TAILIEUCHUNG - Short-term effects of warming treatment and precipitation manipulation on the ecophysiological responses of Pinus densiflora seedlings

The aim of this study was to investigate the short-term effects of warming treatment and precipitation manipulation on the growth, photosynthetic rate, and chlorophyll content of Pinus densiflora seedlings based on a climate change scenario in Korea. Twoyear-old P. densiflora seedlings were planted in a nursery in April 2013. | Turkish Journal of Agriculture and Forestry Turk J Agric For (2016) 40: 621-630 © TÜBİTAK doi: Research Article Short-term effects of warming treatment and precipitation manipulation on the ecophysiological responses of Pinus densiflora seedlings 1 1 1 1 1 1 1,2, Soon Jin YUN , Saerom HAN , Seung Hyun HAN , Seongjun KIM , Guanlin LI , Minji PARK , Yowhan SON * 1 Department of Environmental Science and Ecological Engineering, Graduate School, Korea University, Seoul, Korea 2 Department of Biological and Environmental Sciences, Qatar University, Doha, Qatar Received: Accepted/Published Online: Final Version: Abstract: The aim of this study was to investigate the short-term effects of warming treatment and precipitation manipulation on the growth, photosynthetic rate, and chlorophyll content of Pinus densiflora seedlings based on a climate change scenario in Korea. Twoyear-old P. densiflora seedlings were planted in a nursery in April 2013. The air temperature of warmed plots (W) was set to increase by 3 °C compared to control plots (C) using an infrared heater in May 2013. The three precipitation manipulations consisted of decreased precipitation using transparent panels (–30%; P–), increased precipitation using pumps and drip irrigation (+30%; P+), and a control (0%; P0). Root collar diameter and seedling height of P. densiflora were measured in April and October 2013. Net photosynthetic rate and total chlorophyll contents were measured from June to October 2013. Warming treatment increased the growth of root collar diameter, and the interaction effect of the warming treatment and precipitation manipulation on it was also significant. In contrast, no significant effects were found for the growth of seedling height. These results demonstrate that warming treatment might affect the growth of root collar diameter and seedling height differently. It was also .

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