您好，欢迎访问北京市农林科学院 机构知识库！
北京市农林科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Optimal nitrogen management increased topsoil organic carbon stock and maintained whole soil inorganic carbon stock to increase soil carbon stock-A 15-year field evidence

文献类型： 外文期刊

作者： Wang, Xingbang 1 ; Zhang, Ling 4 ; Lakshmanan, Prakash 3 ; Chen, Ji 7 ; Zhang, Wushuai 1 ; Chen, Xinping 1 ;

作者机构： 1.Southwest Univ, Coll Resources & Environm, Chongqing 400715, Peoples R China

2.Southwest Univ, Acad Agr Sci, Chongqing 400715, Peoples R China

3.Southwest Univ, Interdisciplinary Res Ctr Agr Green Dev Yangtze Ri, Chongqing 400715, Peoples R China

4.Inst Plant Nutr, Beijing Acad Agr & Forestry Sci, Resources & Environm, Beijing 100097, Peoples R China

5.Guangxi Acad Agr Sci, Sugarcane Res Inst, Nanning 530007, Peoples R China

6.Univ Queensland, Queensland Alliance Agr & Food Innovat, St Lucia, Qld 4067, Australia

7.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China

关键词： Nitrogen management; Soil organic carbon; Soil inorganic carbon; Wheat-maize rotation

期刊名称：AGRICULTURE ECOSYSTEMS & ENVIRONMENT （ 影响因子：6.4； 五年影响因子：6.8 ）

ISSN： 0167-8809

年卷期： 2025 年 379 卷

页码：

收录情况： SCI

摘要： Nitrogen application significantly impacts soil organic carbon (SOC) and soil inorganic carbon (SIC) stocks, both of which are crucial for soil carbon sequestration. However, the effects of nitrogen fertilizer on the dynamics of SOC and SIC stocks remain poorly understood. Over a 15-year wheat-maize rotation experiment conducted on calcareous alluvial soil in temperate continental monsoon climate, we quantitatively analyzed crop carbon return and dynamics of SOC and SIC stocks among soil layers. Compared to conventional nitrogen management (Con. N), optimal nitrogen management (Opt.N) increased crop carbon return by 130 kg C ha- 1 yr- 1. There was no significant difference in SOC stock between Opt.N and Con.N, despite Opt.N used 39.4 % less nitrogen input compared to Con.N. In the topsoil, Opt.N maintained SIC levels similar to those of the Control and significantly increased by 7.22 % compared to Con.N. The Con.N treatment reduced SIC stock by 10.1 % compared to the Control. Furthermore, Opt.N had no significant negative effect on SIC stock in subsoil, thereby maintaining the whole SIC stock. After 15 years, Opt.N achieved a soil carbon stock of 52.7 Mg C ha-1, outperforming Con.N. SOC dominated the topsoil carbon stock, while SIC played a more crucial role in the subsoil. Overall, Opt.N outperformed Con.N in terms of the combined SOC and SIC stocks. Our findings suggest that Opt.N can enhance soil carbon stock with lower resource consumption, thereby contributing to global warming mitigation and promoting sustainable low-carbon agriculture.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：北京市农林科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台