Spatially explicit information on crop distribution is essential for market information, food
security, and agricultural sustainability. However, high-resolution crop maps are unavailable
for most countries of the world. In this study, we developed an operational workflow and
produced the first openly-available 10-m resolution maize and soybean map over China. We
also derived area estimates for maize and soybean extent for 2019 using a stratified, two-
stage, cluster sampling design and ground data collected for the entire country. We …

Spatially explicit crop information is essential for food security and agricultural sustainability.
However, high-resolution crop type maps are unavailable in most countries. In this study, we
developed an experimental workflow and produced the first 10 m resolution maize and
soybean map over China. To support crop mapping, we implemented a stratified, two-stage,
cluster sampling design and collected ground data over the entire country in 2019. We
developed a multi-scale, multi-temporal procedure for mapping, in which field data were …