西北林学院学报2017，Vol.32Issue(2)：180-187,8.DOI:10.3969/j.issn.1001-7461.2017.02.31
黄帝陵古侧柏树干心腐研究
A Study on Trunk Decay of Ancient Platycladus orientalis in Tomb of Yellow Emperor
摘要
Abstract
Tree radar unit was applied to detect the trunk decay conditions of 81 ancient Platycladus orientalis trees on the back hill of mausoleum and 19 around the Xuanyuan Temple.Three different kinds of rotten sections were found:hollow,rotten,and loose.Taking the ratio of rotten area to cross-section area as the indicator,the rotten levels in the trunk were estimate.The relationships between rotten level and other parameters were investigated,including diameter at breast height (DBH),height of trunk,crown width,crown area,ratio of crow inclination (RCI),and ratio of crown to height.Significant correlations were found between the percentages of healthy,loose,rotten,and hollow parts and DBH,the values of R2 were 0.853 0,0.668 8,0.629 1,and 0.814 7,respectively,among them,the correlation between the percentage of healthy part and DBH was negative,and positive between other parts and DBH.In addition,initial rot occurred in the basic level of the trunk,and then gradually spreading upward.Crown width,crown area,ratio of crow inclination (RCI) and ratio of crown height had significant correlation with the rotten level withR2 values of 0.744 8,0.736,0.826 8,and 0.608 5,respectively.The rotten level was negatively correlated with crown width,crown area and ratio of crown height,but positively correlated with ratio of crow inclination.The results indicated that TRU could detect trunk rotten situations effectively,with high accuracy,which could be used as a reliable method of trunk nondestructive testing.关键词
树木雷达/黄帝陵/侧柏/树干心腐Key words
tree radar unit/Tomb of Yellow Emperor/Platycladus orientalis/trunk decay分类
农业科技引用本文复制引用
刘星旦,康永祥,甘明旭,李小军,刘伟..黄帝陵古侧柏树干心腐研究[J].西北林学院学报,2017,32(2):180-187,8.基金项目
国家林业公益性行业科研专项项目“黄河中游Ⅰ级古树名木保护关键技术研究”(201404302) （201404302）
西北农林科技大学校重点科研专项(Z109021310). （Z109021310）
