AUTHOR=Wang Ruili , Yu Guirui , He Nianpeng TITLE=Root Community Traits: Scaling-Up and Incorporating Roots Into Ecosystem Functional Analyses JOURNAL=Frontiers in Plant Science VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2021.690235 DOI=10.3389/fpls.2021.690235 ISSN=1664-462X