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明代榆林镇作为“九边”之一,其沿线地处毛乌素沙地南缘风沙区与黄土高原北部过渡带,生态环境比较脆弱。明代曾在该区域大规模实施过军屯。军屯制度是典型的国家制度管理下的农业开发活动,其中制度和政策是决定其屯垦行为的主导因素。文章选定榆林沿边长城这一区域,利用历史文献,确定了军屯实施的范围界限,在此基础上将制度因素与当地环境变化联系起来进行分析,初步研究了制度和政策因素对环境变化影响的方式和力度。
As one of the “nine sides” in the Ming Dynasty, Yulin town is located in the transitional zone between the wind and sand area on the southern margin of the Mu Us Desert and the northern transitional zone on the Loess Plateau, and its ecological environment is relatively fragile. The Ming Dynasty had conducted large-scale military operations in the region. The military power system is a typical agricultural development under the management of the state system. Among them, the system and policy are the main factors that determine the behavior of the government. This article selects the area along the Great Wall along Yulin and makes use of historical documents to determine the limits of military implementation. On this basis, it analyzes the institutional factors and changes in the local environment, and studies the impact of institutional and policy factors on environmental change The way and intensity.