<p>Modern food production is a complex, globalized system in which what we eat and how it is produced are increasingly disconnected. This thesis examines some of the ways in which global trade has changed the mix of inputs to food and feed, and how this affects food security and our perceptions of sustainability. One useful indicator of the ecological impact of trade in food and feed products is the Appropriated Ecosystem Areas (ArEAs), which estimates the terrestrial and aquatic areas needed to produce all the inputs to particular products.</p><p>The method is introduced in Paper I and used to calculate and track changes in imported subsidies to Swedish agriculture over the period 1962-1994. In 1994, Swedish consumers needed agricultural areas outside their national borders to satisfy more than a third of their food consumption needs. The method is then applied to Swedish meat production in Paper II to show that the term “Made in Sweden” is often a misnomer. In 1999, almost 80% of manufactured feed for Swedish pigs, cattle and chickens was dependent on imported inputs, mainly from Europe, Southeast Asia and South America. Paper III examines ecosystem subsidies to intensive aquaculture in two nations: shrimp production in Thailand and salmon production in Norway. In both countries, aquaculture was shown to rely increasingly on imported subsidies. The rapid expansion of aquaculture turned these countries from fishmeal net exporters to fishmeal net importers, increasingly using inputs from the Southeastern Pacific Ocean.</p><p>As the examined agricultural and aquacultural production systems became globalized, levels of dependence on other nations’ ecosystems, the number of external supply sources, and the distance to these sources steadily increased. Dependence on other nations is not problematic, as long as we are able to acknowledge these links and sustainably manage resources both at home and abroad. However, ecosystem subsidies are seldom recognized or made explicit in national policy or economic accounts. Economic systems are generally not designed to receive feedbacks when the status of remote ecosystems changes, much less to respond in an ecologically sensitive manner. Papers IV and V discuss the problem of “masking” of the true environmental costs of production for trade. One of our conclusions is that, while the ArEAs approach is a useful tool for illuminating environmentally-based subsidies in the policy arena, it does not reflect all of the costs. Current agricultural and aquacultural production methods have generated substantial increases in production levels, but if policy continues to support the focus on yield and production increases alone, taking the work of ecosystems for granted, vulnerability can result. Thus, a challenge is to develop a set of complementary tools that can be used in economic accounting at national and international scales that address ecosystem support and performance.</p><p>We conclude that future resilience in food production systems will require more explicit links between consumers and the work of supporting ecosystems, locally and in other regions of the world, and that food security planning will require active management of the capacity of all involved ecosystems to sustain food production.</p>

In this work, I focus on the propagation of environmental issues through sitcom and comparison of the perception of these topics by Czech and Dutch audiences. I report on the results of focus group research of the American show The Big Bang Theory (2007-2019), from which artefacts were pre-selected with the assistance of thematic analysis. These findings suggest different perception of the environmental contents included in the researched series, the same as the varying perception of hypothetical promotion of the environmental issues in the future series. Generally speaking, the global sample perceives the promotion of environmental issues in popular media positively, though the degree and the form of the accepted usage of these topics vary. Czech audiences perceive the topics more negatively than the Dutch audience, showing a lower sensitivity threshold for a possible attack on their own opinions and identity. The most significant differences were observed in the perception of the concept of nature, the person interested in the environment, and the individual impact on the improvement/deterioration of the environment. A suitable tool for communicating environmental issues in the sitcom is corrective irony (allowing to emphasize the contrast between environmental awareness and personal actions to...

This dissertation is based on the conceptual framework of social metabolism and it applies methods of Material and Energy Flow Analysis and Ecological Footprint. It studies interactions between human activities and natural environment in Czech/Czechoslovak territory from the historical perspective (after the division of Czechoslovakia for Czechia and Slovakia together). The term of social metabolism is a metaphor inspired by biology. Society or human economy similarly to a living organism which extracts materials from the earth, processes biophysical materials to maintain itself and emits its wastes back. So the economic system functions in an analogy to a living organism and those processes are called "social" or "industrial" metabolism. This dissertation comprises seven individual empirical studies: (I) An introduction to a research topic covered in following articles. It is based on the work of leading world environmental historian and it interprets selected Czech realities within the context of the world environmental history. (II) The historical series of MEFA indicators together with ecological footprint. (III) An article which applies the ecological footprint method on the ecological farm in comparison to conventional agriculture in the context of more foreign studies on this topic. (IV) An...

