1) basal area
胸高断面积
1.
Evergreen broadleaved forest in Tianmu Mountain National Nature Reserve of Zhejiang Province as an example, a digital elevation model (DEM) was used to analyze the difference of community biodiversity and basal area under different terrain.
以浙江天目山国家级自然保护区的常绿阔叶林为例,基于DEM在群落尺度上分析不同地形条件下群落物种多样性和胸高断面积的差异。
2.
Four theoretical growth functions, the Mitscherlich, Logistic, Gompertz and Korf functions were applied to the basal area growth data of individual Western yellow pine ( Pinus ponderosa ) trees to model the basal area growth.
用 Mitscherlich、Logistic、Gompertz和 Korf4个理论生长方程分别对引种到捷克 Kostelec地区的西黄松林木个体胸高断面积生长过程进行了拟合 ,由最佳生长方程分别得出了胸高断面连年生长量、平均生长量和相对生长率随时间变化的函数 ,并对生长过程进行了分析。
3.
The result showed,prominent difference of SOC content of different vegetation types basing on arbor basal area was existed(p<0.
采用TW INSPAN进行植被类型分类,对广东长潭自然保护区不同植被类型土壤有机碳分布特征进行了研究,结果表明,基于乔木胸高断面积作为分类标准的不同植被类型土壤有机碳差异极显著(p<0。
2) section area of breast height
胸高断面积
1.
The one-hundred-time forest stand average breast diameter as the diameter to make circle-shaped sample results that section area of breast height per hectare equals to that the number of the forest timbers inside the circle plus an half of the number of the timbers on the circle boundary.
以林分平均胸高直径的100倍为直径作圆形样地,得出林分每公顷胸高断面积等于圆形样地圆内的林木株数加上圆界上林木株数的一半。
3) stand basal area
林分胸高断面积
4) relative basal area
相对胸高断面积
5) total basal-area of breast-height
胸高总断面积表(林)
6) growth model of section area of breast height
胸高断面积生长模型
1.
The data used to develop the growth model of section area of breast height of individual tree for secondary forests were collected from 20 Tilia amurensis trees permanent sample plots which were set in the secondary forest region of Mao\'ershan Mountain area in Heilongjiang province,Northeast China.
应用帽儿山天然次生林区不同林分条件下选设的20块椴树(Tilia amurensis)固定样地的解析木调查资料,分析多个单木竞争指标与对象木胸高断面积定期生长量的相关关系,在椴树单木胸高断面积生长模型中引入林木自身大小、单木竞争指标和立地因子,应用回归分析法建立帽儿山地区天然次生椴树单木胸高断面积生长模型。
补充资料：异形断面钢材(见异形断面型材)
异形断面钢材(见异形断面型材)
special section steel
，一、u以uu、’“飞豆on gQngC01异形断面钢材(speeial Seetion steel)见异形断面型材。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条