暖温带落叶阔叶林辽东栎和五角枫生长和光合生理生态特征对模拟氮沉降的响应

刘校铭,杨晓芳,王璇,张守仁

Effects of simulated nitrogen deposition on growth and photosynthetic characteristics of Quercus wutaishanica and Acer pictum subsp. mono in a warm-temperate deciduous broad- leaved forest

LIU Xiao-Ming,YANG Xiao-Fang,WANG Xuan,ZHANG Shou-Ren

Table 1 Effects of nitrogen (N) treatment, tree species and their interaction on some eco-physiological and growth traits of Quercus wutaishanica and Acer pictum subsp. Mono in Dongling Mountain

性状 Trait 氮 N 树种 Species 氮 × 树种 N × Species 净光合速率 Net photosynthetic rate (Pn) *** *** *** 气孔导度 Stomatal conductance (Gs) *** *** *** 蒸腾速率 Transpiration rate (Tr) *** *** *** 水分利用效率 Water use Efficiency (WUE) ns ns ns 叶绿素含量 Chlorophyll contents (Chl) *** *** ns 光系统II最大光化学效率 Maximal PSII efficiency (PHI(Po)) ns ns ns 光系统II电子传递链电子受体库大小 PSII size of QA pool (Sm) *** ns ns 初级醌受体被还原周转次数 PSII QA reduced turn over number (N) *** ** ns 光合氮利用效率 Photosynthetic nitrogen use efficiency (PNUE) ns ns ** 当年生枝长度 Length of current year branch *** * ns 当年生枝生物量 Biomass of current year branch * *** ns 辽东栎种子质量 Quercus wutaishanica seed mass ns - -