2016-03-112024-05-15https://scholars.lib.ntu.edu.tw/handle/123456789/662291摘要：以【調查地滑、崩塌、沖蝕等土砂移動現象之狀態及分佈位置，並結合所收集之水文地形資訊，以探討其機制及相互關係】、【分析地形、地質、植生等環境因子以及降雨特性等氣象因子間的影響範圍，釐清國有林集水區上游區域水土反應過程中主要的影響因子】為主。 （一）藉由水土資源調查樣區建置，監測地表、地中、地下水文動態，並掌握地滑位置、崩塌土砂、沖蝕溝消長狀態，探討臺灣國有林集水區上游之生態環境特性。 （二）確認影響國有林班地上游集水區水文反應、土砂移動之主要影響因子，有助於新技術或新工法於治理工程應用，以保育坡地生態系為導向，期能降低土砂災害之復舊經費，間接減少政府及民間於災害發生時之經濟損失。 （三）利用現地觀測之所知，分析地文、植生、氣象對水土資源之影響範圍，進而探討森林對生態環境之公益功能，以提出大自然的調節與復育能力的集水區治理建議，回饋至保育治理工程之規劃工作，落實與推廣工程環境友善機制，達成施作各項土砂處理維護時兼顧保育國有林生態系之目標。 <br> Abstract: The aims of the project are to establish long-term hillslope sites in a forested headwater catchment and to integrate information of hydrological responses in the surface, subsurface, and underground areas. In this year, we attempt to investigate spatial distribution of sediment induced by typhoons, such as landslide, shallow slope failure, sediment erosion. Additionally, we also attempt to explore the main controlling factors of topography, geology, and vegetation on hydrological responses in a forested headwater catchment. （1）Based on the establishment of long-term hillslope sites and the investigated information of hydrological responses, we will discuss the ecohydrological characteristics in a forested headwater catchment in Taiwan. （2）It will be helpful for applications of new techniques or methods on field investigation a forested headwater catchment if the main controlling factors on hydrological responses are clarified. （3）We will analyze dataset and find out the first-order controls of topography, vegetation, and meteorology on hydrological responses. The achievements of this project will contribute to make an appropriate management policy or restoration strategy for forested headwater catchments.森林源頭集水區降雨逕流過程飽和帶地表含水率土壤沖蝕Forested headwater catchmentRain-runoff processSaturated zoneSurface soil moistureSoil erosion