Chin J Plant Ecol ›› 2006, Vol. 30 ›› Issue (1): 57-63.DOI: 10.17521/cjpe.2006.0008
Special Issue: 稳定同位素生态学
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SUN Shuang-Feng1,2, HUANG Jian-Hui1,*(), LIN Guang-Hui1, HAN Xing-Guo1
Received:
2005-03-28
Accepted:
2005-09-29
Online:
2006-03-28
Published:
2006-01-30
Contact:
HUANG Jian-Hui
SUN Shuang-Feng, HUANG Jian-Hui, LIN Guang-Hui, HAN Xing-Guo. CONTRASTING WATER USE STRATEGY OF CO-OCCURRING PINUS-QUERCUS TREES IN THREE GORGES RESERVOIR[J]. Chin J Plant Ecol, 2006, 30(1): 57-63.
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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2006.0008
Fig.1 Photosynthesis, stomatal conductance and intrinsic water use efficiency of mature and sapling of the three species (Means±SE) Different capitals indicate significant difference among mature trees, while different small letters show significant difference among saplings. * indicates the values between the same mature and sapling species is significant (p<0.05)
生长阶段 Age class | 物种 Species | 清晨水势ψpd | 中午水势ψmd | ψpd-ψmd |
---|---|---|---|---|
成年树Mature | 马尾松Pinus massoniana | -0.39±0.09A | -1.11±0.10A | 0.72 |
槲栎 Quercus aliena | -0.24±0.02A | -2.34±0.17B | 2.10 | |
栓皮栎Q. variabilis | -0.23±0.06A | -2.49±0.18B | 2.25 | |
幼树 Sapling | 马尾松Pinus massoniana | -0.31±0.01a | -0.97±0.08a | 0.67 |
槲栎 Quercus aliena | -0.19±0.03b | -1.52±0.17b* | 1.33 | |
栓皮栎Q. variabilis | -0.13±0.04b | -2.66±0.08c | 2.53 |
Table 1 Predawn leaf water potential values (ψpd, MPa) (Mean±SE) and midday leaf water potentials (ψmd, MPa) of the three species in different age classes (Mean±SE)
生长阶段 Age class | 物种 Species | 清晨水势ψpd | 中午水势ψmd | ψpd-ψmd |
---|---|---|---|---|
成年树Mature | 马尾松Pinus massoniana | -0.39±0.09A | -1.11±0.10A | 0.72 |
槲栎 Quercus aliena | -0.24±0.02A | -2.34±0.17B | 2.10 | |
栓皮栎Q. variabilis | -0.23±0.06A | -2.49±0.18B | 2.25 | |
幼树 Sapling | 马尾松Pinus massoniana | -0.31±0.01a | -0.97±0.08a | 0.67 |
槲栎 Quercus aliena | -0.19±0.03b | -1.52±0.17b* | 1.33 | |
栓皮栎Q. variabilis | -0.13±0.04b | -2.66±0.08c | 2.53 |
Fig.2 Foliar δP13PC of mature and saplings of the three species (Mean±SE) Different capitals indicate significant difference among mature trees, while different small letters show significant difference among saplings. * indicates the values between the same mature and sapling species is significant (p<0.05)
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