Chin J Plant Ecol ›› 2006, Vol. 30 ›› Issue (1): 47-56.DOI: 10.17521/cjpe.2006.0007
Special Issue: 稳定同位素生态学
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CHEN Lan1,2, ZHANG Shou-Ren1,*()
Received:
2004-12-23
Accepted:
2005-08-17
Online:
2006-12-23
Published:
2006-01-30
Contact:
ZHANG Shou-Ren
CHEN Lan, ZHANG Shou-Ren. EFFECTS OF ENHANCED UV-B RADIATION ON WATER USE EFFICIENCY, STOMATAL CONDUCTANCE, LEAF NITROGEN CONTENT AND MORPHOLOGICAL CHARACTERISTICS OF SPIRAEA PUBESCENS IN A WARM-TEMPERATE DECIDUOUS BROAD-LEAF FOREST[J]. Chin J Plant Ecol, 2006, 30(1): 47-56.
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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2006.0007
时间 Time | 2002 | 2003 | 2004 | ||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
6月 Jun. | 7月 Jul. | 8月 Aug. | 9月 Sept. | 6月 Jun. | 7月 Jul. | 8月 Aug. | 9月 Sept. | 6月 Jun. | 7月 Jul. | 8月 Aug. | 9月 Sept. | ||||||||||||||
月降雨量 Monthly precipitation (MP) (mm) | 118.1 | 125.0 | 60.4 | 90.5 | 78.6 | 87.2 | 61.3 | 82.7 | 78.1 | 227.2 | 95.8 | 57.4 | |||||||||||||
大气相对湿度 Relative humidity (RH) (%) | 79 | 84 | 89 | 85 | 78 | 86 | 86 | 86 | 77 | 87 | 90 | 82 | |||||||||||||
月平均温度 Monthly mean temperature (MT) (℃) | 16.1 | 19.0 | 17.6 | 11.8 | 15.5 | 17.6 | 16.5 | 13.0 | 16.4 | 17.6 | 15.9 | 12.1 | |||||||||||||
叶片空气水气压亏缺 Leaf-to-air | UV-B | - | - | - | - | - | - | - | - | 8.65 | 7.24 | 6.06 | 6.06 | ||||||||||||
vapour pressure deficit (VPD) (hPa) | 对照 Control | - | - | - | - | - | - | - | - | 8.67 | 7.12 | 6.07 | 6.26 | ||||||||||||
空气CO2浓度 Air CO2 concentration (Ca) (μmol·mol-1) | - | - | 370.4 | ||||||||||||||||||||||
空气CO2的碳同位素比率 Carbon isotope ratio (δ13C ) (‰) | - | - | -10.34 |
Table 1 Environmental factors of the experimental site in recent three years
时间 Time | 2002 | 2003 | 2004 | ||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
6月 Jun. | 7月 Jul. | 8月 Aug. | 9月 Sept. | 6月 Jun. | 7月 Jul. | 8月 Aug. | 9月 Sept. | 6月 Jun. | 7月 Jul. | 8月 Aug. | 9月 Sept. | ||||||||||||||
月降雨量 Monthly precipitation (MP) (mm) | 118.1 | 125.0 | 60.4 | 90.5 | 78.6 | 87.2 | 61.3 | 82.7 | 78.1 | 227.2 | 95.8 | 57.4 | |||||||||||||
大气相对湿度 Relative humidity (RH) (%) | 79 | 84 | 89 | 85 | 78 | 86 | 86 | 86 | 77 | 87 | 90 | 82 | |||||||||||||
月平均温度 Monthly mean temperature (MT) (℃) | 16.1 | 19.0 | 17.6 | 11.8 | 15.5 | 17.6 | 16.5 | 13.0 | 16.4 | 17.6 | 15.9 | 12.1 | |||||||||||||
叶片空气水气压亏缺 Leaf-to-air | UV-B | - | - | - | - | - | - | - | - | 8.65 | 7.24 | 6.06 | 6.06 | ||||||||||||
vapour pressure deficit (VPD) (hPa) | 对照 Control | - | - | - | - | - | - | - | - | 8.67 | 7.12 | 6.07 | 6.26 | ||||||||||||
空气CO2浓度 Air CO2 concentration (Ca) (μmol·mol-1) | - | - | 370.4 | ||||||||||||||||||||||
空气CO2的碳同位素比率 Carbon isotope ratio (δ13C ) (‰) | - | - | -10.34 |
变异来源 Variation | df | 气孔导度 Stomatal conductance | δ13C值 Carbon isotope ratio | 水分利用 效率 WUE | 叶含水量 Leaf water content | 胞间CO2浓 度与大气CO2 浓度之比 Ci/Ca | 叶面积 Leaf area | 比叶重 SLW | 全氮含量 Total N content | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
