Heartwood variations in mid-aged plantations of Erythrophleum fordii

作     者：Zhigang Zhao Wei Shen Chunsheng Wang Hongyan Jia Jie Zeng Zhigang Zhao;Wei Shen;Chunsheng Wang;Hongyan Jia;Jie Zeng

作者机构：Research Institute of Tropical ForestryChinese Academy of ForestryLongdongGuangzhou 510520People’s Republic of China Zhaoqing UniversityZhaoqing City 526061People’s Republic of China Experimental Centre of Tropical ForestryChinese Academy of ForestryPingxiang City 532600People’s Republic of China 

出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)

年 卷 期：2021年第32卷第6期

页      面：2375-2383页

核心收录：

学科分类：082902[工学-木材科学与技术] 08[工学] 0829[工学-林业工程] 

基　　金：This study is supported by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF(Grant No.CAFYBB2017MB019) 

主　　题：Erythrophleum fordii Heartwood formation Spatial variation Tree differentiation 

摘      要：Erythrophleum fordii Oliv.(Caesalpiniaceae)is a rosewood species naturally distributed in southeast Asia and south China,and the heartwood is commonly used for high-quality crafts and *** there are differences in heartwood development among single trees with distinct social status,the relationship between heartwood development and growth performance remains *** information is essential to improve plantation management for high-yield heartwood *** dominant,intermediate and suppressed trees were sampled from *** plantations aged in 32-35 years in Pingxiang City,Guangxi,*** analysis was carried out to determine horizontal and vertical variations of heartwood and *** of annual rings,diameter and area of heartwood and sapwood as well as ratios of heartwood diameter and area at breast height were all significantly influenced by the social status of trees in stands(P0.05).In these mid-aged plantations,*** stems developed heartwood once the xylem diameter reached 5-10 cm,and then heartwood diameter and area increased with increasing xylem *** ring numbers,diameter and area as well as their ratios decreased with increasing height,while sapwood ring numbers and diameter were relatively constant within the section where heartwood *** and sapwood diameters were equal at heights of approximately 6-m for dominant,5-m for intermediate and 3-m for suppressed *** trees differed considerably from intermediate and suppressed trees in heartwood volume,while heartwood volume ratios were all below 30%,and near 90%in the stem section below 8-m height regardless of social *** analysis showed that DBH was the most important factor influencing heartwood in even-aged *** findings provide evidence for crop tree selection,thinning regimes and reasonable management of plantations of ***.