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1.
Vamilson Prudêncio da Silva Hayo M.G. van der Werf Airton Spies Sebastião Roberto Soares 《Journal of environmental management》2010,91(9):1831-1839
Soybean production and its supply chain are highly dependent on inputs such as land, fertilizer, fuel, machines, pesticides and electricity. The expansion of this crop in Brazil in recent decades has generated concerns about its environmental impacts. To assess these impacts, two representative chains supplying soybeans to Europe were identified: Center West (CW) and Southern (SO) Brazil. Each supply chain was analyzed using Life Cycle Assessment methodology. We considered different levels of use of chemical and organic fertilizers, pesticides and machinery, different distances for transportation of inputs and different yield levels. Because transportation contributed strongly to environmental impacts, a detailed study was performed to identify the routes used to transport soybeans to seaports. Additionally, we considered different levels of land occupation and land transformation to represent the impact of deforestation in the CW region. Environmental impacts were calculated for 1000 kg of soybean up to and including the delivery to Europe at the seaport in Rotterdam, at 13% humidity. Overall results showed that the impacts are greater for CW than for SO for all impact categories studied, including acidification (7.7 and 5.3 kg SO2 eq., respectively), climate change (959 and 510 kg CO2 eq.), cumulative energy demand (12,634 and 6,999 MJ) and terrestrial ecotoxicity (4.9 and 3.1 kg 1,4-DCB eq.), except eutrophication and land occupation. The same trend was observed for the crop-production stage. Efforts to reduce chemical fertilizers and diesel consumption can reduce CO2 emissions. Although deforestation for crop production has decreased in recent years, the contribution of deforestation to climate change and cumulative energy demand remains significant. In the CW scenario deforestation contributed 29% to climate change and 20% to cumulative energy demand. Results also showed that although there are different transportation options in Brazil, the current predominance of road transport causes severe environmental impacts. In CW, road transport contributed 19% to climate change and 24% to cumulative energy demand, while in SO it contributed 12% and 15% to these impacts, respectively. Improvements in the logistics of transportation, giving priority to rail and river transports over road transport, can contribute significantly to reducing greenhouse gas emissions and decreasing energy use. Future studies involving Brazilian soybeans should take into account the region of origin as different levels of environmental impact are predicted. 相似文献
2.
中国正在积极地谋求低碳化转型,政府承诺落实2030年前碳达峰的目标并努力争取2060年实现碳中和。碳强度控制是实现CO_2减排的关键制度,而电气化又与碳排放和经济增长都具有紧密的联系。因此,研究电气化与碳强度的关系对政策设计和制定碳强度控制政策具有重要意义。基于电气化与碳强度关系的现有研究,本文提出了碳排放强度随着电气化水平提高先上升后下降的环境库兹涅茨曲线(EKC)关系假设。本文以中国1997—2016年30个省份的面板数据为对象进行假设检验,并使用空间杜宾模型验证空间效应对结果的影响。结果显示,我国电气化与碳强度之间确实存在显著的倒U形的EKC关系,并且这一结论在考虑空间因素后仍然稳健。EKC曲线的拐点在不考虑空间因素的情况下位于电气化水平为10.52%的位置,在考虑了空间因素后略微后移到10.81%。截至2016年,所有省份的电气化水平均处于EKC拐点的右侧,即电气化水平的提高将对碳强度下降起到显著的促进作用。最后,针对电气化与碳强度关系的一般与空间特征,本文对电气化发展提出了政策建议。 相似文献
3.
生态资产是人类赖以生存的基本条件,当前研究尚未充分关注人类活动对生态资产的影响。本文从社会经济系统的全产业链视角出发,探讨产业链不同环节的生产消费活动对生态资产的影响以及所对应的不同政策内涵。分析结果表明,产业链的不同环节对应不同政策内涵,识别不同环节上的关键区域/行业能够为不同类型的政策决策指出着力点。初始投入环节的核算服务于人力资本投入行为的调控;初始生产环节的核算服务于末端控制手段,包括资源节约与污染物减排;中间生产环节和末端生产环节的核算服务于提升生产效率的政策手段;最终消费环节的核算服务于消费行为优化。最终得出应该从全产业链视角实施多环节生态资产管理的结论,并提出,为了从全产业链视角实施生态资产管理,应考虑建立一套标准化、全产业链视角的生态资产需求核算框架,建设支持全产业链视角核算生态资产需求的基础数据库,将全产业链视角管理生态资产的思维融入政策决策等建议。 相似文献
4.
