Journal
GEODERMA
Volume 407, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.geoderma.2021.115570
Keywords
Common garden experiment; Soil meso-and macrofauna; Abundance; Biomass; Diversity; Taxonomic group; Functional group
Categories
Funding
- National Natural Science Foundation of China [31922052, 31800373]
- China Scholarship Council [201606910045]
- Marie Curie European Fellowship [747824-AFOREST-H2020-MSCA-IF-2016/H2020-MSCA-IF2016]
- Sao Paulo Research Foundation [2015/14785-5, 2017/26019-0]
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Through field studies in six common gardens in Denmark, it was found that tree species identity and mycorrhizal association significantly affect soil fauna communities. Overall, AM tree species and lime tree species have positive effects on soil fauna abundance, biomass, as well as taxonomic and functional diversity. Tree species also significantly influence litter, forest floor, and soil properties.
Forest management, including selection of appropriate tree species to mitigate climate change and sustain biodiversity, requires a better understanding of factors that affect the composition of soil fauna communities. These communities are an integral part of the soil ecosystem and play an essential role in forest ecosystem functioning related to carbon and nitrogen cycling. Here, by performing a field study across six common gardens in Denmark, we evaluated the effects of tree species identity and mycorrhizal association (i.e., arbuscular mycorrhiza (AM) and ectomycorrhiza (ECM)) on soil fauna (meso- and macrofauna) taxonomic and functional community composition by using diversity, abundance, and biomass as proxies. We found that (1) tree species identity and mycorrhizal association both showed significant effects on soil fauna communities, but the separation between community characteristics in AM and ECM tree species was not entirely consistent; (2) total soil fauna abundance, biomass, as well as taxonomic and functional diversity were generally significantly higher under AM tree species, as well as lime, with higher litter quality (high N and base cation and low lignin:N ratio); (3) tree species significantly influenced the properties of litter, forest floor, and soil, among which litter and/or forest floor N, P, Ca, and Mg concentrations, soil pH, and soil moisture predominantly affected soil fauna abundance, biomass, and taxonomic and functional diversity. Our results from this multisite common garden experiment provide strong and consistent evidence of positive effects of tree species with higher litter quality on soil fauna communities in general, which helps to better understand the effects of tree species selection on soil biodiversity and its functions related to forest soil carbon sequestration.
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