Sustained benefits of long-term biochar application for food security and climate change mitigation
文献类型： 外文期刊
作者： Yang, Jingrui 1 ; Xia, Longlong 1 ; Groenigen, Kees Jan van 3 ; Zhao, Xu 1 ; Ti, Chaopu 1 ; Wang, Weilu 4 ; Du, Zhangliu 6 ; Fan, Mingsheng 6 ; Zhuang, Minghao 6 ; Smith, Pete 7 ; Lal, Rattan 8 ; Butterbach-Bahlh, Klaus 9 ; Han, Xiaori 11 ; Meng, Jun 12 ; Liu, Jia 13 ; Cai, Hongguang 14 ; Cheng, Yanhong 15 ; Liu, Xingren 16 ; Shu, Xiangyang 17 ; Jiao, Xiaoyan 18 ; Pan, Zhandong 19 ; Tang, Guangmu 20 ; Yan, Xiaoyuan 1 ;
作者机构： 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Changshu Natl Agroecosyst Observat & Res Stn, Nanjing 211135, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Exeter, Fac Environm Sci & Econ, Dept Geog, Exeter EX4 4RJ, England
4.Yangzhou Univ, Inst Agr Sci, Joint Int Res Lab Agr & Agriprod Safety, Minist Educ China, Yangzhou 225009, Peoples R China
5.Yangzhou Univ, Inst Technol Dev, Joint Int Res Lab Agr & Agriprod Safety, Minist Educ China, Yangzhou 225009, Peoples R China
6.China Agr Univ, Coll Resources & Environm Sci, State Key Lab Nutrient Use & Management, Beijing 100083, Peoples R China
7.Univ Aberdeen, Inst Biol & Environm Sci, Aberdeen AB24 3UU, Scotland
8.Ohio State Univ, Coll Food Agr & Environm Sci, Rattan Lal Ctr Carbon Sequestrat & Management, Columbus, OH 43210 USA
9.Aarhus Univ, Pioneer Ctr Landscape Res Sustainable Agr Futures, Dept Agroecol, DK-8000 Aarhus, Denmark
10.Karlsruhe Inst Technol, Inst Meteorol & Climate Res, D-82497 Garmisch Partenkirchen, Germany
11.Shenyang Agr Univ, Coll Land & Environm, Shenyang 110866, Peoples R China
12.Minist Agr & Rural Affairs, Key Lab Biochar & Soil Improvement, Shenyang 110866, Peoples R China
13.Jiangxi Acad Agr Sci, Inst Soil & Fertilizer & Resources & Environm, Key Lab Acidified Soil Ameliorat & Utilizat, Minist Agr & Rural Affairs, Nanchang 330200, Peoples R China
14.Jilin Acad Agr Sci, Inst Agr Resource & Environm, Key Lab Black Soil Conservat & Utilizat, Minist Agr & Rural Affairs, Changchun 130033, Peoples R China
15.Jiangxi Inst Red Soil & Germplasm Resources, Key Lab Arable Land Improvement & Qual Improvement, Nanchang 330029, Peoples R China
16.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Key Lab Agr Environm, Minist Agr Peoples Republ China, Beijing 100081, Peoples R China
17.Sichuan Normal Univ, Key Lab Land Resources Evaluat & Monitoring Southw, Minist Educ, Chengdu 610066, Peoples R China
18.Shanxi Agr Univ, Coll Resources & Environm, Taiyuan 030031, Peoples R China
19.Gansu Agr Univ, Coll Forestry, Lanzhou 730070, Peoples R China
20.Xinjiang Acad Agr Sci, Inst Agr Resources & Environm, Urumqi 830091, Xinjiang, Peoples R China
关键词： biochar application; long-term benefits; food security; climate change mitigation; soil organic carbon
期刊名称：PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA （ 影响因子：9.1； 五年影响因子：10.6 ）
ISSN： 0027-8424
年卷期： 2025 年 122 卷 33 期
页码：
收录情况： SCI
摘要： Biochar application offers significant potential to enhance food security and mitigate climate change. However, most evidence stems from short-term field experiments (<= 3 y), leaving uncertainty about the long-term sustainability of these benefits, especially with annual biochar additions to soils. To address this knowledge gap, we analyzed a global dataset from 438 studies (3,229 observations) and found that long-term annual biochar application (>= 4 y) not only sustains but often enhances its benefits. These include improved crop yields (+10.8%), reductions in CH4 (-13.5%) and N2O (-21.4%) emissions, and increased soil organic carbon content (+52.5%). In contrast, these benefits tend to diminish over time with single biochar applications due to the aging effect of biochar. Results from 29 global long-term experiments (4 to 12 y) confirm these sustained benefits for crop yield and greenhouse gas mitigation, although the magnitude of effects varies with soil properties, climate, and management practices. To maximize biochar's long-term benefits for global food security and climate change mitigation, it is essential to develop viable strategies, such as applying biochar at intervals of several years while tailoring practices to local soil, climate, and cropping conditions.
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