Cold and Arid Research Network of Lanzhou university (Phenology camera observation data set of Suganhu Station, 2020)

Cold and Arid Research Network of Lanzhou university (Phenology camera observation data set of Suganhu Station, 2020)


The data set includes the phenological camera observation data of suganhu station of Lanzhou University cold and dry area scientific observation network in haertang River Basin of Qaidam Basin from January 1, 2020 to December 31, 2020. The longitude and latitude of the observation points are 94.125 ° e, 38.992n, and the altitude is 2798m. The data is processed by the software package independently developed by Beijing Normal University. The phenological camera collects data in a downward way with a resolution of 2592 * 1944, and the shooting time and frequency can be specified. For the calculation of greenness index phenology, we need to calculate the relative greenness index (GCC, green chromic coordinate formula is GCC = g / (R + G + b), R, G and B are the pixel values of red, green and blue channels of the image) according to the region of interest, and then fill in the invalid values and filter smoothing, finally determine the key phenology parameters according to the growth curve fitting, such as the start date of the growth season, the peak value of the growth season, the peak value of the growth season End date of growing season, etc; For the coverage, firstly, the data is preprocessed, and the image with low illumination is selected. Then, the image is divided into vegetation and soil, and the proportion of vegetation pixels in the calculation area of each image is calculated as the corresponding coverage of the image. After the extraction of time series data, the original coverage data is smoothed and filtered according to the time window specified by the user, The filtered result is the final time series coverage. This data set includes the relative greenness index (GCC).


File naming and required software

Year+** observatory network+ site+ Phenomenon


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Cite as:

Zhao, C., Zhang, R. (2021). Cold and Arid Research Network of Lanzhou university (Phenology camera observation data set of Suganhu Station, 2020). National Tibetan Plateau Data Center, DOI: 10.11888/Ecolo.tpdc.271590. CSTR: 18406.11.Ecolo.tpdc.271590. (Download the reference: RIS | Bibtex )

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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]

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


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Keywords
Geographic coverage
East: 94.12 West: 94.12
South: 38.99 North: 38.99
Details
  • Temporal resolution: Daily
  • Spatial resolution: -
  • File size: 0.01 MB
  • Views: 556
  • Downloads: 76
  • Access: Open Access
  • Temporal coverage: 2020-01-01 To 2020-12-31
  • Updated time: 2021-07-16
Contacts
: ZHAO Changming   ZHANG Renyi  

Distributor: National Tibetan Plateau Data Center

Email: data@itpcas.ac.cn

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