广州城市绿地斑块的破碎化分析

对广州市区的绿地斑块类型进行划分，用斑块密度指数、廊道密度指数（ＣＤ）、斑块数破碎化指数（ＰＮ）分析广州城市植被斑块的格局；以其中几个区的公园为例用单拼块模型、斑块形状破碎化指数分析广义城市公园斑块的破碎程度。结果表明，东山荔湾、越秀这三个老城区的人口密集，道路繁多，导致廊道密度大，绿地斑块破碎程度高；广州城市公园的Ｄ值较大，有效面积较大；但老城区（荔湾区）的公园有受逼迫的情况；与老城区相比，白云

Fragmentization Analysisof Urban Vegetation Patches in Guangzhou

Patch types of urban vegetation in Guangzhou are classified in this paper. Density index of patches (PD), density index of corridors (CD), and fragmentization index of patch number (FN) are used to analyze the pattern of urban vegetation patches of Guangzhou. The fractal dimension of single patch and the fragmentization index of patch's shape are used to analyze the dope of fragmentation of parks in several districts. The result indicates that because of the large population and numerous roads, the density of corridors and degree of fragmentization are high in old districts, such as Liwan, Yuekiu, and Dongshan. The values of D of the parks are high, which implies the parks' efficient areas are big, and the parks in old districts are coerced. The degree of fragmentation of vegetation patches of Baiyun district is the least compared with other districts.