Scholarlink

<p>Rapid-onset flash droughts may cause devastating impacts on both ecosystems and human communities. We found that widely used multispectral satellite methods typically failed to capture the initial physiological response of forests to flash drought. Using a 3D radiative transfer model, we showed that canopy reflectance remained largely unchanged in the early stages of flash drought, even when upper-canopy leaves were wilting. We developed a new method based on a two-source energy balance model (TSEB-SM) driven by satellite infrared and soil moisture observations to capture water-flux dynamics in forests affected by flash drought. TSEB-SM tracked early-stage flash drought dynamics in China, where 8-daily transpiration declined by mean values of 14% (summer) and 6% (autumn) during the first two weeks of flash drought. Our results demonstrate that satellite-driven energy balance models can accurately track the temporal response of forests to flash drought, providing new tools for forest management in a warming climate.</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

Early forest water stress detection using thermal infrared energy balance modeling during flash drought

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年6月2日

查看全文
  • Lisheng Song,
  • Zhiwen Guan,
  • Michael Liddell,
  • Bin He,
  • Jingfeng Xiao,
  • Yan Li,
  • Aoxiang Guo,
  • Jianbo Qi,
  • Peipei Xu,
  • Fengman Fang,
  • Kaifang Shi,
  • Dong Chu,
  • Xuguang Tang,
  • Shaomin Liu

摘要

Rapid-onset flash droughts may cause devastating impacts on both ecosystems and human communities. We found that widely used multispectral satellite methods typically failed to capture the initial physiological response of forests to flash drought. Using a 3D radiative transfer model, we showed that canopy reflectance remained largely unchanged in the early stages of flash drought, even when upper-canopy leaves were wilting. We developed a new method based on a two-source energy balance model (TSEB-SM) driven by satellite infrared and soil moisture observations to capture water-flux dynamics in forests affected by flash drought. TSEB-SM tracked early-stage flash drought dynamics in China, where 8-daily transpiration declined by mean values of 14% (summer) and 6% (autumn) during the first two weeks of flash drought. Our results demonstrate that satellite-driven energy balance models can accurately track the temporal response of forests to flash drought, providing new tools for forest management in a warming climate.