@data{10.5281/zenodo.5644386,
title = { A cloud-free MODIS NDSI dataset  for China(2001–2020) },
author = {lxh and shf},
url = {http://www.ncdc.ac.cn/portal/metadata/9b551c50-7501-47b4-b73c-0ce1b62cf37c},
cstr = {11738.11.NCDC.ZENODO.DB4016.2023},
doi = {10.5281/zenodo.5644386},
journal = {National Cryosphere Desert Data Center},
publisher = {National Cryosphere Desert Data Center(www.ncdc.ac.cn)}
}