biostudies-literatureZhao XWNational Natural Science Foundation of ChinaNational Key Research and Development Programmee5164https://www.ebi.ac.uk/biostudies/studies/S-EPMC6037140biostudies-literatureUnknown6<h4>Background</h4>Plant-water relations have been of significant concern in forestry and ecology studies in recent years, yet studies investigating the annual differences in the characteristics of inter-class water consumption in trees are scarce.<h4>Methods</h4>We classified 15 trees from a <i>Schima superba</i> plantation in subtropical South China into four ranks using diameter at breast height (DBH). The inter-class and whole-tree water use were compared based on three parameters: sap flux density, whole-tree transpiration and canopy transpiration over two years. Inter-class hydraulic parameters, such as leaf water potential, stomatal conductance, hydraulic conductance, and canopy conductance were also compared.<h4>Results</h4>(1) Mean water consumption of the plantation was 287.6 mm PeerJEffects of size and microclimate on whole-tree water use and hydraulic regulation in <i>Schima superba</i> trees.PMC603714031670410416307522016YFC0500106-02Zhao XWZhang CFZhao POuyang LfalseEffects of size and microclimate on whole-tree water use and hydraulic regulation in <i>Schima superba</i> trees.<h4>Background</h4>Plant-water relations have been of significant concern in forestry and ecology studies in recent years, yet studies investigating the annual differences in the characteristics of inter-class water consumption in trees are scarce.<h4>Methods</h4>We classified 15 trees from a <i>Schima superba</i> plantation in subtropical South China into four ranks using diameter at breast height (DBH). The inter-class and whole-tree water use were compared based on three parameters: sap flux density, whole-tree transpiration and canopy transpiration over two years. Inter-class hydraulic parameters, such as leaf water potential, stomatal conductance, hydraulic conductance, and canopy conductance were also compared.<h4>Results</h4>(1) Mean water consumption of the plantation was 287.6 mm 2018-01-01T00:00:00Z20182025-04-21T19:20:21.577Z2019-03-26T23:46:25ZS-EPMC60371403000298310.7717/peerj.5164