Effects of nitrogen addition on species richness and relationship between species richness and aboveground productivity of alpine meadow of the Qinghai-Tibetan Plateau, China Analysis on the livestock capability of the Jinghe River basin on the Loess Plateau STUDIES ON VARIATION AND SELECTION OF POPULATION IN USSURI POPLAR Effects of N, P, and K Fertilizers on Silique Shatter Resistance and Related Traits of Rapeseed Chlorophyll, anthocyanin, and gas exchange changes assessed by spectroradiometry in Fragaria chiloensis under salt stress ACCUMULATION, DISTRIBUTION AND EXCRETION OF LOW LEVEL OF ~(65)Zn AND ~(134)Cs IN SOME MARINE MOLLUSC Rice Quality under the Cultivation of SRI Effects of Nitrogen Fertilizer Management on Yield and Nitrogen Use Efficiency of Eryou 498 in Triangle-Planted System of Rice Intensification Cloning and Expression of Type Ⅱ Ribosome Inactivating Protein Genes CsRIP 1 and CsRIP 2 from Camellia sinensis Preliminary Research on Arbuscular Mycorrhizal Fungi of Dipterocarpaceae in Xishuangbanna,Southern Yunnan