数字农科院2.0

Up-bottom assessments of nutrient supply and gaseous pollutant from Chinese wheat straw field management

文献类型： 外文期刊

作者： Dongxue Li;Jun Gu;Xiaoqin Chen;Yiliu Wang;Dianjun Lu;Solomon Yokamo;Huoyan Wang;Peng Hou

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期刊名称： Scientific Data

ISSN： 2052-4463

年卷期： 2024 年 11 卷 1 期

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收录情况： SCIE（2024版）

摘要： To achieve resource efficiency, and carbon neutrality, it is vital to evaluate nutrient supply and gaseous pollutant emissions associated with field management of bio-straw resources. Previous straw yield estimates have typically relied on a constant grain-to-straw yield ratio without accounting for grain yield levels in a given region. Addressing this high-resolution data gap, our study introduces a novel empirical model for quantifying grain-to-straw yield, which has been used to gauge wheat straw field management practices at the city level during 2011–2015. Utilizing both statistical review and GIS-based methods, average nitrogen (N), phosphorus (P), and potassium (K) supplies from straw field management stood at 1510, 1229, and 61700 tons, respectively. Average emissions of PM2.5, SO2, NOx, NH3, CH4, and CO2 due to straw burning were 367, 41, 160, 18, 165, and 70,644 tons, respectively. We also reported uncertainty from Monte Carlo model as the 5th-95th percentiles of estimated nutrient supply and gaseous pollutant. These insights will provide foundational support for the sustainable and environmentally friendly management of wheat straw in China.

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