing. Landsat images collected in 2019 were used as basic data for water index extraction. Sentinel-2 images and Google images were employed as reference data for adjusting the extraction threshold. The dataset was stored in SHP format and attached with the attributions of coordinates and water area. Consisting of 1 season, the dataset has a temporal resolution of 1 year and a spatial resolution of 30 meters. The accuracy is about 1 pixel (±30 meter). The dataset directly reflects the distribution of water bodies within the Qilian Mountain in 2018, and can be used for quantitative estimation of water resource.


File naming and required software

 File Naming Convention and data description:
File Naming Convention: Class_coordinate_YYYY.shp (YYYY: year)
Data Version:V1.0
Projection:+proj=longlat +datum=WGS84 +no_defs
Data Format: shp
Water body:Polygon vector


Data Citations Data citation guideline What's data citation?
Cite as:

Li, J., Li, J., Li, X., Liu, S. (2020). Water index in the Qilian Mountain Area (2019). National Tibetan Plateau Data Center, DOI: 10.11888/Hydro.tpdc.270723. CSTR: 18406.11.Hydro.tpdc.270723. (Download the reference: RIS | Bibtex )

Using this data, the data citation is required to be referenced and the related literatures are suggested to be cited.


References literature

1.Du, Z.Q., Li, W.B., Zhou, D.B., Tian, L.Q., Ling, F., Wang, H.L., Gui, Y.M., Sun, B.Y. (2014). Analysis of Landsat-8 OLI imagery for land surface water mapping. Remote Sensing Letters, 5(7-9), 672-681. DOI: 10.1080/2 150704X.2014.960606 (View Details )


Support Program

Pan-Third Pole Environment Study for a Green Silk Road-A CAS Strategic Priority A Program (No:XDA20000000)

the Strategic Priority Research Program of the Chinese Academy of Sciences (No:XDA20100101) [XDA20100101]

Copyright & License

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Example of acknowledgement statement is included below: The data set is provided by National Tibetan Plateau Data Center (http://data.tpdc.ac.cn).


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


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Keywords
Geographic coverage
East: 107.00 West: 89.00
South: 34.00 North: 45.00
Details
  • Temporal resolution: Yearly
  • Spatial resolution: 10m - 100m
  • File size: 66 MB
  • Views: 1,632
  • Downloads: 1
  • Access: Protection period
  • Updated time: 2021-04-19

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Contacts
: LI Jia   LI Jianjiang   LI Xin   LIU Shaomin  

Distributor: National Tibetan Plateau Data Center

Email: data@itpcas.ac.cn

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