A study on food security based on farmland pressure index in Jiuquan city, China

摘要

The farmland pressure index (FPI) was applied to assess the food security in Jiuquan City. The change of food security condition from 1988 to 2007 was analyzed according to the data of population, farmland area and grain yield in study area. The grey model (GM) (1, 1) was built to predict the food security condition next 10 years. The following conclusions were gotten. The FPI is greater than1 from 2001.This indicated the food was insecurity from 2001 to 2007. The FPI will increase persistently and is greater than 1 from 2008 to 2018. This indicates the gap between food supply and demand increasingly greater. Food security situation will become more severe.