Abstract:

Food production and consumption constitute the core of agro-ecosystem, and decisively affect its structure and function and also the living environment of the mankind. The main agricultural activity is to establish and utilize a food system. A sound food system can improve agricultural productivity significantly, and balance the benefit between production and ecology, so as to maintain the sustainable development of ecosystem and to achieve food security. Increasing consumption of animal products and reducing consumption of plant products, especially grains, in people＇s daily diet will be the main direction for adjusting food system both in China and abroad. The ways for improving food system are considered herein. They include utilization of rangeland rationally, establishment of more sown pasture and implementation of cereal-pasture rotation systems, increase of herbivore livestock production,and use of arable land more efficiently.

Key words: grassland farming, rangeland , food security , food system

摘要：

食物的生产和消费是农业生态系统的精髓,它决定性地作用于农业生态系统的结构和功能,也作用于生存环境,农业活动主要是建造和利用食物系统.健康的食物系统,使生态系统可能持续发展,生产力成倍增长,可兼顾生态和生产双重效益,是食物安全的保证.增加动物性食物,减少对植物性食物,尤其是谷物的依赖,是我国与全球食物系统调整的方向.其中,合理利用天然草地,大力发展栽培草地或实行草田轮作,发展草食家畜,减缓对耕地资源的掠夺性利用,是完善食物系统的必然途径.

关键词: 草地农业 草地 食物安全 食物系统