Annual Radial Growth and Its Response to Climatic Factors of Three Species of Diffuse-porous Wood Species in Luoyang
XU Junliang
ZHAI Lexin
HOU Jiayu
WEI Miao
ZHANG Yiping
Abstract：In order to understand the annual radial xylem growth dynamics of trees in Luoyang and its response to climate,the study focused on the common diffuse-porous wood species of Ligustrum lucidum,Populus canadensis,and Platanus occidentalis in the region.The cambium and xylem was continuously monitored by microcore sampling technology.We also discussed and analyzed the annual radial growth of these three tree species and its correlation with climatic factors in conjunction with meteorological data.(1)The three tree species showed different trends in cambial activity.P.occidentalis showed a unimodal distribution,reaching the peak of cell number at the end of May.The activity pattern of L.lucidum and P.canadensis was not obvious.The start and stop time of cambial activities of the three species was from mid-March to mid-late October.(2)P.occidentalis showed higher radial growth increment than L.lucidum and P.canadensis,of which 10568±912.0 um,2831±591.2 um,and 2770±425.2 um,respectively.Moreover,the maximum growth rate of P.occidentalis is also the highest,was 100.6um/d occurred in early June,about 30 to 40 days later than that of L.lucidum and P.canadensis.(3)Temperature was the main climatic factor affecting annual radial radial growth of L.lucidum and P.occidentalis,which P.occidentalis also having positive correlations with precipitation and relative humidity,while L.lucidum was not significantly correlated with soil water conditions.The correlation of P.canadensis with climatic factors was not significant.
Keywords：Ligustrum lucidumPopulus canadensisPlatanus occidentalismicrocore technologyannual radial growth
Publication Date：2024-10-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：10( 1-9,18 )