摘要
利用1992年TM、2000年TM、2008年ETM、2016年OLI遥感影像提取的绿洲信息,从面积和空间两个方面出发,结合绿洲变化率和时空变化驱动机制,比较分析近30年来石羊河下游绿洲的变化过程。结果表明:近30年来,民勤绿洲面积经历了先回升后缩小再回升的变化过程,绿洲质量明显转好。
Based on the oasis information extracted from TM in 1992, TM in 2000, ETM in 2008 and oli in 2016, the change process of oasis in the lower reaches of Shiyang River in recent 30 years is compared and analyzed from the two aspects of area and space,combined with the oasis change rate and spatio-temporal change driving mechanism.The results show that in recent 30 years,the area of Minqin oasis has experienced a change process of first rising, then shrinking and then rising, and the oasis quality has obviously improved.
作者
王晓军
WANG Xiao-jun(Shiyang River Basin Water Resources Utilization Center,Gansu Provincial Water Resources Department,Wuwei,Gansu 733000)
出处
《农业灾害研究》
2021年第7期87-88,90,共3页
Journal of Agricultural Catastrophology
关键词
遥感影像
民勤绿洲
绿洲变化率
时空变化
Remote sensing image
Minqin oasis
Oasis change rate
Space and temporal change
