The cropland ETn and ETh data in China's Drylands form 2003 to 2019

This dataset provides annual natural evapotranspiration (ETn) and human-induced evapotranspiration (ETh) data for croplands across seven regions in China’s drylands from 2003 to 2019. The data are stored in GeoTIFF format with the WGS84 geographic coordinate system (EPSG:4326) and a spatial resolution of approximately 1 km. Each single-band Float32 file contains annual ETn or ETh values and is named according to the variable type and year (e.g., Cropland_ETn_2003.tif for natural evapotranspiration in 2003, Cropland_ETh_2003.tif for human-induced evapotranspiration in 2003). These data are generated using a data-driven ET decoupling model, which has been validated with an R² exceeding 0.8 across 35 basins in China’s drylands. This dataset is well-suited for regional-scale agro-hydrological analyses and agricultural water resource management.本数据集涵盖2003年至2019年中国干旱区7个区域农田的年度自然蒸散发（natural evapotranspiration, ETn）与人为诱导蒸散发（human-induced evapotranspiration, ETh）数据。数据以GeoTIFF格式存储，采用WGS84地理坐标系（EPSG:4326），空间分辨率约为1 km。每个单波段Float32文件均包含对应年度的自然蒸散发或人为诱导蒸散发数值，文件名按照变量类型与年份组合命名（例如，代表2003年自然蒸散发的文件名为Cropland_ETn_2003.tif，代表2003年人为诱导蒸散发的文件名为Cropland_ETh_2003.tif）。本数据集基于数据驱动的蒸散发解耦模型生成，并在中国干旱区35个流域开展了验证，验证得到的决定系数（R²）均超过0.8。该数据集适用于区域尺度农业水文分析与农业水资源管理相关研究与实践。