Accounting emergy flows to determine the best production model of a coffee plantation
Accounting emergy flows to determine the best production model of a coffee plantation
复制标题
DOI：
10.1016/j.enpol.2011.09.005
复制
发表时间：
2011-11
期刊：
影响因子：
9
通讯作者：
B. Giannetti;Y. Ogura;S. Bonilla;C. Almeida
中科院分区：
文献类型：
--
作者：
B. Giannetti;Y. Ogura;S. Bonilla;C. Almeida
塞拉多是一个萨凡纳地区，是巴西仅次于亚马逊雨林的第二大生态系统，也面临着即将遭到破坏的威胁。在本研究中，能值综合法被应用于评估位于科罗曼德尔，米纳斯吉拉斯，在巴西塞拉多的咖啡农场的环境绩效。通过比较沿着10年的能值指数，评估土地利用对可持续性的影响，以评估驱动生产过程的能量流，并确定结合生产力和环境绩效的最佳生产模式。能值指数作为一个功能的一年作物。结果表明，Santo Inácio农场每公顷应生产约20袋绿色咖啡，以实现生产效率和环境的最佳表现。对咖啡贸易的评估补充了通过对比生产力和环境绩效获得的评估，尽管市场价格变化，但Santo Inácio农场的最佳间隔为10至25袋咖啡/公顷。
Cerrado, a savannah region, is Brazil's second largest ecosystem after the Amazon rainforest and is also threatened with imminent destruction. In the present study emergy synthesis was applied to assess the environmental performance of a coffee farm located in Coromandel, Minas Gerais, in the Brazilian Cerrado. The effects of land use on sustainability were evaluated by comparing the emergy indices along ten years in order to assess the energy flows driving the production process, and to determine the best production model combining productivity and environmental performance. The emergy indices are presented as a function of the annual crop. Results show that Santo Inácio farm should produce approximately 20 bags of green coffee per hectare to accomplish its best performance regarding both the production efficiency and the environment. The evaluation of coffee trade complements those obtained by contrasting productivity and environmental performance, and despite of the market prices variation, the optimum interval for Santo Inácio's farm is between 10 and 25coffee bags/ha.