Biogenic volatile organic compounds (BVOCs) are critical components linking terrestrial ecosystems with the atmospheric environment for gas exchange and information transfer, and they have played essential roles in biogeochemical cycles, climate change, and ecosystem functioning. Soil ecosystems serve as both significant sources and indispensable potential sinks for atmospheric BVOCs. In this review, the progress in soil BVOCs research was systematically synthesized. Their main sources in soil (soil organic matter, litter decomposition, plant roots, and microbial metabolism) and soil sink pathways (atmospheric dry and wet deposition, physical adsorption and dissolution, and microbial degradation) were highlighted. Furthermore, the seasonal variations and ecosystem-specific differences in soil BVOCs flux were summarized, and the potential mechanisms of soil BVOCs source-sink dynamics in the context of global climate change (warming, drought, and nitrogen deposition) were explored. Finally, current research gaps were elucidated, and future key research directions were proposed, aiming to provide new insights for a comprehensive understanding of the role of BVOCs in soil biogeochemical cycling processes.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |