The effects of crop residues and air temperature on variations in interannual ecosystem respiration in a wheat-maize crop rotation in China
文献类型：期刊论文
| 作者 | Bao, Xueyan1; Wen, Xuefa2; Sun, Xiaomin2; Bao, Guirong1 |
| 刊名 | AGRICULTURE ECOSYSTEMS & ENVIRONMENT
 |
| 出版日期 | 2022-02-28 |
| 卷号 | 325页码:8 |
| 关键词 | Interannual variation Eddy covariance Carbon cycle Field management practices Climatic change |
| ISSN号 | 0167-8809 |
| DOI | 10.1016/j.agee.2021.107728 |
| 通讯作者 | Bao, Xueyan(baoxueyan@imun.edu.cn) |
| 英文摘要 | Understanding the mechanisms of interannual variations (IAVs) in cropland respiration (ER) can aid in optimizing field management strategies and accurately assessin bon budget. The long-term carbon exchange over a (winter) wheat-(summer) maize double-cropping system was measured with the eddy covariance technique to identify the IAVs in ER and the influencing factors, and investigate whether field management strategy (crop residue retuning) affects ER. Results showed that the growing season-related ER values for wheat (w-ER) and maize (s-ER) ranged from 471.77 to 681.96 g C m(-2) y(-1) and from 433.91 to 826.89 g C m(-2) y(-1), respectively, during 2007-2012. Pearson's correlation analysis indicated that the IAVs in w-ER were controlled by the crop residual carbon levels for maize from the prior season (s-C-r) and the gross ecosystem productivity. The seasonal mean air temperature (T-a) and maximum leaf area index for maize were found to be factors affecting the IAVs in s-ER. Because of the high correlation between the controlling factors, path analysis was used to deconvolute their respective contributions to the IAVs in ER. Integration analysis of path coefficients showed that s-C-r and T-a were the primary influencing factors, because they explained approximately 81% and 68% of the IAVs in ER for wheat and maize, respectively. Overall, our findings highlighted the importance of crop residue management for agroecosystem carbon cycling, but its effects may depend on ecosystem types. |
| WOS关键词 | CARBON-DIOXIDE EXCHANGE ; GROSS PRIMARY PRODUCTION ; ENERGY-BALANCE CLOSURE ; SOIL RESPIRATION ; WINTER-WHEAT ; SEASONAL-VARIATION ; NET ; BUDGET ; SITES ; ASSIMILATION |
| 资助项目 | Doctor Start-up Fund of Inner Mongolia Minzu University,China[BS495] |
| WOS研究方向 | Agriculture ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000719278300001 |
| 出版者 | ELSEVIER |
| 资助机构 | Doctor Start-up Fund of Inner Mongolia Minzu University,China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/167958]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Bao, Xueyan |
| 作者单位 | 1.Inner Mongolia Minzu Univ, Agr Sch, Tongliao, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bao, Xueyan,Wen, Xuefa,Sun, Xiaomin,et al. The effects of crop residues and air temperature on variations in interannual ecosystem respiration in a wheat-maize crop rotation in China[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2022,325:8. |
| APA | Bao, Xueyan,Wen, Xuefa,Sun, Xiaomin,&Bao, Guirong.(2022).The effects of crop residues and air temperature on variations in interannual ecosystem respiration in a wheat-maize crop rotation in China.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,325,8. |
| MLA | Bao, Xueyan,et al."The effects of crop residues and air temperature on variations in interannual ecosystem respiration in a wheat-maize crop rotation in China".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 325(2022):8. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。