Influence of Simulated Warming to the Carbon, Nitrogen and Their Stability Isotope (δ13C,δ15N) Contents in Alpine Meadow Plant Leaves Biological nitrogen fixation in the upper water column in the south Taiwan Strait during summer 2011 Differential characteristics of soil δ15N under varying vegetation in karst areas Nitrogen transports and transformations in the Wuchuan headwater stream Atmospheric N wet deposition in Hangzhou region under rice\|wheat\|vegetable cropping system Ecological studies on the food web structures and trophic relationships of multiple species coexistence in paddy fields using stable carbon and nitrogen isotopes Food web structure of Poyang Lake during the dry season by stable carbon and nitrogen isotopes analysis Nitrate contamination and source tracing from NO-315N in groundwater in Weifang, Shandong Province The studies on the food web structures and trophic relationships in Guangxi Dongfang Cave by means of stable carbon and nitrogen isotopes Research Progress of Relationships between Plant δ15N and Influence Factors (Review)