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dc.contributor.authorLi, Doudoues_ES
dc.contributor.authorFernández Luque, José Enriquees_ES
dc.contributor.authorLi, Xines_ES
dc.contributor.authorXi, Benyees_ES
dc.contributor.authorJia, Liminges_ES
dc.contributor.authorHernández Santana, V.es_ES
dc.identifier.citationAgricultural Water Management 241: 106348 (2020)es_ES
dc.description10 páginas.- 7 figuras.- 2 tablas.- referenciases_ES
dc.description.abstractHigh resolution measurements of trunk diameter fluctuations (TDF) provide a means to study short-term and long-term stem radial variations and response to water stress of fruit trees. There is a lack of information, however, on the performance of TDF measurements on fast-growing poplar trees. To both clarify the intra-annual and inter-annual growth patterns and to diagnose water status of young poplar trees, we monitored TDF, leaf area index, soil matric potential, midday stem water potential (Ψstem) and main meteorological variables in a plantation with 3- and 4-year-old Populus tomentosa trees over two growing seasons (2016 and 2017). We had two irrigation treatments, well-watered (WW) and water-stressed (WS). For the first time for this species, we identified accurately and quantitatively the seasonal growth pattern and associated parameters (growth initiation and cessation time, growing season duration, maximum growth rate, etc.) of young P. tomentosa with four clear stages, based on the growth rate for both treatments. We identified that stage II (mid-April to mid-June), when trees showed the most active growth rate and less rainfall was recorded, is the most crucial stage for irrigation management, especially as trees grow larger and have a greater water demand. In the two experimental years, irrigation did not affect the timing of growth initiation and cessation. However, maximum growth rate was significantly higher and occurred earlier in the WW trees than in the WS trees. From the tested trunk diameter fluctuation indicators, trunk growth rate (TGR) showed a greater potential for assessing tree water stress than both maximum daily shrinkage (MDS) and daily growth (DG), being even more sensitive to the onset of water stress than midday Ψstem. We conclude that high resolution trunk dendrometers are useful to track growth and determine water stress, which make them a good candidate to schedule irrigation in fast-growing poplar plantations. © 2020 Elsevier B.V.es_ES
dc.description.sponsorshipThis research was jointly supported by “Graduate Training and Development Program of Beijing sss Municipal Commission of Education” (BLCXY201803), the “National Natural Science Foundation of China” (31872702, 31670625), the National Key Research and Development Program of China (2016YFD0600403), the KeyTechnologies R&D Program of China (2015BAD09B02) and “Graduate Student Short-term International Studying of Forestry College in Beijing Forestry University” (2019XKJS0501). D. Li, et al.Agricultural Water Management 241 (2020) 1063488es_ES
dc.subjectIrrigation schedulinges_ES
dc.subjectMaximum daily shrinkagees_ES
dc.subjectTrunk growth ratees_ES
dc.subjectWater stresses_ES
dc.titleTree growth patterns and diagnosis of water status based on trunk diameter fluctuations in fast-growing Populus tomentosa plantationses_ES
dc.description.peerreviewedPeer reviewedes_ES
dc.contributor.funderNational Natural Science Foundation of Chinaes_ES
dc.contributor.funderNational Key Research and Development Program (China)es_ES
oprm.item.hasRevisionno ko 0 false*
dc.contributor.orcidFernández Luque, José Enrique [0000-0002-9024-6383]es_ES
dc.contributor.orcidHernández Santana, V. [0000-0001-9018-8622]es_ES
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