本研究欲針對我國所有縣市之地方環保機關在污染防治業務方面，縣市之間的相對績效良窳排序，鑒於多投入多產出的同儕之間相對績效的分析情境，選擇以資料包絡分析法(Data envelopment analysis, DEA)，作為本研究之主要分析方法，藉之以分析2008年至2012年5個會計年度間所出版之《中華民國環境保護統計年報》中，所揭露記載2007年至2011年5年間，有關空氣污染、水污染、廢棄物管理、環境衛生與毒化物管理等污染防治業務相關數據，此前先輔以皮爾森相關分析法，先行過濾剃除DEA效率分析所需之投入項與產出項之間，非呈正相關之數據項目。 　　分析結果發現，不同的污染防治情境有不同的特色：空氣污染無論是在空污防治效率或是空氣品質兩者排名，都顯示出鄰近縣市之間，或有相互影響排名的可能性，而其中最具影響性之環境因素之一乃每(萬)人所分配之汽車輛數；水污染防治效率排名前段班的縣市，大多在人口、工廠、車輛等環境負荷項目數量或密度上，低於全國平均，但數據也顯示環境負荷量低的縣市不一定就有能在水污染防治效率排名上擁有優勢；廢棄物管理效率排名，北部縣市居中，中部與南部區域內排名呈現M型化；環衛毒化物管理的效率排序，只有離島地區有區域性排名不佳的問題；整合上述四種污染防治效率排序後，臺灣本島東半部名次優於西半部，西半部的中部地區及其鄰近縣市的污染防治效率有普遍性不佳的趨勢，但污染防治效率的排序前後與環境品質的排名的相關性相當微弱，因此在污染防治的整體排名上的軒輊，完全不意味著當地環境品質現況之良窳。 　　在選擇投入產出項目過程中，本研究根據唐先楠(1995)與黃旭男(1996、1999)的作法，將產出根據行政機關可控制程度，粗分為兩類，可控制程度較高者，本研究稱之為「行政產出」，反之稱為「行政效果」，「行政效果」與投入資源的關係，在污染防治方面的數據上，大多呈現顯著的負相關，因此無法列入一般DEA效率分析；在DEA效率中所計之投入資源，建議採「歲出決算」方面數據，方能符合DEA投入產出項之邏輯觀－投入影響產出，反之，有鑑於預算於行政機關之編列程序，不建議採計「預算」方面的數據，恐不符合投入影響產出之因果關係，影響DEA效率分析之品質與解釋力。 / The aim of this paper is to rank the pollution prevention performance of the local environmental protection authorities in Taiwan, and ranking of the Data envelopment analysis, the solution for measure productive efficiency of decision making units (DMUs) with multi-input and multi-output. The Ranking and analysis database were 《Yearbook of Environmental Protection Statistics, Republic of China》, published by Environmental Protection Administration, Executive Yuan, published in 2008-2012, recording about pollution prevention and control business related data of air pollution, water pollution, solid waste management, environmental sanitation, toxic chemicals and so on during 2007-2011. 　　After those analyses, these results are showing some trend in different sort pollution prevention performance. About air pollution, both of the ranking for efficiency of air pollution prevention and for air quality are showing that the ranking close between neighboring counties, and one of the most probable factors is that the number of automobile vehicles been allocated for per 10,000 people. About the water pollution efficiency ranking, most of those top class cities and counties are having lower than the national average volume or density in population, factories, vehicles and other environmental load. While integration of all 4 kinds rank of efficiency of pollution prevention, the score of Eastern Taiwan is better than Western Taiwan, and those most worst ranking concentrated in Central Western Taiwan, but the rank of efficiency of pollution prevention does not mean those cities and counties’ environmental quality are good or bad. 　　In this paper, output is distinguished from the degree of control by administrative organ: if the degree is high, the output has been sorted as “Administrative Outputs”, on the contrary, the output has been sorted as “Administrative Effect”. Most of the relationship between “Administrative Effect” and input are in negative correlation obviously, so, if the output been sorted as “Administrative effect”, Most of them could not be included in the general DEA efficiency analysis. In the other hand, the input item about money, must be adopt the Final Annual Expenditure Accounts, not Budget, that make sure the causal relationship between input and output is consistent with the DEA’s assumption.