O desenvolvimento sustentável e a própria sobrevivência da humanidade dependem da compatibilização da demanda por recursos energéticos com as limitações ambientais e necessidades humanas. Dessa maneira, torna-se fundamental compreender e mensurar a sustentabilidade energética. Para tanto, esse trabalho vale-se de princípios da economia ecológica e do planejamento integrado de recursos para identificar e analisar os fatores que afetam a sustentabilidade energética de um dado sistema. A partir desses fatores são definidos indicadores de sustentabilidade, os quais compõem uma metodologia concebida para avaliar o grau de sustentabilidade da produção de energia. Tal metodologia é testada em um estudo de caso da matriz elétrica paulista, a qual mostrou um nível próximo da sustentabilidade, mas com a necessidade de aprimoramentos. Por fim, são feitas reflexões sobre a robustez, a flexibilidade e as limitações da metodologia proposta, assim como recomendações para ajustes da composição da matriz estudada com o propósito de torná-la mais sustentável. / Sustainable development and the very survival of humanity depends on the compatibility of the demand for energy resources with environmental constraints and human needs. Thus, it is essential to understand and define metrics for energy sustainability. For that reason, this work draws on principles of ecological economics and integrated resource planning to identify and analyze the factors affecting energy sustainability of a given system. From these factors are defined sustainability indicators, which are the foundations for a methodology designed to assess the degree of sustainability of energy production. The methodology is tested on a case study of the electricity matrix of the State of Sao Paulo, which is close to a sustainable level even though requiring improvements in some aspects. Finally, reflections on the sturdiness, flexibility and limitations of the proposed methodology, as well as recommendations for adjustments in the composition of the case study matrix in order to make it more sustainable are made.

A Contabilidade Financeira busca informações confiáveis que sejam razoavelmente livres de erros, viés e mostrem, fielmente, o que visam representar. A obtenção de valores ambientais com menos viés possíveis, mais acurados e comparáveis poderia, talvez, se constituir em parâmetro para definição de serviços ambientais, ensejar discussões quanto ao tratamento contábil da área do bioma preservado e, também, comercialização de certificado ambiental baseado na preservação do meio ambiente e, de forma geral, servir de subsídios para tomada de decisões empresariais e governamentais. Este trabalho tem por objetivo propor métrica de valoração de Reservas Legais e Áreas de Preservação Permanente em propriedades agrícolas, no seu estado natural, puro e ainda livre dos efeitos das ações humanas. A métrica foi desenvolvida com base no método de Custo de Oportunidade (CO), Contabilidade Emergética e Curva Ambiental de Kuznets (CAK). A referida métrica constitui-se da soma do valor do C.O. ao Valor Total do Bioma (VTB). Porém, o valor do C.O. é descontado pelo risco do negócio analisado. O VTB é estimado pela Contabilidade Emergética, sendo considerada a área do hectare preservado, em RL e/ou APP, e a área remanescente do bioma estudado. Então, o VTB é ponderado pela CAK, esta estimada pela variação dos preços da cultura agrícola analisada. Visando sua validação, estimou-se a área preservada em hectares de Reservas Legais e Áreas de Preservação Permanente de cada bioma terrestre brasileiro referente às dez culturas agrícolas que possuem maior área plantada. Das culturas utilizaram-se os dados sobre os valores brutos de produção, a variação dos preços em média nacional e a extensão territorial das unidades federais brasileiras. Utilizaram-se também os dados dos biomas terrestres brasileiros referentes às suas áreas totais e áreas remanescentes preservadas. Informações estas obtidas em consulta ao site do IBGE, IBAMA e Agrolink. Na sequência, foi aplicada a métrica para valorar os biomas preservados em nível nacional e sobre cinco culturas reais de dados coletados de empresas agrícolas. Entre os resultados obtidos com a métrica, o maior valor foi para o bioma Pampas sobre a cultura agrícola de mandioca no ano de 2010 (R$1.754,03) e o menor para o bioma Cerrado sob a cultura de trigo no ano de 2005 (R$ 53,67). A tentativa era expressar os valores, por meio da métrica proposta, que diferentes indivíduos atribuiriam aos biomas e, com isso, estimular a preservação ao viabilizar um mercado que remunere os preservadores. Trata-se de uma proposta inovadora, e os valores podem ser utilizados para auxiliar legisladores a viabilizar a regulamentação das legislações que preveem a concessão de compensações pela prestação de serviços ambientais, além de servirem como instrumentos de gestão ambiental interna às empresas, principalmente, pelo