Jero Hertz Jeng Doctoral graduate student Department of
- Slides: 56
國立中興大學水土保持學系 博士班專題討論 緩衝草帶攔截逕流土砂之效益評估 專題討論三之三 授課老師:林俐玲 鄭皆達 陳鴻烈 林德貴 Jero Hertz Jeng 報告者:鄭 旭 涵 Doctoral graduate student, Department of Soil and Water Conservation, National Chung-Hsing University, Taichung 402, Taiwan, R. O. C. 96年 5月26日 LAB OF ENVIRONMENTAL RESTORATION 1
國立中興大學水土保持學系 博士班專題討論 Impact of vegetated buffer strips on sediment and total P transport 文獻來源 緩衝帶寬度(m) Doyle et al. (1977) Thompson et al. (1978) 減少率(%)* 泥砂產量 總磷量 4. 0 - 62 12. 0 - 55 36. 0 1 70 21. 3 73 67 27. 0 79 83 Edwards et al. (1983) 30. 5 50 49 Dillaha et al. (1986) 4. 6 81 58 9. 1 91 69 4. 6 70 61 9. 1 84 79 4. 6 66 27 9. 2 8. 3 44 Young et al. (1980) Dillaha et al. (1989) Magette et al. (1989) 10
類地毯草坡度 20%、粗粒徑及小流量 Sediment Discharge (g/min) 1800 3 m 4. 5 m 1500 6 m 1200 900 600 300 0 0 5 10 15 20 25 30 Time (min) 39
類地毯草坡度 20%、粗粒徑及小流量 Sediment Discharge (g/min) 1800 3 m 4. 5 m 1500 6 m 1200 900 600 300 0 0 5 10 15 20 25 30 Time (min) 40
類地毯草坡度 20%、粗粒徑及小流量 Sediment Discharge (g/min) 1800 3 m 4. 5 m 1500 6 m 1200 試驗至 17分鐘 時,出砂曲線 出現劇烈之爬 升現象 900 600 300 0 0 5 10 15 20 25 30 Time (min) 41
類地毯草坡度 20%、粗粒徑及小流量 Sediment Discharge (g/min) 1800 3 m 4. 5 m 1500 6 m 1200 900 600 300 0 0 5 10 15 20 25 30 Time (min) 44
類地毯草坡度 20%、粗粒徑及小流量 Sediment Discharge (g/min) 1800 3 m 4. 5 m 1500 6 m 1200 900 600 300 0 0 5 10 15 20 25 30 Time (min) 45
類地毯草坡度 20%、粗粒徑及小流量 Sediment Discharge (g/min) 1800 3 m 4. 5 m 1500 6 m 1200 900 600 300 0 0 5 10 15 20 25 30 Time (min) 46
類地毯草坡度 20%、粗粒徑及小流量 Sediment Discharge (g/min) 1800 3 m 4. 5 m 1500 6 m 1200 隨著緩衝綠帶帶寬 的增加,其明顯出 砂時間點隨之延後 900 600 300 0 0 5 10 15 20 25 30 Time (min) 47
百喜草坡度 9%及細粒徑 Sediment Discharge (g/min) 1500 3 m 1200 1 4. 5 m 2 6 m 900 1 600 2 300 1 2 0 0 5 10 15 20 25 30 35 Time (min) 48
百喜草帯寬 3 m、坡度 9%及細粒徑 Sediment Discharge (g/min) 1500 1 大流量 2 小流量 1200 900 600 300 0 0 5 10 15 20 25 30 35 Time (min) 49
百喜草帯寬 4. 5 m、6 m、坡度 9%及細粒徑 Sediment Discharge (g/min) 1500 4. 5 m 1200 6 m 900 600 300 0 0 5 10 15 20 25 30 35 Time (min) 51
百喜草帯寬 4. 5 m、6 m、坡度 9%及細粒徑 Sediment Discharge (g/min) 1500 4. 5 m 1200 6 m 900 1 600 2 300 1 2 0 0 5 10 15 20 25 30 而於帶寬 4. 5 m及6 m時,因 Time (min) 淤砂容量較大,故此現象較 無明顯之呈現 35 52
報 告 完 畢 Thank You ! 56
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