基于2009年Quickbird影像数据解译获得的乐清市城区绿地分布图,在GIS的支持下,运用景观生态学的原理和方法,对城区绿地景观格局进行了较系统的分析.结果表明:绿地景观结构不尽合理,以公园绿地为优势类型,道路绿地与居住绿地明显偏少；全区绿地多样性指数偏低,绿地类型不够丰富；绿地景观整体破碎度较高,其中新区的破碎度高于老区；绿地斑块分维数偏低,斑块形状较规则,缺乏自然形状,人工痕迹较重.论文对分析结果进行了讨论,并针对上述问题提出了相应的对策和建议,以期能为其他中小城市绿地格局分析与绿地建设提供参考.%Based on the green thematic map retrieved from its Quickbird imagery in 2009, the landscape pattern and the structure of green space system of Yueqing City was analyzed by applying the principles and methods of landscape ecology and with the support of GIS technology. Results showed that the structure of greens system was not satisfied, park greens was the dominant type of greens, and the diversity of greens was relatively low which means greens system was monotonous and its landscape was relatively fragile. Results also revealed that the new district had high degree of fragmentation than the old one, also the fractal dimension of greens patch was low and the patch shape was much regular. Finally, some suggestions were proposed for greens construction to optimize greens system as a whole for Yueqing City. The corresponding research results can also be referred to for greens construction and landscape pattern analysis in other small and medium-sized cities.
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