A 28 time-points cropland area change dataset in Northeast China from 1000 to 2020

One of the major manifestations of global change is the alteration of natural vegetation landscapes by human reclamation. The dataset contains cropland fraction information at 28 time points from 1000 to 2020 in Northeast China. Before the year 1700, the update cycle was every 100 years; from 1700 to 1900, the update cycle was every 50 years; from 1910 to 1980, the update cycle was every 10 years; while after 1980, the update cycle was every 5 years. 1000 to 1600 corresponds to historical provincial-level administrative districts, while 1700 to 2020 corresponds to modern county-level administrative districts.