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农作物残留物利用的时空空间动态推动了中国地区的碳减排

Zhijuan Yang^1,2, Min Shang^3,4, Jiang Sun^1,2

¹Biomass Energy Technology Research Centre, Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture and Rural Affairs), Biogas Institute of Ministry of Agriculture and Rural Affairs, Section 4-13, Renmin South Road, Chengdu, 610041, People's Republic of China.

Scientific reports

|October 3, 2025

概括

在四川,农作物残留物 (CR) 的利用大大提高了碳封存和缓解,能源应用产生了最大的二氧化碳减排. 这项研究突出了CRCR的重点.

科学领域:

农业科学农业科学
环境科学环境科学
气候变化缓解缓解气候变化缓解

背景情况:

实现中国的碳中和目标需要有效的碳封存和减缓战略在农业.
全面利用作物残留物 (CR) 为农业碳管理提供了重大机会.

研究的目的:

分析30年来四川省作物残留产量的时空变化.
量化全面利用作物残留物的二氧化碳 (CO2) 缓解潜力.

主要方法:

基于播种面积 (玉米,大菜) 的作物残留产量的统计分析.
计算用于肥料,料和能源替代的CR利用能力.
基于利用途径,特别是能源转换的二氧化碳减排估计.

主要成果:

农作物残留产量在过去30年中略有增加,主要是由于玉米和大麻种植的扩大.
从2015年至2022年,CR利用取代了重要的肥料成分,支持1576万只绵羊单位,并每年取代2.33万煤炭.
年度二氧化碳减排达到8.40万,其中能源利用是主要贡献者.

结论:

综合利用作物残留物是四川农业碳减排的一个关键战略.
二氧化碳减排的地理分布集中在成都平原,东北和四川南部.
最大限度地利用CR,特别是能源,对于推进区域碳减排目标至关重要.

关键词:

减少二氧化碳排放的方法综合利用CR的综合利用在CR的收益率上,CR的收益率.四川省的四川省是一个省.时间空间的变化.

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