文献类型：期刊文献

英文题名：Relationship between Ring Width and Tracheid Characteristics In Picea crassifolia: Implication in Dendroclimatology

作者：Xu, Jinmei[1] Lu, Jianxiong[1] Evans, Robert[2] Downes, Geoffrey M.[3,4]

第一作者：徐金梅

通信作者：Lu, JX[1]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]CSIRO Mat Sci & Engn, Clayton, Vic 3169, Australia;[3]CSIRO Ecosyst Sci, Hobart, Tas 7001, Australia;[4]CRC Forestry, Hobart, Tas 7001, Australia

年份：2014

卷号：9

期号：2

起止页码：2203-2213

外文期刊名：BIORESOURCES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000336960700030)】；

基金：This work was funded by the National Natural Science Foundation of China (No. 31300478 and No. 30825034). The Academy of Water Resource Conservation Forest of Qilian Mountains in GanSu provided appreciable support for the field work. The authors wish to thank Winston Liew of CSIRO and Xiaomei Jiang of CAF for their technical assistance with sample preparation and measurement.

语种：英文

外文关键词：Tracheid number; Tracheid diameter; Tracheid wall thickness; Ring width; Pointer year; Wood science; Dendroclimatology

摘要：Ring width represents the total width of cells in a growing season. Relatively few studies have identified which of the parameters, cell number, size, or wall thickness is the greater contributor to variations in ring width. It is difficult to clearly explain the relationship between the climate in which a tree is located and the ring growth. In this study, the ring width and various tracheid characteristics (radial lumen diameter, double wall thickness, and number) in 298 rings of Picea crassifolia wood were investigated. Tree rings were quantitatively categorized based on their width into large, medium, and narrow classes. The tracheid number and lumen diameter were strongly correlated with annual ring width. The tracheid number had the strongest effect on the ring width. The effect of the tracheid number was three times larger than that of the lumen diameter. More earlywood cells were formed in larger rings, while larger earlywood cells were produced in years when narrow rings were formed. Wall thickness had no appreciable effect on ring width. The results of this study help to understand the relationship between the climate and the ring growth from the tree physiology perspective, when ring width is used as a climate proxy.