Effects of Long-Term Organic Substitution on Soil Nitrous Oxide Emissions in a Tea (Camellia sinensis L.) Plantation in China
文献类型: 外文期刊
作者: Zhidan Wu;Wei Hua;Kang Ni;Xiangde Yang;Fuying Jiang
作者机构:
关键词: influencing factors;nitrous oxide emission;organic substitution;tea plantation;tea yield
期刊名称: Agronomy
ISSN: 2073-4395
年卷期: 2025 年 15 卷 2 期
页码:
收录情况: SCIE(2025版)
摘要: Nitrous oxide (N2O) is a major greenhouse gas (GHG) responsible for global warming. Improper fertilization in agricultural fields, particularly excessive nitrogen (N) application, accelerates soil N2O emissions. Though partial substitution with organic fertilizer has been implemented to mitigate these emissions, the effect on perennial systems, such as tea plantations, remains largely unexplored. Therefore, the present study monitored soil N2O emissions for a year in a tea plantation in South China under the following treatments: no N fertilizer (control, CK), chemical fertilizer alone (CF), replacing 40% of chemical fertilizer with organic fertilizer (CF + OF), and organic fertilizer alone (OF). Our results showed that the annual cumulative N2O emissions from the plantation soil ranged from 1.03 to 3.43 kg N2O-N ha−1. The cumulative N2O emissions, the yield-scaled N2O emissions (YSNE), and the N2O-N emission factor (EF) from the soil were the highest under the CF + OF treatment but the lowest under the OF treatment. Further analysis revealed that fertilization, mainly chemical fertilization, increased the soil ammonium (NH4+-N) and nitrate (NO3−-N) levels by 182–387% and 195–258%, respectively, and tea yields by 120–170%. However, tea yield decreased gradually with increasing organic substitution. These results prove that complete organic substitution reduces soil N2O emissions and tea yield and suggest adopting an appropriate substitution rate for optimal effect. Further random forest (RF) modeling identified water-filled pore space (WFPS; 20.27% of total variation), soil temperature (Tsoil; 19.29%), and NH4+-N (18.27%) as the key factors significantly contributing to the changes in soil N2O flux. These findings provide a theoretical foundation for optimizing fertilization regimes for sustainable tea production and soil N2O mitigation.
分类号:
- 相关文献
作者其他论文 更多>>
-
Long-term cultivation of indica–japonica hybrid rice reshapes the sustainability of rice systems by simultaneously enhancing yield, nitrogen use efficiency, and soil health
作者:Jinjia Gan;Xinyue Xu;Sheng Tang;Kefeng Han;Tao Sun;Jinzhao Ma;Xiangde Yang;Xiu Liu;Haoran Fu;Zhihao Pang;Lingli Mao;Lianghuan Wu;Qingxu Ma
关键词:Indica–japonica hybrid rice;Long-term field experiment;Nitrogen use efficiency;Soil quality index
-
Fertility Assessment and Risk Management in Tea Plantations: Role of P-Promoted Metals’ Availability
作者:Ziwen Luo;Yongwang Ju;Linbo Chen;Xiangde Yang;Yaqin Long;Xue Liu
关键词:available concentration;fertility assessment;fertilizers;metals;tea plantation
-
Targeted mutagenesis and functional marker development of two Bna.TAC1s conferring novel rapeseed germplasm with compact architecture
作者:Bin Feng;Yu Wang;Xiaolong Zhang;Tingting Mu;Biaoming Zhang;Yan Li;Haitao Zhang;Wei Hua;Wenya Yuan;Haitao Li
关键词:
-
Effects of Long-Term Nitrogen Fertilization on Nitrous Oxide Emission and Yield in Acidic Tea (Camellia sinensis L.) Plantation Soils
作者:Fuying Jiang;Yunni Chang;Jiabao Han;Xiangde Yang;Zhidan Wu
关键词:acidic soil;driving factors;long-term N application;N2O flux;tea-plantation system
-
Contrasting Responses of N2O Mitigation to Different Nitrification Inhibitors in Tea Plantation Soils
作者:Wei Hua;Siyun Niu;Chenguang Zhao;Jie Wang;Xiangde Yang;Yuanzhi Shi;Kang Ni
关键词:ammonia-oxidizing microbes;mitigation;nitrification inhibitor;nitrification rate;nitrous oxide;tea plantation soil
-
Unraveling the signaling pathways of plant cold stress: current insights and future directions
作者:Chen Peng;Wei Hua;Jing Liu
关键词:cold responsive gene;cold stress;intelligent breeding;regulatory mechanism;signaling pathway
-
BnaGSK3-BnaIDD16 module negatively regulates branch angle in Brassica napus
作者:Xiaodong Wang;Jun Yu;Ying Cai;Min Tang;Liang Zhang;Feng Chen;Jinglin Liu;Hongfang Liu;William Terzaghi;Wei Hua;Jiefu Zhang;Ming Zheng
关键词:BnaGSK3;BnaIDD16;branch angle;Brassica napus;brassinosteroid