@data{10.12072/ncdc.NIEER.db0075.2020,
title = {1:700000 land cover data set of Gansu Province in 1990},
author = {YanChangzhen and XieJiali},
url = {http://www.ncdc.ac.cn/portal/metadata/e0048812-1fc4-4ce6-8500-240be4770a3e},
cstr = {11738.11.ncdc.nieer.2020.1478},
doi = {10.12072/ncdc.NIEER.db0075.2020},
journal = {National Cryosphere Desert Data Center},
publisher = {National Cryosphere Desert Data Center(www.ncdc.ac.cn)}
}