Xin Yue, Shang Bo, Chen Xing-Ling, Feng Zhao-Zhong
State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
Huan Jing Ke Xue. 2016 Sep 8;37(9):3642-3649. doi: 10.13227/j.hjkx.2016.09.048.
The open top chambers were used to explore the influences of nitrogen deposition on the response of photosynthetic characteristics of to ozone. The results showed that the net photosynthetic rate (), apparent electron transport rate (ETR), excitation energy capture efficiency of PSⅡ reaction center ('/'), coefficient of photochemical quenching (qP), the maximum of carboxylation efficiency () and the maximum rate of electron transport () were significantly decreased with the increasing O concentration. However, intercellular CO concentration () was significantly increased and stomatal conductance () remained unchanged. There was significant difference in biomass at the end of growing season. However, in a certain extent, nitrogen deposition improved photosynthetic capacity and biomass of . The interaction of O and nitrogen deposition was not significant in terms of plant photosynthetic characteristics. The current results provided scientific basis for the protection of in response to the global O concentration and nitrogen deposition increase.
开放式顶部气室用于探究氮沉降对[植物名称]光合特性对臭氧响应的影响。结果表明，随着臭氧浓度升高，净光合速率（）、表观电子传递速率（ETR）、PSⅡ反应中心激发能捕获效率（'/）、光化学猝灭系数（qP）、最大羧化效率（）和最大电子传递速率（）均显著降低。然而，胞间CO₂浓度（）显著升高，气孔导度（）保持不变。生长季末生物量存在显著差异。然而，在一定程度上，氮沉降提高了[植物名称]的光合能力和生物量。臭氧与氮沉降在植物光合特性方面的交互作用不显著。当前结果为应对全球臭氧浓度升高和氮沉降增加保护[植物名称]提供了科学依据。
