Hysteretic relationship between plant productivity and methane uptake in an alpine meadow
文献类型：期刊论文
| 作者 | Chen, Weinan1,2; Wang, Bingxue2; Zhang, Fangyue1,2; Li, Zhaolei2; Wang, Jinsong2; Yu, Guirui1,2 ; Wen, Xuefa1,2; Niu, Shuli1,2
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| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
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| 出版日期 | 2020-07-15 |
| 卷号 | 288页码:8 |
| 关键词 | Plant productivity Methane flux Hysteresis Alpine meadow |
| ISSN号 | 0168-1923 |
| DOI | 10.1016/j.agrformet.2020.107982 |
| 通讯作者 | Niu, Shuli(sniu@igsnrr.ac.cn) |
| 英文摘要 | The relationship between methane (CH4) and gross primary productivity (GPP) remains elusive and the underlying mechanism is even far from clear. To explore this relationship, we continually monitored CH4 flux and CO2 flux by eddy covariance technique in an alpine meadow on the Qinghai-Tibetan Plateau, China, during June 2015-December 2017. We found a parabolic-like relationship of net CH4 flux with GPP change in both the morning and afternoon at diurnal scale. However, with similar GPP, CH4 uptake was stronger in the morning than that in the afternoon, forming an anti-clockwise hysteretic relationship between CH4 and GPP in all the three years. Meanwhile, similar hysteresis loop was also observed between CH4 flux and photosynthetically active radiation (PAR), and between PAR and air temperature (Ta) during all the three years, with stronger CH4 uptake (or lower Ta) in the morning than that in the afternoon at the same PAR. Results from our study suggested that the hysteretic relationship between CH4 flux and GPP might be mainly induced by the hysteresis between PAR and Ta. The similar hysteresis pattern between CH4 flux (or Ta) and PAR in the non-growing season further confirmed our hypothesis. The findings provide new insights into the coupling of plant photosynthetic activity and net CH4 flux and help to improve model parameterization for simulating CO2-CH4 interaction processes. |
| WOS关键词 | TIBETAN PLATEAU ; VASCULAR PLANTS ; SPATIAL VARIABILITY ; TUNDRA ECOSYSTEMS ; CARBON TURNOVER ; DIEL VARIATION ; CH4 EMISSION ; WET-SEDGE ; VEGETATION ; CO2 |
| 资助项目 | National Natural Science Foundation of China[31625006] ; National Natural Science Foundation of China[31988102] ; CAS international collaboration program[131A11KYSB20180010] |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000538107200002 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; CAS international collaboration program |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/159486]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Niu, Shuli |
| 作者单位 | 1.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, 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 | Chen, Weinan,Wang, Bingxue,Zhang, Fangyue,et al. Hysteretic relationship between plant productivity and methane uptake in an alpine meadow[J]. AGRICULTURAL AND FOREST METEOROLOGY,2020,288:8. |
| APA | Chen, Weinan.,Wang, Bingxue.,Zhang, Fangyue.,Li, Zhaolei.,Wang, Jinsong.,...&Niu, Shuli.(2020).Hysteretic relationship between plant productivity and methane uptake in an alpine meadow.AGRICULTURAL AND FOREST METEOROLOGY,288,8. |
| MLA | Chen, Weinan,et al."Hysteretic relationship between plant productivity and methane uptake in an alpine meadow".AGRICULTURAL AND FOREST METEOROLOGY 288(2020):8. |
入库方式： OAI收割
来源：地理科学与资源研究所
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