福建省不同类型道路沿线土地利用/土地覆盖变化的时空格局

为研究不同类型道路对土地利用/土地覆盖变化的作用,确定不同道路的影响范围及强度,选取G15沈海高速公路福建省路段、G205国道与S203省道路段为研究对象,将道路沿线两侧10 km范围划分为8个缓冲区,分析1990、2000和2010年3个时期道路缓冲区土地利用的时空变化格局.结果表明:林地、耕地和草地是该区域主要的土地利用/土地覆盖变化类型;试验期间土地利用主要由林地和耕地向其他类型转变.不同类型道路缓冲区土地利用综合程度指数均随公路距离增大而减小,其中G15周边土地利用程度高于G205与S203;城镇化指数与公路距离呈显著负相关,不同类型道路城镇化指数由大到小依次为G15S203G205;公路对土地利用/土地覆盖变化的主要影响范围是公路两侧6 km内;其中建设用地动态度显著高于其他用地,动态度最高的区域位于在道路两侧1 km范围内.

Spatiotemporal pattern of land use change/land cover change along different grades of roads in Fujian Province

To investigate the effects of different grades of roads on land use change/land cover change ( LUCC) , land use types in buffer zone within 10 km along G15 expressway, G205 highway and S203 road were summarized. And changes and conversion of land use types from one to another during 1990-2000, 2000-2010, and 1990-2010 were interpreted. The results showed that forest land, cultivated land and grassland were the main land use type in the area. Forest land and cultivated land were the primary sources for other types of land use. Comprehensive index of land use degree reduced with increased distance from road buffer area for 3 types of roads, and that of G15 was significantly higher than those of G205 and S203. Generally, the influence of road on LUCC was with-in 6 km. Urbanization index for 3 types of roads in a descending order was G15, S203, G205, which was negatively correlated with the distance to roads. Land dynamic degree for construction use was higher than others, and human activity was most active within the range of 1km.