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- After planting, tree height (H), diameter at ground level (D) and diameter at breast height (DBH) were measured at regular intervals. 造林后，定期观测树高、地径或胸径。
- Mean height, diameter at breast height (DBH) and stand biomass were 44.8%, 32.7%and 139.76% higher in the mixed stand than in the poplar pure stand respectively. 26a生沙棘-杨树混交林中的杨树平均株高比纯林的高44.;8%25，平均胸径粗增加32
- Compared with the original region of L.leptolepis,Nagano-ken in Japan,the growth of tree and diameter at breast height had not difference. 与日本落叶松原产地日本长野县相比,林木的树高和胸径生长几乎没有差异。
- Three tree factors of diameter at breast height,tree height and tree volume of Japanese larch had been studied by using 5 empirical formulas and grey GM(1,1)model in this paper. 对日本落叶松三测树因子采用了5个经验方程和灰色GM(1,1)模型进行研究,经验方程中选中了柯列尔式,柯列尔式的各测树因子的残差平方和均小于GM(1,1)的残差平方和。
- Using man-investigation data of 300 107 new varieties populus to study the relationship between crown size and tree diameter at breast height of 107 new variety populus. 摘要利用300株107杨树新品种人工林调查资料，研究了107杨树阳性冠幅与胸径之间的相关关系。
- Result showed that different waterlogging depths have obvious effects on tree height, diameter at breast height, under branch height, trunk morphological structure, stem base form, and growth process. 结果表明：不同水分条件对池杉的树高、胸径、枝下高、干形、树干基部形态及生长过程均产生明显的影响。
- According to the changes of DBH (diameter at breast height) and plant height along with the ages in each section, the growth status and rules were studied using statistical analysis and growth curves. 针对各标段主要树种的胸径和树高随着年龄的变化，并利用统计分析其生长变化曲线，探索了其生长状况和生长规律。
- The diameter at breast height(DBH) of each tree was recorded.We determined the life table, age structure and survivorship curve of the Abies fargesii to analyze population structure and dynamics. 巴山冷杉幼苗储备丰富，巴山冷杉自身的生物学特性及环境因素是形成这种现象的主要原因；
- Population age structure and recruitment information were obtained using an age-DBH (diameter at breast height) regression from the sampled cores and the DBH measured on all trees in the plots. 某一地区的太阳辐射能量高常会导致高温少雨，故高强度的太阳辐射使表土的湿度降低而不利于树木的径向生长。
- outside bark diameter at breast height 带皮胸径
- inside bark diameter at breast height 去皮胸径
- " According to scientists study, where the diameter at breast height of more than 2 meters Cooper, age about 2,000 years, should be a by-sik, the Qin Dynasty. 据科学工作者考察，凡胸径两米以上的古柏，树龄约2000多年，应是秦代所植。
- Diameter at Breast Height 胸围
- diameter at breast height (DBH) 胸径
- Effects of crown attributes on sapwood and heartwood area at breast height were highly significant. 对胸高处湿心材、边材影响极显著。
- Tree diameter at breast height 胸径
- V.Salvador into ZhejiangProvince was started in 1972.Four-year-old trees could be as tall as 8.36 m witha diameter of 10.36 cm at breast height. 种植的4年生树高达8.;36米、胸径10
- The main factors which decided the characteristics of Larix Chinensis forests were analyzed, the order is DBH?tree height?age?Area at breast height?species abundance. 通过主成分分析,对太白红杉林特征起决定作用的因子依次是:胸径?树高?年龄?胸高断面积?物种丰富度;
- This lakelet was, perhaps, a hundred yards in diameter at its widest part. 这个小湖最宽的地方大概有一百码宽。
- It is 36 feet in diameter at the base. 它的根部直径可达36英尺。
