本研究之主要目的在藉秀姑巒溪乏舟活動，探討在遊憩體驗過程中，影響社會心理容許量之因素以及評定社會心理容許量之模式。研究結果發現對社會心理容許量之評定而言，擁擠認知是一個比滿意度更適合的指標。接著以回歸分析建立擁擠認知與使用量之函數關係，評定秀姑巒溪泛舟活動之社會心理容許量。因爲秀姑巒溪社會心理容許量的問題主要發生在休息站及終點，同時環境過度使用及其他進客行爲的認知會影響擁擠認知，針對這些問題加以改善，將可增加秀姑巒溪泛舟活動之社會心理容許量。

The objectives of this research were to investigate the factors that affected social carrying capacity and to establish the model of social carrying capacity in the case of the white water rafting on the Hsiukuluan River. The finding has shown that crowding perception is more suitable than satisfaction as an indicator for forecast of social carrying capacity. The major concerns about social carrying capacity occured at rest area and terminal. Besides use level, perceptions of overuse impacts as well as perceptions of visitors' behavior would affect their crowding perceptions. Improving facilities and regulating visitors' behaviors would increase the social carrying capacity.