Species interactions and plant traits of dune grasses in a burial experiment

A multi-factorial greenhouse experiment of three common dune grasses (Ammophila breviligulata, Uniola paniculata, and Spartina patens) in different interspecific combinations was performed, using sand burial and salinity sea spray as abiotic stressors. Sand burial (25 cm) was applied once at the beginning of the study. Sea spray was applied three times per week. Morphological measurements (leaf elongation, maximum root length, biomass, leaf C, N and isotopes) were collected after 12 weeks.本研究开展一项多因素温室实验，选取短舌滨草（Ammophila breviligulata）、锥花禾草（Uniola paniculata）与扁穗米草（Spartina patens）三种常见沙丘禾草，设置不同种间组合，以沙埋和盐雾作为非生物胁迫因子。其中，25厘米深度的沙埋处理于实验起始时单次施加，盐雾处理每周施加三次。实验持续12周后，采集叶片伸长量、最大根长、生物量、叶片碳（C）、氮（N）含量及其同位素比值等形态学指标。