关键词: 北部湾, 环境星, 采伐, 造林, 动态, 监测

Abstract: This paper describes the monitoring results of harvest and reforestation dynamics between 2008 and 2009 with HJ-1 CCD imagery in Beibu Gulf region. Major results show:1)HJ-1 CCD imagery has good internal geometric consistency. The registration accuracy between two-period imageries can be less than 0.5 pixel,which is suitable for dynamic monitoring. 2)Monitoring the harvest and reforestation by NDVI detection has a high consistency with ocular interpretation,and can reach a high monitoring accuracy. 3)Monitoring results indicate that area of Eucalyptus is expanding,which increased by 13.4% comparing to that of 2008. Among that more than 50% is reforested on harvested conifer woodlands.

Key words: Beibu Gulf region, HJ-1, harvest, reforestation, dynamics, monitoring