Chin J Plant Ecol ›› 2021, Vol. 45 ›› Issue (9): 942-951.DOI: 10.17521/cjpe.2021.0140
Special Issue: 植物功能性状
• Research Articles • Previous Articles Next Articles
REN Jin-Pei, LI Jun-Peng, WANG Wei-Feng, DAI Yong-Xin, WANG Lin()
Received:
2021-04-14
Accepted:
2021-08-09
Online:
2021-09-20
Published:
2021-11-18
Contact:
WANG Lin
Supported by:
REN Jin-Pei, LI Jun-Peng, WANG Wei-Feng, DAI Yong-Xin, WANG Lin. Responses of leaf hydraulic traits to water conditions in eight tree species and the driving factors[J]. Chin J Plant Ecol, 2021, 45(9): 942-951.
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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2021.0140
Fig. 1 Leaf hydraulic vulnerability curves for eight tree species in Guandi Mountain and Heicha Mountain. A, Populus cathayana. B, Quercus mongolica. C, Ulmus pumila. D, Armeniaca sibirica. E, Populus davidiana. F, Larix gmelinii. G, Pinus tabuliformis. H, Picea asperata. The vertical lines in each graph indicate the water potential (P50) when the water transport rate is at 50% of the maximum hydraulic conductivity (Kmax). G, trees in Guandi Mountain; H, trees in Heicha Mountain.
Fig. 2 Comparisons of water potential at turgor loss points (TLP) among Populus cathayana (Pc), Quercus mongolica (Qm), Ulmus pumila (Up), Armeniaca sibirica (As), Populus davidiana (Pd), Larix gmelinii (Lg), Pinus tabuliformis (Pt) and Picea asperata (Pa) in Guandi Mountain and Heicha Mountain (mean ± SE). G, trees in Guandi Mountain; H, trees in Heicha Mountain. Different uppercase letters indicate significant differences between the study areas within the same tree species; different lowercase letters indicate significant differences among tree species within the same area (p < 0.05).
Fig. 3 Comparisons of maximum hydraulic conductivity (Kmax), hydraulic vulnerability (P50) and water potential at turgor loss points (TLP) between broadleaved and coniferous species and between Guandi Mountain and Heicha Mountain (mean ± SE). G, trees in Guandi Mountain; H, trees in Heicha Mountain. Different uppercase letters indicate significant differences between study areas within the same tree group; lowercase letters indicate significant differences between tree groups within the same study area (p < 0.05).
Fig. 4 Relationships among maximum hydraulic conductivity (Kmax), hydraulic vulnerability (P50) and water potential at turgor loss points (TLP) in Guandi Mountain and Heicha Mountain (mean ± SE). G, trees in Guandi Mountain; H, trees in Heicha Mountain. **, p < 0.01.
N (No.·mm-2) | D (μm) | (t/b)3 | LT (μm) | LA (cm2) | LMA (g·m-2) | LDMC (g·g-1) | ||
---|---|---|---|---|---|---|---|---|
G | P50 | 0.866** | -0.945** | 0.714* | 0.775* | -0.921** | 0.776* | 0.453 |
Kmax | -0.749* | 0.895** | -0.563 | -0.617 | 0.813* | -0.613 | -0.392 | |
H | P50 | 0.927** | -0.898** | 0.734* | 0.920** | -0.810* | 0.915** | 0.711* |
Kmax | -0.724* | 0.942** | -0.597 | -0.594 | 0.900** | -0.597 | -0.327 |
Table 1 Relationships between leaf hydraulic traits and leaf vessel morphological traits in Guandi Mountain (G) and Heicha Mountain (H)
N (No.·mm-2) | D (μm) | (t/b)3 | LT (μm) | LA (cm2) | LMA (g·m-2) | LDMC (g·g-1) | ||
---|---|---|---|---|---|---|---|---|
G | P50 | 0.866** | -0.945** | 0.714* | 0.775* | -0.921** | 0.776* | 0.453 |
Kmax | -0.749* | 0.895** | -0.563 | -0.617 | 0.813* | -0.613 | -0.392 | |
H | P50 | 0.927** | -0.898** | 0.734* | 0.920** | -0.810* | 0.915** | 0.711* |
Kmax | -0.724* | 0.942** | -0.597 | -0.594 | 0.900** | -0.597 | -0.327 |
Fig. 5 Relationships of the changes in leaf mass per unit area (δLMA) and the changes in leaf dry mass content (δLDMC) with changes in hydraulic vulnerability (δP50) between Guandi Mountain and Heicha Mountain (mean ± SE). *, p < 0.05.
因子 Parameter | P50 | Kmax | ||||
---|---|---|---|---|---|---|
系数 Coefficient | t | p | 系数 Coefficient | t | p | |
VT | 0.680 | 3.875 | 0.002 | -1.034 | -3.003 | 0.010 |
MT | 0.299 | 1.704 | 0.112 | 0.263 | 0.763 | 0.459 |
Table 2 Level of significance in the effects of vessel traits (VT) and morphological traits (MT) on hydraulic vulnerability (P50) and maximum hydraulic conductivity (Kmax) in Guandi Mountain and Heicha Mountain
因子 Parameter | P50 | Kmax | ||||
---|---|---|---|---|---|---|
系数 Coefficient | t | p | 系数 Coefficient | t | p | |
VT | 0.680 | 3.875 | 0.002 | -1.034 | -3.003 | 0.010 |
MT | 0.299 | 1.704 | 0.112 | 0.263 | 0.763 | 0.459 |
因子 Parameter | δP50 | δKmax | ||||
---|---|---|---|---|---|---|
系数 Coefficient | t | p | 系数 Coefficient | t | p | |
δVT | -0.981 | -2.314 | 0.069 | -0.650 | -1.019 | 0.355 |
δMT | 1.594 | 3.761 | 0.013 | -0.069 | -0.108 | 0.918 |
Table 3 Significance of vessel traits variation (δVT) and morphological traits variation (δMT) to hydraulic vulnerability variation (δP50) and maximum hydraulic conductivity variation (δKmax) from Guandi Mountain to Heicha Mountain
因子 Parameter | δP50 | δKmax | ||||
---|---|---|---|---|---|---|
系数 Coefficient | t | p | 系数 Coefficient | t | p | |
δVT | -0.981 | -2.314 | 0.069 | -0.650 | -1.019 | 0.355 |
δMT | 1.594 | 3.761 | 0.013 | -0.069 | -0.108 | 0.918 |
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