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遊客餵食行為對於流路型埤塘水質影響－以八德埤塘自然生態公園為例
Effect of Tourist Feeding Activities on Stream Type Pond Water Quality-Take the Ba-De Pond Ecology Park as an example
Abstracts
埤塘是北臺灣臺地的重要農業地景，近年來隨著都市擴張而逐漸消失，其中部分埤塘改作為休憩的埤塘公園，維持了既有的地景脈絡也提供都市居民具有水域與休憩功能的開放空間。而民眾在人造水域環境餵食的習慣，也對於埤塘的水質產生了影響，衍生出了新的管理課題。本研究以八德埤塘自然生態公園為案例，依據現場流路可以分為入水口後的東側流路、西側流路與末端的大池，同步進行水質監測與餵食人數調查。結果顯示餵食人數多集中於最後的大池，但流路中西側水路餵食人數約為東側水路2.08倍。對東、西側水路的水質資料進行獨立樣本T檢定，結果顯示，懸浮固體（p = 0.009）為非常顯著性差異，而濁度（p = 0.070）、總磷（p = 0.031）、葉綠素a（p = 0.032）則為顯著性差異，顯示東西側水質有明顯差異，且西側水路較差。本研究結果顯示餵食行為強度可能對於水質產生一定的影響，對於遊客餵食禁止或是管制將是在埤塘大量成為都市遊憩活動空間後的重要課題，本研究初步提出以規範結合環境教育的混合式管理機制，期待可以在兼顧遊憩、生態、管理成本的面向下，維持環境品質，後續仍有待更多實證研究驗證其成效。
Parallel abstracts
Ponds are critical agricultural landscapes in the northern Taiwan terraces, gradually disappearing with urban expansion. Some of these ponds have been repurposed into recreational pond parks, maintaining the existing landscape context while providing urban residents with open spaces featuring aquatic and recreational functions. However, feeding in artificial aquatic environments has impacted the water quality of these ponds. This study takes the example of the Nature Ecological Park in Ba-de Pond as a case study, categorizing the site flow paths into the eastern and western flow paths. Both flow paths enter the terminal main pond. Simultaneous investigations of water quality and feeding population were conducted. Results indicate that feeding activities are concentrated mainly in the terminal main pond, with approximately 2.08 times more feeding observed in the western flow path compared to the eastern flow path. Independent sample t-tests were conducted on water quality data from the eastern and western flow paths. Results show significant differences in suspended solids (p = 0.009) and significant differences in turbidity (p = 0.070), total phosphorus (p = 0.031), and chlorophyll a (p = 0.032). These findings indicate significant differences in water quality between the eastern and western flow paths, with the latter exhibiting poorer water quality. The results of this study indicate that the intensity of feeding behavior may have a certain impact on water quality. Prohibiting or regulating tourist feeding will be an important issue after the pond has become a significant urban recreational space. We preliminarily propose a hybrid management mechanism that combines regulations with environmental education. This innovative approach holds the potential to maintain environmental quality while balancing recreation, ecology, and management costs. Further empirical research is needed to verify its effectiveness, but the potential for positive change is promising.