食物生产不仅依赖水资源,同时产生大量二氧化碳排放,这种资源环境影响存在于食物系统整个产业链。为促进食物系统节水降碳,本文构建了包含5大类共23种具体食物部门的混合生命周期评价模型,对各类食物系统的完全水资源消耗和二氧化碳排放进行了核算与比较。结果表明:(1)不同食物的水资源消耗和二氧化碳排放差异明显,动物性食物的平均水资源消耗和二氧化碳排放强度分别为植物性食物的1.9~15.0倍和1.9~2.7倍;(2)食物系统直接和间接水资源消耗占比较为接近,但二氧化碳排放主要源自上游产业链的间接排放,占比高达80.9%;(3)食物系统间接水资源消耗主要来自农业部门,而间接碳排放主要来自电力生产和供应业、基础化工原料制造业、非金属矿产品行业和交通运输业;(4)从营养元素供给看,动物性食物提供蛋白质和脂肪的资源环境影响高于植物性食物,蔬菜和主食分别在提供维生素C和碳水化合物上具有最小的环境成本。基于本文结果,食物系统节水应主要提高生产环节用水效率,而降碳则主要依靠上游产业减排,特别是发电和化肥生产等行业的协同节水减碳潜力。同时,本文结果也可为未来基于环境影响制定膳食指南提供数据支撑。 相似文献
5.
A framework to assess regional environmental impacts of dedicated energy crop production 总被引:2,自引:0,他引:2
Numerous studies have evaluated air quality and greenhouse gas mitigation benefits of biomass energy systems, but the potential environmental impacts associated with large-scale changes in land-use patterns needed to produce energy crops have not been quantified. This paper presents a framework to assess the potential soil, water, and biodiversity impacts that may result from the large-scale production of dedicated energy crops. The framework incorporates producer economic decision models with environmental models to assess changes in land use patterns and to quantify the consequent environmental impacts. Economic and policy issues that will affect decisions to produce energy crops are discussed. The framework is used to evaluate erosion and chemical runoff in two Tennessee regions. The analysis shows that production of dedicated energy crops in place of conventional crops will significantly reduce erosion and chemical runoff. 相似文献
6.
Joris Koornneef Tim van Keulen Andr Faaij Wim Turkenburg 《International Journal of Greenhouse Gas Control》2008,2(4):448
In this study the methodology of life cycle assessment has been used to assess the environmental impacts of three pulverized coal fired electricity supply chains with and without carbon capture and storage (CCS) on a cradle to grave basis. The chain with CCS comprises post-combustion CO2 capture with monoethanolamine, compression, transport by pipeline and storage in a geological reservoir. The two reference chains represent sub-critical and state-of-the-art ultra supercritical pulverized coal fired electricity generation. For the three chains we have constructed a detailed greenhouse gas (GHG) balance, and disclosed environmental trade-offs and co-benefits due to CO2 capture, transport and storage. Results show that, due to CCS, the GHG emissions per kWh are reduced substantially to 243 g/kWh. This is a reduction of 78 and 71% compared to the sub-critical and state-of-the-art power plant, respectively. The removal of CO2 is partially offset by increased GHG emissions in up- and downstream processes, to a small extent (0.7 g/kWh) caused by the CCS infrastructure. An environmental co-benefit is expected following from the deeper reduction of hydrogen fluoride and hydrogen chloride emissions. Most notable environmental trade-offs are the increase in human toxicity, ozone layer depletion and fresh water ecotoxicity potential for which the CCS chain is outperformed by both other chains. The state-of-the-art power plant without CCS also shows a better score for the eutrophication, acidification and photochemical oxidation potential despite the deeper reduction of SOx and NOx in the CCS power plant. These reductions are offset by increased emissions in the life cycle due to the energy penalty and a factor five increase in NH3 emissions. 相似文献
7.
