本研究主要探討灌溉水圳水泥化對魚類等生物的影響,於1994年7月至1997年6月與2001年7月至2004年6月在台中縣霧峰鄉的四德圳進行田野研究,兩段時間分別代表水圳水泥化前後之狀況。比較水泥化前後發現之魚類、兩棲爬蟲類與鳥類,在物種及數量上均有明顯差異。利用Shannon-Wiener與Simpson等多樣性指數,比較水泥化前後魚類及兩棲爬蟲類等類群生物多樣性的差別,結果顯示水泥後生物多樣性有降低之趨勢。因此建議相關單位在進行各項水利設施現代化工程的同時,也應重視各地區原有之生物資源及環境特性,落實生態工法兼顧工程考量及生態需求之精神。
This study presents ditch ecology that's affected due to the process of traditional structure replaced by concrete irrigation ditch. We chose Se-Ter ditch for study area in Wu-Feng township. This survey was conducted from July 1994 to June 1997 and July 2001 to June 2004 separately. Construction were started and finished in 2000. We used Shannon-Wiener function and Simpson,s index to examine the difference of the biological composition of the ditch. The results showed that biodiversity index dropped after construction. By this way, we concluded that the biodiversity be connected with the material of which the ditch was made.