Jianwen Zou

1 month ago | nature.com | Xiangcheng Zhu |Feng Zhou |Peter Smith |Hanqin Tian |Jianwen Zou |Shuwei Liu | +3 more

AbstractAgricultural soils contribute ~52% of global anthropogenic nitrous oxide (N2O) emissions, predominantly from nitrogen (N) fertilizer use. Global N2O emission factors (EFs), estimated using IPCC Tier 1 methodologies, largely rely on short-term field measurements that ignore legacy effects of historic N fertilization. Here we show, through data synthesis and experiments, that EFs increase over time.

Sep 17, 2024 | nature.com | Chao Wang |Baojing Gu |Feng Zhou |Deli Chen |Hanqin Tian |Philippe Ciais | +1 more

AbstractMaize and wheat are two major staple foods that collectively contribute two-thirds of the world’s grain supply. The extensive use of nitrogen (N) fertilizers during the cultivation of both crops leads to significant losses of reactive nitrogen (Nr) into the environment. Here, using machine learning algorithms, we generate high-resolution maps of crop-specific soil Nr losses based on global field measurements.