國?臺灣大學地?環境資源學系; 國?臺灣大學地?環境資源學系Department of Geography, National Taiwan University; Department of Geography, National Taiwan University李禹璇李建堂2017-09-072018-06-282017-09-072018-06-282009-08http://ntur.lib.ntu.edu.tw//handle/246246/281498本研究?用普查技術進?磺嘴山步道現況品質調查，探討各項衝擊問題與環境因子之關係，並使用步道最大凹陷深?法與截面面積法進?步道土壤沖蝕調查，分析步道坡?與植群?型對步道土壤沖蝕之影響。研究結果顯示，磺嘴山步道以岩石??、?面?濘、樹根??與凹陷過深衝擊較為嚴重。各項步道衝擊與坡?間存在相關性，坡?較陡的?段容?發生樹根??與岩石??、凹陷過深等衝擊; 而?面過寬與?面?濘則多發生於坡?平緩的?段。此外，植群抗踐踏能?較低、坡?較陡的闊??型?段，衝擊問題最為顯著。土壤沖蝕方面，最大凹陷深?（MIP值、MIC值）以及步道截面面積與步道坡?呈現顯著相關，代表步道坡?越陡，平均最大凹陷深?越大與截面面積越大，土壤沖蝕程?越嚴重。然而，當步道坡?超過等級Ⅳ（坡?大於16°）時，土壤沖蝕?相對?低，顯示坡?因子有其影響之?界值存在。This study used a trail census survey to investigate the quality of Mount Huangzuei Trail and analyze the relationship between the characteristics of different impacts. The survey of rail erosion applied the MIP (Maximum Incision: Post-construction), MIC (Maximum Incision: Current Tread) and trail transects method to explore the impact of trail slope and vegetation types upon trail erosion. The results reveal that rock exposure, wet muddy tread and excessive incision were the most common impact problems encountered in the study area. The occurrences of trail impact were closely correlated with trail slope. Steep slopes tended to have root exposure, rock exposure and excessive incision, while gentle slopes tended to have muddiness on trail and excessive width. Among various vegetation types, broadleaf forest is the one in which trail impacts appeared most frequently. The maximum incision depth measured via the MIP method and the MIC method and the trail transect areas measured via the trail transects method were in proportion to trail slope. The MIP, MIC and trail transect areas tended to increase with trail slope. However, the amount of soil erosion would reach the maximum as slope reached level IV (i.e., 16°) and a decrease would ensue. This manifested that trail slope was the key factor in soil erosion but the amount of erosion decreased after a critical threshold of slope steepness was reached. This study used a trail census survey to investigate the quality of Mount Huangzuei Trail and analyze the relationship between the characteristics of different impacts. The survey of rail erosion applied the MIP (Maximum Incision: Post-construction), MIC (Maximum Incision: Current Tread) and trail transects method to explore the impact of trail slope and vegetation types upon trail erosion. The results reveal that rock exposure, wet muddy tread and excessive incision were the most common impact problems encountered in the study area. The occurrences of trail impact were closely correlated with trail slope. Steep slopes tended to have root exposure, rock exposure and excessive incision, while gentle slopes tended to have muddiness on trail and excessive width. Among various vegetation types, broadleaf forest is the one in which trail impacts appeared most frequently. The maximum incision depth measured via the MIP method and the MIC method and the trail transect areas measured via the trail transects method were in proportion to trail slope. The MIP, MIC and trail transect areas tended to increase with trail slope. However, the amount of soil erosion would reach the maximum as slope reached level IV (i.e., 16°) and a decrease would ensue. This manifested that trail slope was the key factor in soil erosion but the amount of erosion decreased after a critical threshold of slope steepness was reached.524724 bytesapplication/pdf步道品質步道衝擊步道沖蝕土壤沖蝕陽明山國家公園trail qualitytrail impactstrail erosionsoil erosionYangmingshan National Parkjournal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/281498/1/0056_200908_1.pdf