基于遥感技术的林芝县林地动态监测数据的分析
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摘要
以西藏自治区林芝县作为主要研究区域,采用监督分类这种方法对2005年、2010年以及2017年3年的30 m*30 m高分辨率遥感影像进行了林地相关的信息提取,利用ENVI软件以及监督分类方法实现对林芝县地区林地的动态监测数据的分析。研究结果表明:从2005年到2017年的期间里,林地面积减少764.66 km~2,并呈现出逐渐缩减趋势。随着林芝县城镇化进程的加快和经济的飞速发展,研究表明大量林地转变成为草地和建设用地,建议应当采取相应有效的措施来保护林地及自然植被。
Taking Nyingchi County of Tibet Autonomous Region as the main research area, the forest land-related information was extracted from 30 m*30 m high resolution remote sensing images in 2005, 2010 and 2017 by supervised classification method. The dynamic monitoring data of forest land in Nyingchi County were analyzed by ENVI software and supervised classification method. The results showed that from 2005 to 2017, the area of forest land decreased by 764.66 km~2, and showed a trend of gradual reduction. With the acceleration of urbanization and the rapid development of economy in Nyingchi County, the study shows that a large number of woodland has been transformed into grassland and construction land. It is suggested that effective measures should be taken to protect woodland and natural vegetation.
Taking Nyingchi County of Tibet Autonomous Region as the main research area, the forest land-related information was extracted from 30 m*30 m high resolution remote sensing images in 2005, 2010 and 2017 by supervised classification method. The dynamic monitoring data of forest land in Nyingchi County were analyzed by ENVI software and supervised classification method. The results showed that from 2005 to 2017, the area of forest land decreased by 764.66 km~2, and showed a trend of gradual reduction. With the acceleration of urbanization and the rapid development of economy in Nyingchi County, the study shows that a large number of woodland has been transformed into grassland and construction land. It is suggested that effective measures should be taken to protect woodland and natural vegetation.
引文
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[5]彭博,杨志高.长沙市森林面积变化驱动力分析[J].现代农业科技,2011(06):215+222.
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[7]陈佳玲,王昶.基于ENVI的遥感影像分类[J].北京测绘,2018, 32(08):933-937.
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