经水媒传布种子的漂浮及沉降特性研究进展

Review on seeds floating and settling kinetic characteristics dispersed by hydrochory

水媒传布是水生植物种子传播的重要途径,其研究对于了解河流生态系统及其地貌变迁具有重要意义。种子作为河流中有机异质粒子,其运动特性与泥沙类似,都由其内在物理属性(如密度、大小、形状等)和外部环境(如地形、水文、水力等)确定。水媒传布的研究重点在于确定种子传播距离和最终沉积位置,对经水媒传布种子的漂浮能力、沉降特性的研究进展进行了综述,以期为河岸及湿地系统植被重建或恢复、阻止外来水生植物物种的研究提供理论基础。

Hydrochory is an important way for aquatic plant seeds dispersing and the research on seed hydrochory is of great significance to understand river ecosystem and landform variation. As an organic heterogeneous particle in rivers, the motion characteristics of aquatic plant seeds is similar with sediment particles, which are determined by inherent physical properties （density, size, shape, etc. ） and external environment （topography, hydrology, water etc. ） . The research focus of hydrochory is to determine seed dispersal distance and the final deposition position. In this paper, the study of seeds floating and settling ki-netic characteristics dispersed by hydrochory is reviewed. The research results can provide analysis foundation for the study of restoration or recovery of vegetation in riparian and wetland systems, and invasion prevention of alien species.