种子传播是决定植物遗传和适应特性及种群规模的重要生活史阶段。种子风力传播在草原及荒漠生态系统极其普遍。种子初始风力传播的模型模拟、物种、种群属性和景观结构如何相互作用以决定二次传播距离、不同的种子传播方式赋予植物的适应策略是当今种子风力传播研究面临的最大挑战，但以不同形态属性的种子作为研究对象开展的相关研究尚很罕见。本研究拟选择具有4种不同风力传播机制的12种沙拐枣属植物，借助大尺寸野外可移动风洞对种子的脱落、初始风力传播、二次风力传播过程进行模拟研究，构建种子风力传播模型，剖析传播体形态差异对初始与二次风力传播过程的影响，阐释初始与二次风力传播过程及其相互关系所赋予的植物适应对策，揭示种子风力传播规律，为荒漠区植被恢复和生物多样性保护提供理论依据。

Seed dispersal is an important stage of plant life history, determining plant genetic and adaptive characteristics and the plant population size. Wind seed dispersal is one of the main dispersal modes in grassland and desert ecosystems. Modelling primary seed dispersal by wind, elucidating the effects of characteristics of species, plant population and landscape on secondary seed dispersal distances, and exploring the adaptive strategies that dispersal patterns represent are the biggest challenges for ecologists involved in seed dispersal by wind. However, studies concerning diaspores with different morphological characteristics have rarely been conducted. Based on the investigation on 12 Calligonum species with four wind dispersal mechanisms, the objectives of this study are: 1) to elucidate the processes of seed release and the primary and secondary wind dispersals by means of large portable wind tunnel; 2) to develop models for seed dispersal by wind; 3) and to determine how the morphological properties of diaspore affect the primary dispersal and secondary wind dispersals and what adaptation strategies the primary and secondary wind dispersals reflect. This study will help to reveal the patterns of seed dispersal by wind and provide theoretical guides for vegetation restoration and biodiversity conservation in desert regions.