摘要
估算广州城镇居民食物氮足迹,探讨城镇化与食物氮足迹之间的演化趋势。结果表明:1980—2009年广州市人均食物消费氮足迹随消费模式变化,2009年回归至较合理水平,为3.75 kg(N)/年;目前广州人均食物氮足迹下降至25.98 kg(N)/年,低于美国、德国和荷兰等发达国家的平均水平;广州人均食物氮足迹已越过拐点(PGDP 10 560元),但食物不合理的消费结构仍然存在。氮足迹分析有助于评价食物消费对生态环境构成的压力,为指导转变人类不合理的、环境负荷过大的生产生活方式和制定区域农业可持续发展策略提供依据。
Food nitrogen footprint in Guangzhou was calculated and its trend was analyzed. The results showed that food nitrogen footprint changed with consumption pattern and some other related factors during 1980--2009. Recently food nitrogen footprint had decreased to 25.98 kg （N）.cap-^-1.a^-1, lower than the average of developed country. Guangzhou has passed its turning point （PGDP 10 560 Yuan）, but the consumption structure remained unreasonable. Analysis of food nitrogen footprint was helpful to balance food supply structure, and identified the problems of agricultural sustainable development and provided useful policy proposals for decision-making.
出处
《广东农业科学》
CAS
CSCD
北大核心
2012年第6期137-140,共4页
Guangdong Agricultural Sciences
基金
国家环保公益性行业科研专项(201009017
201009067)
关键词
氮足迹
食物消费模式
可持续发展
广州
nitrogen footprint
food consumption model
sustainable development
Guangzhou
