Abstract:

As food production becomes unstable and the issue of food safety is increasingly outstanding, it is necessary to understand the spatial distribution characteristics of food provision service. In this study, we used "calories" which were standardized from food production according to the food-nutrition converting formula, to assess the spatial characteristics of food provision service and its impact factors. The results showed that: 1) In 2010, the total food production value was up to 11765.28×10¹² kJ in China, and the food production capacity of southeast is stronger than that of northwest. 2) The capacity of food production varied in different geographical regions, that East China has the best food production function, followed by Central and Northeast China. Henan, Shandong and Heilongjiang were the three major food provision provinces. 3) Under the situation of cultivated land resources dwindling, technology elements play a more important role in improving the food production capacity of the ecosystem. Factors like sowing area, effective irrigated area, chemical fertilizer, agricultural machinery power, agricultural populations, and farm chemicals have significant positive correlation with food production capacity (P<0.01). Therefore, in order to improve China's food production capacity and realize the sustainable development of society and environment, the important ways are to take full advantage of natural resources and make more efforts to use scientific techniques.

Key words: ArcGIS, food production, ecosystem services