关键词: 食物消费')">食物消费, 生态足迹, 折算因子, 支出弹性

Abstract:

【Objective】 Food consumption appropriate not only arable land but grassland and other various agricultural land resources . It is of great use of dynamic analysis of ecological appropriation for food consumption of Chinese rural households from the perspective of total agricultural land resources and then overall evaluation of resource basis to ensure food security with structure upgrading of food consumption. 【Method】 The appropriated land categories and domestic conversion factors of food consumption items were firsty discussed. Accordingly, the ecological footprint (EF) model with refined factors was applied to macro-estimate the ecological pressure of food consumption and the changes of Chinese rural residents in the latest 30 years. 【Result】 The study indicated that ecological appropriation increased from 1.465 national standard mu (nsm) in 1980 to 1.782 nsm in 2006 with the changes of Chinese food consumption structure of rural residents, and especially the direct appropriated arable land has declined dramatically since 2000. Food EF had a strong correlation with expenditure on food over the period, furthermore, it can be evidently proved by an elasticity of per capita meat and aquatic products EF 0.43. 【Conclusion】 The overall ecological pressure of food EF of Chinese rural residents has increased unsteadily, as the grain-consuming animal products and aquatic product contributed to this. The comparison of dynamic analysis of food EF calculated by fixed yields per unit area and variable yields per unit area indicated that higher productivity of arable land has greatly alleviated the pressure on resources demanded by the process of structure upgrading of the food consumption of rural residents in China.

Key words: food consumption')">food consumption, ecological footprint, conversion factors, expenditure elasticity