2016-06-302024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/695301摘要：夢幻湖生態保護區位於七星山東南側，為國家重要濕地，海拔約860公尺，面積約1公頃，並為臺灣特有種--臺灣水韭僅有之自然生育地。由於棲地之水文條件(降雨量、地表逕流、蒸發散量、水位高度等)為影響棲地生態環境之重要因素之一，其中水位高度更是影響夢幻湖濕地植物社會組成之主要因素；因此，調查棲地的水文狀況亦能了解臺灣水韭對自然棲地之需要。由於夢幻湖過去並無詳細的水文監測資料，本計畫希望可建立夢幻湖水文循環的基礎資料，作為未來研擬夢幻湖生態保護區的水位管理策略及棲地保育之基礎。 夢幻湖水量隨季節降雨量變化顯著，湖區更可能因極端氣候而發生長期乾旱或高水位情形。另外，因湖區體積小，水質與水位易受天候變化而劇烈變動，故需儘早進行環境與生物的監測調查。針對水文監測資料部分，研究團隊已於夢幻湖北側設置雨量筒及蒸發皿，並定期前往現勘及回收儀器資料，以做為夢幻湖代表降水量及蒸發量資料。地表逕流部分，已於今年(民國105年)8月11日下午於夢幻湖北側山溝，初步實測得降雨所形成之地表逕流量，此部份未來亦將持續進行監測。未來將於現地設置雙環入滲儀以及自計式水位計，所得水位資料配合本區另案地形測量成果及SET(Surface Elevation Tables)數據推算水深分佈，進而計算水位超越機率。除持續監測項目，本計畫將蒐集夢幻湖生態保護區歷史衛星影像、農林航測所照片等，瞭解湖區面積與周遭環境變化，並比較相同時間鞍部氣象站資料，以了解夢幻湖歷史背景，作為比較之基準。<br> Abstract: Menghuan Pond Ecological Protected Area, which locates in the southeastern side of Mt. Qixing and covering an area of approximately 1 hectare, is an important national wetland. Situated at an altitude of around 860 m, Menghuan Pond Ecological Protected Area is the only natural habitat of endemic species as well. In such a habitat, the hydrological conditions, including precipitation, surface runoff, water level, and evapotranspiration, are significant factors influencing the ecological environment. Among the factors mentioned above, water level is the primary factor that determines the species composition of vegetation within Menghuan Pond wetland. Thus, investigation of the hydrological conditions would be beneficial to understand the natural-habitat demand of Taiwan Isoetes. In order to pave the way for water management and habitat conservation in the future, the present project plans to build the database of hydrological cycle of Menghuan Pond Ecological Protected Area. The water quantity of Menghuan Pond strongly depends on seasonal precipitation. The pond may undergo long-term drought or full water elevation due to extreme climate. In addition, the water level and quality of the pond are sensitive to the weather because of its small volume. Therefore, it is necessary to conduct such investigations focusing on biological resources and environment. A rain gage bucket and an evaporation pan have been installed at the northern part of Menghuan Pond area by the research team to obtain the representative quantity of local precipitation and evaporation. As for the surface runoff, the research team has first measured the inflow water quantity at a ditch located in the northern part of Menghuan Pond area, which the research team would keep monitoring in the future.夢幻湖陽明山國家公園水文收支水深Menghuan Pond Ecological Protected Areahydrological budgetwater depth