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The agricultural sector contributes 9% towards total UK greenhouse gas emissions and so may offer significant potential as a sector to help meet national and international emission reduction targets. In order to help farmers manage their emissions and to encourage more sustainable farming, several carbon accounting tools are now available. This article describes a short study that selected five suitable tools and compared their performance on nine European arable farms, concentrating on the crop production components, to determine how useful they are for assisting in the development of site-specific mitigation strategies and how well they would perform within farm assurance or benchmarking schemes. The results were mixed, with some tools better designed for identifying mitigation opportunities than others. The results also showed that, quantitatively, the results are highly variable between tools and depended on the selected functional unit, this being highly important if the wider aspects of sustainability such as food security are to be considered. However, there is statistical consistency across the tools regarding the ranking order of the farms in terms of their emissions.  相似文献   
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Today, less than 3% of the 250,000 plant varieties available to agriculture are in use. Sources of (agricultural) biodiversity are under threat and disappearing in many regions. Increasing industrialisation of agriculture and top-down agricultural research have contributed to this dependence on a relatively few plant varieties. This article argues that new approaches to agricultural development research are needed to conserve agricultural diversity, improve crops, and produce food of quality for all. Such an approach should enable small farmers on marginal lands to participate as equal partners alongside agricultural scientists, fairly sharing their know-how, expertise and seeds. Three case studies illustrate how farmers and plant breeders are working together in a diversity of agro-ecological, socio-economic and political contexts to put these new approaches into practice. New forms of collaboration are producing an increase in diversity and a number of promising improved varieties in terms of yields, agronomic traits and taste. These varieties are showing better adaptation to the local environmental conditions without requiring extra external inputs. Long-term success requires that these efforts be backed up by supportive policies, by actions to ensure that policies are implemented, and where necessary by related legislation.  相似文献   
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The central theme of this article is to illustrate the similarity and difference of people-management system among the key economies in East Asia. The article not only identifies what elements do exist in East Asian people-management system, but also examines other new elements being adopted into the existing system with the influences from the US and Europe. The authors analyse the information on the changes of people-management system, factors causing the changes and time. The common phenomenon is that when there is a crisis, then that may provide some opportunities for drastic changes. The authors conclude the article by pointing out that HRM is in a reforming process towards hybrid people-management system in East Asia. However, this reforming process is not one-way only. A triangle-influence between East Asia, Europe and the US is the reality. In addition, multi-factors are shaping the outcome of reforming people-management system in East Asia, identified as foreign influence, the State's influence, the stage of social and economic development, and national and organizational historical path. Other economies, no matter in East Asia or other parts of the world, may draw some lessons from this study.  相似文献   
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