Pham Van Hoi Arthur P.J. Mol Peter J.M. Oosterveer 《Journal of environmental management》2009,90(2):380-388
In many developed countries private arrangements have emerged in food governance. Following limited successes of state regulation, market actors and mechanisms are increasingly included in the environmental and safety governance of domestic and global food chains and networks. But do such private governance arrangements also work in domestic markets in developing countries? Pesticide use in vegetable supply is taken as a case to explore the role of market actors and dynamics in food safety governance in Vietnam. The so-called safe vegetable production system in the Red River Delta, introduced 10 years ago as a domestic alternative to conventional vegetable production, is analyzed through detailed monitoring of farmers, surveys of retailers and consumers, and in-depth interviews with state officials and vegetable traders. The paper finds limited success of this low-pesticide vegetable production, distribution and consumption system. This private arrangement in food governance lacked trust from market actors (especially consumers), and was short of an active state that organized transparency and got market actors involved. As such, market governance in food safety needs to be strong. 相似文献
8.
Food Supply Chain Governance And Public Health Externalities: Upstream Policy Interventions And The UK State 总被引:1,自引:0,他引:1
David Barling 《Journal of Agricultural and Environmental Ethics》2007,20(3):285-300
Contemporary food supply chains are generating externalities with high economic and social costs, notably in public health
terms through the rise in diet-related non-communicable disease. The UK State is developing policy strategies to tackle these
public health problems alongside intergovernmental responses. However, the governance of food supply chains is conducted by,
and across, both private and public spheres and within a multilevel framework. The realities of contemporary food governance
are that private interests are key drivers of food supply chains and have institutionalized a great deal of standards-setting
and quality, notably from their locations in the downstream and midstream sectors. The UK State is designing some downstream and some midstream interventions to ameliorate the public health impacts of current food consumption patterns in England. The UK State has not
addressed upstream interventions towards public health diet at the primary food production and processing stages, although traditionally it
has shaped agricultural policy. Within the realities of contemporary multilevel governance, the UK State must act within the
contexts set by the international regimes of the Common Agricultural Policy and the World Trade Organization agreements, notably
on agriculture. The potential for further upstream agricultural policy reform is considered as part of a wider policy approach
to address the public health externalities issuing from contemporary food supply chains within this multilevel governance
context. 相似文献
9.
Growing dissatisfaction with the globalised food system, articulated on the behalf of both producers and consumers, has caused a variety of public debates surrounding the ethics of food production and consumption to become increasingly visible in society over the last two decades. Simultaneously, farmers’ markets (FMs) and other forms of direct marketing have experienced a noteworthy increase in participants, indicating an emerging demand for an alternative to conventional food networks, alternatives that are often perceived as providing a more just and moral relationship to food production and consumption. This study examines consumer and producer motivations for participation in FMs and opinions towards conventional and alternative agriculture in order to elucidate what (if any) values and morals are shared among producers and consumers. This study draws upon the theoretical framework of moral economy to understand whether these shared values suggest FM participants are working to co-create an alternative economy based on “moral” principles such as fairness, justice, and reciprocity. This mixed-methods study consists of consumer surveys (N?=?377) and semi-structured interviews with producers (N?=?17) from five FMs in the state of Delaware. The results suggest that producer and consumer motivations to participate in FMs, particularly a shared emphasis on social value, are indicative of a sense of moral economy. However, this moral economy is complicated by tension towards consumers and the alternative food movement more generally expressed on behalf of producers. 相似文献
10.
Communicating the process quality of ethically produced food effectively is of highest interest to policy makers, organizations, retailers and producers in order to enhance ethical food production and increase ethical label use. The objective of this paper is to unveil the effectiveness of different communication treatments in regard to changing purchase behavior of different consumer groups. Different communication material for beef produced according to consumer expectations was compiled and applied in a consumer survey—incorporating a choice experiment and a questionnaire—with 676 respondents in three cities of Germany. A Latent Class Mixed Logit Model was basis to identify different consumer segments and their response to the different communication treatments. The effects of different communication treatments unveil the importance to address information in an objective manner. Target groups could be enlarged through the assessment of clear, objective information. Moreover, most consumers were more likely to refrain from choosing a cheap beef product from conventional, barn-based rearing. Hence, consumers might be interested in reducing their overall consumption of beef and prefer the consumption of high value ethical beef with less frequency. Producers, market actors and policy makers should realize that a high share of consumers, not only smaller target groups, value ethical food and may be ready to change their consumption habits, if they are adequately informed. 相似文献
11.
