本研究探討依步道環境與設計的步道鋪面，如何有效降低遊憩的環境衝擊。以陽明山國家公園為研究地點，提出步道「鋪面有效性指數」(Surfacing Effectiveness Index，SEI)，計算步道鋪面管理能達到降低衝擊的有效程度。研究方法採用既成事實分析(after-the-fact analysis)進行步道調查，以20 m 距離之間隔抽樣(Distance-based sampling)，調查步道共16 km 長。本研究整合步道「鋪面有效性指數」與環境、使用者活動及步道管理等三方面的影響變數，統計分析「鋪面有效性指數」與其影響因子的關係，並提出影響變數與鋪面有效性的迴歸關係式。比較結果得知：(1)影響鋪面有效性的主要因子是坡向夾角與腹地寬度，坡向夾角與鋪面有效性為正相關，步道的腹地寬度與鋪面有效性為負相關；(2)植群差異也會影響步道衝擊管理的成效，石板步道與石階步道在草地環境的鋪面有效性較好。本研究成果可作為國家公園管理單位在進行步道管理或步道更新時的評估依據。

This research is a study of trail surfaces in Yangmingshan National Park that had been designed with reference to their surrounding environment and how the design had effectively minimized recreational impacts. An after-the-fact analysis method was used. Sampling was carried out at 20-m intervals of eight trails with 16km in total,to evaluate current trial surface conditions. A Surfacing Effectiveness Index (SEI) was proposed to analyze impacts from environmental conditions, trail management, and use intensity. The results from stepwise multiple regression analysis showed that SEI correlated significantly and positively with slope alignment angle, and negatively with potential expansion width. Stone slab surface trails and stone steps in open grassy areas were more effective in minimizing trail impacts than in forested areas.