| Nighttime sap flow and its driving forces for Populus euphratica in a desert riparian forest, Northwest China | |
| Si Jianhua1,2; Feng Qi1,2; Yu Tengfei1,2; Zhao Chunyan1 | |
| 刊名 | JOURNAL OF ARID LAND
 |
| 2015-10-01 | |
| 卷号 | 7期号:5页码:665-674 |
| 关键词 | nighttime sap flow stomatal conductance vapor pressure deficit driving factors desert riparian forest |
| ISSN号 | 1674-6767 |
| DOI | 10.1007/s40333-015-0009-0 |
| 通讯作者 | Si Jianhua(jianhuas@lzb.ac.cn) |
| 英文摘要 | Nighttime sap flow is a potentially important factor that affects whole-plant water balance and water-use efficiency (WUE). Its functions include predawn disequilibrium between plant and soil water potentials as well as between the increments of oxygen supply and nutrient uptake. However, main factors that drive nighttime sap flow remain unclear, and researches related to the relationship between nighttime sap flow velocity and environmental factors are limited. Accordingly, we investigated the variations in the nighttime sap flow of Populus euphratica in a desert riparian forest of an extremely arid region, Northwest China. Results indicated that P. euphratica sap flow occurred throughout the night during the growing season because of the partial stomata opening. Nighttime sap flow for the P. euphratica forest accounted for 31%-47% of its daily sap flow during the growing season. The high value of nighttime sap flow could be the result of high stomatal conductance and could have significant implications for water budgets. Throughout the whole growing season, nighttime sap flow velocity of P. euphratica was positively correlated with the vapor pressure deficit (VPD), air temperature and soil water content. We found that VPD and soil water content were the main driving factors for nighttime sap flow of P. euphratica. |
| 收录类别 | SCI |
| WOS关键词 | NOCTURNAL STOMATAL CONDUCTANCE ; SOIL-WATER POTENTIALS ; PREDAWN PLANT ; WOODY-PLANTS ; TRANSPIRATION ; DISEQUILIBRIUM ; RESPONSES ; SHRUBS ; TREES ; LEAF |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| 出版者 | SPRINGER HEIDELBERG |
| WOS记录号 | WOS:000357500800010 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2557074 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Si Jianhua |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Alxa Desert Ecohydrol Expt Res Stn, Lanzhou 730000, Peoples R China 2.Gansu Hydrol & Water Resources Engn Ctr, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Si Jianhua,Feng Qi,Yu Tengfei,et al. Nighttime sap flow and its driving forces for Populus euphratica in a desert riparian forest, Northwest China[J]. JOURNAL OF ARID LAND,2015,7(5):665-674. |
| APA | Si Jianhua,Feng Qi,Yu Tengfei,&Zhao Chunyan.(2015).Nighttime sap flow and its driving forces for Populus euphratica in a desert riparian forest, Northwest China.JOURNAL OF ARID LAND,7(5),665-674. |
| MLA | Si Jianhua,et al."Nighttime sap flow and its driving forces for Populus euphratica in a desert riparian forest, Northwest China".JOURNAL OF ARID LAND 7.5(2015):665-674. |
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