灌區農田停灌對河川水質之影響

Effects on Stream Water Quality Due to Suspension at Irrigation Area Farmland

簡傳彬(Chuan-Pin Chien) ； 方文村(Wen-Tsun Fang) ； 陳淑貞(Shu-Chen Chen)

《農業工程學報》 57卷1期 (2011/03) Pp. 16-34

https://doi.org/10.29974/JTAE.201103.0002

摘要

台灣地區近年來由於受到生活與工業用水需求增加，及乾旱時期供水量不足以滿足各標的需求之情況下，常停灌部分灌區以移用農業供水供民生使用。此項大區域之停灌措施將影響水田三生功能之效益，例如部份灌區之停灌將降低水稻田之水質淨化功能，進而影響區域之河川水質：爲了解停灌對區域河川水質之影響，本研究在石門水庫灌區內選擇大堀溪灌區作爲研究區域，進行水稻田灌區水質資料之蒐集及調查，韭建立水質模式以分析大區域停灌對電導度、生化需氧量、總氮及總磷等河川水質之影響：結果可作爲維持農業永續發展與生態保育環境之條件下，區域水資源調配之參考。

關鍵字

河川水質 ； 水質模式 ； 水稻田

並列摘要

Because of recent increasing demand of domestic and industrial water uses and unsatisfied water supply for different sectors during drought, Taiwan often suspends irrigation for part of irrigation areas so that agricultural water can be transferred to domestic use. Such irrigation suspension practices at large area will influence beneficial results from paddy field. For example, irrigation suspension would reduce the purifying function of water quality for paddy field. Furthermore, stream water quality in the area may also be affected. To understand the effects on stream water quality due to farmland irrigation suspension, this research selected Da-Jue Creek area as a demonstration area at the Shihmen Reservoir irrigation area. Collecting and investigation for the data for water quality of paddy field was conducted. A water quality model for analyzing the effects on river watt quality, such as EC, BOD, TN and TP, due to large-area farmland irrigation suspending is established. The results can be the references for regional water resources allocation by maintaining agricultural sustainable development and ecological conservation environment.

並列關鍵字

Stream Water Quality ； Water Quality Model ； Paddy Field