耕地利用集约度的变化规律研究

Study on the Law of Change of Arable Land Use Intensity with Economic Growth

【目的】揭示耕地利用集约度随经济发展的变化规律。【方法】选择了自然条件相似而经济水平不同的北京市大兴区和河北省曲周县两个研究区,计算了其耕地利用集约度并分析其变化。【结果】耕地利用集约度受到经济发展水平的显著影响。经济水平较高的大兴区,其耕地利用集约度要高于曲周县。此外,从近20年的数据分析来看,随着经济的发展,耕地利用集约度先是快速上升,而后上升速度减缓,最后稳定在一定水平上。与此同时,随着经济发展,不同种植制度之间的耕地利用集约度差异越来越大,出现集约度两极分化的现象。基于大量数据的分析结果,构建了一个曲线模型来总结耕地利用集约度的变化规律。【结论】经济发展显著影响耕地利用集约度。

【Objective】To explore the law of change of arable land use intensity.【Method】Daxing District and Quzhou County were chosen as two typical study regions with different economic conditions,and the differences in arable land use intensities,and how these intensities had changed during the progress of development were analyzed.【Result】Arable land use intensity was significantly influenced by economic conditions： The intensity of Daxing District,which is more developed economically,was much higher than that of Quzhou County.Furthermore,with economic growth,the general trend of intensity change initially increases quickly,then slows down and,at a certain level,becomes stagnant.At the same time,along with the development of economy,the polarization of intensity among different cropping systems becomes increasingly obvious,and is the result of the planting choices of farmers.【Conclusion】Based on the analysis of arable land use intensity changes,a model was built to explain the laws of changes of arable land use intensity.