Variations and controlling factors of carbon dioxide and methane fluxes in a meadow-rice ecosystem in a semi-arid region
文献类型：期刊论文
| 作者 | Bao, Yongzhi3,5; Liu, Tingxi3,5; Duan, Limin3,5; Tong, Xin3,5; Zhang, Yongqiang1; Wang, Guoqiang6; Singh, V. P.2,4 |
| 刊名 | CATENA
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 215页码:9 |
| ISSN号 | 0341-8162 |
| 关键词 | Greenhouse gases Meadow-rice mixed ecosystem Eddy covariance Carbon dioxide flux Methane flux |
| DOI | 10.1016/j.catena.2022.106317 |
| 通讯作者 | Liu, Tingxi(txliu1966@163.com) |
| 英文摘要 | Although previous studies have illustrated the variations in carbon dioxide (CO2) and methane (CH4) fluxes for different types of wetlands, there have been few reports on those of meadow-rice mixed ecosystems in semi-arid regions. In this study, eddy covariance (EC) technique was utilized to measure CO2 and CH4 fluxes for a meadow rice mixed ecosystem during the growing season in 2020 in the Horqin Sandy Land, North China. The results indicated obvious diurnal and seasonal variations in gross primary productivity (GPP), ecosystem respiration (R-eco), net CO2 exchange (NEE), and CH4 flux, with high levels during the vigorous growing stage and low levels during the early and late growing stages. The mean daily GPP, Reco , NEE, and CH4 were 11.33 g CO2 m(-2) d-1 , 6.37 g CO2 m(-2) d-1 ,-4.96 g CO2 m(-2) d-1 , and 81.97 mg CH4 m- 2 d-1 , respectively. The accumulated values of GPP, Reco , NEE, and CH4 during the growing season were 1,756.54 g CO2 m- 2 (478.62 g C m(-2)), 987.30 g CO2 m(-2) (269.02 g C m(-2)),-769.24 g CO2 m(-2) (-209.60 g C m(-2)), and 12.7 g CH4 m- 2 (9.55 g C m(-2)), respectively, showing that the meadow-rice mixed ecosystem acted as CO2 sink and CH4 source. Low intensity CH4 emissions were maintained during the dry period and were controlled by soil moisture (SM). The seasonal dynamics of GPP, R-eco , and CH4 throughout the growing season were mainly controlled by soil temperature (T-s) and air temperature (T-a). |
| WOS关键词 | GROSS PRIMARY PRODUCTIVITY ; EDDY COVARIANCE ; TERRESTRIAL ECOSYSTEMS ; SEASONAL-VARIATION ; TEMPORAL VARIATION ; NORTHERN CHINA ; CO2 EXCHANGE ; TEMPERATE ; GRASSLAND ; RESPIRATION |
| 资助项目 | National Natural Science Foundation of China[51620105003] ; National Natural Science Foundation of China[51869017] ; National Natural Science Foundation of China[51939006] ; Ministry of Education Innovative Research Team[IRT_17R60] ; Ministry of Science and Technology Innovative Research Team in Priority Areas[2015RA4013] ; Inner Mongolia Major Science and Technol-ogy Projects[2020ZD0009] ; Inner Mongolia Major Science and Technol-ogy Projects[KJXM-EEDS-2020005] ; Nat-ural Science Foundation of Inner Mongolia Autonomous Region of China[2020JQ06] |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000798079700003 |
| 资助机构 | National Natural Science Foundation of China ; Ministry of Education Innovative Research Team ; Ministry of Science and Technology Innovative Research Team in Priority Areas ; Inner Mongolia Major Science and Technol-ogy Projects ; Nat-ural Science Foundation of Inner Mongolia Autonomous Region of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/178072]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Liu, Tingxi |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Texas A&M Univ, Dept Biol & Agr Engn, College Stn, TX 77843 USA 3.Inner Mongolia Agr Univ, Water Conservancy & Civil Engn Coll, Hohhot 010018, Peoples R China 4.Texas A&M Univ, Zachry Dept Civil Engn, College Stn, TX 77843 USA 5.Inner Mongolia Water Resource Protect & Utilizat K, Hohhot 010018, Peoples R China 6.Beijing Normal Univ, Coll Water Sci, Beijing 100875, Peoples R China |
| 推荐引用方式 GB/T 7714 |
Bao, Yongzhi,Liu, Tingxi,Duan, Limin,et al. Variations and controlling factors of carbon dioxide and methane fluxes in a meadow-rice ecosystem in a semi-arid region [J]. CATENA,2022,215:9. |
| APA |
Bao, Yongzhi.,Liu, Tingxi.,Duan, Limin.,Tong, Xin.,Zhang, Yongqiang.,...&Singh, V. P..(2022). Variations and controlling factors of carbon dioxide and methane fluxes in a meadow-rice ecosystem in a semi-arid region .CATENA,215,9. |
| MLA |
Bao, Yongzhi,et al." Variations and controlling factors of carbon dioxide and methane fluxes in a meadow-rice ecosystem in a semi-arid region ".CATENA 215(2022):9. |
入库方式： OAI收割
来源：地理科学与资源研究所
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