山东沿海地区耕地利用集约度时空特征

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

为了探讨沿海地区耕地保护利用和国家粮食安全的政策指向,选取山东省2400个农户成本数据,利用层次分析法和因子分析法构建了以粮食主产区为背景的耕地利用集约度评价指标体系并将之应用于山东省。分析结果显示,耕地利用集约度所表现出来的时空特征主要受制于农药强度;产出效率增长速度与水平落后于要素强度;粮食保障水平与耕地利用集约度呈正相关;半岛蓝色经济区整体表现优于规划联动区。研究所体现的政策指向是:中央政府应进一步加大对地处沿海粮食主产区的投入力度,研发高效低污染农药,充分发挥沿海经济与技术进步对农业生产的辐射,使产出效率在保持提高的条件下进一步提升耕地利用集约度,提高直补效率,保障新时期国家的粮食安全。

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.