基于TM遥感影像的福州景观生态格局分析

Analysis of Landscape Patterns Based on TM Image in Fuzhou City

基于遥感、地理信息系统和景观生态学研究方法,以福州市为研究区域,对2003年的TM遥感影像图进行目视判读,得到的福州市土地利用现状图.应用FRAGSTATS软件计算福州市各景观格局指标,结果表明:研究区内景观类型以林地为主,建设用地次之,最小的为未利用地.从景观尺度上看,多样性指数较高,各种景观类型分布比较均匀;从景观类型尺度上看,斑块形状复杂程度中等,但形状大小差异较大,分离度指数比较高,表明福州市2003年间各景观类型在研究区内分布较为分散.

There takes the city of Fuzhou for example. Based on the means of the techniques of RS,GIS and landscape ecology,we have achieved the map of land-use of Fuzhou after interpreting the 2003 TM images. Then we have calculated the indexes of landscape patterns in Fuzhou city using Fragstats 3.3. The results show that landscape patterns in the researching region are dominated by the forest land and the non-used land gets the smallest proportion. On the landscape scale,the Shannon＇s Diversity Index and Evenness Index are relatively high. On the landscape element scale,the patch heterogeneity is very high,so is the Division Index. The results also show that the various landscape elements are distributed in 2003 in Fuzhou city.