丘陵区小城镇土地利用景观空间格局分析——以绵阳市文昌镇为例

Landscape Spatial Patterns of Land-use in Small Towns of Hilly Area——A Case Study of Wenchang Town in Mianyang City

在GIS技术的支持下,运用空间洛伦茨曲线和分形理论,对梓潼县文昌镇2009年土地利用景观格局进行了分析,获得了各土地利用景观类型的分形维数,不稳定性指数和分散程度。结果显示:1)全镇土地利用景观要素边缘的复杂程度是公路用地(裸地(其他草地(有林地(园地(水工建筑用地(河流水面(旱地(其他林地(灌木林地(村庄(水田(水库和坑塘(风景名胜及特殊用地(内陆滩涂(设施农用地(建制镇(采矿用地;2)单块面积较大的、社会功能较强的土地利用景观要素的稳定性最高;3)设施农用地、内陆滩涂、建制镇、采矿用地、灌木林地、裸地和其他草地在文昌镇分布极为集中,而其他的土地利用景观要素在文昌镇的分布则相对比较均匀。结果对土地利用规划有重要指导意义。

The landscape spatial patterns of land - use of Wenchang town in 2009 has been analyzed by the Lorenz curve, fractal dimension theory and GIS technology. The fractal dimension, the instability index and the decentralization degree of every landscape are acquired. The results are as the following： 1. highway, nudation, other grassland, wood, garden, hydraulic structure construction, fiver surface, dry field, other wood, shrub land, village, paddy field, scenic spot, other special land, inland intertidal zone, facility field, organic towns and mining land are arranged in the descending order of the complexity of the land - use fringe. 2. Among the elements of land - use types, the larger single square and the more socially functional are more stable. 3. the facility field, inland intertidal zone, organic towns, shrub land, nudation and other grassland are mainly concentrated distribution, while others are distributed equally. Therefore, the result is important for land planning.