摘要
Big Earth observation(EO)data have played an important role in fields such as quantifying global forest changes(Hansen et al.,2014),tracking global urban expansion(Liu et al.,2019),and mapping land use and land cover(Felipe-Lucia et al.,2020).It is becoming more and more obvious that big EO data is an important asset,which means that there is an urgent need to develop effective data-stewardship tools and advanced analytical techniques to make the best use of big EO data.
