Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China.
International Food Policy Research Institute (IFPRI), Washington, DC20005, USA.
Sci Data. 2023 Sep 11;10(1):617. doi: 10.1038/s41597-023-02526-z.
Nitrogen (N) is an important nutrient for crop growth. However, the overuse of N fertilizers has led to a series of devastating global environmental issues. Recent studies show that multiple datasets have been created for agricultural N fertilizer application with varied temporal or spatial resolutions, nevertheless, how to synchronize and use these datasets becomes problematic due to the inconsistent temporal coverages, spatial resolutions, and crop-specific allocations. Here we reconstructed a comprehensive dataset for crop-specific N fertilization at 5-arc-min resolution (~10 km by 10 km) during 1961-2020, including N application rate, types, and placements. The N fertilization data was segmented by 21 crop groups, 13 fertilizer types, and 2 fertilization placements. Comparison analysis showed that our dataset is aligned with previous estimates. Our spatiotemporal N fertilization dataset could be used for the land surface models to quantify the effects of agricultural N fertilization practices on food security, climate change, and environmental sustainability.
氮（N）是作物生长的重要养分。然而，氮肥的过量使用导致了一系列严重的全球环境问题。最近的研究表明，已经创建了多个具有不同时间或空间分辨率的农业氮肥应用数据集，但由于时间覆盖范围、空间分辨率和作物特定分配不一致，如何同步和使用这些数据集成为一个问题。在这里，我们重建了一个全面的数据集，用于 1961-2020 年间以 5 弧分分辨率（~10 公里×10 公里）的特定作物氮肥施肥，包括施用量、类型和位置。氮肥数据按 21 个作物组、13 种肥料类型和 2 种施肥位置进行了分割。比较分析表明，我们的数据集与以前的估计相符。我们的时空氮肥施肥数据集可用于土地表面模型，以量化农业氮肥施肥实践对粮食安全、气候变化和环境可持续性的影响。
Zotero 插件
