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1.
Diets lower in meat could reduce agricultural expansion and intensification thereby reducing biodiversity impacts. However, land use requirements, associated with alternate diets, in biodiverse regions across different taxa are not fully understood. We use a spatially explicit global food and land system model to address this gap. We quantify land-use change in locations important for biodiversity across taxa and find diets low in animal products reduce agricultural expansion and intensity in regions with high biodiversity. Reducing ruminant meat consumption alone however was not sufficient to reduce fertiliser and irrigation application in biodiverse locations. The results differed according to taxa, emphasising that land-use change effects on biodiversity will be taxon specific. The links shown between global meat consumption and agricultural expansion and intensification in the biodiverse regions of the world indicates the potential to help safeguard biodiverse natural ecosystems through dietary change.  相似文献   
2.
本试验利用一个室外露天水容量为187立方米的水泥池进行马氏珠母贝人工育苗,一次育出贝苗5065万只,平均每立方米水体收贝苗27.08万只。室外大池育苗具有耗饵量少,节约人力,培育的幼虫和贝苗生长快和产苗量大等优点,能够迅速提高贝苗总产量,解决目前存在的贝苗(?)足的困难,值得提倡推广。  相似文献   
3.
This conceptual review article provides a critical appraisal of Sustainable Consumption and Production research, which is currently framed by two generic positions. First, the ‘reformist’ position, which focuses on firms pursuing green eco-innovations and consumers buying eco-efficient products, represents the political and academic orthodoxy. Second, the ‘revolutionary’ position, which is a radical critique of the mainstream, advocates the abolishment of capitalism, materialism, and consumerism, and promotes values such as frugality, sufficiency, and localism. We find this dichotomous debate problematic, because it is intellectually stifling and politically conservative (in its outcomes). To move beyond this dichotomy, we propose a third position, ‘reconfiguration’, which focuses on transitions in socio-technical systems and daily life practices and accommodates new conceptual frameworks. For each of the three positions, we discuss: (1) the scale and type of change, (2) views on consumption and production in exemplary approaches, (3) underlying theoretical, epistemological and normative orientations, (4) policy implications, and (5) critical appraisal. The conclusion compares the three positions, provides arguments for the fruitfulness of the reconfiguration-position and offers four critical reflections about future Sustainable Consumption and Production research agendas.  相似文献   
4.
John Overton 《Geoforum》2010,41(5):752-762
Geographers have developed a keen interest in the social production of space - in the way meanings and values are ascribed to places as a result of changing social, cultural and political processes. There is a need to explore this approach further, seeing how social and economic values of places are inter-related and how these values are constructed in often deliberate and concerted ways. There is also a need to explore how such values are consumed: how the values in place are traded, appropriated and redistributed, both through the products of places and in land markets. This paper examines the New Zealand wine industry where certain wine regions have been identified and developed in ways which attempt to emphasise their distinctiveness in terms of wine quality and thus enhance the value of the wine produced. Different strategies have been employed in this process of place construction and this reflects the differential role of capital, striving on the one hand to increase the price and marketability of the products of distinctive places but, on the other, careful not to over-inflate land values and thus restrict further expansion. The paper suggests that the issue of consumption of space, involving a complex relationship amongst land, capital and place, is worthy of further exploration.  相似文献   
5.
本文介绍铜消费市场的发展历程,分析产业结构变化产生的原因,对评价铜矿供应风险的进口集中度指标进行定量分析,对铜矿供应风险展开评述,分析进出口格局中国家和企业的地位,并对未来全球铜消费情况进行展望。  相似文献   
6.
2013年世界硫黄市场处于供不应求的状态。全球各种形式硫产量7531万吨,同比增长4.2%。硫黄贸易量3100万吨,同比下降3.1%。2012年硫黄视消费量为5422.9万吨,同比增长4.4%。2013年全球硫黄价格呈下降趋势,近期开始上涨。  相似文献   
7.
Despite rapid economic growth, India has not seen the improvements in food and nutritional security that other developing countries have had. This “Asian enigma” has generated a wealth of economistic analyses seeking to explain the persistence of poor nutrition, yet few studies have looked at everyday experiences of changing food systems, and how this impacts nutritional practices as well as the processes of subject formation. In this paper, I draw on qualitative research conducted in Uttarakhand, North India and examine how state-led shifts in agricultural production have resulted in changing food consumption practices and diminished perceptions of health. Villagers link this decreased health to increased chemicals in home-produced food, greater dependence on the market for food purchases, and generational changes in dietary preferences. Despite villagers’ cognizance of the negative health effects of these practices, they largely view these byproducts of capitalistic development with an air of inevitability. Following Mansfield (2011) this paper contributes to the political ecology of health literature by employing the concept of food as a “vector of intercorporeality” (Stassart and Whatmore, 2003:449) and bringing this into conversation with a poststructuralist understanding of subjectivity. I argue that within shifting landscapes of agriculture production and food consumption, notions of diminished health are indicative of the complex and always incomplete processes of subject formation. I view shifting health perceptions as intimate bodily resistances to agricultural development, and conclude that within agricultural development programs a focus on bodily health and well-being is a fecund platform for further experimental research that seeks to imagine development differently.  相似文献   
8.
在中国经济步入新常态之际,为了研究城镇化背景下的长期碳排放趋势,构建了人口变动与能源系统互动的综合分析框架与社会经济-能源系统模型。结果显示,从2014年至2050年,预计有3亿人口从农村流向城市,并呈现从中小型城市逐步向大型和特大型城市汇集的趋势。人口流动趋势与人民生活质量改善结合,推动中国基础设施建设、工业产品生产和能源服务需求增长。基准情景下,2050年中国一次能源消费总量达到84亿tce,能源相关CO2排放达到176亿t,比2013年增长83%;而在低碳转型情景下,通过技术创新,2050年中国一次能源消费需求可以控制在61亿tce左右,CO2排放在2020—2025年间达峰,2050年比基准情景降低78%。低碳转型过程中,非化石能源电力和能效技术的减排潜力最大,工业和电力部门率先在2020年达峰,建筑和交通 (①按照国际通行的能源系统部门划分标准和能耗概念,工业、建筑、交通均属于终端能源消费部门,其中建筑部门能耗指建筑运行能耗,而非建筑建造过程中的能耗;交通部门能耗指所有交通活动能耗,既包括交通运输业营运类运输工具的交通能耗,也包括私人、公务非营运类运输工具的交通能耗 [1]。)将在2030年左右达峰。实现低碳转型所需新增固定投资占GDP的1.5%,不会给国民经济带来重大负担。中国实施新型城镇化战略具有技术和经济可行性。  相似文献   
9.
分析了大数据时代测绘地理信息服务呈现出的新特点、新趋势,研究了大数据给测绘地理信息服务带来的机遇和挑战,提出了大数据时代测绘地理信息服务的“5v”要求,并就推进测绘地理信息服务转型升级提出建议。  相似文献   
10.
Sarah Marie Hall 《Geoforum》2011,42(6):627-637
Using ethnographic research with six families in the North West of England (2007–2009), this paper opens up the ‘black box’ of everyday ethical consumption by adding colour and form to these everyday experiences. While recent geographical literature has recognised the ethical considerations that are implicit in everyday consumption practices, there is a noticeable void of research that explores and fleshes out the everyday ethical actions of individuals and families as consumers. By exploring the everyday ethics of money, waste and health choices in family consumption practices, this paper makes the case for recognising the ethical nature of everyday practices and choices of consumption. It is argued that rather than consumers subscribing to a given set of ethics in consumption, there are multiple ways of recognising consumption as an ethically-embedded process.  相似文献   
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