An automated dynamic chamber system for exchange flux measurement of reactive nitrogen oxides (HONO and NOx) in farmland ecosystems of the Huaihe River Basin, China
文献类型：期刊论文
| 作者 | Tang, Ke1,2; Qin, Min1 ; Fang, Wu1; Duan, Jun1; Meng, Fanhao1,2; Ye, Kaidi1,2; Zhang, Helu1,2; Xie, Pinhua1,2,3; Liu, Jianguo1,2,3; Liu, Wenqing1,2,3
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2020-11-25 |
| 卷号 | 745 |
| ISSN号 | 0048-9697 |
| 关键词 | Automated dynamic chamber Agricultural soil HONO flux NO(x )flux |
| DOI | 10.1016/j.scitotenv.2020.140867 |
| 通讯作者 | Qin, Min(mqin@aiofm.ac.cn) ; Fang, Wu(wfang@aiofm.ac.cn) |
| 英文摘要 | An automated dynamic chamber system was first developed to simultaneously measure the HONO flux and NOx flux. The new dynamic chamber system was applied to field observation, and the HONO and NOx exchange flux of farmland in the Huaihe River Basin was obtained for the first time. The performance of the dynamic chamber system was verified in the field. In the field observation, the diurnal variations of the HONO fluxes and NO fluxes before and after a rainfall event exhibited two different trends. Before the rainfall and in the latter stage after the rainfall, the maxima of the HONO fluxes and NO fluxes occurred in the morning, then decreased gradually. However, during the early stage after the rainfall, the HONO fluxes and NO fluxes gradually increased in the morning and reached their maximum values in the afternoon. During the measurement period, the maximum HONO flux was 7.69 ng N m(-2 )s(-1) and the maximum NO flux was 34.52 ng N m(-2 )s(-1). There was no significant correlation between HONO flux and temperature before the rainfall and in the latter stage after the rainfall period, although the correlation coefficient (R) between HONO flux and temperature reached 0.78 in the early stage after the rainfall period, and the R between NO flux and HONO flux reached more than 0.6 before and after rainfall periods. The HONO flux of fresh soil samples were the same order of magnitude as that of field observations. The field results indicate that soil emissions are an important source of atmospheric HONO during the crop growth stage. Negative NO2 fluxes were found in most observation periods, and there were significant negative linear correlations between NO2 fluxes and atmospheric NO2 concentrations. The R between ambient NO2 concentration and NO2 flux was 0.79, and the compensation point of NO2 was 5 ppbv. (C) 2020 Elsevier B.V. All rights reserved. |
| WOS关键词 | YANGTZE DELTA ; NITRIC-OXIDE ; ACID HONO ; AGRICULTURAL FIELDS ; EMISSIONS ; FOREST ; SURFACE ; ATMOSPHERE ; LANDS |
| 资助项目 | National Natural Science Foundation of China[41875154] ; National Key Research and Development Program of China[2017YFC0209400] ; National Key Research and Development Program of China[2016YFC0201000] ; National Key Research and Development Program of China[2017YFC0209900] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000579365600113 |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/104639]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Qin, Min; Fang, Wu |
| 作者单位 | 1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230027, Peoples R China 3.Chinese Acad Sci, CAS Ctr Excellence Urban Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 4.Anhui Inst Meteorol Sci, Anhui Prov Key Lab Atmospher Sci & Satellite Remo, Hefei 230031, Peoples R China 5.Shouxian Natl Climatol Observ, Huaihe River Basin Typ Farm Ecometeorol Expt Fiel, Shouxian 232200, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Ke,Qin, Min,Fang, Wu,et al. An automated dynamic chamber system for exchange flux measurement of reactive nitrogen oxides (HONO and NOx) in farmland ecosystems of the Huaihe River Basin, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,745. |
| APA | Tang, Ke.,Qin, Min.,Fang, Wu.,Duan, Jun.,Meng, Fanhao.,...&Ni, Ting.(2020).An automated dynamic chamber system for exchange flux measurement of reactive nitrogen oxides (HONO and NOx) in farmland ecosystems of the Huaihe River Basin, China.SCIENCE OF THE TOTAL ENVIRONMENT,745. |
| MLA | Tang, Ke,et al."An automated dynamic chamber system for exchange flux measurement of reactive nitrogen oxides (HONO and NOx) in farmland ecosystems of the Huaihe River Basin, China".SCIENCE OF THE TOTAL ENVIRONMENT 745(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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