Digital Heihe

Qilian Mountains integrated observatory network: Dataset of Heihe integrated observatory network (phenology camera observation dataset of Sidaoqiao superstation, 2018)

The dataset contains phenological camera observation data collected at the Arou Superstation in the midstream of the Heihe integrated observatory network from June 13 to November 16, 2018. The instrument was developed with data processed by Beijing Normal University. The phenomenon camera integrates data acquisition and data transmission functions. The camera captures high-quality data with a resolution of 1280×720 by looking-downward. The calculation of the greenness index and phenology are following 3 steps: (1) calculate the relative greenness index (GCC, Green Chromatic Coordinate, calculated by GCC=G/(R+G+B)) according to the region of interest, (2) perform gap-filling for the invalid values, filtering and smoothing, and (3) determine the key phenological parameters according to the growth curve fitting (such as the growth season start date, Peak, growth season end, etc.) There are also 3 steps for coverage data processing: (1) select images with less intense illumination, (2) divide the image into vegetation and soil, and (3) calculate the proportion of vegetation pixels in each image in the calculation area. After the time series data is extracted, the original coverage data is smoothed and filtered according to the time window specified by the user, and the filtered result is the final time series coverage. This data set includes relative greenness index (Gcc).

Please refer to Liu et al. (2018) for sites information in the Citation section.

Copyright & License

Picture from phenology camera: Station+yyyy+mm+dd+hhmm, for example, Sidaoqiao201806230800.jpg</p><p>Post processing data: Year+** observatory network+ site no + Phenology camera.

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Related Literatures:

1. Liu, S.M., Li, X., Xu, Z.W., Che, T., Xiao, Q., Ma, M.G., Liu, Q.H., Jin, R., Guo, J.W., Wang, L.X., Wang, W.Z., Qi, Y., Li, H.Y., Xu, T.R., Ran, Y.H., Hu, X.L., Shi, S.J., Zhu, Z.L., Tan, J.L., Zhang, Y., & Ren, Z.G. (2018). The Heihe Integrated Observatory Network: A Basin-Scale Land Surface Processes Observatory in China. Vadose Zone Journal, 17(1), 180072. doi:10.2136/vzj2018.04.0072.(View Details |Download )

Cite as:

Qu, Y., Xu, Z., Li, X. (2019). < b>Qilian Mountains integrated observatory network: Dataset of Heihe integrated observatory network (phenology camera observation dataset of Sidaoqiao superstation, 2018)</b>2019. doi: 10.11888/Meteoro.tpdc.270761. (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.Liu, J.G., & Pattey, E. (2010). Retrieval of leaf area index from top-of-canopy digital photography over agricultural crops. Agricultural and Forest Meteorology, 150(11), 1485-1490. (View Details )

2.Liu, Y. K., Mu, X. H., Wang, H. X., & Yan, G. J. (2012). A novel method for extracting green fractional vegetation cover from digital images. Journal of Vegetation Science, 23, 406–418. (View Details |Download)

3.Song, W. J., Mu, X. H., Yan, G. J., & Huang, S. (2015). Extracting the Green Fractional Vegetation Cover from Digital Images Using a Shadow-Resistant Algorithm (SHAR-LABFVC). Remote Sensing, 7, 10425-10443. (View Details )

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