雷州半岛入侵植物互花米草的遥感监测与分析

Remote Sensing Monitoring and Analysis of Invasion Plant Spartina alterniflora in Leizhou Peninsula

为了对雷州半岛互花米草Spartina alterniflora进行监测,基于近3年的(2016年、2017年与2018年)Landsat 5影像和高景一号高分辨率卫星影像,运用面向对象分类技术和GIS分析技术,对湛江红树林国家级自然保护区及周边地区的互花米草信息进行提取并分析其分布范围、面积及扩散情况。研究结果表明,2016—2017年间,互花米草增加44.02 hm^(2),2017年至2018年间增加34.26 hm^(2),扩散速度有所下降,但在2016年至2018年,雷州半岛互花米草生长扩散整体呈递增趋势。

In order to investigate and monitor Spartina alterniflora resources in the Leizhou Peninsula,this study based on the Landsat 5 remote-sensing data and SuperView-1 from 2016 to 2018.Object-oriented classification technology and GIS analysis technology were used to extract the information of S.alterniflora.The investigation area include Zhanjiang Mangrove National Nature Reserve and adjacent areas,analysising its distribution range,area and diffusion.The results showed that from 2016 to 2017,the area of S.alterniflora had increased 44.02 hectares,and from 2017 to 2018,it had increased 34.26 hectares.The growth of S.alterniflora in Leizhou Peninsula presented an increasing trend from 2016 to 2018.At the same time,the increasing speed was slowing down.