摘要
以台北县石碇乡之玉桂岭南势坑野溪为研究区域,收集该溪流之环境背景资料包括:整治前后地形图、流速、水深、河床底质分布与鱼种分布等资料。以福禄数为指标,将河川栖地形态区分为深潭、深流及浅濑3种类型,再运用陈与陈评估鱼类栖地面积之方法,探讨该溪流在整治前及整治后各种栖地类型(如深潭、深流及浅濑)所占面积的变化,并分析各种栖地形态之鱼类可用栖地面积的改变。研究结果显示:研究区域经整治后,深潭栖地明显减少,其鱼类可用面积较整治前约减少50%。
The Nan--Shi--Keng mountainous stream located in Shidin township, Taipei county is selected to study the influence of remediation work on the stream in this study. The data, including the Digital Terrain Model（DTM）, flow depth, flow velocity, substrate and fish distribution, etc. , in the mountainous stream were collected. Three habitat types, pool, run, and riffle, are classified by the criteria of Froude number. The method proposed by Chen and Chen was applied to evaluate the variations of habitat types for the stream before and after remediation. The results clearly show a decrease of pool habitat for the stream after remediation. The value of weighted usable area （WUA） for the pool habitat is decreased by 50% after stream remediation.
出处
《水土保持研究》
CSCD
北大核心
2009年第6期253-258,共6页
Research of Soil and Water Conservation
关键词
福禄数
柄地型态
可用柄地面积
froude number
habitat type
weighted usable area
