作　　者： ; ; ; ; ;

机构地区： 中山大学

出　　处： 《地理与地理信息科学》 2005年第2期53-57,共5页

摘　　要： 该文分析近20a来淇澳岛红树林湿地景观格局演变,采用遥感和GIS相结合的方法,利用遥感图像处理软件ERDAS对3个时相(1988年、1995年、2002年)的LandsatTM遥感图像应用专家系统方法分类;结合ARCGIS8 1,辅助FRAGSTATS3 01景观软件计算斑块和类型水平上的景观格局指数。淇澳岛红树林面积呈上升趋势,1988年、1995年和2002年分别为20 16hm2、28 08hm2、57 96hm2;斑块数目从1988年的1个增加到2002年的18个,总斑块密度、平均斑块周长面积比呈上升趋势;平均斑块大小、平均斑块分维数、平均斑块形状指数呈下降趋势。近20a来淇澳岛红树林湿地景观受人为干扰,景观破碎化程度不断扩大,需对湿地多功能景观进行科学调控。 In order to realize the sustainable utilization of wetland resources,conservation management and wetland restoration,the landscape pattern change of mangrove forest wetland in Qi'ao Island was analyzed.With ERDAS software,three temporal remote sensing imageries (in 1988,1995,2002)were processed by expert classification method.The landscape metrics/indexes,such as total number of patches,mean patch size,average patch perimeter/area ratio,total edge density,mean patch fractal dimension,mean shape index,largest patch index,total area,total edge,were calculated by Fragstats301 software.The results showed as follows: 1) The area of mangrove forest presented rise trend,the area was 2016 hm^2 in 1988,2808 hm^2 in 1995,5796 hm^2 in 2002,which was mainly induced by the reforestation engineering since 1999.2) Disturbed by human activities,total number of patches increased from 1 in 1988 to 18 in 2002,total patch edge density increased from 23613 in 1988 to 178079 in 2002,average patch perimeter/area ratio increased from 3106796 in 1988 to 8733572 in 2002.This showed the fragmentation of mangrove forest landscape enhanced by human-induced activities.3) Mean patch fractal dimension decreased from 11505 in 1988 to 10578 in 2002,mean shape index decreased from 22857 in 1988 to 15050 in 2002,which showed the complexity of patches decreasing by human disturbance.In the future,some regulating and controlling countermeasures should be put forward for mangrove forest wetland multi-function landscape pattern.

关 键 词： 红树林湿地 淇澳岛 景观格局分析 年 年 年 图像处理软件 景观格局指数 上升趋势 景观破碎化 系统方法 图像应用 遥感 软件计算 斑块密度 斑块大小 形状指数 人为干扰 湿地景观 科学调控

领　　域： [自动化与计算机技术] [自动化与计算机技术] [环境科学与工程]