基于景观格局分析的湖南长沙城市林业建设对策

The landscape patterns of urban forest in Changsha City

文章以Ace View为技术手段,运用景观生态学的原理与方法,通过多样性指数、破碎度、分离度、平均形状指数、斑块密度等指标来分析长沙市的景观格局特征,结果表明,在长沙建成区内,有林地斑块分布极不均衡,中小尺度斑块类型所占比例很大,破碎度较高,林水结合的空间很小,最后还提出了长沙城市林业建设的一些相关对策。

As a critical urban landscape component, urban forest plays significant roles in maintaining biological diversity, improving ecological environment and regulating microclimate. This paper discusses the characteristics of landscape patterns of the built-up area of Changsha as a case, which can benefit urban planning and construction to improve the ecological functions of urban forest. The characteristics of landscape patterns of Changsha were analyzed using ArcView software, according to the theories of landscape ecology and the single indicators including diversity index, isolation index, separation, average shape index and patch density. The results indicate： In the built-up area in Changsha,forest patched are not evenly distributed and highly fragmented, with an evidently larger proportion of middle and small patches and little space for adding water bodies. Specific strategies relevant to urban forest development in Changsha City were proposed.