Experts estimate that around how many million acres of tree-covered land is considered at risk of mortality?

The estimate of approximately 81 million acres of tree-covered land being considered at risk of mortality is grounded in research that evaluates various ecological threats, including climate change, pests, and diseases that can lead to tree decline and death. This figure highlights the significant concern for forest health across diverse landscapes, signaling the need for conservation efforts and management practices aimed at mitigating these risks. Understanding the scale of this issue is crucial for developing strategies to protect and enhance forest ecosystems, which play vital roles in biodiversity, carbon storage, and overall ecological balance. The choice of 81 million illustrates the considerable extent of forest areas that require monitoring and protective actions to prevent devastating outcomes that could affect wildlife habitats and climate regulation.