Scholarlink

<p>Many lakes have exhibited substantial variability in recent years, making “lake drought” a growing concern. However, there is no established framework for identifying and studying lake droughts. Here, we propose a reliable definition for it and provide a global assessment of over 160,000 lakes (≥1 km<sup>2</sup>) using monthly area data from 1985 to 2018. Our findings show that 15.7% of lakes have experienced statistically significant increasing trends in drought frequency (<i>p</i> &lt; 0.05), with hotspots in the Southern United States at 52.7% and Southeast Australia at 70.4%. Furthermore, we identify two severe lake drought events in the Southern United States (2012–2014) and Southeast Australia (2007–2010), posing dramatic threats to water supplies, biodiversity, and ecological health. Rising trends in lake drought are driven by increasing temperature, vapor pressure deficit, and factors associated with the lake water cycle, such as precipitation deficit, increased evaporation, and excessive water withdrawal.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Global assessment and hotspots of lake drought

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年4月21日

查看全文
  • Xing Cheng,
  • Shuo Wang,
  • Jianli Chen,
  • Amir AghaKouchak

摘要

Many lakes have exhibited substantial variability in recent years, making “lake drought” a growing concern. However, there is no established framework for identifying and studying lake droughts. Here, we propose a reliable definition for it and provide a global assessment of over 160,000 lakes (≥1 km2) using monthly area data from 1985 to 2018. Our findings show that 15.7% of lakes have experienced statistically significant increasing trends in drought frequency (p < 0.05), with hotspots in the Southern United States at 52.7% and Southeast Australia at 70.4%. Furthermore, we identify two severe lake drought events in the Southern United States (2012–2014) and Southeast Australia (2007–2010), posing dramatic threats to water supplies, biodiversity, and ecological health. Rising trends in lake drought are driven by increasing temperature, vapor pressure deficit, and factors associated with the lake water cycle, such as precipitation deficit, increased evaporation, and excessive water withdrawal.