关键词: 农业水足迹, 饮食结构, 贸易网络, 流动格局, 时空差异, 中国

Abstract: Food and water safety are major issues concerning people’s livelihood and national economy. Agriculture is the main water consuming sector. Studying agricultural water consumption is beneficial to the sustainable development of water resources. We analyzed the variation trend and spatial difference of agricultural water footprint. We also constructed an optimized model and an agriculture water footprint trade network to analyze the pattern of agricultural products trade flow in each province of China. The results show that: ①between 1961 and 2011, the total agricultural water footprint continued to increase, mostly due to increasing water footprint of livestock; the per capita agricultural water footprint showed a downward trend followed by upward trend. ②In 2000, the proportion of green water footprint of plant-type agricultural products gradually increased from northwest to southeast of mainland China. ③ Sichuan, Guangdong, Henan, Jiangsu and Shandong Provinces have the highest water footprint consumption. The regions with higher per capita agricultural water footprint consumption include economically developed areas (Beijing and coastal areas) and areas with high irrigation intensity (Northwest China and Inner Mongolia). ④In 2000, the total water saving of agricultural water footprint trade was 12.6 km3, mostly due to the international trade. Finally, based on the research results, we put forward advice on achieving sustainable development and utilization of agricultural water resources.

Key words: water footprint, dietary structure, trade networks, flow pattern, spatial and temporal