坡地果園於山邊溝處理下之逕流量估測研究

Runoff Estimate in a Slopeland Orchard Treated by Hillside Ditch Practice

李宛庭(Lee Wan-Ting)

指導教授 ： 唐琦

國立屏東科技大學/工學院/水土保持系所/碩士(2018年)

https://doi.org/10.6346/THE.NPUST.SWC.012.2018.D10

摘要

本研究於國立屏東科技大學水土保持系戶外教室之坡地芒果園，試驗樣區之集水面積約為0.3 ha，於2017年4~9月觀測坡地果園於山邊溝處理下配合全園覆蓋處理下於暴雨後之地表逕流量變化，進而探討坡地果園建構山邊溝後之逕流量估測。研究結果顯示：實測逕流係數皆低於水土保持技術規範之丘陵地開發整地後參考值，而實測集流時間均有較芮哈(Rziha)經驗公式估算者滯後，當以觀測期間實測之最大洪峰流量0.0169 cms對照合理化公式估算出2年重現期距之洪峰流量為0.054 cms，顯示坡地果園山邊溝於覆蓋良好情況下，其地表逕流能夠有效地被減少。

關鍵字

坡地果園 ； 山邊溝 ； 逕流量

並列摘要

This study focused on the runoff discharge variation after storm events and setting hillside ditch with cover treatment for a slopeland mango orchard, which is located at the outdoor classroom of soil and water conservation, National Pingtung University of Science and Technology. The plot area was 0.3 hectare, and all the runoff observation was conducted from April to September, 2017. The results had summarized as: the observed runoff coefficient was less than reference from Technical Regulations for Soil and Water Conservation, Council of Agriculture, Executive Yuan. The measured time of concentration was delayed the estimation computed by Rziha’s experimental formula. The maximum peak flows of observed period was 0.0169 cms, which compared with the estimate the peak flow by rational formula with 2-year return period was 0.054 cms, it had shown the slopeland orchard with hillside ditch and full cover would reduce runoff effectively.

並列關鍵字

Slopeland orchard ； hillside ditch ； runoff discharge

參考文獻

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