Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.3390/s19102401
Lizenz creative commons licence
Titel (primär) Using of multi-source and multi-temporal remote sensing data improves crop-type mapping in the subtropical agriculture region
Autor Sun, C.; Bian, Y.; Zhou, T.; Pan, J.
Quelle Sensors
Erscheinungsjahr 2019
Department CLE
Band/Volume 19
Heft 10
Seite von art. 2401
Sprache englisch
Keywords remote sensing; Sentinel-1; Sentinel-2; Landsat-8; crop mapping; urban agriculture region; phenology
Abstract Crop-type identification is very important in agricultural regions. Most researchers in this area have focused on exploring the ability of synthetic-aperture radar (SAR) sensors to identify crops. This paper uses multi-source (Sentinel-1, Sentinel-2, and Landsat-8) and multi-temporal data to identify crop types. The change detection method was used to analyze spectral and indices information in time series. Significant differences in crop growth status during the growing season were found. Then, three obviously differentiated time features were extracted. Three advanced machine learning algorithms (Support Vector Machine, Artificial Neural Network, and Random Forest, RF) were used to identify the crop types. The results showed that the detection of (Vertical-vertical) VV, (Vertical-horizontal) VH, and Cross Ratio (CR) changes was effective for identifying land cover. Moreover, the red-edge changes were obviously different according to crop growth periods. Sentinel-2 and Landsat-8 showed different normalized difference vegetation index (NDVI) changes also. By using single remote sensing data to classify crops, Sentinel-2 produced the highest overall accuracy (0.91) and Kappa coefficient (0.89). The combination of Sentinel-1, Sentinel-2, and Landsat-8 data provided the best overall accuracy (0.93) and Kappa coefficient (0.91). The RF method had the best performance in terms of identity classification. In addition, the indices feature dominated the classification results. The combination of phenological period information with multi-source remote sensing data can be used to explore a crop area and its status in the growing season. The results of crop classification can be used to analyze the density and distribution of crops. This study can also allow to determine crop growth status, improve crop yield estimation accuracy, and provide a basis for crop management.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=21996
Sun, C., Bian, Y., Zhou, T., Pan, J. (2019):
Using of multi-source and multi-temporal remote sensing data improves crop-type mapping in the subtropical agriculture region
Sensors 19 (10), art. 2401 10.3390/s19102401