species diversity 86 Biodiversity 65 human 61 Diversity 49 Ecosystems 49 nonhuman 49 Article 43 biodiversity 43 Humans 41 article 37 microbial diversity 37 controlled study 36 Forestry 33 species richness 33 female 32 China 29 male 29 adult 28 Conservation 24 community structure 24 diversity 22 microbial community 22 Indicator indicator 20 RNA 16S 18 Ecology 17 Soils 17 plant community 17 Female 16 metagenomics 16 taxonomy 16