Energy exchange and evapotranspiration over irrigated seed maize agroecosystems in a desert-oasis region, northwest China
文献类型：期刊论文
| 作者 | Zhang, Yongyong1; Zhao, Wenzhi1; He, Jianhua2; Zhang, Kun2 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2016-06-15 |
| 卷号 | 223页码:48-59 |
| 关键词 | Eddy covariance Water vapor and energy exchange Evapotranspiration Seed maize Desert-oasis region |
| ISSN号 | 0168-1923 |
| DOI | 10.1016/j.agrformet.2016.04.002 |
| 通讯作者 | Zhang, Yongyong(zhangxyz23@126.com) |
| 英文摘要 | Investigating the dynamics of energy and water vapor exchange in oasis agroecosystems is important to improve scientific understanding of land surface processes in desert-oasis regions. In this study, water vapor and energy fluxes were obtained by using an eddy covariance technique for two similar irrigated seed maize fields at Yingke and Pingchuan, in northwest China. Seasonal variabilities of evapotranspiration (ET) and relevant environmental and biophysical factors were explored. Results showed that the energy balance closures were reasonable, with energy balance ratio of 0.99 and 0.79 for a half-hourly time scale at Yingke and Pingchuan, respectively. The seasonal changes in net radiation (RQ), latent heat flux (LE), and sensible heat flux (H) of Yingke and Pingchuan were similar. Net radiation was 11.27 MJ m(-1) day(-1) during the growing season. Latent heat flux accounted for 67.5% of net radiation, sensible heat flux was 25.0%, and soil heat flux was 7.5%. A reverse" seasonal change was found in partitioning energy flux into LE and H. The seasonal variation in energy flux partitioning was significantly related to the phenology of maize. During the growing season, ET was 467 and 545 mm, and mean daily ET 2.84 and 3.35 mm day(-1) at Pingchuan and Yingke, respectively. "Non-growing" season ET was 15% of the annual ET in the bare field (during October-March) and 85% of the annual ET for maize (during April-September). Daily ET was mainly controlled by net radiation and air temperature, and was significantly affected by leaf area index (<3.0 m(2) m(-2)) and canopy conductance (<10 mm s(-1)). Furthermore, irrigation promoted daily ET greatly during the growing season. Accurate estimation of seed maize ET and determination the controlling factors helps to develop exact irrigation scheduling and improve water resource use in desert-oasis agroecosystems. (C) 2016 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | WATER-VAPOR EXCHANGE ; CARBON-DIOXIDE ; CROP COEFFICIENT ; INTERANNUAL VARIATIONS ; CANOPY CONDUCTANCE ; EDDY COVARIANCE ; BALANCE CLOSURE ; INNER-MONGOLIA ; USE EFFICIENCY ; SPRUCE FOREST |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| WOS类目 | Agronomy ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000376835000005 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557257 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhang, Yongyong |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Ecohydrol Inland River Basin, Linze Inland River Basin Res Stn, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yongyong,Zhao, Wenzhi,He, Jianhua,et al. Energy exchange and evapotranspiration over irrigated seed maize agroecosystems in a desert-oasis region, northwest China[J]. AGRICULTURAL AND FOREST METEOROLOGY,2016,223:48-59. |
| APA | Zhang, Yongyong,Zhao, Wenzhi,He, Jianhua,&Zhang, Kun.(2016).Energy exchange and evapotranspiration over irrigated seed maize agroecosystems in a desert-oasis region, northwest China.AGRICULTURAL AND FOREST METEOROLOGY,223,48-59. |
| MLA | Zhang, Yongyong,et al."Energy exchange and evapotranspiration over irrigated seed maize agroecosystems in a desert-oasis region, northwest China".AGRICULTURAL AND FOREST METEOROLOGY 223(2016):48-59. |
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来源：寒区旱区环境与工程研究所
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