Chin J Plant Ecol ›› 2009, Vol. 33 ›› Issue (6): 1125-1131.DOI: 10.3773/j.issn.1005-264x.2009.06.012
• Original article • Previous Articles Next Articles
HAO Xing-Ming1,2, CHEN Ya-Ning1,2,*(), LI Wei-Hong1,2, Guo Bin1,2, ZHAO Rui-Feng1,2
Received:
2008-11-21
Accepted:
2009-04-09
Online:
2009-11-21
Published:
2021-04-29
Contact:
CHEN Ya-Ning
HAO Xing-Ming, CHEN Ya-Ning, LI Wei-Hong, Guo Bin, ZHAO Rui-Feng. EVIDENCE AND ECOLOGICAL EFFECTS OF HYDRAULIC LIFT IN POPULUS EUPHRATICA[J]. Chin J Plant Ecol, 2009, 33(6): 1125-1131.
Fig. 1 Sap flow velocity (Vh) in the tap root of Populus euphraticaduring 10 Sept. to 22 Sept. a, b and c respresent the diurnal and nocturnal variation of three trees in four days, respectively
Fig. 2 Sap flow velocity (Vh) in the lateral root of Populus euphraticaduring 10 Sept. to 22 Sept. a, b and c respresent the diurnal and nocturnal variation of three trees in four days, respectively. Data O, S, a, y is the address of sensors that were installed in the lateral roots of the tree
Fig. 3 Average soil water content in six soil depth of three soil profile (n=48) The soil water content was monitored during four days in every soil profile
Fig. 4 The average soil water content at different time and soil depth of three soil profile (n=12) The soil water content was monitored during four days in every soil profile
风速 Wind speed (m·s-1) | 相对湿度 Air relative Humidity (%) | 叶面温度 Leaf temperature (℃) | 地表温度 Surface temperature (℃) | 水汽压亏缺Vapor pressure deficit (kPa) | ||
---|---|---|---|---|---|---|
主根 Tap root | 相关系数 | 0.462** | -0.614** | 0.624** | 0.655** | 0.610** |
Pearson correlation | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | |
n | 288 | 288 | 288 | 288 | 288 | |
侧根 Lateral root(O) | 相关系数 | 0.112 | -0.648** | 0.653** | 0.646** | 0.692** |
Pearson correlation | 0.057 | 0.000 | 0.000 | 0.000 | 0.000 | |
n | 288 | 288 | 288 | 288 | 288 | |
侧根 Lateral root (S) | 相关系数 | 0.559** | -0.643** | 0.635** | 0.606** | 0.679** |
Pearson correlation | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | |
n | 288 | 288 | 288 | 288 | 288 | |
侧根 Lateral root (a) | 相关系数 | 0.028 | -0.553** | 0.619** | 0.637** | 0.680** |
Pearson correlation | 0.636 | 0.000 | 0.000 | 0.000 | 0.000 | |
n | 287 | 287 | 287 | 287 | 288 | |
侧根 Lateral root (y) | 相关系数 | 0.234** | -0.477** | 0.456** | 0.442** | 0.481** |
Pearson correlation | 0 | 0 | 0 | 0 | 0.000 | |
n | 288 | 288 | 288 | 288 | 288 |
Table 1 Correlation analysis between root sap velocity of Populus euphraticaand meteorological factors
风速 Wind speed (m·s-1) | 相对湿度 Air relative Humidity (%) | 叶面温度 Leaf temperature (℃) | 地表温度 Surface temperature (℃) | 水汽压亏缺Vapor pressure deficit (kPa) | ||
---|---|---|---|---|---|---|
主根 Tap root | 相关系数 | 0.462** | -0.614** | 0.624** | 0.655** | 0.610** |
Pearson correlation | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | |
n | 288 | 288 | 288 | 288 | 288 | |
侧根 Lateral root(O) | 相关系数 | 0.112 | -0.648** | 0.653** | 0.646** | 0.692** |
Pearson correlation | 0.057 | 0.000 | 0.000 | 0.000 | 0.000 | |
n | 288 | 288 | 288 | 288 | 288 | |
侧根 Lateral root (S) | 相关系数 | 0.559** | -0.643** | 0.635** | 0.606** | 0.679** |
Pearson correlation | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | |
n | 288 | 288 | 288 | 288 | 288 | |
侧根 Lateral root (a) | 相关系数 | 0.028 | -0.553** | 0.619** | 0.637** | 0.680** |
Pearson correlation | 0.636 | 0.000 | 0.000 | 0.000 | 0.000 | |
n | 287 | 287 | 287 | 287 | 288 | |
侧根 Lateral root (y) | 相关系数 | 0.234** | -0.477** | 0.456** | 0.442** | 0.481** |
Pearson correlation | 0 | 0 | 0 | 0 | 0.000 | |
n | 288 | 288 | 288 | 288 | 288 |
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