Differences in Transpiration Characteristics among Eucalyptus Plantations of Three Species on the Leizhou Peninsula, Southern China

How much transpiration water consumption varies between eucalyptus species is unknown, making the suitability of a particular for large-scale planting in given area, or whether interspecific differences need to be taken into account estimates, uncertain. Here, Eucalyptus camaldulensis Dehnh. (Ec), pellita F. v. Muell. (Ep), most resistant species, and urophylla S.T. Blake × grandis Hill ex Maiden (Eug), widely planted were monitored sap flow. Their stand was also estimated its relationship various influencing factors analyzed same age site, predictive models daily (T) developed. The results showed that T all jointly influenced by meteorological factors, soil content (SWC), leaf area index (LAI), with great variation response each factor among species. Accordingly, we developed species-specific prediction could adequately explain changed (R2-values: 0.863–0.911). There significant mean flow density (JC) three Although Ec had significantly lower JC than Ep, it higher Eug on timescales, where annual Ep (0.11 cm min−1) 1.4 2.6 times (0.08 (0.042 min−1), respectively. Transpiration less but greater (743.41 mm) 2.4 1.5 (311.52 (493.58 mm), These suggest cannot ignored when estimating rates Chinese plantations, whose amount use should considered choosing optimal plant regionally.