| 引用本文: | 殷永胜,王欣,刘时银,郭小宇,张勇,冉伟杰,王琼.1990—2020年中国冰湖变化特征及影响因素.湖泊科学,2023,35(1):358-367. DOI:10.18307/2023.0128 |
| Yin Yongsheng,Wang Xin,Liu Shiyin,Guo Xiaoyu,Zhang Yong,Ran Weijie,Wang Qiong.Characteristics and influence factors of the glacial lake changes in China from 1990 to 2020. J. Lake Sci.2023,35(1):358-367. DOI:10.18307/2023.0128 |
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| 1990—2020年中国冰湖变化特征及影响因素 |
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殷永胜1, 王欣1,2, 刘时银3, 郭小宇1, 张勇1, 冉伟杰1, 王琼1
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1.湖南科技大学地球科学与空间信息工程学院, 湘潭 411201;2.中国科学院西北生态环境资源研究院, 冰冻圈科学国家重点实验室, 兰州 730000;3.云南大学国际河流与生态安全研究院, 昆明 650091
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| 摘要: |
| 本文基于505 景Landsat卫星影像,通过自动化冰湖边界提取与人工目视解译相结合的方法调查了2000和2020 年中国境内冰湖的分布与变化,并结合1990 年冰湖编目数据,分析中国冰湖变化特征及影响因素。研究表明,1990—2020 年中国冰湖面积增加(180.1±0.1) km2,增加了17.9%。其中,冰川补给湖面积扩张最显著,为22.9%,而非冰川补给湖的面积仅扩张4.9%。1990—2020 年冰湖面积在较高海拔带呈现增长快速的趋势,其中,在海拔5500 m以上冰湖面积扩张最大,达30.5%。在区域尺度,非冰川补给湖的变化主要受降水量和蒸发量变化的影响,其中蒸发量变化对非冰川补给湖更为显著;气温升高与冰川普遍退缩则是导致冰川补给湖普遍快速扩张的主要原因。 |
| 关键词: 中国冰湖 冰湖编目 冰湖面积变化 影响因素 |
| DOI：10.18307/2023.0128 |
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| 基金项目:国家自然科学基金项目(42171137,42171134)资助。 |
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| Characteristics and influence factors of the glacial lake changes in China from 1990 to 2020 |
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Yin Yongsheng1, Wang Xin1,2, Liu Shiyin3, Guo Xiaoyu1, Zhang Yong1, Ran Weijie1, Wang Qiong1
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1.College of Earth Science and Space Information Engineering, Hunan University of Science and Technology, Xiangtan 411201, P. R. China;2.State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resource, Chinese Academy of Sciences, Lanzhou 730000, P. R. China;3.Institute of International Rivers and Eco-security, Yunnan University, Kunming 650091, P. R. China
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| Abstract: |
| Based on 505 scenes of Landsat images, the distributions and variations of the glacial lakes within Chinese territory were investigated by combining automated glacial lake boundary extraction and artificial visual interpretation in 2000 and 2020. Compared with the glacial lake inventory data in 1990, the characteristics and affecting factors of the glacial lake changes in China during the period of 1990-2020 were analyzed. The results showed that the glacial lake area in China increased by (180.1±0.1) km2 from 1990 to 2020, with a change of 17.9%. Thereinto, the glacier-fed lake area expanded significantly, with the area expansion of 22.9%, while the non-glacier-fed lake area changed only 4.9%. The glacial lake area showed a rapid growth trend at high altitude during 1990-2020. During this period, the glacial lake area expanded the most at above 5500 m, reaching 30.5%. At the subregional scale, precipitation and evaporation mainly affect the changes of non-glacier-fed lakes, where evaporation played a more significant role. Temperature rise and glacier retreat are the main reasons for rapid expansion of glacier-fed lakes. |
| Key words: Glacial lakes in China glacial lake inventory glacial lake area change influence factors |
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