近十年黄河流域地表水面积时空变化与影响因素分析
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作者单位:

1.武汉大学遥感信息工程学院;2.武汉大学测绘学院

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中图分类号:

P33

基金项目:

国家重点研发计划项目(2021YFB3900603)


Spatial-Temporal Changes and Influencing Factors of Surface Water in the Yellow River Basin in Recent Ten Years
Author:
Affiliation:

1.School of Remote Sensing and Information Engineering, Wuhan University;2.School of Geodesy and Geomatics, Wuhan University

Fund Project:

the National Key R&D Program of China (Grant No.2021YFB3900603)

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    摘要:

    利用遥感技术研究多年来黄河流域地表水体的时空变化情况,对流域生态文明建设和高质量发展具有重要的现实意义。本文基于Google Earth Engine获取Landsat-8卫星影像,采用随机森林分类法批量生产得到2013—2022年各季度地表水数据集。从时间尺度、空间尺度动态监测黄河流域地表水面积季节性变化趋势与特征,同时探讨了黄河流域地表水面积变化的影响因素。研究表明:近十年黄河流域地表水面积在时间尺度上呈现出缓慢增加的趋势,且存在明显的季节性差异。在空间尺度上呈现出“中部少,四周多”的分布特征。上游区域受气候与人类活动等多重因素影响,地表水面积变化与气候因素相关性相对较小;中下游区域地表水面积与降水量、地表温度均呈正相关。

    Abstract:

    Utilizing remote sensing technology to investigate the spatiotemporal changes of surface water bodies in the Yellow River Basin over the years holds significant practical significance for the development of ecological civilization and high-quality growth in the basin. This study is based on Google Earth Engine to acquire Landsat-8 satellite imagery and utilizes the random forest classification method for efficient production of quarterly surface water datasets from 2013 to 2022. By dynamically monitoring the seasonal trends and characteristics of surface water area in the Yellow River Basin at both temporal and spatial scales, it also delves into the factors influencing the changes in surface water area. The findings of the research indicate that over the past decade, there has been a gradual upward trend in surface water area in the Yellow River Basin at the temporal scale, accompanied by noticeable seasonal disparities. At the spatial scale, a distinct distribution pattern emerges, characterized by "less in the central region and more in the surrounding areas". The upstream region is influenced by a multitude of factors such as climate conditions and human activities, with surface water area changes showing relatively weak correlation with climate factors. Conversely, in the middle and downstream regions, surface water area exhibits a positive correlation with both precipitation levels and surface temperature.

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  • 收稿日期:2023-08-22
  • 最后修改日期:2024-03-01
  • 录用日期:2024-03-13
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