摘要
利用2000年、2007年、2014年三个时期的Landsat系列卫星影像进行遥感分析,通过ENVI软件生成不同时相的植被覆盖度分布图,揭示某铀矿近些年植被覆盖度的时空变化特征。研究结果表明,该铀矿区域植被覆盖度分布为北部、东部和南部较高,且2007年植被覆盖度年平均值最高,其次为2000年,2014年最低。铀矿10 km范围内不同时相植被覆盖度的变化不明显,但铀矿山厂址区域建设后较建设前植被覆盖度明显降低。说明铀矿山建设对生态环境的影响局限于厂区所占范围,而对厂区外部较大区域无明显影响。
Vegetation coverage was calculated based on a remote sensing images of series of a Landsat satellite in a uranium mine in 2000,2007 and 2014.The different years maps of vegetation coverage which were generated through ENVI in 10 km area around the uranium mine were used to reveal the spatial and temporal variation.The result of research shows that vegetation coverage in north,east and south northeastern was higher than other area of the uranium mine and vegetation coverage in 2007 was the highest,the secondly only to the year of 2000.The lowest was in 2014.The variation of vegetation coverage among different period in 10 km area around the uranium mine was not obvious,but the vegetation coverage in factory area obviously reduced from later stage to early stage of operation.This phenomenon indicated that the construction of the uranium mine could influence the ecological environment which was limited to factory area,but not the larger external region.
作者
靳士科
何占飞
李元岗
Jin Shike;He Zhanfei;Li Yuangang(Fourth Research and Design Engineering Corporation of CNNC, Shijiazhuang 050021, China)
出处
《环境科学与管理》
CAS
2020年第3期152-156,共5页
Environmental Science and Management
基金
中核集团集中研发项目“二连基地地浸采铀环境影响最小化技术研究”。
关键词
遥感
植被覆盖度
时空变化
铀矿
remote sensing
vegetation coverage
spatial and temporal variation
uranium mine