早期政府倡導「客廳即工廠」產業發展政策，卻在土地使用分區劃分不明確、法令規範與管制不嚴謹之下，工廠直接將含有毒性與重金屬廢水，排入灌溉系統，導致農地與其生產的農作物遭到污染，威脅到社會大眾食品安全。截至民國100年底，依環保署公告資料顯示，將近8成的污染農地，整治完成並解除列管，故宣稱污染農地之改善，已達一定成效。然而，目前研究指出，台灣污染農地的整治方式，大多以翻土法進行，僅將污染土壤埋入地底，並非真正清除污染物質。另一方面，政府亦無積極改善污染源，使得部分農地即使整治後再度污染，而必須重新整治。如此情況，不禁讓許多學者質疑這樣整治的實質意義何在。 　　近年來，由於整治技術的侷限，以及龐大整治經費的壓力，對污染土地已不再以整治為唯一考量，而是透過風險的概念，藉由轉變土地利用模式，讓受污染土地得以再利用。目前台灣關於污染農地再利用之研究，大抵建議污染農地變更為非農業使用，甚至認為污染農地整治後恢復農用，效益偏低。然而，本研究認為，此等研究未考量到農地維持農用之多功能性，除商品價值外，仍有許多非商品價值，包括環境、生態、景觀等效益。 　　基此，本研究以污染農地整治後再利用，朝向種植非食用作物為主軸，並分為污染農地為何需要再利用，與污染農地如何再利用二大部分進行論述。首先以污染土地再利用的風險原則，融合多功能性之觀點，建立污染農地再利用之理論基礎。而後，進一步研擬三項污染農地再利用方案，包括「植樹造林」、「種植能源作物」、「種植花卉景觀作物」等。本研究認為整治後的污染農地，若推行此三項再利用方案，可兼顧風險原則、發揮農地農用多功能性，並避免繼續種稻威脅食品安全，以及節省政府後續管理成本等。接著，以彰化縣和美鎮作為個案，採用深度訪談的方式，針對和美鎮污染農地農民，與彰化縣污染農地相關承辦人，檢視實際整治與後續利用的困難，以及對於污染農地再利用之想法與建議。 　　最後，透過文獻分析與深度訪談結果，可獲得以下結論：（1）台灣污染農地整治方式以翻土工程為主，對農地造成破壞；（2）污染農地即使整治後，仍可能再度被污染；（3）污染農地整治完成後，以長期休耕為主；（4）台灣處理污染農地，違反再利用之基本原則。有鑑於此，本研究對於污染農地如何再利用，提出以下之政策建議：（1）推動污染農地轉作非食用作物，可創造諸多效益；（2）以中央層級確立污染農地再利用政策；（3）劃設高污染風險農地專區，優先輔導種植非食用作物。此外，必要配套措施包括：（1）依區域條件評選合適的再利用方案，提供技術與後續產銷輔導；（2）重視污染源頭管制，使工業生產者擔負污染責任。 / In the past, government advocated "living room factories" industrial development policies, but without clear land zoning and strict regulations, the factories discharged toxic and heavy metal wastewater into the irrigation system, resulting in agricultural land and the crops were contaminated, and threatened the public food safety. EPA 2011 announcement data shows that nearly 80% of contaminated agricultural land is completely remediated, and it is claimed that the improvement in contaminated agricultural land has reached some success. However, current research indicates that most Taiwan's contaminated agricultural land remediation methods, only buried the contaminated soil into the ground, not really cleaned away the pollutants. On the other hand, the government nor actively improve pollution sources, and therefore some of the agricultural land even after remediation polluted again, which must be remediated again. This situation, many scholars can't help but question what the real significance of such remediation. 　　In recent years, because of technical limitations and remediation　funding pressure on contaminated land, there is no longer only consideration in remediation, but through the concept of risk, by changing land-use patterns, so that contaminated land can be reused or revitalized. The researches on reuse of contaminated agricultural land in Taiwan, most suggest contaminated agricultural land change for non-agricultural use, and even think the benefit of contaminated agricultural land after remediation if keep agricultural use is low. However, this study suggests that past researches neglect the multifunctionality of agriculture, in addition to the value of goods, but there are still many non-commodity values, including environmental, ecological, landscape and other benefits. 　　For this viewpoint, this study concentrates on the reuse of contaminated agricultural land after remediation, and gives first place to grow non-food crops. There are two parts to discuss, including why contaminated agricultural land need to reuse, and how to reuse. First, the study establish the theoretical foundation of contaminated agricultural land reuse, which based on the risk principles of contaminated land reuse and multifunctionality of agriculture. Then, to further develop three contaminated agricultural land reuse programs, including the "trees", "energy crops", "flowers or landscape crop", etc. This study suggests that if contaminated agricultural land after remediation can implement the three reuse programs, it can not only take into account the risk principle and multifunctionality of agriculture, but also avoid threats to food safety, as well as saving the government follow-up management costs. Next, Hemei Township, Changhua County, as a case study, using depth interview for the Hemei town contaminated agricultural land's farmers and Changhua County public servant who deal with contaminated agricultural land remediation. Survey the actual situation and subsequent use difficulties of contamination agricultural land after remediation, as well as their ideas and suggestions of contaminated agricultural land reuse. 　　Finally, through a literature review and interviews results obtained the following conclusions: (1) the main remediation method of contaminated agricultural land in Taiwan is to bury the contaminated soil into the ground, and it causes damage on agricultural land; (2) contaminated agricultural land even after remediation may still be contaminated again; (3) contaminated agricultural land after remediation is mainly long-term fallow; (4) dealing with contaminated agricultural land in Taiwan is in violation of basic reuse principles. Therefore, this study suggests the following policy recommendations for how the contaminated agricultural land to reuse: (1) promote contaminated agricultural land grow non-food crops, it can create many benefits; (2) the central level government establish contaminated agricultural land reuse policies; (3) the designation of the high risk of contaminated agricultural land area, give the first place to help grow non-food crops. In addition, the necessary supporting measures include: (1) select the appropriate reuse program by regional conditions, and provide technical help and sales counseling; (2) emphasize the control of pollution sources, and make industrial producers shoulder the responsibility for the pollution.

本文以流行病學法探討空氣污染物對人體健康影響之研究，主要有3個研究重點： 　　1.採用probit模型分析空氣污染物造成的慢性與急性健康效果：實證結果發現懸浮微粒及二氧化硫對慢性支氣管炎、肺氣腫與氣喘三種慢性病組合之罹患，有顯著的正向效果；懸浮微粒、臭氧及PSI對15種急性病症組合有顯著的促發作用。 　　2.運用兩階段估計法，將急性計量反應函數中之慢性疾病變數內生化：估計結果顯示懸浮微粒、臭氧及PSI對急性病症仍有顯著的促發作用，而慢性疾病變數之顯著性則大幅提高。急性健康效益的估計顯示，如果沒有將慢性疾病變數內生化，可能會造成效益的低估。 　　3.利用隨機效果模型分析急性panel資料：此部分以Limdep軟體進行估計，結果發現懸浮微粒、臭氧及PSI對急性病症亦有顯著的促發作用，抽煙、運動、所得與工作或學校環境有無污染等解釋變數則不顯著，與前述研究之結果不同。