| Summary: | 碩士 === 國立中興大學 === 森林學系所 === 99 === The study is to research the distribution and environmental factors of aquatic vegetation from Wu River watershed, Puli Basins. 98 plots were set up as regional groups at Puli Basin, Guangin from the west until Gung creek and Dapingting from the north until Dalin the south. 135 species of the plants were recorded. According to the morphology of the types of wetland, 6 types of wetland can be broadly divided as mountain wetland, paddy wetland, lake wetland, ditch wetland, farmland wetland and flood land. 12 types of wetland vegetation via cluster analysis were divided into Sagittaria montevidensis type and Rotala rotundifolia type of mountain wetland vegetation, Monochoria vaginalis type, Ranunculus sceleratus type and Pistia stratiotes type of paddy wetland vegetation, Leersia hexandra type and Cabomba furcata type of lake wetland vegetation, Egeria densa type of ditch wetland vegetation; Ludwigia hyssopifolia type and Polygonum lapathifolium type of farmland wetland vegetation, Commelina diffusa type and Equisetum ramosissimum type of flood land vegetation. The main environmental factors of the distribution is water depth, secondary water source and other factors are not so obvious. According to the water depth, the structure of vegetation formed submerged, floating and emerged and this is the result of the aquatic plants adapt to the environment.
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