11/21/2023 0 Comments Farm together crop levelsFor example, agricultural N pollutants due to emitting, run-offs and leaching could result in severe air pollution (i.e., fine particle matter and aerosols) 5, 6, global climate change (i.e., ozone depletion in the stratosphere) 7, 8, eutrophication 9 and compromised water quality in surface and groundwater aquatic ecosystems 10, 11, biodiversity loss 12 as well as acidification in terrestrial ecosystems 13. However, excess N fertilizers are escaping into the environment, via a cascade of processes through atmospheric, aquatic, marine and terrestrial pools 3, 4. Since the development of the Haber-Bosch process, the consumption of synthetic N fertilizers has increased exponentially to meet the food demand of growing human population 1, 2. Nitrogen (N) is one of the most essential nutrients for crop production. 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. Comparison analysis showed that our dataset is aligned with previous estimates. The N fertilization data was segmented by 21 crop groups, 13 fertilizer types, and 2 fertilization placements. 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. 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. However, the overuse of N fertilizers has led to a series of devastating global environmental issues. Nitrogen (N) is an important nutrient for crop growth.
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