species diversity 86 Biodiversity 66 human 61 Diversity 58 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 Ecology 18 RNA 16S 18 Soils 17 plant community 17 Education 16 Female 16 metagenomics 16