Annual time-series 1-km maps of crop area and types in the conterminous US (CropAT-US) during 1850-2021

By integrating multi-source cross-scale inventories and satellite-based datasets, we reconstructed the annual crop density and crop type map (excluding summer idle/fallow, cropland pasture) in the contiguous US at 1km×1km resolution from 1850 to 2021. The annual crop density map depicts the distribution and fraction of cultivated land, while the crop type map displays the corresponding crop type. The developed datasets fill the data gap in lacking of crop type extent and type maps, which can support the environmental assessment and socioeconomic analysis related to agricultural activities. (Supplement to: Shuchao, Ye et al. (2023): Annual time-series 1-km maps of crop area and types in the conterminous US (CropAT-US): cropping diversity changes during 1850-2021.)

本研究通过整合多源跨尺度清查数据与卫星遥感数据集，重建了1850年至2021年美国本土地区1km×1km分辨率的年度作物密度与作物类型分布图（排除夏季休耕/撂荒地、农田牧草地）。其中，年度作物密度图刻画了耕地的分布与占比情况，作物类型图则展示了对应地块的作物类别。本数据集填补了当前作物种植范围与类型分布图缺失的数据空白，可为农业活动相关的环境评估与社会经济分析提供数据支撑。（补充资料：叶树超等（2023）：《1850-2021年美国本土1km分辨率作物面积与类型年度时序数据集（CropAT-US）：1850-2021年种植多样性变化》）