F | p | F | p | F | p | F | p | F | p | F | p | F | p | F | p | |||||
主效应 Main effects | ||||||||||||||||||||
UV-B | 1 | 2.105 | ns | 0.699 | ns | 1.165 | ns | 4.034 | ns | 0.936 | ns | 23.601 | *** | 3.283 | ns | 15.766 | ** | |||
时间 Time | 3 | 5.81 | * | 4.073 | * | 24.457 | *** | 3.58 | * | 4.014 | * | 0.291 | ns | 2.726 | ns | 1.257 | ns | |||
二元交互 Two-factor interaction effects | ||||||||||||||||||||
UV-B×时间 UV-B×Time | 3 | 0.658 | ns | 1.179 | ns | 1.164 | ns | 0.228 | ns | 0.927 | ns | 0.096 | ns | 0.296 | ns | 1.764 | ns |
Table 2 Effects of UV-B, time and their interactions on stomatal conductance, δ13C, leaf water content, water use efficiency (WUE), intercellular CO2 concentration/air CO2 concentration/air CO2 concentration (Ci/Ca), leaf area, specific leaf weight (SLW) and total N content
变异来源 Variation | df | 气孔导度 Stomatal conductance | δ13C值 Carbon isotope ratio | 水分利用 效率 WUE | 叶含水量 Leaf water content | 胞间CO2浓 度与大气CO2 浓度之比 Ci/Ca | 叶面积 Leaf area | 比叶重 SLW | 全氮含量 Total N content | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
F | p | F | p | F | p | F | p | F | p | F | p | F | p | F | p | |||||
主效应 Main effects | ||||||||||||||||||||
UV-B | 1 | 2.105 | ns | 0.699 | ns | 1.165 | ns | 4.034 | ns | 0.936 | ns | 23.601 | *** | 3.283 | ns | 15.766 | ** | |||
时间 Time | 3 | 5.81 | * | 4.073 | * | 24.457 | *** | 3.58 | * | 4.014 | * | 0.291 | ns | 2.726 | ns | 1.257 | ns | |||
二元交互 Two-factor interaction effects | ||||||||||||||||||||
UV-B×时间 UV-B×Time | 3 | 0.658 | ns | 1.179 | ns | 1.164 | ns | 0.228 | ns | 0.927 | ns | 0.096 | ns | 0.296 | ns | 1.764 | ns |
水分利用效率 WUE | 叶含水量 Leaf water content | δ13C值 Carbon isotope ratio | 胞间CO2浓度与 大气CO2浓度 之比Ci/Ca | 气孔导度 Stomatal conductance | ||
---|---|---|---|---|---|---|
UV-B | Pearson correlation | 0.623* | -0.467 | -0.078 | 0.073 | 0.275 |
Sig. (2-tailed) | 0.03 | 0.126 | 0.81 | 0.822 | 0.475 | |
n | 12 | 12 | 12 | 12 | 9 | |
对照 | Pearson correlation | 0.604 | -0.731* | -0.608 | 0.540 | 0.711 |
Control | Sig. (2-tailed) | 0.113 | 0.04 | 0.11 | 0.168 | 0.114 |
n | 8 | 8 | 8 | 8 | 6 |
Table 3 Correlation coefficients between soil water content and water use efficiency (WUE), leaf water content, δ13C, intercellular CO2 concentration/air CO2 concentration (Ci/Ca), stomatal conductance
水分利用效率 WUE | 叶含水量 Leaf water content | δ13C值 Carbon isotope ratio | 胞间CO2浓度与 大气CO2浓度 之比Ci/Ca | 气孔导度 Stomatal conductance | ||
---|---|---|---|---|---|---|
UV-B | Pearson correlation | 0.623* | -0.467 | -0.078 | 0.073 | 0.275 |
Sig. (2-tailed) | 0.03 | 0.126 | 0.81 | 0.822 | 0.475 | |
n | 12 | 12 | 12 | 12 | 9 | |
对照 | Pearson correlation | 0.604 | -0.731* | -0.608 | 0.540 | 0.711 |
Control | Sig. (2-tailed) | 0.113 | 0.04 | 0.11 | 0.168 | 0.114 |
n | 8 | 8 | 8 | 8 | 6 |
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