关键词: 水媒传布, 水生植物种子, 沉降特性, 漂浮能力, 河流生态修复

Abstract: 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 kinetic 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.

Key words: hydrochory, aquatic plant seeds, settling characteristic, floating ability, river ecological restoration