STUDY ON THE RELATIONSHIP BETWEEN THEPHOTOSYNTHETIC FEATURES OF FOURCONIFEROUS SPECIES SAPLINGS AND AIR HUMIDITY Effect of Sand Burial on Height Growth of Pinus sylvestris var.mongolica Saplings and Its Physiological Responses Response of the Growth and Photosynthetic Properties of Pinus sylvestris var.mongolica Saplings to Strong Wind-sand Flow Blowing Biodiversities and Distribution Patterns of Saplings in Different Forest Communities in the Nanling Mountain, Southern China Comparing ecophysiological characteristics of Castanopsis fargesii seedlings and saplings under different disturbance regimes:A case study of the Tiantong evergreen broad-leaved forest,Zhejiang Province of China Effects of moderate high-temperature stress on photosynthesis in saplings of the three dominant tree species of subtropical forest Response of photosynthesis to water stress in four saplings from subtropical forests under elevated atmospheric CO2 concentration Response of structural plasticity of Tilia amurensis sapling crowns to different light conditions Effect of Drought Stress and Exogenous Oligo-chitosan on the Osmotic Adjustment Ability of One-Year-Old Apple Treelet Effects of sustained wind-sand flow on photosynthesis and transpiration rates of Pinus sylvestris var. mongolica saplings Effects of simulated submergence and drought on the nutrient content of soils planted with Dawn Redwood (Metasequoia glyptostroboides) saplings Physiological Properties and Growth of Cinnamomum camphora Saplings under Drought Stress and Rewatering