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Remote Sens. 2017, 9(6), 557; doi:10.3390/rs9060557

Mapping Plastic-Mulched Farmland with Multi-Temporal Landsat-8 Data

Key Laboratory of Agricultural Remote Sensing, Ministry of Agriculture, China. (AGRIRS)/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, No. 12, Zhongguancun Nan Dajie, Haidian District, Beijing 100081, China
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Academic Editors: Yoshio Inoue and Prasad S. Thenkabail
Received: 18 March 2017 / Revised: 24 May 2017 / Accepted: 29 May 2017 / Published: 3 June 2017
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Abstract

Using plastic mulching for farmland is booming around the world. Despite its benefit of protecting crops from unfavorable conditions and increasing crop yield, the massive use of the plastic-mulching technique causes many environmental problems. Therefore, timely and effective mapping of plastic-mulched farmland (PMF) is of great interest to policy-makers to leverage the trade-off between economic profit and adverse environmental impacts. However, it is still challenging to implement remote-sensing-based PMF mapping due to its changing spectral characteristics with the growing seasons of crops and geographic regions. In this study, we examined the potential of multi-temporal Landsat-8 imagery for mapping PMF. To this end, we gathered the information of spectra, textures, indices, and thermal features into random forest (RF) and support vector machine (SVM) algorithms in order to select the common characteristics for distinguishing PMF from other land cover types. The experiment was conducted in Jizhou, Hebei Province. The results demonstrated that the spectral features and indices features of NDVI (normalized difference vegetation index), GI (greenness index), and textural features of mean are more important than the other features for mapping PMF in Jizhou. With that, the optimal period for mapping PMF is in April, followed by May. A combination of these two times (April and May) is better than later in the season. The highest overall, producer’s, and user’s accuracies achieved were 97.01%, 92.48%, and 96.40% in Jizhou, respectively. View Full-Text
Keywords: mapping plastic-mulched farmland; multi-temporal Landsat-8 imagery; spectral feature; textural feature; indices features; thermal feature mapping plastic-mulched farmland; multi-temporal Landsat-8 imagery; spectral feature; textural feature; indices features; thermal feature
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Hasituya; Chen, Z. Mapping Plastic-Mulched Farmland with Multi-Temporal Landsat-8 Data. Remote Sens. 2017, 9, 557.

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