The response of sap flow in desert shrubs to environmental variables in an arid region of China
文献类型：期刊论文
| 作者 | Liu, Bing; Zhao, Wenzhi; Jin, Bowen |
| 刊名 | ECOHYDROLOGY
 |
| 出版日期 | 2011-05-01 |
| 卷号 | 4期号:3页码:448-457 |
| ISSN号 | 1936-0584 |
| 关键词 | desert shrubs sap velocity environmental variables redundancy analysis |
| DOI | 10.1002/eco.151 |
| 通讯作者 | Zhao, Wenzhi(zhaowzh@lzb.ac.cn) |
| 英文摘要 | A case study was conducted in a desert-oasis ecotone in the middle of China's Heihe River basin to reveal the response of sap velocity to environmental variables. We measured sap flow in the branches and stems of desert shrubs (Nitraria sphaerocarpa and Elaeagnus angustifolia) using sap-flow gauges, and simultaneously measured environmental variables at the study site. The relationships between sap velocity and the environmental variables were analysed using redundancy analysis. The diurnal variation in sap velocity was best described by a bimodal curve, except for the branches of N. sphaerocarpa, which followed a unimodal curve. Sap flow began about 1 h earlier in the branches than in the stems. The dynamic variations in sap velocity were remarkably similar for the two species at a given position (stem vs branch) but differed between the two positions for each species. Redundancy analysis and Kendall's tau analysis indicated that precipitation had the greatest influence on sap velocity in the stem, whereas precipitation duration significantly affected sap velocity in the branches of the desert shrubs (R(2) = 0.85 and 0.73, respectively). The variation in sap velocity could be described by a multiple linear regression against the meteorological variables, and the simulated value was significantly linearly correlated with the measured value (0.861 <= R(2) <= 0.938, P < 0.0001). Copyright (C) 2010 John Wiley & Sons, Ltd. |
| 收录类别 | SCI |
| WOS关键词 | HEAT-BALANCE METHOD ; TROPICAL FOREST ; WATER-USE ; CANOPY CONDUCTANCE ; STOMATAL CONDUCTANCE ; NORTHWEST CHINA ; RAIN-FOREST ; SOIL-WATER ; TRANSPIRATION ; TREE |
| WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
| WOS类目 | Ecology ; Environmental Sciences ; Water Resources |
| 语种 | 英语 |
| 出版者 | WILEY-BLACKWELL |
| WOS记录号 | WOS:000291524400009 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556507 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhao, Wenzhi |
| 作者单位 | Chinese Acad Sci, Key Lab Inland River Ecohydrol Cold & Arid Reg, Linze Inland River Basin Res Stn, Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Bing,Zhao, Wenzhi,Jin, Bowen. The response of sap flow in desert shrubs to environmental variables in an arid region of China[J]. ECOHYDROLOGY,2011,4(3):448-457. |
| APA | Liu, Bing,Zhao, Wenzhi,&Jin, Bowen.(2011).The response of sap flow in desert shrubs to environmental variables in an arid region of China.ECOHYDROLOGY,4(3),448-457. |
| MLA | Liu, Bing,et al."The response of sap flow in desert shrubs to environmental variables in an arid region of China".ECOHYDROLOGY 4.3(2011):448-457. |
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来源：寒区旱区环境与工程研究所
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