Effects of Above- and Below-Ground Interactions of Plants on Growth of Tree Seedlings in Low-Elevation Tropical Rainforests on Hainan Island, China
Abstract
:1. Introduction
2. Material and Methods
2.1. Study Area
2.2. Data Collection
2.3. Data Statistical Analysis
3. Results
3.1. Effects of Treatment on Photosynthetically Active Radiation and Root Biomass
3.2. Effects of Treatment on the Seedling Relative Growth Rate
3.3. Relationship between Photosynthetically Active Radiation and Seedling RGR
3.4. Relationship between Root Biomass and Seedling RGR
4. Discussion
4.1. The Seedling Relative Growth Rate in Different Treatments
4.2. The Relative Growth Rate of Deciduous and Evergreen Species
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Treatment | Photosynthetically Active Radiation (μmol·m−2·s−1) | Root Biomass (g·cm−3) |
---|---|---|
Control | 81.70 ± 7.12 a | 0.76 ± 0.23 a |
Removal | 451.7 ± 67.71 b | 0.65 ± 0.18 a |
Trenching | 80.68 ± 7.68 a | 0.23 ± 0.04 b |
Removal + Trenching | 432.76 ± 61.62 b | 0.24 ± 0.07 b |
Treatment | Types of Species | Regression Equation | R2 | p |
---|---|---|---|---|
C | Deciduous species | y = −0.51 + 0.16x | 0.49 | <0.01 |
Evergreen species | y = −0.55 + 0.17x | 0.84 | <0.01 | |
R | Deciduous species | y = −2.26 + 0.45x | 0.47 | <0.01 |
Evergreen species | y = −0.78 + 0.18x | 0.41 | <0.01 | |
R + T | Deciduous species | y = −0.98 + 0.24x | 0.36 | <0.01 |
Evergreen species | y = −1.18 + 0.27x | 0.49 | <0.01 | |
T | Deciduous species | y = −0.54 + 0.18x | 0.60 | <0.01 |
Evergreen species | y = −0.72 + 0.22x | 0.68 | <0.01 |
Treatment | Types of Species | Regression Equation | R2 | p |
---|---|---|---|---|
C | Deciduous species | y = 0.23 − 0.12x | 0.06 | 0.17 |
Evergreen species | y = 0.31 − 0.22x | 0.13 | 0.09 | |
R | Deciduous species | y = 0.58 − 0.09x | 0.06 | 0.77 |
Evergreen species | y = 0.29 + 0.02x | 0.07 | 0.91 | |
R + T | Deciduous species | y = 0.47 − 0.14x | 0.06 | 0.82 |
Evergreen species | y = 0.08 + 1.37x | 0.15 | 0.07 | |
T | Deciduous species | y = 0.73 − 2.14x | 0.10 | 0.12 |
Evergreen species | y = 0.35 − 0.77x | 0.04 | 0.59 |
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Lu, X.; Zang, R.; Xu, Y.; Yu, S.; Zhao, H. Effects of Above- and Below-Ground Interactions of Plants on Growth of Tree Seedlings in Low-Elevation Tropical Rainforests on Hainan Island, China. Forests 2021, 12, 905. https://doi.org/10.3390/f12070905
Lu X, Zang R, Xu Y, Yu S, Zhao H. Effects of Above- and Below-Ground Interactions of Plants on Growth of Tree Seedlings in Low-Elevation Tropical Rainforests on Hainan Island, China. Forests. 2021; 12(7):905. https://doi.org/10.3390/f12070905
Chicago/Turabian StyleLu, Xinghui, Runguo Zang, Yue Xu, Shouchao Yu, and Hongxia Zhao. 2021. "Effects of Above- and Below-Ground Interactions of Plants on Growth of Tree Seedlings in Low-Elevation Tropical Rainforests on Hainan Island, China" Forests 12, no. 7: 905. https://doi.org/10.3390/f12070905