广州地区森林景观多样性分析

景观多样性是生物多样性的重要研究内容和组成部分 ,它是对景观水平上生物组成多样性的表征1～ 3 ] 。由于生物多样性是人类赖以生存的物质基础 ,生物多样性保护已成为现代生态学和环境科学的研究热点。但是 ,以往的研究主要集中在物种多样性和生态系统多样性方面 ,对景观多样性的研究相对较少1～ 4 ,12 ] 。森林是陆地生态系统的主体和重要的可再生资源 ,森林的类型、空间分布及斑块的数目和形状对区域的生态平衡有较大影响。广州是我国人口稠密、经济高速增长的区域。研究广州地区森林景观多样性有利于了解人类活动严重干扰下的森林景观…

Area

The indexes of diversity,dominance,evenness,contagion,isolation,fractal dimension,patch density,landscape fragment of inner habitat area are used to study diversity of type,pattern and patch of forest landscape in Guangzhou area.The results show that:the pine forest is outstanding and orchard developed very quickly in Guangzhou area.Mean patch areas are large,patch density indexes are low and isolation indexes are small in pine forest and evergreen broad-leaf forest.In contrast,the patch areas are small, density indexes and isolation indexes are high in orchard,bamboo forest and China fir forest.Diversity index of forest landscape types in Guangzhou area is a little less than thatin Fujian Province.Above forest landscape characteristics in Guangzhou area is highly relative to human activity.