Daily, seasonal and inter-annual variations in CO2 fluxes and carbon budget in a winter-wheat and summer-maize rotation system in the North China Plain
文献类型：期刊论文
| 作者 | Tao, Fulu1,2; Li, Yibo1,2; Chen, Yi1,2; Yin, Lichang1,2; Zhang, Shuai1,2 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2022-09-15 |
| 卷号 | 324页码:15 |
| 关键词 | Agricultural system Carbon sequestration Climate change mitigation Climate smart agriculture Eddy covariance GHG emission |
| ISSN号 | 0168-1923 |
| DOI | 10.1016/j.agrformet.2022.109098 |
| 通讯作者 | Tao, Fulu(taofl@igsnrr.ac.cn) |
| 英文摘要 | Investigating CO2 fluxes and carbon budget in agro-ecosystems is essential to develop climate smart agriculture. Here, we conducted a thorough analysis on the daily, seasonal and inter-annual variations in CO2 fluxes and carbon budget in a winter-wheat and summer-maize rotation system in the North China Plain (NCP) to better understand the CO2 flux exchange and the underlying mechanisms of carbon budget dynamics. During 2003-2010, the inter-annual variability of monthly gross primary productivity was significantly correlated with leaf area index (LAI), temperature and net radiation. The inter-annual variability of monthly ecosystem respiration was signifi-cantly correlated with LAI, soil temperature and moisture. Daily and monthly variability in net ecosystem ex-change (NEE) was significantly correlated with LAI. At a seasonal scale, soil moisture was one of the primary factors controlling carbon sequestration of wheat system. Nitrogen application rate and water conditions were the primary factors controlling carbon sequestration of maize system. The NEE for winter wheat system, maize system, and winter wheat-maize rotation system in the NCP ranged from-418 to-29,-448 to-119, and-857 to-274 gCm(-2), respectively. The net biome productivity (NBP) for winter wheat system, maize system, and winter wheat-maize rotation system in the NCP ranged from-223 to 151,-236 to 94, and-239 to 237 gCm(-2), respectively. Taking greenhouse gas (GHG) emissions from irrigation, fertilization, herbicides, fungicide, insecticide, and field oper-ations, the associated net GHG emissions ranged from-39 to 325 gCm(-2) for wheat system and-22 to 287 gCm(-2) for maize system. Wheat and maize systems in the region were a medium source of GHG emissions in most of years, mainly due to the large application rates of fertilization and irrigation. Our findings gain new insights into the mechanisms underlying the inter-annual variations in CO2 fluxes and carbon budget, highlighting the optimization of genotype, environment and management interactions to realize climate smart agriculture. |
| WOS关键词 | EDDY COVARIANCE ; DIOXIDE EXCHANGE ; ECOSYSTEM RESPIRATION ; SOIL RESPIRATION ; CROPPING SYSTEMS ; CROPLAND ; PRODUCTIVITY ; BALANCE ; TEMPERATURE ; MANAGEMENT |
| 资助项目 | National Natural Science Foundation of China[31761143006] |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000861218300007 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/185210]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Tao, Fulu |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tao, Fulu,Li, Yibo,Chen, Yi,et al. Daily, seasonal and inter-annual variations in CO2 fluxes and carbon budget in a winter-wheat and summer-maize rotation system in the North China Plain[J]. AGRICULTURAL AND FOREST METEOROLOGY,2022,324:15. |
| APA | Tao, Fulu,Li, Yibo,Chen, Yi,Yin, Lichang,&Zhang, Shuai.(2022).Daily, seasonal and inter-annual variations in CO2 fluxes and carbon budget in a winter-wheat and summer-maize rotation system in the North China Plain.AGRICULTURAL AND FOREST METEOROLOGY,324,15. |
| MLA | Tao, Fulu,et al."Daily, seasonal and inter-annual variations in CO2 fluxes and carbon budget in a winter-wheat and summer-maize rotation system in the North China Plain".AGRICULTURAL AND FOREST METEOROLOGY 324(2022):15. |
入库方式： OAI收割
来源：地理科学与资源研究所
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