Number weighted (Mean <sub>#</sub>) and magnitude-weighted mean (Mean <sub>w</sub>) properties for SOM extracts from a simulated soil warming experiment. MannBenjamin F. ChenHongmei HerndonElizabeth M. ChuRosalie K. TolicNikola F. PortierEvan Roy ChowdhuryTaniya RobinsonErrol W. CallisterStephen J. D. WullschlegerStan GrahamDavid E. LiangLiyuan GuBaohua 2015 <p>The CHO index was calculated as (2×[<i>O</i>]–[<i>H</i>])/[<i>C</i>].</p>