2026-10-12T21:28:24Z https://www.scidb.cn/oai

10.57760/sciencedb.23115 2026-07-09T09:46:53Z

2026-07-09 Functional diversity mediates the nonlinear relationship between tree species richness and soil denitrification in young subtropical forests doi:10.57760/sciencedb.23115 en This dataset contains data from a comprehensive large-scale experiment conducted in subtropical forests, investigating how tree species richness and its mediation by functional structure (functional identity and diversity) influence soil denitrification potential (DNP). The study found a unimodal relationship between tree species richness and DNP, with the peak at four species. This pattern was driven by functional diversity (functional dispersion of leaf dry matter content), which enhanced community productivity (ground basal area) and indirectly elevated DNP via increased soil moisture, nirK gene abundance, and reduced soil C:N ratios. Functional identity also significantly impacted DNP, with communities dominated by resource-conservative species exhibiting stronger denitrification. biodiversity-ecosystem functions; functional traits; mass-ratio hypothesis; niche complementarity hypothesis; soil nitrogen cycle Lulu He Haoyan Xiao Yongfeng Jia Yingying Cui Mengjuan Wang Yanrong Fu Xiaohua Wan Linfeng Li Zhiqun Huang PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank