摘要
基于武威市2011—2020年MODIS13Q1数据提取16 d的NDVI数据,通过Arcgis像元统计工具计算得到年均NDVI数据,采用回归趋势分析法研究植被覆盖度时空变化、生态适应性和植被地域分布等主要特征。结果表明:武威市植被地域分布特征明显,植被覆盖度整体呈自北向南递增趋势空间分布,高覆盖度主要分布在天祝县南部祁连山山地,中覆盖度主要分布在凉州区、古浪县、民勤县中部绿洲农业区,低覆盖度主要分布在凉州区、古浪县、民勤县北部沙漠腹地,年均NDVI值波动幅度整体平稳,呈上升趋势特征,植被整体生长有明显改善。
Based on the MODIS13 Q1 data of Wuwei City from 2011 to 2020,the 16-day NDVI data was extracted,and the annual average NDVI data was calculated by the ArcGIS pixel statistical tool.The regression trend analysis method was used to study the spatio-temporal changes of vegetation coverage,ecological adaptability,and vegetation geographical distribution.Main features.Result shows that the vegetation area distribution characteristics of Wuwei City are obvious,and the overall vegetation coverage is increasing from north to south.The high coverage is mainly in the Qilian Mountains in the south of Tianzhu County,and the medium coverage is mainly distributed in Liangzhou District and Gulang County.In the oasis agricultural area in the central part of Minqin County,the low coverage is mainly distributed in Liangzhou District,Gulang County,and the northern desert hinterland of Minqin County.The fluctuation range of the average annual NDVI value is generally stable,showing an upward trend,and the overall vegetation growth has been significantly improved.
作者
张玉婷
张祯
马吉虎
Zhang Yuting;Zhang Zhen;Ma Jihu(Gansu Endangered Animal Protection Center of State Forestry and Grassland Administration,Wuwei 733000,China)
出处
《防护林科技》
2022年第1期56-58,63,共4页
Protection Forest Science and Technology
基金
2017武威市市列科技计划项目“武威荒漠化土地合理利用与产业示范”(ww170343)。