David Browne Bernadette O'Regan Richard Moles 《Journal of Environmental Planning and Management》2008,51(3):447-470
The objective of this paper is to compare the carbon emissions produced as a result of product consumption by the residents of an Irish city-region, that is Limerick City and its environs. The resulting carbon footprints are used to compare imports of food items, manufactured products and construction materials with domestic production as well as changes between 1996 and 2002. The total ecological footprints (EF) associated with product consumption are also calculated by aggregating the theoretical land required to sequester carbon emissions and the terrestrial land area appropriated for agricultural production and industrial activity. It is suggested that this approach be used to allocate producer or consumer responsibility for environmental impacts from trade. 相似文献
12.
Alejandro Gallego Almudena HospidoMaría Teresa Moreira Gumersindo Feijoo 《Resources, Conservation and Recycling》2011,55(11):1005-1012
Alfalfa is the major forage crop produced in temperate regions worlwide. Although this crop is currently used mainly for producing high-value livestock feed, its application for bioenergy production is a recent focus of interest. Even though it is not mandatory, alfalfa is normally dried in order to improve the quality of the final product. In this study, Life Cycle Assessment (LCA) was used to quantify the environmental impacts linked to alfalfa production in the major cultivation zone in Spain (Ebro Valley), including field activities, dehydration and transport to farms for livestock feeding. In addition, the identification of the most relevant processes contributing to the environmental impact and the potential improvements actions were also defined as objectives. Inventory data were obtained mainly from interviews with farmers complemented with published literature and comments from experts.LCA results were obtained for global warming, acidification, eutrophication, photochemical oxidant formation, land use, non-renewable cumulative energy demand and human, terrestrial and aquatic ecotoxicities. Within the life cycle of alfalfa, the dehydration process, production of phosphate fertilizer, application of nitrogen fertilizers and pesticides, water consumption and final transport to the consumer (by road and ship) were identified as hot spots. Based on these, some improvement measures were proposed and evaluated: (i) reduction of the moisture content of alfalfa and the use of a higher percentage of biomass for combustion in the dehydration process, (ii) no application of nitrogen fertilizer in maintenance years and (iii) use of more efficient trucks for transport. Their implementation would produce significant reduction of eutrophication, global warming, acidification, non-renewable cumulative energy demand and, to a lesser extent, photochemical oxidation formation and human toxicity impacts. 相似文献
13.
Our growing demand for meat and dairy food products is unsustainable. It is hard to imagine that this global issue can be solved solely by more efficient technologies. Lowering our meat consumption seems inescapable. Yet, the question is whether modern consumers can be considered as reliable allies to achieve this shift in meat consumption pattern. Is there not a yawning gap between our responsible intentions as citizens and our hedonic desires as consumers? We will argue that consumers can and should be considered as partners that must be involved in realizing new ways of protein consumption that contribute to a more sustainable world. In particular the large food consumer group of flexitarians offer promising opportunities for transforming our meat consumption patterns. We propose a pragmatic approach that explicitly goes beyond the standard suggestion of persuasion strategies and suggests different routes of change, coined sustainability by stealth, moderate involvement, and cultural change respectively. The recognition of more routes of change to a more plant-based diet implies that the ethical debate on meat should not only associate consumer change with rational persuasion strategies and food citizens that instantiate “strong” sustainable consumption. Such a focus narrows the debate on sustainable protein consumption and easily results in disappointment about consumers’ participation. A more wide-ranging concept of ethical consumption can leave the negative verdict behind that consumers are mainly an obstacle for sustainability and lead to a more optimistic view on modern consumers as allies and agents of change. 相似文献
14.
Environmental supply chain is a desirable alternative to traditional supply chain due to new and stricter environmental regulations by local governments and increasing consumer awareness towards environmental issues. The two most common types of environmental supply chains are reverse supply chains and closed-loop supply chains. In reverse or closed-loop supply chains, collected used products are subjected to one of four recovery options, viz., reuse, recycling, remanufacturing or disposal. Regardless of the chosen recovery option, all products are disassembled up to some level. However, there is a high level of uncertainty associated with the disassembly yield due to non-functional and/or missing components. Sensor embedded products (SEPs) is a viable approach to cope with this uncertainty since they involve sensors which can detect non-functional and/or missing components prior to disassembly. This study presents a quantitative assessment of the impact of SEPs on the various performance measures of a kanban-controlled disassembly line. First, separate design of experiments studies based on Orthogonal Arrays are carried out for conventional products and SEPs. Then, the results of paired t-tests comparing the two cases based on different performance measures are presented. 相似文献
15.