reconhecimento do potencial de benefícios dos recursos sob suas responsabilidades. / The Financial Accounting search reliable information that is reasonably free errors, bias and show, faithfully, what aim at represents. Obtaining environmental values with less bias possible, more accurate and comparable could, perhaps, constitute parameter for defining environmental services, give rise to discussions about the accounting treatment of the biome area preserved and, also, marketing of environmental certificate based on preservation the environment and, in general way, serve as support for business decisions take and government. This work aims to propose metric valuation of Legal Reserves and Permanent Preservation Areas on agricultural properties, in their natural state, pure and yet free from the effects of human actions. The metric was developed based on the method of Opportunity Cost (OC), Accounting Emergy and Environmental Kuznets Curve (EKC). The metric constitutes themselves from the sum of the value of O.C. to the Biome Total Value (BTV). However, the value of O.C. is discounted by business risk analyzed. The BTV is estimated by Emergy Accounting, considering the area hectare preserved in RL and / or APP, and the remaining area of the biome studied. So, the VTB is weighted by EKC, estimated by this change in the prices of agricultural crops analyzed. Aiming validation, estimated the preserved area in hectares of Legal Reserves and Permanent Preservation Areas of each terrestrial biome Brazilian referring to the ten crops that have greater acreage. From the cultures used the data on gross production, the price variation in average national and territorial scope of the federal units of Brazil. Were also used data from the Brazilian terrestrial biomes with respect to their total areas and remaining areas preserved. Information they obtained by consulting the IBGE site, IBAMA and Agrolink. Further, we applied the metric to value biomes preserved in national and over five real cultures data collected from agricultural enterprises. Between the results obtained with the metric, the highest value was for the Pampas biome on the cassava crop in 2010 (R $ 1,754.03) and lowest for the Cerrado biome in the wheat crop in 2005 (R $ 53.67). The attempt was to express the values, through the proposed metric, which would assign individuals on different biomes and, thereby, encouraging the preservation by allowing a market to remunerate preservers. This is an innovative proposal, and the values can be used to assist legislators to enable the regulation of the laws that predict the granting compensation the provision of environmental services, besides serving as instruments of internal environmental management firms, mainly, by recognition of the potential benefits of the resources under their responsibility.

O desenvolvimento sustentável e a própria sobrevivência da humanidade dependem da compatibilização da demanda por recursos energéticos com as limitações ambientais e necessidades humanas. Dessa maneira, torna-se fundamental compreender e mensurar a sustentabilidade energética. Para tanto, esse trabalho vale-se de princípios da economia ecológica e do planejamento integrado de recursos para identificar e analisar os fatores que afetam a sustentabilidade energética de um dado sistema. A partir desses fatores são definidos indicadores de sustentabilidade, os quais compõem uma metodologia concebida para avaliar o grau de sustentabilidade da produção de energia. Tal metodologia é testada em um estudo de caso da matriz elétrica paulista, a qual mostrou um nível próximo da sustentabilidade, mas com a necessidade de aprimoramentos. Por fim, são feitas reflexões sobre a robustez, a flexibilidade e as limitações da metodologia proposta, assim como recomendações para ajustes da composição da matriz estudada com o propósito de torná-la mais sustentável. / Sustainable development and the very survival of humanity depends on the compatibility of the demand for energy resources with environmental constraints and human needs. Thus, it is essential to understand and define metrics for energy sustainability. For that reason, this work draws on principles of ecological economics and integrated resource planning to identify and analyze the factors affecting energy sustainability of a given system. From these factors are defined sustainability indicators, which are the foundations for a methodology designed to assess the degree of sustainability of energy production. The methodology is tested on a case study of the electricity matrix of the State of Sao Paulo, which is close to a sustainable level even though requiring improvements in some aspects. Finally, reflections on the sturdiness, flexibility and limitations of the proposed methodology, as well as recommendations for adjustments in the composition of the case study matrix in order to make it more sustainable are made.

