基于SPOT5图像的小城市城区绿地系统景观异质性分析——以邹城市为例

Analysis on Green System Landscape Heterogeneity of Small City Based on SPOT Image

以邹城市建成区为研究对象,以邹城市2006年的SPOT5遥感影像为信息源,通过ERDAS IMAGINE 8.5对图片进行处理,利用Ar-cview GIS图像、数据处理功能,获取景观要素图斑,计算景观格局的异质性指数。结果表明,景观多样性指数相对较高。邹城城区绿地系统的景观优势度较小,均匀度较大。绿地面积分布较为均衡,但是各类型绿地分布并不均衡。通过对景观异质性指数的分析,探讨了小城市景观生态空间格局,提出了城市景观生态优化的对策和措施。

With Zoucheng City as the study object, the landscape elements graph spot was obtained and heterogeneity indexes of landscape pattern were calculated by using Arcview GIS images after processing a picture through ERDAS IMAGINE 8.5 on the basis of SPOT5 remote sensing images information sources of Zoucheng City in 2006. The results indicated that landscape pattern index was higher. The landscape dominance of green system in Zoucheng City was smaller, but evenness index was big. The green space area distribution was more balanced, but the vegetation type distribution was imbalanced. Based on the analysis of landscape pattem index, the spatial pattern of landscape ecology in small city was discussed, putting forward the countermeasure of optimizing urban landscape ecology.