Spatial and temporal characteristics of land use intensive degrees of coastal areas in Shandong province

In order to explore the policy direction of coastal land protection and national food security, the paper built indicator systems of land use intensive degrees under the background of grain production regions, and applied them to Shandong province with 2400 farmers cost data of Shandong province and analytical hierarchy process and factor analysis. Results revealed that the spatial and temporal characteristics from land use intensive degrees were mainly controlled by intensity of pesticides. The growth speed of output efficiency and standard was lagged behind that of the elements. Food security was positive correlated with land use intensive degrees, and the overall performance of Shandong peninsula blue economic zone was superior to other planning areas. The policy direction of the results demonstrated that the central government should further strengthen the investment in major grain producing areas along the coast, develop efficient and low pollutant chemicals, play the role from the coastal economic development and technological progress to agricultural production. And in order to improve the efficiency of the direct subsidy to ensure national food security, land use intensive degree should be increased under the condition of the grain production efficiency growing.