树种

In order to analyze the airborne LiDAR data corresponding to single trees and stand heights in the forestry area, we set up samples to measure tree heights of Alnus formosana, Cryptomeria japonica, and Chamaecyparis formosensis in the Alishan area. We build the Canopy Height Model based on the data from the airborne laser scanning system. Single Tree heights were estimated by averaging the CHM values within a 0.5m radius, and six different sizes of sample stands (5×5, 10×10, 12.5×12.5, 15×15, 17.5×17.5, and 20×20) were set up to extract the average heights within the area as the calculated value.

本研究於阿里山地区设置样区，针对台湾赤杨、柳杉、红桧等树种进行立木树高之量测，配合该样区之空载光达影像资料，建立树冠高度模型(Canopy height model， CHM)，探讨空载LiDAR在森林地区对於单木树高与林分高的量测情形；单株立木高系以样区立木位置为中心，萃取0.5 m 圆形环框范围内之CHM平均值为其推估值；光达林分高则以6种林分面积(5 m×5 m、10 m×10 m、12.5 m×12.5 m、15 m×15 m、17.5 m×17.5 m、20 m×20 m)萃取范围内之CHM平均值为其推估值。

After esterification by BTCA Acoustic properties of picea sitchensis Carr.andChamaecyparis Iawsoniana ParI were changed,(treated/untreated ratio):Loss tangentdecreased 10～2424% in the tangential ofpicea sitchensis Carr,9～17% and 10～22% in thetangential and radial directions of Chamaecyparis Iawsoniana ParI.,respectively.Specificdynamic Young's modulesand acoustic radiation coefficient of two wood changedunremarkably,in the tangential direction with increment of ASE.Specific dynamic Young'smodulesincreased 3～9% in the radial direction.tgδ/E of decreased 9～27% intangential of picea sitchensis Carr,7～14% and 10～26% in the tangential and radial directions ofChamaecyparis Iawsoniana ParI.,respectively.

BTCA酯化处理西特克云杉和美国扁柏木材的声学性能发生了变化，处理材与未处理材比值，损耗角正切tgδ：西特克云杉纵向下降10～24％，美国扁柏下降纵向9～17％，径向10～22％；比动态弹性模量E/ρ：两种树种的纵向变化均不明显，随着ASE上升变化不规则，美国扁柏径向上升3～9％；声辐射阻尼的变化类似于比动态弹性模量E/ρ的变化；tgδ/E：西特克云杉纵向下降9～27％，美国扁柏下降纵向7～14％，径向10～26％。

Vatica guangxiensis and Altingia andersonii are dominant tree species of the upper layer in the community, which can be divided into A, B, C, D, E layers. and is mainly charactered by evergreen megaphaenerophytes and mesophaenerophytes with simple, chartaceous, entire, caudal mesophyll leaves. There are a lot of wooden lianas and epiphytes between layers.

该群落是以龙脑香科的广西青梅和金缕梅科的细青皮为乔木上层优势树种，群落分A至E层，外貌以单叶、纸质、全缘、尾尖、中叶为主的常绿大、中高位芽植物组成为特征，层间木质藤本和附生植物丰富，属热带季节雨林。

In the middle and lower reaches of the Yangtze River region in recent decades,chlorotic Cinnamomum camphora has become more and more serious with urban landscape and greening benefits degraded due to physiological disease of this tree species.

樟树Cinnamomum camphora作为城市绿化的优良树种广泛应用于中国南方各省，但最近几十年来，长江中下游地区樟树黄化现象越来越严重，极大地影响了城市景观和城市绿化的生态效益。

The results showed that at the same concentrations, the total amount of test PAHs adsorbed by the K. candel and A. marina leaf litters had no significant difference, in spite of their decomposition status. The adsorbed amount of the PAHs tended to increase with their increasing concentrations. The litters had a higher adsorption rate of or exhibited selective adsorption to phenathrene and chrysene when the PAHs concentrations were lower, and had a higher adsorption rate of benzo perylene when the PAHs concentrations were higher.

结果显示：在同等PAHs浓度下，秋茄和白骨壤落叶碎屑对4种PAHs的吸附总量相近，树种间或分解状态间的吸附差异不显著；随着PAHs浓度的增加，2种红树植物落叶碎屑对4种PAHs的吸附率均呈现逐渐增加的趋势；PAHs浓度较低时，落叶碎屑对和菲有较高的吸附率或选择性吸附，PAHs浓度较高时，落叶碎屑对苯并芘吸附率提高。

There are too many Cinnamomum camphor-aPresl, and the sight of streets is too boring.

但总体来说，行道树树种不丰富，香樟过多，道路景观单调。

It is not only nature of hard wood flooring , concinnous styles , soft comfortable feet feeling than attracts you , but also than surface layer from precious trees , multi-layer hard wood engineered scoring instead of solidified engineering floor of taking medium density fiberboard as base materials even attracts you much more .

吸引你的不仅仅是拥有实木地板的自然、优雅风格、柔软舒适的脚感，另外他采用珍贵树种为表层，多层实木复合胶合而成，不同于强化复合地板以中密度板为基材的特点。

Corylus heterophylla vegetative propagation was relatively difficult, layering method was mainly used at present, but low coefficient of propagation limited mass production of its seedlings.

榛子是一种无性繁殖相对困难的树种，目前主要采用压条法进行繁殖，繁殖系数低，这限制了榛子苗的大量生产。

Vertical zonation of plants, 700m here are pine, poplar, willow, pulling, etc. 8 kinds and a variety of economic trees. 1700m ~ 1000m between the growth of pine, birch, cypress, Lespedeza, etc., 1000m above with a small amount of Betula, Populus, weed, and six wood, Corylus, moss and so the distribution of irrigated grass, 1500m above the larch.

植物呈垂直分带，700m以下有油松、杨树、柳树、揪等8种及各种经济树种。1700m~1000m之间生长松、桦、柏、胡枝子等，1000m以上有少量桦、山杨、杂木林及六道木、毛榛、苔藓等灌草丛分布，1500m以上为落叶松。

The Acer truncatum and the Cotinus coggygriaare simmilar to the Platycaldus orientalis in the mechanism ofdrought tolerance,having relatively strong ability of〓taking in,saving and holding water.

最后根据供试树木的耐旱特点，结合太行山区的立地特点及治理方针，提出了不同造林目的和特定立地条件下选择耐旱树种的原则意见。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。