Responses of Sap Flux Densities of Different Plant Functional Types to Environmental Variables Are Similar in Both Dry and Wet Seasons in a Subtropical Mixed Forest

Subtropical mixed forest ecosystems are experiencing dramatic changes in precipitation and different plant functional types growing here expected to respond differently. This study aims unravel the water use patterns of their responses environmental a typical subtropical southern China. Diurnal seasonal sap flux densities evergreen broad-leaved trees (EBL), deciduous (DBL), conifers (CON), as well variables, were recorded simultaneously from May 2016 March 2019. The results showed that density EBL was significantly higher than those CON DBL all seasons, irrespective dry or wet seasons. Path analysis revealed differences mainly due variations photosynthetic photon (PPFD). At saturating PPFD, during day response vapor pressure deficit (VPD). Regression analyses increased logarithmically with type. hysteresis loops VPD among Our demonstrated converging variables three considered this study. findings contribute better understanding strategies forests.