Comparative Evaluation of the Spectral and Spatial Consistency of Sentinel-2 and Landsat-8 OLI Data for Igneada Longos Forest

被引:46
作者
Arekhi, Maliheh [1 ]
Goksel, Cigdem [2 ]
Sanli, Fusun Balik [3 ]
Senel, Gizem [4 ]
机构
[1] Istanbul Univ Cerrahpasa, Inst Sci, Grad Educ Inst, Forest Engn, TR-34452 Istanbul, Turkey
[2] Istanbul Tech Univ, Fac Civil Engn, Dept Geomat Engn, TR-34469 Istanbul, Turkey
[3] Yildiz Tech Univ, Fac Civil Engn, Dept Geomat Engn, TR-34220 Istanbul, Turkey
[4] Istanbul Tech Univ, Inst Sci & Technol, Dept Geomat Engn, TR-34469 Istanbul, Turkey
来源
ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION | 2019年 / 8卷 / 02期
关键词
flooded forests; Sentinel-2A; Landsat-8; OLI; spectral consistency; NDVI; NDWI; EVI; REAL TIME DETECTION; FLOODPLAIN FORESTS; BEETLE INFESTATION; VEGETATION INDEX; MANGROVE; DIVERSITY; REGION; WATER; NDVI;
D O I
10.3390/ijgi8020056
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This study aims to test the spectral and spatial consistency of Sentinel-2 and Landsat-8 OLI data for the potential of monitoring longos forests for four seasons in Igneada, Turkey. Vegetation indices, including Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI) and Normalized Difference Water Index (NDWI), were generated for the study area in addition to the five corresponding bands of Sentinel-2 and Landsat-8 OLI Images. Although the spectral consistency of the data was interpreted by cross-calibration analysis using the Pearson correlation coefficient, spatial consistency was evaluated by descriptive statistical analysis of investigated variables. In general, the highest correlation values were achieved for the images that were acquired in the spring season for almost all investigated variables. In the spring season, among the investigated variables, the Red band (B4), NDVI and EVI have the largest correlation coefficients of 0.94, 0.92 and 0.91, respectively. Regarding the spatial consistency, the mean and standard deviation values of all variables were consistent for all seasons except for the mean value of the NDVI for the fall season. As a result, if there is no atmospheric effect or data retrieval/acquisition error, either Landsat-8 or Sentinel-2 can be used as a combination or to provide the continuity data in longos monitoring applications. This study contributes to longos forest monitoring science in terms of remote sensing data analysis.
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页数:13
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