Transpiration from three dominant shrub species in a desert-oasis ecotone of arid regions of Northwestern China
文献类型：期刊论文
| 作者 | Ji, Xibin1,2; Zhao, Wenzhi1,2; Kang, Ersi2; Jin, Bowen1,2; Xu, Shiqin1,2 |
| 刊名 | HYDROLOGICAL PROCESSES
 |
| 出版日期 | 2016-12-15 |
| 卷号 | 30期号:25页码:4841-4854 |
| ISSN号 | 0885-6087 |
| 关键词 | sap flow phreatophyte shrub water use ecohydrology arid climate |
| DOI | 10.1002/hyp.10937 |
| 通讯作者 | Ji, Xibin(xuanzhij@ns.lzb.ac.cn) |
| 英文摘要 | Conservation management for the water dependent desert-oasis ecotone in arid northwest China requires information on the water use of the dominant species. However, no studies have quantified their combined water use or linked species composition to ecotone transpiration. Here, the water use of three dominant shelterbelt shrubs (Haloxylon ammodendron, Nitraria tangutorum, and Calligonum mongolicum) within an ecotone was measured throughout the full leaf-out period for three shrub species from 30 May to 16 October 2014, with sap flow gauges using the stem heat balance approach. Species-specific transpiration was estimated by scaling up sap flow velocities measured in individual stems, to stand area level, using the frequency distribution of stem diameter and assuming a constant proportionality between sap flow velocity and basal crosssectional area for all stems. The mean peak sap flux densities (J(sn)) for H. ammodendron, N. tangutorum, and C. mongolicum, were 40.12 g cm(-2) h(-1), 71.33 g cm(-2) h(-1), and 60.34 g cm(-2) h(-1), respectively, and the mean estimated daily area-averaged transpiration rates (T-daily) for the same species were 0.56 mm day(-1), 0.34 mm day(-1), and 0.11 mm day(-1). The accumulative stand transpiration was approximately 140.8mm throughout the measurement period, exceeding precipitation by as much as 42.1 mm. Furthermore, T-daily of these shrubs appeared to be much less sensitive to soil moisture as compared to atmospheric drivers, and the relationship between J(sn) and atmospheric drivers was likely uninfluenced by soil moisture regimes in the whole profile (to 1-m depth), especially for H. ammodendron and C. mongolicum. Results indicate that these shrubs may use deep soil water recharged by capillary rise, or may directly access shallow groundwater. This study provides quantitative data offering important implications for ecotone conservation and water and land resource management. Copyright (C) 2016 John Wiley & Sons, Ltd. |
| 收录类别 | SCI |
| WOS关键词 | SAP FLOW MEASUREMENTS ; VAPOR-PRESSURE DEFICIT ; HEAT PULSE VELOCITY ; LEAF-AREA INDEX ; TREE WATER-USE ; STAND TRANSPIRATION ; FOREST STANDS ; FLUX-DENSITY ; SAPFLOW MEASUREMENTS ; THERMAL DISSIPATION |
| WOS研究方向 | Water Resources |
| WOS类目 | Water Resources |
| 语种 | 英语 |
| 出版者 | WILEY-BLACKWELL |
| WOS记录号 | WOS:000393030500012 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557619 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Ji, Xibin |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Linze Inland River Basin Res Stn, 320 Donggang West Rd, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ji, Xibin,Zhao, Wenzhi,Kang, Ersi,et al. Transpiration from three dominant shrub species in a desert-oasis ecotone of arid regions of Northwestern China[J]. HYDROLOGICAL PROCESSES,2016,30(25):4841-4854. |
| APA | Ji, Xibin,Zhao, Wenzhi,Kang, Ersi,Jin, Bowen,&Xu, Shiqin.(2016).Transpiration from three dominant shrub species in a desert-oasis ecotone of arid regions of Northwestern China.HYDROLOGICAL PROCESSES,30(25),4841-4854. |
| MLA | Ji, Xibin,et al."Transpiration from three dominant shrub species in a desert-oasis ecotone of arid regions of Northwestern China".HYDROLOGICAL PROCESSES 30.25(2016):4841-4854. |
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来源：寒区旱区环境与工程研究所
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