Estimation of spur dike-affected fish habitat area

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題名:	Estimation of spur dike-affected fish habitat area
作者:	吳瑞賢;Ray-Shyan, Wu;Yan-Ru, Chen;Yi-Liang, Ge
貢獻者:	工學院土木工程學系
關鍵詞:	Animals;Ecosystem;Environmental Monitoring - methods;Fishes - classification;Fishes - growth & development;Rivers;Taiwan
日期:	2012-04-01
上傳時間:	2026-04-21 13:27:09 (UTC+8)
出版者:	Editorial Board of Chinese Journal of Applied Ecology;China
摘要:	摘要： Based on the HEC-RAS and River 2D modes, and taking 5% change rate of weighted usable area (WUA) as the threshold to define the spur dike- affected area of target fish species Acrossocheilus paradoxus in Fazi River in Taiwan, this paper studied the affected area of the fish habitat by spur dike, and, in combining with the references about the installations of spur dikes in Taiwan in recent 10 years, analyzed the relative importance of related affecting factors such as dike height, dike length (water block rate), average slope gradient of river way, single or double spur dike, and flow discharge. In spite of the length of the dike, the affected area in downstream was farther, and was about 2-6 times as large as that in upstream. The ratio of the affected area in downstream / upstream decreased with increasing slope gradient, but increased with increasing dike length and flow discharge. When the discharge was approximate to 10 years return periods, the ratio of the affected area would be close to a constant of 其他題名： Ying Yong Sheng Tai Xue Bao 出版者： China 出版日期： 2012-04 出處： Ying yong sheng tai xue bao, 2012-04, Vol.23 (4), p.923 資源來源： Alma/SFX Local Collection 識別號： ISSN: 1001-9332 識別號： PMID: 22803455
顯示於類別:	[土木工程學系 ] 期刊論文

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