Specific leaf area (SLA, leaf area per unit dry mass) and Leaf dry matter content (LDMC, the ratio of leaf dry mass to fresh mass) are important variables in plant ecology because they are associated with many critical aspects of plant growth and survival. In this paper, we examined variations in specific leaf area and leaf dry matter content of 20 dune plants (ten annuals and ten perennials) which have different distributional patterns in Kerqin sandy land, northern China. Our purposes were to detect the v...