Responses of Ecological Stoichiometric Characteristics of Carbon, Nitrogen, and Phosphorus to Periodic Submergence in Mega-Reservoir: Growth of Taxodium distichum and Taxodium ascendens
Abstract
:1. Introduction
2. Results
2.1. Effects of Submergence Treatment on the Growth
2.2. Effects of Submergence Treatment on the C, N, and P Ecological Stoichiometric Characteristics
2.3. Correlation Analysis of the Growth Conditions and the C, N, and P contents of T. distichum and T. ascendens
3. Discussion
3.1. The Response of Growth to Submergence
3.2. The Responses of C, N, and P Ecological Stoichiometry Characteristics to Submergence
3.3. The Relationship between Growth and C, N, and P Contents
4. Materials and Methods
4.1. Study Site and Experimental Materials
4.2. Sample Collection
4.3. Measurement of Element Content
4.4. Data Analysis
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Growth Parameters | Taxodium distichum | Taxodium ascendens | ||||
---|---|---|---|---|---|---|
SS | MS | DS | SS | MS | DS | |
Height (m) | 6.87 ± 0.07 a | 5.59 ± 0.01 b | 5.41 ± 0.01 c | 6.27 ± 0.04 a | 5.73 ± 0.03 b | 5.46 ± 0.04 c |
Crown area (m2) | 8.01 ± 0.17 a | 6.45 ± 0.11 b | 4.79 ± 0.28 c | 7.23 ± 0.20 a | 5.81 ± 0.21 b | 5.03 ± 0.08 c |
Basal diameter (mm) | 104.95 ± 0.99 a | 94.58 ± 1.91 b | 86.51 ± 1.71 c | 100.16 ± 3.22 a | 94.35 ± 2.20 ab | 86.98 ± 2.34 b |
DBH (mm) | 73.12 ± 1.99 a | 65.00 ± 0.56 b | 56.85 ± 0.21 c | 79.37 ± 2.30 a | 71.58 ± 2.78 ab | 66.35 ± 2.74 b |
Indexes | Submergence | Organ | Submergence × Organ | |||
---|---|---|---|---|---|---|
F | p | F | p | F | p | |
C content | 2.539 | 0.093 | 18.826 | 0.000 *** | 5.955 | 0.001 *** |
N content | 12.563 | 0.000 *** | 1493.660 | 0.000 *** | 5.331 | 0.002 ** |
P content | 44.706 | 0.000 *** | 1545.718 | 0.000 *** | 60.428 | 0.000 *** |
C/N ratio | 46.386 | 0.000 *** | 1563.755 | 0.000 *** | 37.627 | 0.000 *** |
C/P ratio | 37.580 | 0.000 *** | 2585.621 | 0.000 *** | 186.738 | 0.000 *** |
N/P ratio | 7.390 | 0.002 ** | 177.072 | 0.000 *** | 24.142 | 0.000 *** |
Indexes | Submergence | Organ | Submergence × Organ | |||
---|---|---|---|---|---|---|
F | p | F | p | F | p | |
C content | 6.005 | 0.006 ** | 10.217 | 0.000 *** | 1.134 | 0.356 |
N content | 32.213 | 0.000 *** | 1417.414 | 0.000 *** | 14.366 | 0.000 *** |
P content | 1.748 | 0.189 | 361.708 | 0.000 *** | 49.614 | 0.000 *** |
C/N ratio | 29.012 | 0.000 *** | 1607.768 | 0.000 *** | 12.423 | 0.000 *** |
C/P ratio | 22.472 | 0.000 *** | 1996.119 | 0.000 *** | 49.289 | 0.000 *** |
N/P ratio | 31.091 | 0.000 *** | 190.933 | 0.000 *** | 38.294 | 0.000 *** |
Growth Parameters | C in Fine Root | N in Fine Root | P in Fine Root | C in Leaf | N in Leaf | P in Leaf | C in Branch | N in Branch | P in Branch |
---|---|---|---|---|---|---|---|---|---|
Height | 0.373 | 0.588 * | 0.904 ** | −0.785 ** | 0.712 ** | 0.499 | −0.077 | 0.203 | −0.315 |
Crown area | 0.435 | 0.516 * | 0.642 ** | −0.678 ** | 0.685 ** | 0.163 | −0.221 | 0.505 | 0.069 |
Basal diameter | 0.465 | 0.685 ** | 0.649 ** | −0.578 * | 0.553 * | 0.289 | −0.139 | 0.480 | 0.024 |
DBH | 0.537 * | 0.524 * | 0.627 * | −0.598 * | 0.669 ** | 0.217 | −0.087 | 0.533 * | 0.082 |
Growth Parameters | C in Fine Root | N in Fine Root | P in Fine Root | C in Leaf | N in Leaf | P in Leaf | C in Branch | N in Branch | P in Branch |
---|---|---|---|---|---|---|---|---|---|
Height | 0.053 | 0.785 ** | 0.767 ** | −0.534 * | −0.080 | −0.662 ** | −0.248 | −0.115 | −0.134 |
Crown area | 0.045 | 0.697 ** | 0.746 ** | −0.629 * | −0.087 | −0.687 ** | −0.262 | −0.185 | −0.066 |
Basal diameter | −0.201 | 0.469 | 0.627 * | −0.594 * | −0.314 | −0.699 ** | −0.051 | −0.196 | 0.188 |
DBH | −0.080 | 0.457 | 0.549 * | −0.427 | −0.188 | −0.620 * | −0.198 | −0.094 | 0.032 |
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Ding, D.; Liu, M.; Arif, M.; Yuan, Z.; Li, J.; Hu, X.; Zheng, J.; Li, C. Responses of Ecological Stoichiometric Characteristics of Carbon, Nitrogen, and Phosphorus to Periodic Submergence in Mega-Reservoir: Growth of Taxodium distichum and Taxodium ascendens. Plants 2021, 10, 2040. https://doi.org/10.3390/plants10102040
Ding D, Liu M, Arif M, Yuan Z, Li J, Hu X, Zheng J, Li C. Responses of Ecological Stoichiometric Characteristics of Carbon, Nitrogen, and Phosphorus to Periodic Submergence in Mega-Reservoir: Growth of Taxodium distichum and Taxodium ascendens. Plants. 2021; 10(10):2040. https://doi.org/10.3390/plants10102040
Chicago/Turabian StyleDing, Dongdong, Minghui Liu, Muhammad Arif, Zhongxun Yuan, Jiajia Li, Xin Hu, Jie Zheng, and Changxiao Li. 2021. "Responses of Ecological Stoichiometric Characteristics of Carbon, Nitrogen, and Phosphorus to Periodic Submergence in Mega-Reservoir: Growth of Taxodium distichum and Taxodium ascendens" Plants 10, no. 10: 2040. https://doi.org/10.3390/plants10102040