Christine Wallgren 《Local Environment》2013,18(2):233-251
Abstract This study compares energy use for food transport to a farmers' market in Sweden with energy use for transport in the conventional food system. The farmers' market was investigated through data sampling from on-site investigations. The conventional food system was studied with the aid of life cycle assessments reported in the literature. Overall, the study found no significant differences in levels of energy use for transport to the farmers' market compared with the conventional food system. For certain products, such as fresh fruits and vegetables, transport-related energy use was much lower in the local system although the season in Sweden for this kind of product is restricted to two or three months at the end of the summer. However, there is considerable potential to increase energy efficiency in local food systems by organizing the selling in new ways and by using more energy efficient vehicles. 相似文献
16.
Johan De Tavernier 《Journal of Agricultural and Environmental Ethics》2012,25(6):895-907
Labeling of food consumption is related to food safety, food quality, environmental, safety, and social concerns. Future politics of food will be based on a redefinition of commodity food consumption as an expression of citizenship. “Citizen-consumers” realize that they could use their buying power in order to develop a new terrain of social agency and political action. It takes for granted kinds of moral selfhood in which human responsibility is bound into human agency based on knowledge and recognition. This requires new kinds of food labeling practices. Existing research on consumer’s preferences often fails to recognize the full complexity of the motivations and intentions through which the identity of the moral self is built up in relation to food consumption practices. For citizens, not only food production practices matter but also the impact of what we eat on who we are and the ecological foot print of our food stuff. Two major drivers for this are the idea that we ourselves have to take care of our own bodies (“We are what we eat”) and that we are responsible for Planet Earth. Since both obesity and climate change have become major public concerns, also governments develop an increasing interest in defining how citizens ought to behave as consumers and how retailers and producers should facilitate such responsible behavior. Since they are supposed to defend the “bonum commune,” e.g., the public health of their citizens and a sound common future for all, a new consensus on “appropriate” consumption choices has to be found, balancing beneficence and autonomy. 相似文献
17.
Ethical Rooms for Maneuver and Their Prospects
Vis-à-vis the Current Ethical Food Policies in Europe
Michiel Korthals 《Journal of Agricultural and Environmental Ethics》2008,21(3):249-273
In this paper I want to show that consumer concerns can be implemented in food chains by organizing ethical discussions of
conflicting values that include them as participators. First, it is argued that there are several types of consumer concerns
about food and agriculture that are multi-interpretable and often contradict each other or are at least difficult to reconcile
without considerable loss. Second, these consumer concerns are inherently dynamic because they respond to difficult and complex
societal and technological situations and developments. For example, because of the rising concern with global warming, carbon
dioxide absorption of crops is now attracting public attention, which means that new requirements are being proposed for the
environmentally friendly production of crops. Third, there are different types of consumers, and their choices between conflicting
values differ accordingly. Consumers use different weighing models and various types of information in making their food choices.
Changing food chains more in accordance with consumer concerns should at least take into account the multi-interpretable,
dynamic, and pluralist features of consumer concerns, for example, in traceability schemes. In discussing usual approaches
such as codes, stakeholder analysis, and assurance schemes, I conclude that these traditional approaches can be helpful. However,
in cases of dynamic, pluralistic, and uncertain developments, maintaining some pre-existing evaluating scheme or some clear
cut normative hierarchy, such as codes or assurance schemes, can be disastrous in undermining new ethical desirable initiatives.
Instead of considering ethical standards and targets as fixed, which is done with codes and schemes, it is more fruitful to
emphasize the structure of the processes in which ethical weighing of relevant consumer concerns get shaped. The concept of
“Ethical Room for Maneuver” (ERM) is constructed to specify the ethical desirable conditions under which identification and
weighing of paramount values and their dilemmas can be processed. The main aims of the ERM are making room in all the links
of the food chain for regulating and implementing the relevant consumer concerns by (1) balancing and negotiating, (2) supporting
information systems that are relevant and communicative for various consumer groups and (3) organizing consumer involvement
in the links of the food chain. The social and political context of agriculture and food production, particularly in Europe,
gives ample opportunity for implementing several types of Ethical Rooms for Maneuver. Finally, I discuss several types of
Ethical Rooms for Manoeuvre in the food chains that can be communicated by means of specific traceability schemes to less
involved stakeholders with the potential consequence that the stakeholders will be motivated to be more involved. 相似文献
18.
