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題 名 | 以AnnAGNPS模式評估集水區不同管理措施之效益=Assessment of Benefit for Different Watershed Management Practices Using AnnAGNPS Model |
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作 者 | 林昭遠; 嚴雅郁; 林家榮; | 書刊名 | 水土保持學報 |
卷 期 | 41:1 2009.03[民98.03] |
頁 次 | 頁17-30 |
分類號 | 436.124 |
關鍵詞 | 年農業非點源污染模式; 集水區管理措施; 土砂災害; AnnAGNPS; Watershed management practices; Debris hazards; |
語 文 | 中文(Chinese) |
中文摘要 | 年農業非點源污染模式(ANNualized AGricultural NonPoint Source model, AnnAGNPS)是 由單場暴雨事件的AGNPS 模式發展而成之連續模擬模式,與地理資訊系統(GIS)結合,可快速 載入地面資料減少資料處理時間,使其能夠更簡便地使用模式。本研究利用AnnAGNPS 模式 模擬不同管理作業對泥砂產量、沖蝕量及逕流量之改善效益,分別進行陡峭區位農地回收及水 系周邊配置緩衝帶之管理作業配置。結果顯示:陡峭區位農地回收對於泥砂產量及沖蝕量的改 善效率分別為30.23%及30.61%,而逕流量的減少則以水系周邊配置緩衝帶效果較佳;陡峭區 位農地回收之單位面積改善效率皆優於水系周邊配置緩衝帶,說明集水區中農業活動的減少及 林地的增加有助於減少集水區內之土砂災害。 |
英文摘要 | AnnAGNPS model is developed based on the single event AGNPS model. An integrated GIS interface can input ground data quickly and reduce the time of data processing. The interface makes model manipulation more efficient and convenient. In this study, AnnAGNPS model is used to simulate the improved benefits of sediment yield, soil erosion and runoff for different management practices. The different management practices include farmland retrieve for reforestation at steep area and implementing the riparian buffer strips. The results show that the derived efficiency of farmland retrieve for reforestation and establishing the riparian buffer strips are 30.23% and 30.61%, respectively. Implementing the riparian buffer strips has better reduction rate of runoff. Comparing improved efficiency of unit area, all efficiencies of farmland retrieve for reforestation are better than the riparian buffer strip implementation. As point out by study results, decrease of agricultural activities and increase of forestation may mitigate debris hazards in a watershed. |
本系統中英文摘要資訊取自各篇刊載內容。