Coordination of stomatal control and stem water storage on plant water use in desert riparian trees
文献类型：期刊论文
| 作者 | Yu, Tengfei1,2,4; Feng, Qi1,2; Si, Jianhua1,2; Pinkard, Elizabeth A.3 |
| 刊名 | TREES-STRUCTURE AND FUNCTION
 |
| 出版日期 | 2019-06-01 |
| 卷号 | 33期号:3页码:787-801 |
| 关键词 | Stem water storage Stomatal control Stem diameter variations Sap flow Riparian forest Populus |
| ISSN号 | 0931-1890 |
| DOI | 10.1007/s00468-019-01816-7 |
| 通讯作者 | Yu, Tengfei(yutf@lzb.ac.cn) |
| 英文摘要 | Populus euphratica Oliv. is a relatively conservative' water user even when growing in favourable water conditions, but the mechanistic understanding of this has received little attention. We undertook an experiment to determine trees water use by measuring stem and root sap flow (F-s), variation in stem diameter (D-s), leaf stomatal gas-exchange (e.g. conductance, g(s) and transpiration, T-r) and water potential mml:mfenced close=) open=(Lmml:mfenced during the growing season for P. euphratica. There was a hysteretic apparent feedforward' of stomatal response to increasing VPD. Mean of g(s) was not significantly different among months. L was negatively related to g(s) and T-r, but in contrast, stem F-s was positively associated to T-r but not to g(s). There was no lag in the daily onset and cessation of F-s between the bottom and top of the trunk, possibly due to the short distance between measurement points (about 2m), however, the lag time in F-s between the bottom of the trunk and roots, approximately 30min, suggested that stored water was withdrawn first from the trunk and subsequently the roots. Daily contraction of D-s (-D-s) increased with increasing F-s during both day and night, and expansion of D-s (+D-s) showed a logarithmic rise to a maximum with increasing F-s during the day. Day F-s and -D-s were also logarithmic with respect to VPD, with a correlation coefficient equal to 0.51 and 0.50, respectively (P<0.001). This suggests that water use of P. euphratica was determined by the stomatal control and stem water storage together, which has great significance for the species buffers xylem water deficit, maintaining high leaf production, and water use efficiency. |
| 收录类别 | SCI |
| WOS关键词 | SAP FLOW MEASUREMENTS ; EXTREME ARID REGION ; POPULUS-EUPHRATICA ; TRANSPORT-PROPERTIES ; TEMPORAL DYNAMICS ; GROUNDWATER DEPTH ; DIURNAL PATTERNS ; GAS-EXCHANGE ; DRY SEASON ; TRANSPIRATION |
| WOS研究方向 | Forestry |
| WOS类目 | Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:000469005900013 |
| 出版者 | SPRINGER HEIDELBERG |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555426 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Yu, Tengfei |
| 作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Alxa Desert Ecohydrol Expt Res Stn, Lanzhou 730000, Gansu, Peoples R China 2.Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Gansu, Peoples R China 3.CSIRO Land & Water, Hobart, Tas 7005, Australia 4.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, 320 Donggang West Rd, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Tengfei,Feng, Qi,Si, Jianhua,et al. Coordination of stomatal control and stem water storage on plant water use in desert riparian trees[J]. TREES-STRUCTURE AND FUNCTION,2019,33(3):787-801. |
| APA | Yu, Tengfei,Feng, Qi,Si, Jianhua,&Pinkard, Elizabeth A..(2019).Coordination of stomatal control and stem water storage on plant water use in desert riparian trees.TREES-STRUCTURE AND FUNCTION,33(3),787-801. |
| MLA | Yu, Tengfei,et al."Coordination of stomatal control and stem water storage on plant water use in desert riparian trees".TREES-STRUCTURE AND FUNCTION 33.3(2019):787-801. |
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来源：寒区旱区环境与工程研究所
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