广州市帽峰山森林景观斑块特征分析

Properties of the Forest Landscape Patches in Maofeng Mountain, Guangzhou

以SPOT卫星影像数据为主要信息源,结合地形图及数字高程模型,采用景观土地属性分类的植被分类途径,将景观分类结果利用地理信息系统软件ARCVIEW进行分析处理,并提取斑块特征信息.结果表明:(1)广州市帽峰山森林景观共有11个斑块类型;(2)各类型拥有的面积、周长及斑块数极不均衡;(3)阔叶混交林、针阔混交林类型是帽峰山森林景观的主导景观类型;(4)经济果林、竹林类型斑块小而密集,呈散布型分布,其形状指数、密度指数均较大,景观的破碎化程度较高,而阔叶混交林、针阔混交林却较小,类型保持完整,景观破碎化程度低.

Based on the SPOT image, the topographic map and digital elevation model, this paper analyzed the forest landscape types and the properties of different patches in Maofeng Mountain, Guangzhou with the GIS ARCVIEW software. The results are mainly as follows: 1) The forest landscape in Maofeng Mountain could be divided into 11 patch types; 2) The area, perimeter and number of different patch types varied greatly; 3) Broadleaved mixed forest and coniferous and broadleaved mixed forest were the dominant landscape types in the Mountain; and 4) The patches of orchard and bamboo forest were small, numerous and dispersedly distributed, their shape index and density index were relatively high, indicating that the landscape was highly fragmented. However, the shape and density indexes of broadleaved mixed forest and coniferous and broadleaved mixed forest were small, the patch types kept intact and the landscape was less fragmented. 