土地開發單位於從事環境影響評估作業常只注重自然環境分析,對於攸關社區居民權益的社會影響評估卻無詳實之評估作業。本文以「增設蘆洲交流道併附近土地開發案」為例,經由社會成本與效益分析之探討,評估土地開發是否對社區具有正面之效益,以為決策之參酌。 Environment Impact of the land development includes natural analysis and social evaluation, and the former is importantly considered, furthermore, as a case study of‘Lu-jou Interchange Development' following indexes of decision to review social environmental impact.