Ready-To-Use (RTU) Remote Sensing Products Zone II Versions ZH3 Vol 5 (4) 2020
A time series orthophoto dataset of Wuqi County: a typical returning farmland to forest area on the Loess Plateau
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Abstract & Keywords
Abstract: This dataset of a time series orthophoto products is based on the data from the 130-scene GF-1 WFV satellite of the Returning Farmland to Forest Area on Loess Plateau (Wuqi County and its surrounding areas, Yan’an City, Shaanxi Province) from 2013 to 2018. Firstly, we used landsat-8 full-color orthophotos as reference images, and obtained image control points through automatic image matching. Secondly, we used the L1 norm-constrained least square method to modify the RPC model with the image. Finally, we orthorectified the original image based on the modified RPC model and DEM data and obtained the time series orthophoto dataset of Wuqi County and its surrounding areas. The image data (spatial resolution 16 m) include visible light and near-infrared bands and the plane geometric accuracy is higher than 2 pixels. This dataset will be kept updated, and can provide data support for in-depth research on the effects of returning farmland to forest and grassland on the Loess Plateau and its ecological and economic effects.
Keywords: Loess Plateau; returning farmland to forest; Wuqi County; orthophoto; time series
Dataset Profile
TitleA time series orthophoto dataset of Wuqi County: a typical returning farmland to forest area on the Loess Plateau
Data corresponding authorHe Guojin (
Data authorsLong Tengfei, He Guojin, Jiao Weili
Time range2013–2018
Geographical scopeIn and around Wuqi County, Yan’an, Shaanxi Province of China (34°56′26″N–38°45′5″N, 105°31′54″E–110°24′19″E).
Spatial resolution16 m
Data volume258 GB
Data format*.tif, *.jpg, *.xml, *.txt
Data service system<>
Sources of fundingNational Natural Science Foundation of China (61731022, 61701495); Strategic Priority Research Program of the Chinese Academy of Sciences (XDA19090300).
Dataset compositionThis dataset includes 130-scene images. Each scene image is stored in a separate folder named after the corresponding sensor name, scene center latitude and longitude, and imaging date. Each folder contains 4 files: the orthoimage file of “tif” format, the metadata file of “xml” format, the thumbnail file of “jpg” format, and the accuracy evaluation file of “txt”.
Article and author information
Long Tengfei
He Guojin
Jiao Weili
Publication records
Released: April 8, 2020 ( VersionsZH2
Published: Dec. 30, 2020 ( VersionsZH3