亚马逊雨林在调节地球能量与水循环中发挥着关键作用。然而，森林砍伐的全部生物物理影响仍未明确，特别是通过云所介导的部分。
利用二十年的多源卫星观测数据，研究组分离出森林损失的生物物理信号，并展示了整合地表与大气效应的全天空生物物理反馈观测结果。结果发现，短波和长波辐射通量中的大气层顶（TOA）冷却效应与森林损失率呈线性关系，其中短波占主导。
在高森林损失区域，短波TOA冷却达到6.8±0.6瓦/平方米，而云驱动的反照率增加使其相比于仅地表增亮的情况提升了一倍。这些发现强调了云响应在估算森林覆盖变化对气候影响中的重要性，并支持将其纳入气候模型与土地管理政策中。
附：英文原文
Title: Amazon forest loss: An all-sky biophysical top-of-atmosphere cooling feedback
Author: Tom Dror, Graham Feingold
Issue&Volume: 2026-04-23
Abstract: The Amazon rainforest plays a crucial role in regulating Earth’s energy and water cycles. The full biophysical impact of deforestation, particularly when mediated by clouds, remains elusive. Using two decades of multisource satellite observations, we isolate biophysical signals of forest loss and present an observation of the all-sky biophysical feedback that integrates surface and atmospheric effects. We find that top-of-atmosphere (TOA) cooling in shortwave and longwave fluxes scales with forest loss fraction, with shortwave dominating. In high-loss areas, shortwave TOA cooling reaches 6.8 ± 0.6 watts per square meter, with cloud-driven albedo increases doubling the effect relative to surface brightening alone. These findings underscore the importance of cloud responses in estimating the climatic impact of forest cover change and support their integration into climate models and land-management policies.
DOI: adz8296
Source: https://www.science.org/doi/10.1126/science.adz8296