Temperature controls growth of Pinus taiwanensis along an elevational gradient

Lyu, Min; Sun, Mengke; Peñuelas, Josep; Sardans, Jordi; Sun, Jun; Chen, Xiaoping; Zhong, Quanlin; Cheng, Dongliang

doi:10.1007/s00468-020-02045-z

Cited by 8 publications

(11 citation statements)

References 39 publications

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“…The soil N concentrations did not vary significantly with elevation. In contrast to soil N concentrations, the soil P concentrations increased significantly with elevation, from 0.19 ± 0.01 mg g –1 (mean ± standard error, SE) at E1 to 0.43 ± 0.02 mg g –1 (mean ± standard error, SE) at E5 ( Lyu et al, 2021 ).…”

Section: Methodsmentioning

confidence: 82%

“…R 25 increased significantly with elevation, from 1.1 ± 0.04 μmol m –2 s –1 (mean ± standard error, SE) at E1 to 1.92 ± 0.10 μmol m –2 s –1 (mean ± SE) at E5 in summer ( P < 0.001, Figure 4B ) and from 1.79 ± 0.06 μmol m –2 s –1 (mean ± SE) at E1 to 2.29 ± 0.03 mg g –1 (mean ± SE) at E5 in winter ( P < 0.001). We chose to use R 25 because it is widely reported in the literature and used for comparison of respiration rates of plants from different biomes, and 25°C is above the average temperature of the sampling sites, which had a mean annual temperature of 14.2°C ( Slot et al, 2014b ; Reich et al, 2016 ; Way et al, 2019 ; Lyu et al, 2021 ).…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, Lyu et al (2021) found that the respiration rates for P. taiwanensis increased with elevation in summer. It indicate that respiration rates of P. taiwanensis can acclimate to altered temperatures and weakening the positive feedback of plant respiration to rising global air temperature.…”

Section: Do Increased Respiration Rates Increase Atmospheric Carbon Dioxide Concentrations?mentioning

confidence: 96%

“…T growth ( R 25 because it is widely reported in the literature and used for comparison of respiration rates of plants from different biomes, and 25 • C is above the average temperature of the sampling sites, which had a mean annual temperature of 14.2 • C (Slot et al, 2014b;Reich et al, 2016;Way et al, 2019;Lyu et al, 2021).…”

Section: Elevation (M)mentioning

confidence: 99%

“…Therefore, elevation provides a method of the space-for-time substitution to predict trait variability in response to temperature and elevation gradients. Pinus taiwanensis is the dominant evergreen coniferous tree species that extends through a wide latitudinal and altitudinal range and the Wuyi Mountains is the most outstanding area for biodiversity conservation in southern China ( Lyu et al, 2021 ). Its wide distribution provides a unique opportunity to study the physiological mechanisms responsible for tree thermal acclimation of subtropical forest.…”

Section: Introductionmentioning

confidence: 99%

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Thermal Acclimation of Foliar Carbon Metabolism in Pinus taiwanensis Along an Elevational Gradient

et al. 2022

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Climate change could negatively alter plant ecosystems if rising temperatures exceed optimal conditions for obtaining carbon. The acclimation of plants to higher temperatures could mitigate this effect, but the potential of subtropical forests to acclimate still requires elucidation. We used space-for-time substitution to determine the photosynthetic and respiratory-temperature response curves, optimal temperature of photosynthesis (Topt), photosynthetic rate at Topt, temperature sensitivity (Q10), and the rate of respiration at a standard temperature of 25°C (R25) for Pinus taiwanensis at five elevations (1200, 1400, 1600, 1800, and 2000 m) in two seasons (summer and winter) in the Wuyi Mountains in China. The response of photosynthesis in P. taiwanensis leaves to temperature at the five elevations followed parabolic curves, and the response of respiration to temperature increased with temperature. Topt was higher in summer than winter at each elevation and decreased significantly with increasing elevation. Q10 decreased significantly with increasing elevation in summer but not winter. These results showed a strong thermal acclimation of foliar photosynthesis and respiration to current temperatures across elevations and seasons, and that R25 increased significantly with elevation and were higher in winter than summer at each elevation indicating that the global warming can decrease R25. These results strongly suggest that this thermal acclimation will likely occur in the coming decades under climate change, so the increase in respiration rates of P. taiwanensis in response to climatic warming may be smaller than predicted and thus may not increase atmospheric CO2 concentrations.

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Section: Methodsmentioning

confidence: 82%