以野生動物保護區保育價值檢驗條件評估法之次序效果

Question-ordering Effects of Contingent Valuation Method-Evidence of Wildlife Sanctuaries in Taiwan

本文主要評估野生動物保護區之保育效益及其影響因素，並驗證以條件評估法評估台灣野生動物保護區是否存有次序效果。本研究以國內大肚溪口、蘭陽溪口、無尾港水鳥保護區等三個野生動物保護區為驗證對象，受訪樣本來自全省各縣市居民與各保護區之遊客。本研究檢驗次序效果時將受訪者分為野生動物保護區之遊客與非遊客、居民與非居民兩大分類。驗證結果發現保護區在問卷上之排列順序會影響部分民眾對保育效益之評價。另外，有實際探訪野保區經驗的民眾對野生動物保護區保育價值之願付價格大於未曾去過者，居民對其鄰近保護區的保育價值評價大於非居民。

The purpose of this paper is to test for question-ordering effect with the contingent valuation method. We use data from a survey focusing on the conservation values of three waterfowl's wildlife sanctuaries in Taiwan, Respondents are separated into groups of wildlife sanctuary closely related and less related. Empirical evidence shows that, for less-related group or non-residents/non-participants, willingness to pay is sensitive to the sequencing of Lsn-Ysng waterfowl area. Similar result is found for the closely-related group when evaluating Wu-Wei area. No effect is identified for all other question ordering. Significant differences between the two groups, however, suggest that respondents' experience and residential district may affect their valuations toward wildlife sanctusries. Dissemination of the importance of wildlife sanctuaries is therefore suggested as an essential instrument to promote conservation policy in Taiwan.