矿区土地利用变化及其政策驱动研究

Analysis on Land Use Change and Its Driving Forces by Policy Factors

[目的]分析矿区土地利用动态变化及政策因素对其土地利用变化的驱动作用,为区域土地资源的可持续利用提供科学依据。[方法]以山西省宁武县薛家洼乡为研究区,基于1990,2005和2013年的遥感影像数据,利用RS和GIS技术,对薛家洼乡1990—2005,2005—2013年2个时期的土地利用动态变化及土地利用程度进行定量分析,并深入分析探讨政策因素对研究区土地利用变化的驱动作用。[结果]1990—2013年,研究区工矿用地变化幅度比较大。研究区2005—2013年的综合土地利用动态度大于1990—2005年,就单一土地利用动态度而言,工矿用地在两个时期的所有土地利用类型中变化速度都是最快的,且在前一个时期的变化速度远大于后一个时期。[结论]1990—2013年,土地利用总体上处于衰退时期。矿产资源开发政策是研究区土地利用变化的主要政策驱动因素,生态环境保护政策和耕地保护政策也深刻地影响着薛家洼乡的土地利用变化。

[Objective]The objective of this study is to analyze the land use change and the influences of policy factors on land use change in mining area in order to provide scientific support for the sustainable use of regional land resources.[Methods]This paper took Xuejiawa,Ningwu County as the study area,by using the RS and GIS technology,and used the remote sensing images of 1990,2005 and 2013as data sources to quantitatively analyze the land use dynamic changes and the land use degree of the study area in two different periods of 1990—2005and 2005—2013,and to analyze the major policy driving forces in land use of the study area.[Results]The mining land increased greatly from 1990 to 2013.The results demonstrated that the comprehensive dynamic degree of the land use from 2005 to 2013was higher than that from 1990 to 2005.As for the single dynamic degree of land use in the two periods,the mining land showed the highest variability among all land use types,with the variability in the previous period was far greater than the later period.[Conclusion]From 1990 to 2013,land use change was in recession generally.The mining industry policies are the driving forces of land use change in the study area,ecological environment protection policies and arable land protection policies also profoundly affect land use change in Xuejiawa Township.