應用PHIM模式推估蓮華池三號試驗集水區流量歷線

Application of the Peatland Hydrologic Impact Model in Estimating Hydrographs and Water Yield for the Lienhuachih Experimental Watershed No. 3

陸象豫(Shiang-Yue Lu)

《台灣林業科學》 12卷2期 (1997/06) Pp. 189-201

https://doi.org/10.7075/TJFS.199706.0189

摘要

本文詳細介紹PHIM水文模式中之UPLAND子模式，並採用此模式假林業試驗所蓮華池分所三號試驗集水區為對象，推估流量歷線與出流量(water yeild)，以探討該模式在臺灣中部天然闊葉林小集水區之適用性。結果顯示以日為單位之年流量模擬，無論在歷線形狀及出流量方面，PHIM推估結果皆可獲得可95%信賴之接受度；但以小時為單位之暴雨流量歷線摸擬，則在洪峰流量及逕流體積方面有高估之現象。證實PHIM可作為臺灣中部中小集水區長期逕流量推估之模式，並可藉此模式模擬土地利用方式變更對集水區流量之影響。

關鍵字

水文模式 ； PHIM模式 ； 流量歷線 ； 出流量 ； 蓮華池

並列摘要

The submodel ”UPLAND” of the Peatland Hydrologic Impact Model (PHIM) was described and applied at the Lienhuachih Experimental Watershed No. 3, a 3.34-ha natural hardwood watershed located in central Taiwan, for simulating hydrographs and estimating water yield. Judging from the fitness of hydrographs and water yield between simulated and observed values, the simulations of daily resolution, but not for hourly, were accepted with 95% confidence. The results indicate that PHIM is reliable for estimating annual streamflow hydrographs and for determining the effects of land use changes on water yield for small watersheds in central Taiwan.

並列關鍵字

hydrologic model ； Peatland Hydrologic Impact Model ； hydrograph ； water yield ； Lienhuachih