| Summary: | 碩士 === 立德大學 === 休閒資源暨綠色產業研究所 === 98 === River ecosystem in the waters of biological community structure and quantity of waters by flow patterns and the physical, chemical and biological factors influence. This article discusses mainly by physical factors, river habitat restoration to increase the basic requirement is to provide fish habitat and the environment. In this article a case study Tseng-wen reservoir calculus to the river downstream from the Tseng-wen Reservoir to Tseng-wen estuary, river total length of 80,138 meters, use carp, goby branch, homalopteridae as target species in the abundance of , discuss the average dry season flow and return period flood flow from the 2, 5, 10, 25, 50, 100, 200 years, the target species of the habitat area and habitat distribution.
Water management through one-dimensional variable calculus model calculation results obtained depth and velocity of each section, with the target species, depth and velocity of the fitness curve, estimate the cross section can be the subject of species habitat suitability factor (Combined Suitability Factor , CSF), then CSF can be used to calculate weighted habitat area (Weighted Usable Area, WUA), you can estimate the abundance, dry season flow and the return period flood flow years, the carp, goby branch, homalopteridae the distribution of habitat and habitat areas.
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