[Truncated abstract] The application of reductionism, breaking down problems to simpler components that can be solved and then aggregating the results, is one of the bases of classical science. However, living organisms, ecosystems, social and economic structures are complex systems, characterised by non-linear interactions between their elements and exhibit emergent properties that are not directly traceable to their components. Sustainability assessment frameworks oversimplify system interactions, achieving limited predictive capacity and causing managerial behavior that may reduce system's ability to adapt to external disturbance. Intrigued by the importance of complexity, we explore the central theme of how complex thinking can influence the understanding and progress towards sustainability. The purpose is to conceptualize the relationship of key terms (such as sustainability, functionality and resilience), and consecutively develop new or adjust existing sustainability frameworks to take into account complex systems interactions. We aim at developing theory and frameworks that can be used to raise awareness of the pitfalls of the growth paradigm and direct towards modest positions when managing complex systems. We seek to define the structural elements that influence system adaptive capacity, allowing identification of early signs of system rigidity or vulnerability and the development of knowledge and techniques that can improve our predictive and managerial ability. The focus has been on a variety of system scales and dynamics. At the collective community level, a number of stakeholder engagement practices and frameworks are currently available. However, there is limited awareness of the complexity challenges among stakeholders, who are commonly directed to a triple bottom line analysis aiming at maximizing a combination of outputs. An attempt is conducted to measure the functionality of the processes underlying a standing stock, in contrast to sustainability measures that only assess the variations of the standing stock itself. We develop the Index of Sustainable Functionality (ISF), a framework for the assessment of complex systems interactions within a large-scale geographic domain and apply it to the State of Western Australia. '...' Finally, we focus on smaller systems scales and develop a methodology for the calculation of Product Ecological Footprint (PEF) including elements from the accounting method of activity based costing. We calculate PEF for three apple production systems and identify significant differences from first stage calculations within the same industry. Cross-industry application will provide a practical way to link individuals' consumption with their ecological impact, reduce misperceptions of products' ecological impacts and develop a market-driven approach to internalizing environmental externalities. At the firm level PEF can be compared with investment costs, resulting in the opportunity to optimize both functions of financial cost and ecological impact in decision making. We have developed methods for incorporating complexity in sustainability assessment frameworks. Further work is required in testing and validating these methodologies at multiple system scales and conditions. Integrating such tools in decision making mechanisms will enhance long-term management of socioecological systems performance.

