Hysteresis loops between canopy conductance of grapevines and meteorological variables in an oasis ecosystem
文献类型：期刊论文
| 作者 | Bai, Yan1; Zhu, Gaofeng1; Su, Yonghong2; Zhang, Kun1; Han, Tuo1; Ma, Jinzhu1; Wang, Weizhen2; Ma, Ting1; Feng, Lili1 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2015-12-15 |
| 卷号 | 214页码:319-327 |
| 关键词 | Sap flow Canopy transpiration Canopy conductance Diurnal courses Hysteresis loops Grapevines |
| ISSN号 | 0168-1923 |
| DOI | 10.1016/j.agrformet.2015.08.267 |
| 通讯作者 | Zhu, Gaofeng(zhugf@lzu.edu.cn) |
| 英文摘要 | Canopy conductance (g(c)) is a key parameter that determines plant transpiration rate, and it is sensitive to multiple environmental variables. The relationships between g(c), and micrometeorological variables still need to be investigated across a wide range of biomes and climatic conditions. In this study, sap flow, micrometeorological and biological factors for a vineyard at an oasis in Northwest China were measured from July to September in 2013 and 2014. Values of g(c) were calculated from the simplified Penman-Monteith equation, and diurnal patterns of g(c) were investigated in two study years. The relationships between gc and main micrometeorological variables (global radiation R, vapor pressure deficit D, air temperature T) during the day exhibited hysteresis loops. By dividing daytime into three time periods, it was found that in the first period (7:00-11:00), stomatal opened quickly as R, D and T increase, so gc increased positively to increasing R, D and T. In the second period (11:00-17:00), followed by stomatal closure, gc decreased negatively to increasing R, D and T. In the third period (17:00-21:00), as stomatal aperture kept decreasing until sunset, gc decreased positively to decreasing R, D and T. A simple linear model was used to simulate variations in g(c) for the first period and the third period, and a negative logarithmic model was used for the second period. These models were consistent in predicting daytime variations in gc. The results are useful in improving our current understanding of relationships between plant physiological and environmental processes in the oasis ecosystem. (C) 2015 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | VAPOR-PRESSURE DEFICIT ; LEAF-AREA INDEX ; STOMATAL CONDUCTANCE ; SAP-FLOW ; WATER-BALANCE ; NORTHWESTERN CHINA ; TRANSPIRATION ; FOREST ; TREES ; FLUX |
| 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:000364730000029 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557203 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhu, Gaofeng |
| 作者单位 | 1.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Yan,Zhu, Gaofeng,Su, Yonghong,et al. Hysteresis loops between canopy conductance of grapevines and meteorological variables in an oasis ecosystem[J]. AGRICULTURAL AND FOREST METEOROLOGY,2015,214:319-327. |
| APA | Bai, Yan.,Zhu, Gaofeng.,Su, Yonghong.,Zhang, Kun.,Han, Tuo.,...&Feng, Lili.(2015).Hysteresis loops between canopy conductance of grapevines and meteorological variables in an oasis ecosystem.AGRICULTURAL AND FOREST METEOROLOGY,214,319-327. |
| MLA | Bai, Yan,et al."Hysteresis loops between canopy conductance of grapevines and meteorological variables in an oasis ecosystem".AGRICULTURAL AND FOREST METEOROLOGY 214(2015):319-327. |
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来源：寒区旱区环境与工程研究所
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