《Multiple Pathways: Case studies of sustainable agriculture in China》

  • 来源专题:农业立体污染防治
  • 发布时间:2016-03-25
  • Chinese agriculture today faces major environmental challenges, from unsustainably high applications of fertilisers and pesticides to widespread soil erosion, pollution, water scarcity and the loss of agricultural biodiversity. Coupled with the dramatic depopulation of rural areas and high-profile food safety scares, these challenges are prompting the emergence of a growing movement towards sustainable agriculture, witnessed by the rise in ecological farms, organic farmers’ markets in major cities, as well as increasing emphasis on sustainability in Chinese policies related to agriculture. But what impact is this movement having on these challenges and how can it best be supported?

    This research report assesses the economic, social and environmental impacts of eight sustainable agriculture case studies from seven provinces in China to build a deeper understanding of the multiple emerging pathways towards sustainable agriculture. From uncertified small community-led farmers’ associations and remote sheep-rearing societies which target local urban consumers, to large certified organic companies with national distribution, these initiatives illustrate the diverse alternative models of agriculture with which communities, local governments and companies are experimenting across China. The aim is to distil lessons learned and ultimately to provide insights for researchers, practitioners, and policymakers into how sustainable agricultural practices can be better supported, both in China and elsewhere. As China is a laboratory for development in many respects, its experience is highly relevant for other countries.

相关报告
  • 《Greenhouse Gas Impact of Bioenergy Pathways》

    • 来源专题:农业立体污染防治
    • 发布时间:2016-02-26
    • 2016年1月12日,荷兰环境署(PBL)受国际可再生能源机构(International Renewable Energy Agency,IREA)的委托,发布题为《生物能源路径的温室气体影响》(Greenhouse Gas Impact of Bioenergy Pathways)的技术报告,评估了不同生物能源技术路径的温室气体排放收益与影响。 Wide ranges in emissions Supply-chain emissions – i.e. emissions from the cultivation, production and transport of bioenergy – could range from around 20 grams of CO2-equivalent per megajoule (gCO2eq/MJ) for advanced biofuels to close to 60 gCO2eq/MJ for ethanol from wheat. The carbon impact for wood pellets ranges from 8 to 30 gCO2eq/MJ. Major areas of uncertainty are nitrous-oxide (N2O) field emissions and the assumed yields of woody crops. Studies using general or partial equilibrium models show land-use-change emissions from various types of conventional bioethanol ranging from 3 to 61 gCO2eq/MJ; those of conventional biodiesel range from 7 to 94 gCO2eq/MJ. For biodiesel, the use of peatland plays an important role in the greenhouse gas effects. Costs, benefits and policies Bioenergy options can deliver net cost benefits, compared to fossil fuel alternatives, and even more so if greenhouse gas emission reductions are valued in monetary terms. However, costs and benefits largely depend on climate policies, rules and regulations in the countries or sectors involved in the biofuel supply chain. Negative impacts of ambitious bioenergy schemes on natural ecosystems can be reduced significantly through the simultaneous introduction of measures to keep land conversion in check. In particular, schemes to protect forest areas can be instrumental to limit land-use change, leading to beneficial effects for nature protection and biodiversity conservation in highly valued forest areas.
  • 《Out of the Laboratory and on to our Plates: Nanotechnology in Food and Agriculture 》

    • 来源专题:纳米科技
    • 发布时间:2016-01-26
    • This Friends of the Earth's report from March 2008 finds that untested nanotechnology is being used in more than 100 food products, food packaging and contact materials currently on the shelf, without warning or FDA testing.