永續發展為一個多樣性的概念，包括生態、經濟、社會、政治、科技等不同領域，皆對永續發展有不同角度的切入與解讀；在各國均以永續發展做為環境管理與資源規劃的主要內涵時，如何轉換永續發展概念為實際衡量與操作指標，以作為邁向永續之政策基礎，永續性衡量工具之重要性不言可喻；而利用許多不同的方法來衡量永續發展，每一種衡量方法則提供了不同的訊息給有志於改善經濟體永續性的決策者。展望二十一世紀，台灣都市人口佔總人口比率將高達87%，都市化現象將更明顯，國民對生活環境品質水準之要求亦將隨之提昇；而台北市為台灣的首善之都，人口密度高達每平方公里9,714人，近年來人口成長趨勢雖然趨於緩和，但是高密度的人口聚集已為台北市帶來基礎建設及環境品質的負面影響。如何運用永續性衡量工具衡量人類生活的重心－都市，建立監測機制與研擬引導都市發展之策略，儼然成為一刻不容緩的課題。 基於資料取得與相關研究的經驗，本研究提出四個衡量台北市永續性的分析工具，所選擇的方法包括綜合面向指標的「永續性指標」(sustainability indicator)、環境向度的「生態足跡」(ecological footprint)分析與「環境空間」(enviromental space)指標，以及生態經濟面向的「生態效率」(eco-efficiency)，多面向地衡量台北市的永續性趨勢，以提供都市永續發展的決策預警、決策檢討與決策引導之功能。 本研究內容主要分成四個部份：第一部份介紹永續發展概念之意涵與都市永續性之操作性定義及要件；第二部份描述本文所使用的四個工具之方法論，先從文獻回顧中歸納出四個衡量工具的理論基礎，繼而尋求適合本研究領域的架構與指標內涵；第三部份則依所建立的理論基礎與架構，進行台北市的永續性衡量之實證分析；最後以台北市的實證分析結果，對所選擇的永續性衡量工具進行綜合分析討論，探討其在永續性衡量上的適用性與限制條件。 研究分析結果顯示，在永續性指標方面，台北市在生活舒適、交通便捷與教育文化方面有些許的改善，而社會安全一項則惡化；生態足跡分析結果，台北市生態足跡有逐年擴大的趨勢，所產生的生態赤字也相對增加，意謂著台北市利用消費密集的特性，挪用了其他國家或地區的生態生產力土地面積逐年擴增；環境空間的分析，則顯示了台北市在能源環境空間與陸域資源環境空間屬於不永續的情況，而為達永續發展目的所必須進行「減量配額」則明顯高於台灣與歐洲；生態效率觀念則提供了台北市在都市政策制定的基準，以及衡量永續經濟發展的新思維。

工業革命後傳統經濟發展模式成功地使經濟活動與經濟成長成為世界上大多數國家的政治議題，但大量提高產業生產的結果使得地球上的資源消耗與廢棄物製造量所造成的生態耗損速度遠超過自然再生速度。另一方面，由於「科技」與「貿易」的影響，生物新陳代謝加諸於人類的負荷將透過產業的新陳代謝更形擴大，在高度工業化國家物質消費程度與形式更受到消費主義的鼓舞，形成毫無節制的消費與浪費。近年來台灣地區加入世界貿易組織（World Trade Organization， WTO）引起廣泛的環境與貿易議題的討論，其中農業議題尤為顯著，究竟台灣地區加入WTO後之農地轉用政策是否可使土地資源利用達到永續經營之目標，引發本研究之研究動機。 本研究以生態足跡分析及貿易與永續發展相關理念為基礎，以1991到1996年台灣地區的農業產業做為研究的時空範圍，進行台灣地區耕地與牧草地生態足跡之實證計算並加以分析。在理論方面，首先就永續性之整體面向及各別領域面向推論出生態經濟學之定義符合整體面向之強永續性觀念；其次重新思考人類容受力定義，非以支持最大人口數（單位：人╱土地）而是轉向計算某一族群在持續基礎下生產所有消費物質及消化所有廢棄物所需的土地及水域面積（單位：土地╱人）之生態足跡（ecological footprint）觀念；在貿易與永續發展理念推論部份，則以IISD（1994、1995）、ICTSD（1995）及Cosbey（1998）等之相關研究作為理論基礎；最後，結合生態足跡、貿易及永續發展三者之理論。 在實證方面，本研究修正國內外多項研究後，重新定義符合台灣地區之生態足跡計算項目，並計算台灣地區1991到1996年農業（耕地與牧草地）之生態足跡，得知台灣地區農業消費中佔耕地生態足跡比例較重的項目分別為稻米、其他作物、豆類、種子油及進出口紗布、紡織製成品、成衣及服飾品及鞋類等五項，而影響台灣地區農業之牧草地生態足跡面積較大的因子包括羊毛及皮革、獸皮兩項；將這些項目與行政院農委會WTO農業因應對策項目對照後，發現影響最大的兩項分別為稻米及農園特產之豆類；因此本研究就稻米與豆類兩項產業加入WTO前後對台灣地區生態足跡、生態標竿、及生態赤字之影響進行進一步研究，並分析該兩項產業完全轉用為非農業使用與完全無轉用對生態足跡之影響，以評估該兩項產業加入WTO是否為一永續性策略。 本研究的研究結果發現，不論是稻米或豆類，其生態足跡與耕地生態標竿間的差距在無論有無造成農地轉用的情形下，都對該值影響不大，亦即不因加入WTO而有所改變。就生態足跡的理念觀之，若加入WTO使進口量增加的結果造成產業生產力提昇、進口產業以內銷為主、對國內生產量影響程度愈大，相對生態足跡面積降低程度愈大者及農地轉用為同類別使用等這四種影響的情形之下，則台灣地區加入WTO可視為永續性策略。 / After the Industrial Revolution, traditional economic development models have successfully made economic activities and economic growth a political issue for most countries around the world. However, with the greatly enhanced industrial productivity has come instensified uses of the resources of the earth, and the ecological depletion rate resulting from solid waste volumes has far exceeded nature's regenerative capacities. On the other hand, due to the influence of technology and trade, the natural biological metabolism, already carrying a human load, is being expanded and intensified by the industrial metabolism. In highly industrialized countries, the degree and form of material consumption has been inspired by consumerism, engendering virtually unlimited consumption and waste. In recent years, while Taiwan has been seeking to join the World Trade Organization (WTO), there have been pervasive discussions on the subject of trade and the environment. Among these, agricultural issues have been prevalent. Should Taiwan join the WTO, will the farmland transformation policy permit land resource usage to meet the objectives for sustainable development? This question is the motivation for this dissertation. This dissertation is based on the ecological footprint analysis, along with trade and sustainable development theories. The timeframe for reseach extends from 1991 to 1996, focussing on Taiwan's agricultural industry. Ecological footprint analyses were calculated based on factual evidence/data from Taiwan's arable land and pasture land. In