Climate Change Data Portal
DOI | 10.1080/01431161.2018.1558376 |
Usability of one-class classification in mapping and detecting changes in bare peat surfaces in the tundra | |
Rasanen, Aleksi1,2,3; Elsakov, Vladimir4; Virtanen, Tarmo1,2 | |
发表日期 | 2019 |
ISSN | 0143-1161 |
EISSN | 1366-5901 |
卷号 | 40期号:11页码:4083-4103 |
英文摘要 | Arctic areas have experienced greening and changes in permafrost caused by climate change during recent decades. However, there has been a lack of automated methods in mapping changes in fine-scale patterns of permafrost landscapes. We mapped areal coverage of bare peat areas and changes in them in a peat plateau located in north-western Russia between 2007 and 2015. We utilized QuickBird and WorldView-3 satellite image data in an object-based setting. We compared four different one-class classifiers (one-class support vector machine, binary support vector machine, random forest, rotation forest) both in a fully supervised binary setting and with positive and unlabelled training data. There was notable variation in classification performance. The bare peat area F-score varied between 0.77 and 0.96 when evaluated by cross-validated training data and between 0.22 and 0.57 when evaluated by independent test data. Overall, random forest performed the most robustly but all classifiers performed well in some classifications. During the 8 year period, there was a 21%-26% decrease in the bare peat areal coverage. We conclude that (1) tested classifiers can be used in one-class settings and (2) there is a need to develop methods for tracking changes in single land cover types. |
WOS研究方向 | Remote Sensing ; Imaging Science & Photographic Technology |
来源期刊 | INTERNATIONAL JOURNAL OF REMOTE SENSING |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/91160 |
作者单位 | 1.Univ Helsinki, Ecosyst & Environm Res Programme, Fac Biol & Environm Sci, POB 65, FI-00014 Helsinki, Finland; 2.Univ Helsinki, Helinski Inst Sustainabil Sci HELSUS, POB 65, FI-00014 Helsinki, Finland; 3.Norwegian Univ Sci & Technol, Dept Geog, Trondheim, Norway; 4.Russian Acad Sci, Ural Branch, Komi Sci Ctr, Inst Biol, Syktyvkar, Komi Republic, Russia |
推荐引用方式 GB/T 7714 | Rasanen, Aleksi,Elsakov, Vladimir,Virtanen, Tarmo. Usability of one-class classification in mapping and detecting changes in bare peat surfaces in the tundra[J],2019,40(11):4083-4103. |
APA | Rasanen, Aleksi,Elsakov, Vladimir,&Virtanen, Tarmo.(2019).Usability of one-class classification in mapping and detecting changes in bare peat surfaces in the tundra.INTERNATIONAL JOURNAL OF REMOTE SENSING,40(11),4083-4103. |
MLA | Rasanen, Aleksi,et al."Usability of one-class classification in mapping and detecting changes in bare peat surfaces in the tundra".INTERNATIONAL JOURNAL OF REMOTE SENSING 40.11(2019):4083-4103. |
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