Effect of Grazing Intensities on Primary Productivities and Nutrient Seasonal Dynamic of Deyeuxia angustifolia Meadow in Sanjiang Plain STUDIES ON BIOMASS AND PRODUCTION OF THELOWER SUBTROPICAL EVERGREEN BROAD-LEAVEDFOREST IN HEISHIDING NATURAL RESERVEVII. LITTERFALL, LITTER STANDING CROPAND LITTER DECOMPOSITION RATE A STUDY ON BIOTICAL PRODUCTIVITY OF ROBINIA PSEUDOACACIA PLANTATION AT LOESS PLATEAU AREA OF NORTH WEIHE RIVER Study on energy of Pinus taiwanensis community in Wuyi Mountains Litter and the Nutrient Storage of Different Species Arrangement Patterns in Protective Greenbelt in Karamay, Xinjiang Fine Root Mass and Internal Nutrient Cycling in a Broad Leaved-Korean Pine Forest Community of the Changbai Mountain A comparative study of fine-root standing crop in different-aged Caragana korshinskii plantations Studies on Energy in Two Mangrove Communities, Bruguiera sexangula and Kandelia candel, in China A study on optimal grazing rates in Stipa purpurea alpine grassland in Northern Tibet Study on calorific value and energy dynamics of Puccinellia tenuiflora in Songnen grassland Benthic Algal Communities Distribution in the Littoral Zone of Yunnan Plateau Lakes Structure of the Phytoplankton Community and Its Relationship to Water Quality in Donghu Lake, Wuhan, China