Energy and CO2 exchanges and influencing factors in spring wheat ecosystem along the Heihe River, northwestern China
文献类型：期刊论文
| 作者 | Sun, Shuchen1,2,3; Shao, Ming'an2,3,4; Gao, Hongbei5 |
| 刊名 | JOURNAL OF EARTH SYSTEM SCIENCE
 |
| 出版日期 | 2016-12-01 |
| 卷号 | 125期号:8页码:1667-1679 |
| 关键词 | Eddy covariance energy and CO2 fluxes desert-oasis ecotone spring wheat |
| ISSN号 | 0253-4126 |
| DOI | 10.1007/s12040-016-0750-6 |
| 通讯作者 | Shao, Ming'an(mashao@ms.iswc.ac.cn) |
| 英文摘要 | Spring wheat (Triticum aestivum Linn.) is an important crop for food security in the desert-oasis farmland in the middle reaches of the Heihe River in northwestern China. We measured fluxes using eddy covariance and meteorological parameters to explore the energy fluxes and the relationship between CO2 flux and climate change in this region during the wheat growing seasons in 2013 and 2014. The energy balance closures were 70.5% and 72.7% in the 2013 and 2014 growing season, respectively. The wheat ecosystem had distinct seasonal and diurnal dynamics of CO2 fluxes with U-shaped curves. The accumulated net ecosystemic CO2 exchanges (NEE) were -111.6 and -142.2 g C/m(2) in 2013 and 2014 growing season, respectively. The ecosystem generally acted as a CO2 sink during the growing season but became a CO2 source after the wheat harvest. A correlation analysis indicated that night-time CO2 fluxes were exponentially dependent on air temperature and soil temperature at a depth of 5 cm but were not correlated with soil-water content, water-vapour pressure, or vapour-pressure deficit. CO2 flux was not correlated with the meteorological parameters during daytime. However, irrigation and precipitation, may complicate the response of CO2 fluxes to other meteorological parameters. |
| WOS关键词 | CARBON-DIOXIDE FLUXES ; TEMPERATE DECIDUOUS FOREST ; WINTER-WHEAT ; SOIL RESPIRATION ; BALANCE CLOSURE ; HEAT FLUXES ; WATER ; CLIMATE ; GRASSLAND ; RESPONSES |
| 资助项目 | National Natural Science Foundation of China[91025018] |
| WOS研究方向 | Geology ; Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000390038600012 |
| 出版者 | INDIAN ACAD SCIENCES |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/65247]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Shao, Ming'an |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100049, Peoples R China 5.Shaanxi Prov Land Engn Construct Grp Co Ltd, Xian 710075, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Shuchen,Shao, Ming'an,Gao, Hongbei. Energy and CO2 exchanges and influencing factors in spring wheat ecosystem along the Heihe River, northwestern China[J]. JOURNAL OF EARTH SYSTEM SCIENCE,2016,125(8):1667-1679. |
| APA | Sun, Shuchen,Shao, Ming'an,&Gao, Hongbei.(2016).Energy and CO2 exchanges and influencing factors in spring wheat ecosystem along the Heihe River, northwestern China.JOURNAL OF EARTH SYSTEM SCIENCE,125(8),1667-1679. |
| MLA | Sun, Shuchen,et al."Energy and CO2 exchanges and influencing factors in spring wheat ecosystem along the Heihe River, northwestern China".JOURNAL OF EARTH SYSTEM SCIENCE 125.8(2016):1667-1679. |
入库方式： OAI收割
来源：地理科学与资源研究所
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