分形理论在土地利用类型研究中的应用

Application of fractual theory in the distribution of land use

以济南市历城区孙村镇为例,运用分形理论对土地利用类型的分布是否具有分形结构进行了分析.结果表明:孙村镇各土地类型的分布具有分形结构,其中独立工矿用地、农村居民点、水浇地、果园、城镇建设用地、荒草地的分维值偏离随机运动值(1.500)较大,说明这6种土地利用类型处于一种相对稳定的状态,比较接近规则体;而交通用地、旱地偏离随机运动值较小,说明这2种土地利用类型受该区域自然地理条件的影响;交通用地、旱地的布局较复杂且不稳定.这一结论为定量地量度土地利用是否合理、科学找到了一个全新的定量化指标或参考参数.

Taking Suncun Town in Licheng District of Jinan City as an example, a statistical fractal analysis was made of the distribution of land use type in this paper. It is found that the distribution of land use type in Suncun Town has the fractal properties, of which the fractal dimensions of the independent land used for industry and mining, villages ,irrigable fields, orchards,urban construction land, ardmeadow deviate from largely random value（ 1. 500） . It is indicated that these six kinds of land use type are in a kind of relatively stable state,and relatively close to the regular body. On the other hand, the fractal dimensions of land use for traffic and dry land deviate from random value to little extent, which shows that the two land use types affected by this regional physical geography condition are relatively complicated and unstable. This conclusion provides new indexes or reference for Jinang general land plan.