查询词典 forest tree
- 与 forest tree 相关的网络例句 [注:此内容来源于网络,仅供参考]
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This article will carry on the stage division from the forest resources increase and decrease situation angle to the state-operated silver forest field construction field for 50 years development course, will provide the reference take the time as the tree farm next development
本文将从森林资源消长情况的角度对国营银盏林场建场50年来的发展历程进行阶段划分,以期为林场今后的发展提供参考。
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Mountain hills thin layer should be forest-based development of economic forest such as the tung tree, oil tea, mulberry trees, orchards, also has good conditions.
山区丘陵土层薄,应以林业为主,发展经济林如油桐、油茶、桑、果园等也有好的条件。
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A total of 26 tree species (DBH≥3.0cm) were recorded within 5 plots in the forest, which belong to 15 families and 21 genus. Fagaceae and Hamamelidaceae were dominant families. The vertical structure of the forest was simple, without obvious shrub and herb layers.
结果表明,5块样地内共出现树种26种,分属于15科21属,以壳斗科和金缕梅科为主;群落垂直结构简单,灌木层和草本层不甚明显。
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This paper discussed the distribution of forest resources in the tropics, their main types, main characteristics and present management status, and proposed twelve management modes, and these modes include establishing nature conservation region, eco-public-benefit forest management, extravisme, limiting logging and regeneration after logging, logging three and remaining seven method, tropical shelterwood system, sylviculture douce, whole cultivation method, specialized cultivation method, strip clearcutting method, developing tree species of lacking noted and nature regeneration, closing hillsides to facilitate afforestation.
本文对世界热带地区的森林资源分布、基本类型、主要特征、世界次生林的经营现状和主要经营方式讨论。这些经营方式包括建立自然保护区、生态公益林经营、&采掘主义&、限制采伐和伐后更新、&砍三留七&法、&扶持&式育林法、&抑制&式育林法、整体培育法、专门培育法、带状皆伐法、开发欠知名树种、自然更新和封山育林。
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Forest area throughout the area account for about 52% of Taipei's Tai Ping Shan, Pa-hsien-shan of Taichung, Chiayi and Alishan is the well-known of the three major forest areas, timber reserves of up to 326,000,000 cubic meters, in recent type of trees 4000 kinds, particularly in the areas of Taiwan fir, cypress, camphor, Nan valuable timber, such as world-famous, camphor tree extract more tops the world camphor and camphor oil production accounts for about 70 percent of the world's total.
台湾森林面积约占全境面积的52%,台北的太平山、台中的八仙山和嘉义的阿里山是著名的三大林区,木材储量多达3.26亿立方米,树木种类近4000种,其中尤以台湾杉、红桧、樟、楠等名贵木材闻名于世,樟树提取物更居世界之冠,樟脑和樟油产量约占世界总量的70%。
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Forest structure,individual quality,tree density and crown density,and structure and function of brush forest are used to construct a criterion to the LQBF.
判定低质低效林的依据是林分的结构、林木个体质量、密度和郁闭度、灌木林结构和功能。
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We classified the forest fuel and studied the fuel spatial distribution based on forest inventory and sample plots. Vertical and horizontal distribution of fuel is calculated from sample plots and tree biomass equation. Based on fuel distribution, wind simulation and DEM, fire intensity and effective shaded fuelbreak width are calculated under the condition of crown fire occurrence.
根据历史气象数据确定当地平均最大风速平均值为3.6m/s,平均最大风速的最大值为14m/s,在此情景下,结合DEM数据和可燃物数据对研究区域的林火强度进行计算,并对防火林带的有效参数进行确定。
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Luozha River is a first branch of Lancang River in its middle section. A less known deciduous monsoon forest was recently discovered on the dry-hot banks of Luozha River. The deciduous monsoon forest is 15-20 m tall with Lannea coromandelica Colona floribunda. Mallotus philippensis as the dominant tree species, and Microstegium ciliatum Eupatorium odoratum、Ageratum conyzoides are the dominant species in the shrub-herb layer.
对罗扎河下游鲜为人知的落叶季雨林进行了群落生态学研究,结果表明:罗扎河下游落叶季雨林群落高度在15~20m之间;群落乔木层以厚皮树、一担柴、粗糠柴、毛果扁担杆、灰毛浆果楝等树种为优势种;灌草层以刚莠竹盖度最大,其余如飞机草、藿香蓟、蹄盖蕨Athyrium sp。
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A broad expanse of the river was turned to blood;1 in the middle distance the red hue brightened into gold, through which a solitary log came floating black and conspicuous;2 in one place a long, slanting mark lay sparkling upon the water; in another the surface was broken by boiling, tumbling rings, that were as many-tinted as an opal; where the ruddy flush was faintest, was a smooth spot that was covered with graceful circles and radiating lines, ever so delicately traced; the shore on our left was densely wooded, and the somber shadow that fell from this forest was broken in one place by a long, ruffled trail that shone like silver; and high above the forest wall a clean-stemmed dead tree waved a single leafy bough that glowed like a flame in the unobstructed splendor that was flowing from the sun.
不远处红光闪成金黄;孤零零的一根原木在河中漂浮而来,呈一线醒目的黑色;河的一处,一条长长的斜影横落在水面上,闪闪烁烁;另一处,水面被翻滚的水波打碎,仿佛蛋白石放射的斑斓色彩;红彩最淡处是一片平静的水面,覆盖着优雅的环形和放射状的波纹,细腻如绘;河左岸是一片浓密的森林,一条长长的崎岖小径划破树林的一片荫翳,闪闪如银;一株光秃秃的枯树高耸于密林之上,仅剩的一杆青枝随风摇曳,像火焰闪耀在阳光洒下的一览无遗的壮美之中。
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A broad expanse of the river was turned to blood; in the middle distance the red hue brightened into gold;,through which a solitary log came floating ,black and conspicuous; in one place ,a long slanting mark lay sparkling upon the water; in another the surface was broken by boiling ,tumbling rings, that were as many-tinted as an opal; where the ruddy flush was faintest ,was a smooth spot that was covered with graceful circles and radiating lines, ever so delicatedly traced; the shore on our left was densely wooded ,and the somber shadow that fell from this forest was broken in one place by a long, ruffled trail that shone like silver; and high above the forest wall a clean-stemmed dead tree waved a single leafy bough that glowed like a flame in the unobstructed splendor that was flowing from the sun. there were graceful curves ,reflected images ,woody heights ,soft distances ; and over the whole scene ,far and near ,the dissolving lights drifted steadily ,enriching it every passing moment with new marvels of coloring.
还记得自己刚开始船上生涯时所见过的那次辉煌的落日:宽阔的河面一片血红;不远处这红色明亮起来,变成金色,一根显眼的黑色圆森木从中漂过;这边,一根长长的浮标倾斜在水面上,熠熠闪光;那边,翻滚的波浪打破了宁静的水面,像猫眼石般色彩纷呈;微红的水流最缓和处,美丽的涟漪在平稳的水面上层层荡漾开去;左侧的河岸上丛林茂密;一条如银带般闪亮的小径从昏暗的树荫中蜿蜒而出,伸向远处;高高的密林之上有一根无枝无蔓的枯树,仅留有一根带叶的树枝在风中晃动,在太阳一泻千里的光辉里,它宛如燃烧的一团火;还有优美的波纹、水中的倒影、树木葱茏的高地、柔和的远景;放眼望去,由远及近,逐渐裉去的光线随波荡漾,每时每记得都以其新的奇妙着色为这条河添姿增彩。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。