分形方法在南麂岛土地覆盖类型分析中的应用

A CASE STUDY ON THE ANALYSIS OF LAND TYPES WITH FRACTAL APPROACH IN NANJI ISLAND

借助分形理论对南麂列岛国家级海洋自然保护区内的主岛———南麂岛的地面覆盖及其状况进行分析 ,把各地类图斑的复杂性、破碎性和形状等定性概念 ,用分维值和形状因子进行定量描述和比较 ,分析其形成机制。结果表明 ,灌木林地和草地等自然性较强的地类分维值较大 ,而晒场和居民地等人为干预较多的地类分维值较小 ,庄稼地的分维值则介于它们之间 ,因此认为 。

Using fractal theory, this paper analyses land types of Nanji Island. The complexity, fragmental degree and shape property of the polygons are described quantitatively by means of fractal dimensions and shape parameters. The results show that the fractal dimensions of the shrubbery and the meadow are very large while the fractal dimensions of the bleachery, the village and the farmland are relatively small. This indicates that the fractal dimensions are related to human activities.