Title of article :
Species-specific growth and photosynthetic responses of first-year seedlings of four coniferous species to open-field experimental warming
Author/Authors :
HAN, Saerom Korea University - Department of Environmental Science and Ecological Engineering, Korea , LEE, Sun Jeoung Korea Forest Research Institute - Center for Forest and Climate Change, Korea , YOON, Tae Kyung Korea University - Department of Environmental Science and Ecological Engineering, Korea , HAN, Seung Hyun Korea University - Department of Environmental Science and Ecological Engineering, Korea , LEE, Jongyeol Korea University - Department of Environmental Science and Ecological Engineering, Korea , KIM, Seongjun Korea University - Department of Environmental Science and Ecological Engineering, Korea , HWANG, Jaehong Korea Forest Research Institute - Forest Practice Research Center, Korea , CHO, Min Seok Korea Forest Research Institute - Forest Practice Research Center, Korea , SON, Yowhan Korea University - Department of Environmental Science and Ecological Engineering, Korea , SON, Yowhan Qatar University - Department of Biological and Environmental Sciences, Qatar
From page :
342
To page :
349
Abstract :
Temperature increase due to climate change may affect the growth and physiological traits of trees. To cope with climate change, it is important to understand the responses of trees to these changes, as well as how these responses vary among species, functional groups, and biomes. In this study, we aimed to examine the species-specific growth and photosynthetic responses of firstyear seedlings of 4 coniferous species to future temperature increase by conducting an open-field experimental warming study. The air temperature in the warmed plots was maintained at 3.02 °C higher than that in the control plots with an open-field experimental warming system. The seeds of Pinus densiflora, Pinus koraiensis, Abies holophylla, and Abies koreana were planted in 2012, and the effects on growth, biomass allocation, leaf area, net photosynthetic rate, and chlorophyll contents of first-year seedlings were measured. Compared to the other species, P. densiflora showed pronounced responses to warming after the growing period, including increase in root collar diameter (RCD) and seedling height respectively by 10% and 6%, total biomass by 45%, net photosynthetic rate by 61%, and total chlorophyll content by 45%. For P. koraiensis, RCD, seedling height, and total chlorophyll contents increased by 7%, 5%, and 20% in warmed plots, respectively. A. holophylla showed an increase in RCD by 7%, whereas A. koreana responded inconsistently to warming. Changes in the seedling height to diameter ratio, organ-specific biomass, leaf area, and specific leaf area were also species-dependent. In addition, altered growth throughout the observation period was due to acclimation and phenological change. This suggests that speciesspecific growth responses to warming are affected by altered net photosynthetic rate, chlorophyll contents, and leaf area. Species-specific responses of first-year seedlings of 4 coniferous species to warming and the relationship between growth and photosynthesis might be applied to estimate the growth and distribution of coniferous species after future temperature rises.
Keywords :
Experimental warming , Japanese red pine , Korean fir , Korean pine , Manchurian fir , seedling growth
Journal title :
Turkish Journal of Agriculture and Forestry
Journal title :
Turkish Journal of Agriculture and Forestry
Record number :
2534994
Link To Document :
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