생태하천복원사업 전후 경제적 가치 비교분석 = Ex-ante and Ex-post Economic Value Analysis on Ecological River Restoration Project

다국어 초록 (Multilingual Abstract)

To assess an economic value of Cheonggyecheon river restoration project, an in-depth exit survey data was collected to apply travel cost method in this study. Poisson model, Negative Binomial, Zero-truncated Poisson, and Zero-truncated Negative Binomial model were executed due to the nature of count data. Empirical results showed that regressors were statistically significant and corresponded to general consumer theory. Since our survey data showed over-dispersion, Zero-truncated Negative Binomial was selected as an optimal one to analyze travel demand of Cheonggyecheon by model goodness of fit test among those aforementioned empirical models. Estimating an economic value of Cheonggyecheon river restoration project, which is known as an ecological river restoration project, we used annual visit of individual traveler and an optimal model. Suffice to say that the annual economic value of Cheonggyecheon river restoration project was estimated as 193.4 billion won in 2013.

국문 초록 (Abstract)

본 연구는 서울시에서 추진한 청계천 복원사업에 대한 경제적 가치를 평가하기 위해 심층출구면접조사 방식으로 수집된 자료를 바탕으로 여행비용법(Travel Cost Method, TCM)을 적용하였다. 가산자료의 특성을 감안하여 분석모형은 포아송모형(Poisson Model, PM), 음이항모형(Negative Binomial, NB), 절단된 포아송모형(Zero-truncated Poisson, ZTP), 그리고 절단된 음이항모형(Zero-truncated Negative Binomial, ZTNB)을 사용하였다. 분석결과 추정계수들은 통계적으로 유의하게 나타났고 일반적인 소비자경제이론에 부합하는 결과가 도출되었다. 조사된 자료에서 과산포현상(Over-dispersion)이 발견되었으며 모형적합도검정을 통해서 절단된 음이항모형(Zero-truncated Negative Binomial, ZTNB)이 청계천 방문객의 수요를 추정하는 데 최적모형으로 선정되었다. 생태하천복원사업인 청계천복원사업의 경제적 가치를 추정하기 위해 방문객의 연평균 방문횟수와 최적모형에서 추정된 계수를 통해서 분석한 결과 청계천의 경제적 가치는 2013년 기준으로 연간 약 1,902 원으로 추정되었다.

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