Effects of Free-air Carbon Dioxide Enrichment on Growth and Uptake of Nitrogen in Winter Wheat NODULE CHARACTERISTICS OF THREE-YEAR-OLD CARAGANA MICROPHYLLA AND THEIR RESPONSES TO ENVIRONMENTAL CHANGES IN AN INNER MONGOLIA GRASSLAND Effects of elevated CO2 concentration on the quality of agricultural products: A review.  Effects of nitrogen application and elevated atmospheric CO2 on electron transport and energy partitioning in flag leaf photosynthesis of wheat. Effects of nitrogen fertilization on wheat leaf photosynthesis under elevated atmospheric CO2 concentration. Effects of elevated atmospheric CO2 concentration and nitrogen addition on the growth of Calamagrostis angustifolia in Sanjiang Plain freshwater marsh. Effects of elevated CO2 concentration on root and needle anatomy and physiological functions in Pinus koraiensis seedlings Regulation of Nitrogen Level on Photosynthetic Energy Partitioning in Wheat Leaves under Elevated Atmospheric CO2 Concentration 13C/12C ratio in tree ring of subtropical monsoon evergreen broad-leaved forest and CO2concentration in atmosphere