A review of nitrogen allocation in leaves and factors in its effects EFFECT FACTORS OF SOIL RESPIRATION AND THE TEMPERATURE‘S EFFECTS ON SOIL RESPIRATION IN THE GLOBAL SCALE Effect of Factors on Callus Biomass and Synthetic Mass of Hypericin in Hypericum perforatum Research advance of the expansion machanism,effect factors and high-yield breeding in popcorn Effects of Different Culture Conditions on Isoflavones Content in Callus of Alfalfa Analysis on reproduction age in Larix chinensis and effect factors VARIATIONS OF WOOD PROPERTIES AND CHARACTERISTICS AND A TENTATIVE SELECTION FOR STRUCTURAL TIMBERS OF CUNNINGHAMIA LANCEOLATA PROVENANCES Organic carbon content in major grassland types in Alex, Inner Mongolia Soil respiration of forest ecosystems and its respondence to global change A Review of Eco-Friendly Wood Logistics System Research Research Progress of Multi-Scale Pore Structure and Characterization Methods of Wood