2026-10-14T11:45:49Z https://www.scidb.cn/oai

10.57760/sciencedb.08490 2023-06-25T13:43:56Z

2023-06-25 CCD-Maize: A twenty-year dataset of maize distribution with high spatial resolution in China doi:10.57760/sciencedb.08490 en The dataset is a long-term, high-resolution maize distribution map for China (China Crop Dataset–Maize, CCD-Maize), which contains the distribution maps of maize in 22 provinces and municipalities of China from 2001 to 2020. The file format is GeoTIFF and the spatial reference is WGS84 (EPSG:4326). The resolution of the distribution maps is 30-m. The distribution maps are produced using the time-weighted dynamic time warping (TWDTW) method based on a high spatiotemporal resolution fused dataset. The overall accuracy over 22 provincial administrative regions was 79.38 % on average based on 18,557 samples, and at the county level, the correlation coefficient (R2) between the identified area and the statistical area from 2001 to 2020 ranged from 0.657 to 0.903.classification system:0: non-maize1: maize Maize; Fused dataset; High spatial resolution; Time-weighted dynamic time warping; China Qiongyan Peng Ruoque Shen Xiangqian Li Tao Ye Jie Dong Yangyang Fu Wenping Yuan PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset http://www.doi.org/https://doi.org/10.1038/s41597-023-02573-6 Science Data Bank