Role of Stream Restoration on In-Stream Water Quality in an Urban Watershed-A Case Study

溪流復育在都市集水區溪流水質中所扮演之角色一研究案例

Ariamalar Selvakumar ； Anthony N. Tafuri ； Richard Field

《Journal of Ecotechnology》 3卷2期 (2007/12) Pp. 23-37

https://doi.org/10.29769/JE.200712.0006

摘要

本項研究討論的是都市集水區中河岸及河道復育技術對於提升水體大型無脊椎動物指數與溪流水質的效果。本項研究工作包括對位於維吉尼亞Fairfax市的Accotink河North Fork支流1800英呎長沖蝕嚴重的河岸及河道復育前後，監測其水體水質之改變。 復育工程於2006年六月完成，其中包含：沿岸原生植物種的植栽及穩定河岸、河道之生物工程。這些工作目的為使河岸恢復於穩定狀態，因而減少河岸的侵蝕及河川中之沉積負荷。水體水樣收集後經過物理、化學及生物（大型無脊椎動物指標、細菌指標）分析參數變化了解河川水質的改變。本文將對初步的採樣和監視結果加以概述及討論。

關鍵字

河川復育 ； 連續性監測 ； 都市暴雨逕流 ； 水體水質 ； 最佳化管理作業措施

並列摘要

This study addresses the effectiveness of stream bank and channel restoration techniques on improving benthic macroinvertebrate indices and in-stream water quality within an urban watershed. The project involved monitoring before and after restoration of 1,800 linear feet of degraded stream channel in the North Fork of Accotink Creek in the City of Fairfax, Virginia. Restoration, which was completed in June 2006, included installation of native plant materials along the stream and bioengineering structures to stabilize the stream channel and bank. These actions were intended to restore the stream channel to a stable condition, thereby reducing stream bank erosion and sediment loads in the stream. In-stream samples were collected and analyzed for physical, chemical, and biological (macroinvertebrates, bacterial indicators) parameters to document the changes in stream quality as a result of the restoration. The preliminary results of the sampling and monitoring are summarized in the paper.

並列關鍵字

Stream Restoration ； Continuous Monitoring ； Urban Stormwater Runoff ； Water Quality ； Best Management Practices