Data associated with: Drought response of trees: Differences across Mycorrhizal type at the global scale

The association with mycorrhizal fungi, predominantly arbuscular mycorrhizal (AM) fungi or ectomycorrhizal (EM) fungi, is a critical strategy for trees to cope with drought stress, one of the most pervasive stressors affecting forest dynamics. Although experimental evidence suggests varying drought responses among trees with different mycorrhizal associations, a quantitative large-scale synthesis is still lacking. In this study, we compiled global datasets encompassing three types of drought responses (drought-induced mortality, growth reduction by severe droughts, and growth recovery from severe droughts) and tested the differences in these drought responses between the two mycorrhizal types using spatial autoregressive models. To elucidate the significant variations in drought responses, we identified key influential climatic factors, edaphic (soil-related) factors, and species-specific traits using model selection based on Akaike information criterion. Globally, EM trees experienced ..., Drought-response dataset compilation
Global datasets of three aspects of tree drought responses were compiled: drought-induced mortality, growth reduction by severe drought and growth recovery from severe drought.
In the current study, we defined drought from an ecological perspective. That is, droughts are the events in which the water supply from precipitation falls below plant water demand. Therefore, the standardized precipitation evapotranspiration index (SPEI) is an ideal drought metric for our study. SPEI is a site-specific drought indicator that involves both precipitation and plant potential evapotranspiration (Vicente-Serrano et al. 2010; Beguería et al. 2022). It has been widely used in ecological studies and has demonstrated superior capability to capture drought impact at the global scale than the conventional Palmer drought indices (PDIs). Additionally, SPEI has exhibited better performance in capturing ecosystems’ responses to summer droughts than the widely used standard..., , # Data Associated with: Trees with different mycorrhizal types show differential drought responses at the global scale

[https://doi.org/10.5061/dryad.95x69p8rx](https://doi.org/10.5061/dryad.95x69p8rx)

This dataset includes five data sheets that were used for data analyses. The first data sheet is named as “Data S1-Species Mycorrhiza Type Data.xlsx”. The second data sheet is named as “Data S2-Mortality Dataset.xlsx”. The third data sheet is named as “Data S3-Growth Response Data.xlsx”. The fourth is “Data S4-Trait Values and References for 453 Study Species.xlsx”. The fifth is “Data S5-Climatic and Edaphic Data.xlsx”.

## Description of the data and file structure

**(1) Data S1-Species Mycorrhiza Type Data.xlsx**

This contains the mycorrhizal association statuses for the 453 species used in the current study, which was based on the FungalRoot Database (Soudzilovskaia et al., 2020). “NA” indicates that focal data or information is not available.

ScientificName_WFO = standardized spe...,