頁籤選單縮合
題名 | 以InVEST模式評估水庫集水區農業非點源污染之防治效益=Evaluation of Treatment Efficiency for Agriculture Non-point Source Pollution in Reservoir Watershed Using InVEST Model |
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作者 | 柯佑霖; 黃文政; | 書刊名 | 水土保持學報 |
卷期 | 48:2 2016.06[民105.06] |
頁次 | 頁1733-1747 |
分類號 | 432.7 |
關鍵詞 | 阿公店水庫; 植生緩衝帶; InVEST model; A-Kung-Ten reservoir; Vegetated buffer strips; |
語文 | 中文(Chinese) |
中文摘要 | 農業非點源污染為影響河流、湖泊、水庫水質之主要因素,根據水庫管理單位調查報告顯示,阿公店水庫集水區因上游過量的營養鹽輸出,使得水庫庫區受到嚴重的優養化威脅。本研究使用InVEST (Integrated Valuation of Environmental Services and Tradeoffs)模擬阿公店水庫集水區土地利用變化之營養鹽留存量及輸出量,在超限利用區農地回收造林、農地主要污染路徑行覆蓋作物處理及濱水區配置植生緩衝帶等三種情境模擬下,評估阿公店水庫集水區農業非點源污染之防治效益。污染防治效益依序為:濱水區>農地主要污染路徑>超限利用區。濱水區緩衝帶配置效益最高,能夠有效降低營養鹽輸出,農地主要污染路徑配置效益次之,主要原因係針對營養鹽濃度較高之匯流區位,可由模式動態萃取其最佳配置區位;超限利用區因離河道較遠,致其模擬效益最差。若同時採用三種情境,則營養鹽輸出量可降至原土地利用之80%,研究結果可供水庫管理相關單位之用。 |
英文摘要 | Non-point source pollution (NSP) from upland agriculture is the major source of water quality impacts to rivers, lakes and reservoirs. A-kung-ten reservoir has been suffered from eutrophication phenomena which caused by upland nutrients. To reduce the impact of upland agriculture on water quality in the reservoir, the InVEST (Integrated Valuation of Environmental Services and Tradeoffs) model was employed to determine the nutrient retention capacity for current and/or simulation status of A-kung-ten reservoir watershed. Strategies of reforestation at the over landuse sites, plantation of covering grasses along the main polluted flow paths, and placement of vegetated buffer strips at the riparian areas are adopted as scenarios to simulate the nutrient retention and export. Simulation results show that the pollution control efficiency for the improvement sites are: the riparian areas, the main polluted flow paths, and over landuse in order. Scenario of betterment in the riparian areas could achieve the highest efficiency on reducing nutrient export. The main pollution paths could achieve the second highest efficiency on nutrient retention due to highly nutrient uptake of covering grasses which could be placed dynamically at the right places extracted from the simulation. Over landuse reclamation nearby the upstream shows the worst efficiency. Once the integrated scenarios are adopted, the nutrient export could be decreased up to 80% of the current landuse. The results of this study could be the reference for related authorities in reservoir watershed management. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。