Mapping of lakes in the Qinghai-Tibet Plateau from 2016 to 2021: trend and potential regularity
Lakes over the Qinghai-Tibet Plateau (TP) have large quantities and areas. As an important component of fragile plateau ecosystems, these lakes have attracted increasing attention. However, owing to the limitations of technology and methods, changes in smaller lakes on the TP have received less atte...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-12-01
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| Series: | International Journal of Digital Earth |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/17538947.2022.2131008 |
| _version_ | 1797678470001590272 |
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| author | Zhichong Yang Si-Bo Duan Xiaoai Dai Yingwei Sun Meng Liu |
| author_facet | Zhichong Yang Si-Bo Duan Xiaoai Dai Yingwei Sun Meng Liu |
| author_sort | Zhichong Yang |
| collection | DOAJ |
| description | Lakes over the Qinghai-Tibet Plateau (TP) have large quantities and areas. As an important component of fragile plateau ecosystems, these lakes have attracted increasing attention. However, owing to the limitations of technology and methods, changes in smaller lakes on the TP have received less attention. In this study, we used Google Earth Engine (GEE) with the Analysis Ready Data (ARD) preparation framework to obtain preprocessed Sentinel-1 data covering the plateau. The D-LinkNet framework was introduced to achieve lake extraction, and the lake dataset was completed from 2016 to 2021. The lake dataset showed an area accuracy of 86.49% and Intersection over Union (IoU) of 0.72-0.99 in different regions. The findings were as follows: during the study period, the TP lakes tended to be stable after increasing, with an increase in area and number of +7.6% and +14.8%. Except for the northwest TP, the other regions show the same general trend. In particular, the Tarim Basin exhibited a lake variation pattern independent of the TP. Significantly, we found frequent lake activity in the Kunlun Mountains, Qaidam Basin, Mountain Qogir, etc. Effects of the ongoing La Niña event on the TP lakes may occur in the next few years. |
| first_indexed | 2024-03-11T23:00:14Z |
| format | Article |
| id | doaj.art-17ea6d30d0e94e5ab242d07e7225477d |
| institution | Directory Open Access Journal |
| issn | 1753-8947 1753-8955 |
| language | English |
| last_indexed | 2024-03-11T23:00:14Z |
| publishDate | 2022-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | International Journal of Digital Earth |
| spelling | doaj.art-17ea6d30d0e94e5ab242d07e7225477d2023-09-21T14:57:11ZengTaylor & Francis GroupInternational Journal of Digital Earth1753-89471753-89552022-12-011511692171410.1080/17538947.2022.21310082131008Mapping of lakes in the Qinghai-Tibet Plateau from 2016 to 2021: trend and potential regularityZhichong Yang0Si-Bo Duan1Xiaoai Dai2Yingwei Sun3Meng Liu4College of Earth Science, Chengdu University of technologyInstitute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural SciencesCollege of Earth Science, Chengdu University of technologyInstitute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural SciencesInstitute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural SciencesLakes over the Qinghai-Tibet Plateau (TP) have large quantities and areas. As an important component of fragile plateau ecosystems, these lakes have attracted increasing attention. However, owing to the limitations of technology and methods, changes in smaller lakes on the TP have received less attention. In this study, we used Google Earth Engine (GEE) with the Analysis Ready Data (ARD) preparation framework to obtain preprocessed Sentinel-1 data covering the plateau. The D-LinkNet framework was introduced to achieve lake extraction, and the lake dataset was completed from 2016 to 2021. The lake dataset showed an area accuracy of 86.49% and Intersection over Union (IoU) of 0.72-0.99 in different regions. The findings were as follows: during the study period, the TP lakes tended to be stable after increasing, with an increase in area and number of +7.6% and +14.8%. Except for the northwest TP, the other regions show the same general trend. In particular, the Tarim Basin exhibited a lake variation pattern independent of the TP. Significantly, we found frequent lake activity in the Kunlun Mountains, Qaidam Basin, Mountain Qogir, etc. Effects of the ongoing La Niña event on the TP lakes may occur in the next few years.http://dx.doi.org/10.1080/17538947.2022.2131008sentinel-1qinghai-tibet plateaulake mappinggoogle earth enginedeep learning |
| spellingShingle | Zhichong Yang Si-Bo Duan Xiaoai Dai Yingwei Sun Meng Liu Mapping of lakes in the Qinghai-Tibet Plateau from 2016 to 2021: trend and potential regularity International Journal of Digital Earth sentinel-1 qinghai-tibet plateau lake mapping google earth engine deep learning |
| title | Mapping of lakes in the Qinghai-Tibet Plateau from 2016 to 2021: trend and potential regularity |
| title_full | Mapping of lakes in the Qinghai-Tibet Plateau from 2016 to 2021: trend and potential regularity |
| title_fullStr | Mapping of lakes in the Qinghai-Tibet Plateau from 2016 to 2021: trend and potential regularity |
| title_full_unstemmed | Mapping of lakes in the Qinghai-Tibet Plateau from 2016 to 2021: trend and potential regularity |
| title_short | Mapping of lakes in the Qinghai-Tibet Plateau from 2016 to 2021: trend and potential regularity |
| title_sort | mapping of lakes in the qinghai tibet plateau from 2016 to 2021 trend and potential regularity |
| topic | sentinel-1 qinghai-tibet plateau lake mapping google earth engine deep learning |
| url | http://dx.doi.org/10.1080/17538947.2022.2131008 |
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