摘要
探究高原山区小流域植被覆盖度变化特征,为小流域生态保护和资源利用提供科学参考。选取1989-2017年贵州省黑滩河流域Landsat系列遥感影像,采用像元二分模型等方法反演流域植被覆盖度,探究植被覆盖度时空变化以及不同地貌植被变化特征。结果表明:1)1989-2017年黑滩河流域植被覆盖度由61.45%上升到67.49%,2011年后植被覆盖度上升最为明显;2)1989-2017年黑滩河流域植被覆盖度总体南高北低,其中1989-1996年、1989-2017年南部植被覆盖度上升相对较多;3)1989-2017年黑滩河流域中海拔丘陵区植被覆盖度较高,小起伏低山区植被覆盖度较低,小起伏中山区植被覆盖上升最明显。
We explore the characteristics of vegetation coverage in mountain small watersheds, which provide scientific references for ecological protection and resource utilization. The article selected Landsat series remote sensing images of Heitan river basin in Guizhou province during 1989-2017, and used pixel dichotomy and other methods to explore the temporal and spatial characteristics of vegetation. The results show that: 1) The vegetation coverage of Heitan river basin increased from 61.45% to 67.49% during 1989-2017, and it increased most significantly after 2011;2) During 1989-2017, the vegetation coverage of Heitan river basin is generally high in the south and low in the north.Among them, the vegetation coverage in the south increased relatively high in 1989-1996 and 1989-2017;3)During 1989-2017,the vegetation coverage in mid-altitude hilly area of Heitan river basin was high, and the vegetation coverage in small undulating low mountain areas was low,the rise of vegetation in the small undulations low mountainous areas was most obvious.
作者
程东亚
李旭东
安芬
应奎
郭晓芳
龙映豪
方冰轲
CHENG Dongya;LI Xudong;AN Fen;YING Kui;GUO Xiaofang;LONG Yinghao;FANG Bingke(School of Geography and Environmental Science,Guizhou Normal University,Guiyang,Guizhou 550025,China)
出处
《贵州师范大学学报（自然科学版）》
CAS
2020年第1期6-13,57,共9页
Journal of Guizhou Normal University：Natural Sciences
基金
国家自然科学基金(41261039)
关键词
植被覆盖度
地貌
像元二分模型
小流域
vegetation coverage
landform
pixel dichotomy
small watersheds
