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2025, 06, v.41 33-40
近40年来坝上高原湖淖面积变化及其驱动力分析
基金项目(Foundation): 河北省科学院科技计划项目(25A13)
邮箱(Email): hberc@126.com;
DOI:
摘要:

基于Landsat遥感数据提取1984—2022年坝上高原湖淖水面分布数据,结合气象和人类活动数据,采用趋势分析、多元回归等方法系统分析坝上高原湖淖的时空变化特征及其驱动因素,并量化各驱动因子的贡献。结果表明:(1)1984—2022年坝上高原湖淖总体呈萎缩退化趋势,面积减幅近50%,经历了显著扩张—极显著萎缩—剧烈波动—缓慢恢复4个阶段的变化,湖淖萎缩主要受较大湖淖的萎缩、消亡影响,高原湖淖趋于小型化和破碎化。(2)空间分布上,西部湖淖消亡、萎缩特征异常显著,中部湖淖有所扩张,东部湖淖新增明显,高原西部湖淖的变化主导了整个高原的湖淖变化趋势。(3)气候变化对湖淖面积变化的贡献较小,人类活动是湖淖萎缩的主要驱动力,其中蔬菜产量与湖淖面积的相关系数(-0.82)最大,对湖淖萎缩的贡献率为55.6%。由此推断,1996年后高耗水蔬菜产业的快速扩张是导致坝上高原湖淖萎缩退化的主要原因。

Abstract:

Based on Landsat remote sensing data, this study extracted the water surface distribution data of lakes on the Bashang Plateau from 1984 to 2022.Integrating meteorological data and human activity data, we systematically analyzed the spatiotemporal variation characteristics of these lakes and their driving factors using trend analysis and multiple regression methods, and quantified the contribution of each driving factor.It is found as follows.(1) From 1984 to 2022,the lakes on the Bashang Plateau generally showed a trend of shrinkage and degradation, with the total area decreasing by nearly 50%.The changes underwent four distinct stages: significant expansion, extremely significant shrinkage, dramatic fluctuation, and slow recovery.The overall shrinkage was primarily influenced by the contraction and disappearance of larger lakes, leading to a trend of miniaturization and fragmentation of the plateau lakes.(2) Spatially, the shrinkage and disappearance of lakes in the western area were highly pronounced, while lakes in the central area showed some expansion, and new lakes emerged notably in the eastern area.The changes in the western lakes dominated the overall trend of lake changes across the plateau.(3) Climate change contributed relatively little to the changes in lake area.Human activities were the main driving force behind lake shrinkage, among which vegetable production showed the highest correlation coefficient(-0.82) with lake area and contributed 55.6% to the lake shrinkage.It is inferred that the rapid expansion of the high-water-consumption vegetable industry after 1996 was the primary reason for the shrinkage and degradation of the lakes on the Bashang Plateau.

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(1)https://mp.weixin.qq.com/s/dvbRspaefhiyEBPk1DTtpA[2024-08-18]

(2)http://hb.zjk.gov.cn/xxgk/content.thtml?contentId=228244[2024-08-09]

基本信息:

中图分类号:P237;P343.3

引用信息:

[1]王瑞君,李庆,李秀娟,等.近40年来坝上高原湖淖面积变化及其驱动力分析[J].地理与地理信息科学,2025,41(06):33-40.

基金信息:

河北省科学院科技计划项目(25A13)

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