文献类型： 外文期刊

作者： Yu, Haiyang ¹ ; Han, Xing ³ ; Zhang, Xuechen ⁴ ; Meng, Xiangtian ⁴ ; Yue, Zhengfu ⁵ ; Liu, Xinhui ¹ ; Zheng, Ningguo ³ ; Li, Yaying ¹ ; Yu, Yongxiang ¹ ; Yao, Huaiying ¹ ;

作者机构： 1.Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Ningbo Observat & Res Stn, Xiamen 361021, Peoples R China

2.CAS Haixi Ind Technol Innovat Ctr Beilun, Zhejiang Key Lab Urban Environm Proc & Pollut Cont, Ningbo 315830, Peoples R China

3.Wuhan Inst Technol, Res Ctr Environm Ecol & Engn, Sch Environm Ecol & Biol Engn, Wuhan 430205, Peoples R China

4.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Peoples R China

5.Chinese Acad Trop Agr Sci, Key Lab Low carbon Green Agr Trop Reg China, Minist Agr & Rural Affairs, Hainan Key Lab Trop Ecocircular Agr,Environm & Pla, Haikou 571101, Peoples R China

6.Chinese Acad Trop Agr Sci, Hainan Danzhou Trop Agroecosyst Natl Observat & Re, Danzhou 571737, Peoples R China

7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

关键词： Tea gardens; Fertilization regimes; Nitrogen oxide emissions; Meta-analysis

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：9.8； 五年影响因子：9.6 ）

ISSN： 0048-9697

年卷期： 2023 年 871 卷

页码：

收录情况： SCI

摘要： Tea gardens have been widely documented to be hotspots for nitrogen (N) oxide emissions (i.e., nitrous oxide (N2O) and nitric oxide (NO)). However, a quantitative understanding of N oxide emissions related to different fertilizer regimes and the main controlling factors is lacking. Here, we performed a meta-analysis of 56 peer-reviewed publications on N oxide emissions from global tea gardens over the past three decades. Overall, fertilization increased N2O and NO emissions (p < 0.001) by 584 % and 790 %, respectively. The stimulating effect of fertilizer on N2O and NO emissions was mainly related to high N application rates. Furthermore, organic fertilizer treatment, combined fertilizer treatment, biochar amendment, and inhibitor amendment reduced N2O emissions (p < 0.05) by 63 %, 64 %, 69 %, and 94 %, respectively, relative to chemical fertilizer treatment. For NO emissions, only biochar amendment decreased fertilizer-driven stimulation (by 80 %, p < 0.05). Notably, the dominant factors that influenced fertilizer-induced N2O and NO emissions in tea gardens were fertilization regimes, climatic conditions, and soil properties. On a global scale, fertilization increased mean N2O and NO emissions (p < 0.05) from global tea gardens by 44.5 Gg N yr-1 and 34.3 Gg N yr-1, respectively, whereas compared with no amendment application, inhibitors reduced N2O emissions (p < 0.05) by 32.2 Gg N yr-1 and biochar reduced NO emissions (p < 0.05) by 23.6 Gg N yr-1. Our results suggest