Green manure removal with reduced nitrogen improves saline-alkali soil organic carbon storage in a wheat-green manure cropping system

The incorporation of green manure into cropping systems is a potential strategy for sequestering soil carbon (C), especially in saline-alkali soil. Yet, there are still unknown about the substitution impacts of green manure on nitrogen (N) fertilizer in wheat-green manure multiple cropping system. H...

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Veröffentlicht in:The Science of the total environment 2024-05, Vol.926, p.171827-171827, Article 171827
Hauptverfasser: Chang, Fangdi, Zhang, Hongyuan, Zhao, Na, Zhao, Peiyi, Song, Jiashen, Yu, Ru, Kan, Zhengrong, Wang, Xiquan, Wang, Jing, Liu, Hanjiang, Han, Dongxun, Wen, Xinya, Li, Yuyi
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Sprache:eng
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Zusammenfassung:The incorporation of green manure into cropping systems is a potential strategy for sequestering soil carbon (C), especially in saline-alkali soil. Yet, there are still unknown about the substitution impacts of green manure on nitrogen (N) fertilizer in wheat-green manure multiple cropping system. Herein, a five-year field experiment was performed to determine the impact of three levels of N fertilizer inputs [i.e., N fertilizer reduced by 0 % (100N), 10 % (90 N), and 20 % (80 N)] with aboveground biomass of green manure removal (0GM) and return (100GM) on soil organic carbon (SOC) storage and its primary determinants. The results demonstrated that no significant interaction on SOC storage was detected between green manure and N fertilizer management. 80 N enhanced SOC storage in bulk soil by 7.4 and 13.2 % in 0–20 cm soil depth relative to 100 N and 90 N (p 
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2024.171827