编号：CDUT-2023-60

标题：Mapping of lakes in the Qinghai-Tibet Plateau from 2016 to 2021: trend and potential regularity

入藏号：WOS:000863818300001

中国科学院文献情报中心期刊分区：地球科学1区/TOP（2022）

本校作者：杨智崇; 戴晓爱*

来源出版物：INTERNATIONAL JOURNAL OF DIGITAL EARTH  卷: 15  期: 1  页: 1692-1714

出版年：2022

第一地址：成都理工大学

关键词：Sentinel-1;Qinghai-Tibet ;Plateaulake mapping;Google Earth Engine;deep learning

代表图：

摘要：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 Nina event on the TP lakes may occur in the next few years.

文章链接地址: https://www.tandfonline.com/doi/abs/10.1080/17538947.2022.2131008