Analysis of the price of pork in the view of agrograssland ecosystem

The pork price index in China from 1985 to 2006 was analyzed to investigate the seasonal fluctuations of pork price, indicating that the pork price showed a U changeable trend in a year and the cycle trend of AdjustmentWaviness.PorkGrain mode obviously depended on forage crops. The pork product in China increased by 2.14 times from 1985 to 2006, responding with the increase in supplies corn production. The increase rate in corn was tenfold, fourfold and threefold for those in rice, wheat and potato production, respectively. The relationship between pork prices and maize prices was positive correlation (R=0.973). The issue of pork prices lied on the contravention of supply and demand between the maize undulate output and pork feed increasing need, and while the development of biofuel intensified this contravention. This study suggested that developing grassland agriculture was a way to reducing the food security pressure in China.