Richard M. Kashmanian 《环境质量管理》2019,29(2):7-35
Future global megatrends project a population increase of 2 billion people between 2019 and 2050 and at least 1–2 billion people added to the global middle class between 2016 and 2030. In addition, 68% of the world's population is projected to be living in urban areas by 2050. With these projected large population increases and shifts, demand for food, water, and energy is projected to grow by approximately 35, 40, and 50%, respectively, between 2010 and 2030. In addition, between 1970 and 2014 there was an estimated 60% reduction in the number of wildlife in the world and an estimated net loss of 2.9 billion birds, or 29%, in North America between 1970 and 2018. Loss of species populations and number of species is interconnected with reduced health of biodiversity and ecosystems. Human activity has been the main catalyst for these substantial declines primarily through impacts on habitats. These losses are accelerating. Since a company's supply chain environmental impacts are often as great or greater than its own direct environmental impacts, it may be prudent for companies to engage with their supply chains to protect and enhance habitats and biodiversity and protect rare, threatened, and endangered species. As one example, companies may have opportunities and strategic reasons to include requirements in their supplier codes of conduct and supplier standards for suppliers to protect biodiversity and rare, threatened, and endangered species, as well as additional requirements to expand or enhance habitats and ecosystems to increase biodiversity. This article follows one pathway that companies could pursue further and with greater speed—to engage with their supply chains to strengthen supplier codes of conduct to protect biodiversity and rare, threatened, and endangered species. The importance of forests, private land, and landscape partnerships is discussed as means to protect much more of the planet's biodiversity and rare, threatened, and endangered species. Lastly, the article identifies examples of opportunities for companies to more formally incorporate biodiversity into their business, supply chain, and sustainability strategies. 相似文献
19.
Yana Manyukhina 《Journal of Agricultural and Environmental Ethics》2017,30(4):595-614
Over the past years, various accounts of ethical consumption have been produced which identify certain concepts as central to mediating the ethical relationship between the consumer and the consumed. Scholars across disciplinary fields have explored how individuals construe their ethical consumption responsibilities and commitments through the notions of identity, taking care and doing good, proximity and distance, suggesting the centrality of these themes to consumer engagement in ethical practices. This paper contributes to the body of research concerned with unravelling consumers’ conceptually mediated relationship to moral and ethical issues in the sphere of consumption by revealing a new set of ideas through which people interpret and relate to consumption ethics. Drawing upon findings from an empirical study on self-perceived ethical food consumers, I demonstrate that people’s perceptions and views of ethical problems around consumption are bound up with notions of vulnerability, suffering, and harm, and that these notions permeate and impact all aspects of ethical consumer behaviour. The paper concludes by arguing that we need to further explore the conceptual underpinnings of ethical consumer commitments and practices, and expand the conceptual toolkit of research on ethical consumption to account for a wider range of ideas and notions that shape individual as well as collective motivations, intentions, and actions throughout the process of becoming and being an ethical consumer. Finally, the paper suggests a specific analytical framework to facilitate such research. 相似文献
20.
Marco Beccali Maurizio Cellura Maria Iudicello Marina Mistretta 《Environmental management》2009,43(4):707-724
Food production and consumption cause significant environmental burdens during the product life cycles. As a result of intensive
development and the changing social attitudes and behaviors in the last century, the agrofood sector is the highest resource
consumer after housing in the EU. This paper is part of an effort to estimate environmental impacts associated with life cycles
of the agrofood chain, such as primary energy consumption, water exploitation, and global warming. Life cycle assessment is
used to investigate the production of the following citrus-based products in Italy: essential oil, natural juice, and concentrated
juice from oranges and lemons. The related process flowcharts, the relevant mass and energy flows, and the key environmental
issues are identified for each product. This paper represents one of the first studies on the environmental impacts from cradle
to gate for citrus products in order to suggest feasible strategies and actions to improve their environmental performance.
相似文献
Marina Mistretta (Corresponding author)Email: |