| Summary: | 碩士 === 國立屏東科技大學 === 熱帶農業研究所 === 88 === The reduction rate of vegetative coverage, degree of changes in flora, index of impact on vegetation, and degree of hardening of soils were used in this study as parameters to measure trampling effects and resilience of vegetation at two recreational sites, She-ting and Lung-pan, Pingtung, Taiwan. Meanwhile, on-site investigations and simulated trampling were used to determine 1) the influence of season, surface layer on the ground, and quantity of light on the trampling effects; 2) the influence of season, frequency of use, and quantity of use on the trampling effects and the resilience of vegetation; and 3) the influence of season, disturbance, and quantity of use on the trampling effects and the resilience of vegetation. The influence on the trampling effects was the greatest in dry season and the smallest in surface layer on the ground. The change of the vegetation was the greatest under the canopy of trees. The degree of impact on vegetation in Lung-pan was the most severe. Results of this study showed that among the parameters of season, frequency of use and quantity of use there was an interactive influence on the trampling effects and the resilience of vegetation. Over all, the trampling effects were the greatest in the dry season and the resilience was the greatest in the wet season. Also, the resilience was greater if the use was scattered. Conversely, the resilience was lower and the trampling effects were greater if the quantity of use was higher. The relationship between the index of impact on vegetation and the quantity of use was power of three of an asymmetric sigmoid curve with two inflexion points. Results of this study also showed that there was an interactive influence of season, disturbance and quantity of use on the trampling effects and the resilience of vegetation. The trampling effects in the dry season and the resilience in the wet season remained the greatest. The trampling effects on the disturbed grassy areas were greater, but the resilience was also greater. The greater the quantity of use resulted in the greater of the trampling effects and the less of the resilience of vegetation.
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