Ecological Restoration and its Effects on Grain Production in the Corrasive Region of Loess Plateau

According to the restoration plan of each province in the corrasive region in Loess Plateau,the effect of ecological restoration on grain production in the corrasive region of loess plateau is analyzed.(1)The 147.92×10~4t grain production will decrease in the corrasive region because of the conversion from sloping farming land to forest or grassland.(2)Ecological restoration can have some positive influence on grain production.The transfer of water,fertilizers,pesticides,seeds and labor to reserved cultivated farmland can bring more increase in grain yield.Simultaneously,the advancement in agricultural science and technology and the agricultural infrastructure construction such as reconstruction of medium or low yield farmland can promote grain production by improving the ecological environment and reduce the risk of natural disasters.(3)The prediction shows that the total yield in the corrasive region of Loess Plateau in 2010 will reach 1 400.71 ×10~4t.The demand of grain based on the three levels(400kg,425kg or 450kg/person) will be respectively 1 389.34×10~4t,1 470.37×10~4t and 1 563.01×10~4t.In Project A,grain shortage will not appear in the corrasive region of Loess Plateau on the whole.But in order to achieve an equilibrium of demand and supply,loess hill regions must import grain from the Loess Platform region.