博文

云师大地理学部罗毅、杨昆教授在top期刊《Science of The Total Environment》发表研究成果

已有 1491 次阅读 2024-7-9 22:56 |个人分类:云师大研究|系统分类:论文交流

2024年7月8日，Elsevier 旗下top期刊《Science of The Total Environment》在线发表了云南师范大学地理学部罗毅教授最新研究成果《Response of changes in lake area to drought and land use change》。第一作者为云南师范大学地理学部罗毅教授，通讯作者为云南师范大学地理学部杨昆教授和 Rixiang Chen。

https://www.sciencedirect.com/science/article/abs/pii/S0048969724047879

1-s2.0-S0048969724047879-ga1_lrg.jpg

Abstract

The lake area is a crucial parameter that characterizes the state of a lake. Under the dual pressures of climate change and human activity, the magnitude and frequency of changes in lake areas become more pronounced. This process poses a serious threat to the local ecological environment. In this study, we constructed a lake water extraction model (LakeNet) based on a fully convolutional neural network. We extracted and analyzed the spatiotemporal characteristics of the area of nine major lakes from 1987 to 2022, as well as the driving factors behind these changes. Our results indicate that: 1) LakeNet exhibits high extraction accuracy and can remove some clouds. 2) The area of the nine major lakes shows a fluctuating downward trend (−8.11km2/10a), with drought and land use changes identified as significant driving forces behind the changes in lake boundaries, drought events caused the lake area to decrease, and the expansion of cropland further reduced the lake area. 3) Due to variations in lake area, the impact of drought on the area of the nine major lakes exhibits a lag effect, smaller lakes are likely to respond more quickly to drought.

微信截图_20240709231123.png