本研究期望透過遊憩衝擊與實質生態承載量的觀念，使保護區在不違背資源保育原則下，配合遊憩承載量限制的因應措施，同時能滿足大眾需求的遊憩品質，使資源得以永續利用。本研究主要分二大部份進行保護區遊憩活動對自然環境衝擊之探討：一、遊憩衝擊特性分析四獸山自然環境衝擊中，選擇植群因子，進行抽樣、調查、分析，以求出登山健行與烤肉二項活動種類之強度對植群破壞程度之關係。二、實質生態承載量分析探討四獸山在強大壓力的登山健行與烤肉活動行爲下，以可接受的改變限度(LAC)之理論觀念，藉用問卷方式計算學者、管理者與遊客大眾三者可接受的改變限度，從實質生起觀點界定出步道與烤肉區的遊憩承載量。

The purpose of this study is expected to apply the concepts of recreational impact and physical-ecological carrying capacity to management strategies in conservation area, so that the resources can be used forever under the natural resources protection principles.This study is primarily divided into two parts:1. The analysis on characteristics of recreational impact. It is proposed to select vegetation as the major factor to identify the natural environment impact at Four-Beast Mountain. The proceeding of sampling, surveying, analyzing, attempt to estabish the relationships between activities' intensity of mountain climbing and barbecuing, with vegetation destructions.2. The analysis on physical-ecological carrying capacity. With physical-ecological point of view, it is applying the concept of the limits of acceptable change (LAC) theory through questionnaire on LAC with scholars, managers and visitors, then, an appraisal of the recreation carrying capacity of trails and barbecue zone is defined.