摘要
基于宜春市Landsat 7/Landsat 88天合成NDVI产品,在GEE(Google Earth Engine)平台进行数据处理,使用一元线性趋势分析方法对宜春市2010年-2020年间植被NDVI数据进行时空变化特征分析。研究结果表明,宜春市在2010年-2020年间NDVI整体呈下降趋势;空间上NDVI分布情况为“西北高、东南低”;2010年-2013年全年NDVI数据波动很明显,NDVI高值出现时间段为每年七八月份。
Based on the Landsat 7/Landsat 88-day synthetic NDVI products of Yichun City,the data are processed on the GEE(Google Earth Engine)platform,and the spatial and temporal variation characteristics of the vegetation NDVI data during 2010-2020 are analyzed using the one-dimensional linear trend analysis method.The following results are obtained:(1)the overall trend of NDVI in Yichun is decreasing during 2010-2020;(2)spatially,the distribution of NDVI is“high in the northwest and low in the southeast”;(3)there are obvious data fluctuations from 2010 to 2013,and the high values come during July and August each year.
作者
彭渊
彭咏石
张军
PENG Yuan;PENG Yongshi;ZHANG Jun(Jiangxi Ganxi Civil Engineering Survey and Design Institute,Yichun 336000,China;School of Geomatics,East China University of Technology,Nanchang 330013,China)
出处
《江西测绘》
2023年第1期33-35,46,共4页
JIANGXI CEHUI