terms of applied theories, first, considering both the comprehensive entirety as well as individual discrete segments, we conclude that the definitions of eco-economics are in agreement with the concept of the strong sustainability. Next, we reconsider the definition of human carrying capacity, not basing this concept on the support of a maximum population base (Unit: per capita/ha), but rather on the calculation of the land and water needed by a certain group (Unit: ha/per capita), existing on a continuous base, to effectively produce all consumer materials and absorb all solid waste. In respect to trade and sustainable development theories, we use related studies such as IISD（1994、1995）, ICTSD（1995）, and Cosbey（1998） to be our theoretical base. Finally, we combine the three theoretical constructs, namely the concept of the ecological footprint, trade, and sustainable development. In carrying out our research on factual evidence/data, this dissertation modifies research previously conducted by a number of researchers. We redefine the calculation parameters for Taiwan's ecological footprint, finely calculating the ecological footprint for the agriculture industry (arable land and pasture land) for Taiwan in the 1991 to 1996 period. We learn that in terms of agricultural usage and consumption in Taiwan, the five key items with the largest shares of the arable land footprint are: rice, other cereals, pulses, seed oils, and import/export textile yarn, fabrics, articles of apparel and clothing accessories, footwear. Factors demonstrating the greatest influence on Taiwan's pasture land ecological footprint are: wool and leather, and animal hides. When we compare these findings with policies of the Council of Agriculture for entering into the WTO, we confirm that rice and pulses are indeed the two items of greatest importance. Therefore, this dissertation will focus on the rice and pulses industry before and after entering into the WTO, and on their influence on Taiwan's ecological footprint, ecological benchmark, and ecological deficit. We will also analyze possible consequences should these two industries be transformed to non-agricultural uses, or, if no such changes are instituted, what the consequences will be for Taiwan's ecological footprint. Based on these findings, we will evaluate whether the allowance of entry of these two industries into the WTO is a sustainable strategy. Our research findings reveal that, whether or not we transform farmlands from the rice and pulses industries, there will be no significant impacts on the anticipated gap between the ecological footprint and the arable land ecological benchmark. This means there will be no significant change should there be entering into the WTO. Thus, from the perspective of ecological footprint analysis, if we join the WTO and the result is an increase in imports, this will enhance our industrial productivity; imported items will be fully consumed domestically; the greater the influence on domestic production volumes the greater the decrease in the ecological footprint area; and, farmlands will be transformed to non-agricultural uses. Because of the above four factors, it can be said that joining the WTO will probably be considered as a policy of sustainability. 第一章 緒論 1 第一節 研究背景 1 第二節 研究目的與內容 5 第三節 研究流程與問題限制 9 第二章 基本理念與文獻評析 13 第一節 永續性理念及知識性工具 13 第二節 永續發展評估工具－生態足跡分析 26 第三節 貿易與永續發展關係之研究 44 第四節 生態足跡的比較利益基礎 57 第五節 永續發展與WTO環境與貿易議題之探討 63 第三章 永續發展與WTO相關農業議題探討 69 第一節 台灣地區加入WTO各項農業議題之協定 69 第二節 台灣地區加入WTO各項農業議題之對策 84 第三節 台灣地區加入WTO農業議題對永續發展之影響 94 第四章 台灣地區農業生態足跡分析實證研究 99 第一節 生態足跡分析架構之建立 99 第二節 台灣地區歷年農業生態足跡評估 109 第三節 台灣地區農業生態標竿之建立與生態足跡分析結果 118 第五章 台灣地區稻米及農園特產之生態足跡與WTO農業相關議題之探討.124 第一節 台灣地區農業生態足跡與WTO農業議題對應項目分析 124 第二節 台灣地區因應加入WTO農業議題對應項目與台灣地區稻米及農園特產生態足跡影響因子分析 130 第六章 加入WTO對台灣地區永續發展影響之探討 142 第一節 以生態足跡觀點解讀加入WTO是否為永續性策略 142 第二節 以貿易與永續發展原則檢視台灣地區加入WTO是否為永續性策略 146 第七章 結論與建議 149 第一節 結論 149 第二節 後續研究建議 154

