Soil organic carbon decomposition responding to warming under nitrogen addition across Chinese vegetable soils
文献类型: 外文期刊
作者: Xu, Xintong 1 ; Zhang, Qianqian 1 ; Song, Mengxin 1 ; Zhang, Xi 1 ; Bi, Ruiyu 1 ; Zhan, Liping 1 ; Dong, Yubing 1 ; Xiong, Zhengqin 1 ;
作者机构: 1.Nanjing Agr Univ, Coll Resources & Environm Sci, Jiangsu Key Lab Low Carbon Agr & GHGs Mitigat, Nanjing 210095, Peoples R China
2.Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Hangzhou 311300, Peoples R China
3.Jiangsu Acad Agr Sci, Huaiyin Inst Agr Sci Xuhuai Reg Jiangsu, Huaian 223001, Peoples R China
关键词: Temperature sensitivity; SOC decomposition; Vegetable soils; Microbial parameters; Resource stoichiometry
期刊名称:ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY ( 影响因子:7.129; 五年影响因子:7.284 )
ISSN: 0147-6513
年卷期: 2022 年 242 卷
页码:
收录情况: SCI
摘要: Chemical fertilization in excess and warming disrupt the soil microbes and alter resource stoichiometry, particularly in intensive vegetable soils, while the effects of these variables on the temperature sensitivity of soil organic carbon (SOC) decomposition (Q10) and SOC stability remain elusive. Thus, we collected six long-term vegetable soils along a climatic gradient to examine the microbial mechanisms and resource stoichiometry ef-fects on fluctuations in Q10 and SOC stability induced by warming and fertilization from vegetable soils. Our results showed that the SOC decomposition was dominated by microbes and regulated by stoichiometry. Compared to cold sites, higher Q10 of SOC decomposition was observed in warm sites, accompanied by lower enzyme activities, microbial CUE, and C:N ratio. In this context, warming reduced SOC stability as evidenced by up to 31.8% greater Q10 (1.45) at warm sites than at cold sites (1.10) owing to less richness of microbial communities and lower microbial CUE. The relatively lower pH and labile organic C value restricted the development of microbial richness, and decreased C-and N-related enzyme activities and a lower C:N ratio resulted in microbial CUE reduction. Additionally, N fertilization altered the C:N imbalance and enhanced SOC stability in vegetable soils, exhibiting an increase of Q10 values, particularly of great importance in warm sites. Collectively, our findings emphasize the importance of the microbial mechanism and resource stoichiometry in predicting variations in Q10 and fluctuations in SOC stability, and provide theoretical advice on improving management policies in the context of warming and fertilization from vegetable soils.
- 相关文献
作者其他论文 更多>>
-
Machine learning algorithms realized soil stoichiometry prediction and its driver identification in intensive agroecosystems across a north-south transect of eastern China
作者:Xu, Xintong;Dong, Yubing;Zhan, Liping;Bi, Ruiyu;Song, Mengxin;Xiong, Zhengqin;Xu, Xintong;Xiao, Chao;Dong, Yubing;Pan, Jun
关键词:Machine learning; Prediction performance; Nutrient stoichiometry; Climate zones; Feature importance assessment
-
Contributions of Ammonia-Oxidizing Archaea and Bacteria to Nitrous Oxide Production in Intensive Greenhouse Vegetable Fields
作者:Dong, Yubing;Xu, Xintong;Zhang, Junqian;Jiao, Ying;Wang, Bingxue;Wang, Chenyuan;Xiong, Zhengqin;Dong, Yubing
关键词:intensive vegetable production; greenhouse gas; nitrification inhibitor; ammonia-oxidizing archaea (AOA); ammonia-oxidizing bacteria (AOB)
-
Biochar Mitigated Yield-Scaled N2O and NO Emissions and Ensured Vegetable Quality and Soil Fertility: A 3-Year Greenhouse Field Observation
作者:Zhang, Xi;Zhang, Qianqian;Xu, Xintong;Dong, Yubing;Xiong, Zhengqin;Zhang, Xi;Zhang, Qianqian;Dong, Yubing
关键词:intensive vegetable production; biochar; nitrous oxide; nitric oxide; crop performance; soil fertility
-
N2O and NO production and functional microbes responding to biochar aging process in an intensified vegetable soil
作者:Zhang, Xi;Zhang, Junqian;Song, Mengxin;Dong, Yubing;Xiong, Zhengqin;Dong, Yubing
关键词:Vegetable soil; Aged biochar; Nitrous oxide; Nitric oxide; Gene abundance
-
Biochar and organic substitution improved net ecosystem economic benefit in intensive vegetable production
作者:Bi, Ruiyu;Zhang, Qianqian;Zhan, Liping;Xu, Xintong;Zhang, Xi;Dong, Yubing;Xiong, Zhengqin;Zhang, Qianqian;Dong, Yubing;Yan, Xiaoyuan
关键词:Biochar amendment; Organic substitution; Crop production; Reactive nitrogen; Nitrogen footprint; Net ecosystem economic benefit
-
Dynamic responses of ammonia volatilization to different rates of fresh and field-aged biochar in a rice-wheat rotation system
作者:Dong, Yubing;Wu, Zhen;Zhang, Xi;Feng, Lian;Xiong, Zhengqin;Dong, Yubing
关键词:Biochar; Field aged biochar; Ammonia volatilization; Nitrogen use efficiency; Rice-wheat rotation
-
Biochar amendment reduced greenhouse gas intensities in the rice-wheat rotation system: six-year field observation and meta-analysis
作者:Wu, Zhen;Zhang, Xi;Dong, Yubing;Li, Bo;Xiong, Zhengqin;Dong, Yubing;Li, Bo
关键词:biochar; methane; nitrous oxide; rice-wheat rotation system; meta-analysis; mitigation