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应用环境星监测北部湾地区采伐和造林动态的研究

作  者:
代玉丽
单  位:
国家林业局调查规划设计院
关键词:
北部湾;环境星;采伐;造林;动态;监测
摘  要:
采用2008和2009年末环境星CCD数据,对广西北部湾地区的森林采伐和造林动态进行了监测。结果表明:1)环境星CCD图像有较好的内部几何一致性,几何配准之后,2期图像之间可以达到0.5个像元以内的配准精度,适合进行动态监测;2)采用NDVI差值法,监测的采伐和造林情况与目视判读结果有很高的一致性,可以达到较高的监测精度;3)监测结果显示,监测期内广西北部湾地区桉树林的面积正在扩张,2009年末相对2008年末桉树面积增加为13.4%,其中一半以上为采伐针叶林后种植的桉树。
译  名:
Monitoring of Harvest and Reforestation Dynamics with HJ-1 Imagery in Beibu Gulf Region
作  者:
DAI Yuli(Academy of Forest Inventory and Planning,Beijing 100714,China)
关键词:
Beibu Gulf region,HJ-1,harvest,reforestation,dynamics,monitoring
摘  要:
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.

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