摘要
近年来,随着大宗农产品贸易的迅速增加,农产品贸易引起的资源与环境效应评价日趋凸显。为定量反映我国大豆供给变化的环境效应,本研究使用改进的生态足迹分析方法,对我国1986～2009年的大豆供给的耕地足迹和能源足迹进行了定量测算,耕地足迹按照生产国单产进计算,能源足迹考虑了生产过程中化肥、机械投入和运输过程中的能源消耗。结果表明:(1)我国大豆供给的耕地足迹呈不断增加的趋势,且进口引起的耕地足迹增速大于国内耕地足迹增速;(2)化肥及机械投入的不同是导致我国及进口来源国大豆能源足迹产生差异的主要原因;(3)对不同生产国的大豆耕地和能源足迹的对比表明,我国生产单位大豆隐含的耕地足迹和能源足迹均高于其他进口来源国,从资源利用角度而言,大豆国际贸易提高了全球农业资源的利用率,保证了我国农业的可持续发展。
With the increasing of international agricultural trade, more and more attention has been paid on the resources flow hidden in the trade and its environmental effect. The aim of this paper is to quantify the environmental effect of China＇s soybean trade using the ecological footprint analysis. This paper measuring and locating China＇s soybean supply footprints in terms of cropland and energy land from 1986-2009, it identify the cropland location by source country. The energy footprint calculation is based on the input of fertilizer and mechanism during the production stage, and the transportation also been considered. The results show that cropland footprint of China＇s soybean supply has increased gradually, and the import footprint takes the major weight; the difference in fertilizer and mechanism input makes the energy footprint varies between countries. Through comparison of the footprint with source countries, China has higher cropland footprint and energy footprint per ton, the soybean trade between China and other countries can increase land productivity at global level and make China＇s agricultural more sustainable.
出处
《生态经济》
CSSCI
北大核心
2013年第4期88-91,共4页
Ecological Economy
基金
九三粮油工业集团有限公司委托项目"我国大豆及其制品供应链
价值链监测与评估"
关键词
大豆供给
生态足迹分析
资源环境效应
soybean supply
ecological footprint analysis
resource environment effect
