Effects of nitrogen and phosphorus addition on soil phosphatase activity in different forest types The effect of nitrogen and phosphorus applications on soil enzyme activities in Qinghai-Tibetan alpine meadows Effects of simulated N deposition on growth and Leaf N and P Content in Seedlings of Three Provenances of Schima superba under Phosphorous Deficit Stress Compensatory growth of Phaeodactylum tricornutum in response to the stress of phosphorus limitation The limitation of maximal quantum yield of photosystem Ⅱ for the detection of nitrogen limitation and phosphorus limitation of Scrippsiella trochoidea Physiological and Biochemical Changes in Microcystis aeruginosa Qutz. In Phosphorus Limitation The effect of nitrogen deposition on forest soil organic matter and litter decompostion and the microbial mechanism The Effects of Nitrogen Deposition on Leaf Physiological and Photosynthetic Characters of Schima superba Seedlings from Three Provenances