Earth Sciences

Global cycling and climate effects of aeolian dust controlled by biological soil crusts

E. Rodriguez-caballero, T. Stanelle, et al.

Discover how biological soil crusts can dramatically curb global dust emissions by about 60%, based on groundbreaking research by E. Rodriguez-Caballero and colleagues. This study reveals the potential consequences of climate change on these vital ecosystems and their crucial role in maintaining our planet's health.

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Abstract

Biological soil crusts (biocrusts) cover approximately 12% of the global land surface and significantly reduce global atmospheric dust emissions. This study combines experimental data with a global climate model to quantify biocrusts' impact on dust cycling under current and future conditions. Results indicate biocrusts reduce global dust emissions by ~60%, preventing the release of ~0.7 Pg dust annually. Projected biocrust loss due to climate change and land-use intensification will increase dust burden, reducing the global radiation budget by 0.12 to 0.22 W m⁻², significantly impacting climate, ecosystems, and human health.

Publisher

Nature Geoscience

Published On

May 16, 2022

Authors

E. Rodriguez-Caballero, T. Stanelle, S. Egerer, Y. Cheng, H. Su, Y. Canton, J. Belnap, M. O. Andreae, I. Tegen, C. H. Reick, U. Pöschl, B. Weber

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