2012-08-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/700330摘要：臺大實驗林自2008-2010 年執行國土保育計畫，共收回約1500 公頃之契約林地， 這些契約林地大部分以竹、茶、檳榔、果樹及蔬菜為主，對於林地水土保持及水源涵 養造成很大影響，而對碳吸存之效率亦因經營方式與林地使用而有差異。收回之林地 以原生樹種為主之不同樹種進行混合栽植復育，2009-2011 年計造林約900 公頃。本計 畫將針對森林復育後不同造林樹種之生長量與碳吸存量進行研究，先透過地面樣區調 查收集資料，藉以了解造林地內各樹種生長情形；其次利用地面調查所得之胸徑、樹 高等參數，推算造林地內各樹種之生物量及碳貯存量，並評估碳貯存能力較優良之樹 種。另針對五種主要造林樹種(臺灣櫸、楓香、光臘樹、青剛櫟、烏心石)進行光合作 用速率的日變化與季節變化，評估葉部的年生產力，以此推估出全年總碳收穫量，並 將所得結果與樣區調查所得之碳吸存量結果做一對比，找出兩者間之聯性。試驗將依 550 公尺、950 公尺及1250 公尺之不同海拔高度進行試驗，所得研究結果將可提供適 當之復育造林樹種及對山區生態系永續經營發展之評估依據，並藉國土保育收回森林 復育地區進行山區生態系功能之效益評估，以科學量化結果檢討復育之效果，並提供 國家擬定未來政策之參考。<br> Abstract: The Experimental Forest of National Taiwan University implemented the land conservation project during 2008~2010 and recovered approximately 1,500 hectares of leased woodland. These leased woodlands were primarily used to grow bamboo, tea trees, betel nut, fruit, and vegetables, and have big impacts on soil and water conservation and retention significantly. Moreover, the efficiency of carbon sequestrating varies because of the differing management methods and land uses. Recovered woodland was restored by planting mixed vegetation, the majority of which are native species. Between 2009 and 2011, the area of afforestation was approximately 900 hectares. This proposed project will investigate the difference of species in biomass and carbon sequestration within the restoration forest. First, to understand the growth of trees within different plantations, data will be collected from the sample plots which are located at three different altitudes, 550 m, 950 m, and 1250 m, respectively. The plantation biomass and carbon storage capacity of different species will be calculated by using the parameters, for instance, the diameter at breast and tree height, obtained from ground survey. This data will be used to identify the suitable species for the carbon storage capacity within the specific forest land. In addition, the photosynthesis rate of five species, most used for afforestation, will be investigated in diurnal and seasonal variations in order to estimate the annual carbon gain. The result will be compared with the one from ground survey data and therefore make a link between each other. The results generated from this proposed project will provide a guideline for selecting suitable species for the forest restoration in order to develop a sustainable montane ecosystem. This scientific quantification results to evaluate the benefits of forest restorat ion on montane ecosystem function and service will also provide a great reference for policy maker to develop new policies.復育造林生長量碳吸存光合作用Forest restorationBiomassCarbon sequestrationPhotosynthesis