Modern food production is a complex, globalized system in which what we eat and how it is produced are increasingly disconnected. This thesis examines some of the ways in which global trade has changed the mix of inputs to food and feed, and how this affects food security and our perceptions of sustainability. One useful indicator of the ecological impact of trade in food and feed products is the Appropriated Ecosystem Areas (ArEAs), which estimates the terrestrial and aquatic areas needed to produce all the inputs to particular products. The method is introduced in Paper I and used to calculate and track changes in imported subsidies to Swedish agriculture over the period 1962-1994. In 1994, Swedish consumers needed agricultural areas outside their national borders to satisfy more than a third of their food consumption needs. The method is then applied to Swedish meat production in Paper II to show that the term “Made in Sweden” is often a misnomer. In 1999, almost 80% of manufactured feed for Swedish pigs, cattle and chickens was dependent on imported inputs, mainly from Europe, Southeast Asia and South America. Paper III examines ecosystem subsidies to intensive aquaculture in two nations: shrimp production in Thailand and salmon production in Norway. In both countries, aquaculture was shown to rely increasingly on imported subsidies. The rapid expansion of aquaculture turned these countries from fishmeal net exporters to fishmeal net importers, increasingly using inputs from the Southeastern Pacific Ocean. As the examined agricultural and aquacultural production systems became globalized, levels of dependence on other nations’ ecosystems, the number of external supply sources, and the distance to these sources steadily increased. Dependence on other nations is not problematic, as long as we are able to acknowledge these links and sustainably manage resources both at home and abroad. However, ecosystem subsidies are seldom recognized or made explicit in national policy or economic accounts. Economic systems are generally not designed to receive feedbacks when the status of remote ecosystems changes, much less to respond in an ecologically sensitive manner. Papers IV and V discuss the problem of “masking” of the true environmental costs of production for trade. One of our conclusions is that, while the ArEAs approach is a useful tool for illuminating environmentally-based subsidies in the policy arena, it does not reflect all of the costs. Current agricultural and aquacultural production methods have generated substantial increases in production levels, but if policy continues to support the focus on yield and production increases alone, taking the work of ecosystems for granted, vulnerability can result. Thus, a challenge is to develop a set of complementary tools that can be used in economic accounting at national and international scales that address ecosystem support and performance. We conclude that future resilience in food production systems will require more explicit links between consumers and the work of supporting ecosystems, locally and in other regions of the world, and that food security planning will require active management of the capacity of all involved ecosystems to sustain food production.