查询词典 larch

By the analysis of the dead leaves and branches and the holding water contents of five type standing forests—birch and larch mixed forest, larch planted forest, Chinese pine planted forest, birch natural forest and shrub forest in Wutai Mountain area, central Asia alpine region, the water conservation benefit among them was compared.

为了探讨不同林分水源涵养功能，为地域林业发展树种规划提供技术依据，该研究以中亚高山区五台山林区内五种不同类型林分为试材，调查分析了不同林分的枯落物及其持水量，比较了不同林分类型的涵养水源效益。

And Changbai larch(Larix olgensis A.Henry)atdoubled CO2 concentration at seedling stage in growth-chamber and WI,HI of several dorminanttree species in MBKPF(1)Under 700μl·1-1 concentration of CO2,the stem height, stem diameter,main root length,root/shoot ratio and the relative proportions of biomass in root,stem and leaf of the seedlings ofKorean pine and Changbai larch had no significant change.

在700μL·L-1CO2条件下与正常浓度下相比较，在一个生长季后，红松、落叶松幼苗的苗高、地径、主根长、根茎比及生物量在根、茎、叶各器官中比例，差异不显著，对落叶松的侧枝数有影响；在第一、二次试验中，落叶松幼苗的平均每株生物量比在正常CO2浓度下大12.2％、14.2％，而红松幼苗的生物量分别减少3.9％、12.8％；红松、落叶松针叶叶绿素含量以及叶绿素a的相对含量在高浓度CO2下受到影响。

This paper comparatively studies evapo-transporation of 6 representative forest types,such as young growth larch,half-mature larch ,young growth Korean pine,half-mature Korean pine,oak,weed tree,in mountain- ous area of eastern Liaoning by observing fixed plots.

本试验运用固定标准地观测的方法测定辽东山区几种主要林分类型的蒸发散量，根据布兰尼—尼里德尔模型推算的后楼水库集水区邻域范围内的年土壤和枯落物水分蒸发量分别为落叶松幼龄林720 mm/a、落叶松中龄林751 mm/a，红松幼龄林762 mm/a、红松中龄林826 mm/a、柞树林677 mm/a、杂木林741 mm/a。

The water conservation benefit of soil for different forests was 277.28%-173.67% higher than that of grass slope, among them, the highest one was birch and larch mixed forest, the followings were larch planted forest, Chinese pine planted forest, birch natural forest, and the lowest one was natural shrub forest.

林地土壤的涵养水源效益比荒草坡高277.28%~173.67%，其中白桦落叶松混交林最高，落叶松人工林、油松人工林、白桦天然林次之，灌木林最低。

Larch Forest occurs on the west-faced slope behind of Yangyuchang between3400-3600 m in the Lashihai region, which consist of the Larch-Rhododendron Communities with R.

大果红杉林在拉市海流域内见于洋芋场村寨后海拔3400-3600米范围内的西向坡面，面积较少。

Based on the data of Larch in eastern region of Daxinganling,the single entry volume table of Larch is established by using artificial neural networks and regression analysis.

采用大兴安岭东部落叶松Larch的材料，分别运用人工神经网络和回归分析方法编制了落叶松的一元材积表，人工神经网络在拟合过程中以落叶松胸径作为输入向量，以单株材积作为输出向量，并选出既符合林木材积曲线分布规律，又具有较高拟合准确度的网络模型，其网络结构为1∶2∶1，网络对象名为Enet。

The stem flow of spruce and larch had acidulation on the soil, but the soil around the bole of spruce didn't present intensive acidity (the lowest pH of water and KCl immersion were 5.13 and 4.79, respectively), so the acidulation of stem flow is not the direct reason of spruce death.

虽然两树种树干径流对土壤均产生了酸化作用，但由于云杉树干周围土壤PH并没有出现较强的酸性（水浸pH下降到5.13，盐浸pH下降到4.79），因此，还不能认为云杉的衰退死亡与树干径流的酸化作用有直接关系。

In discussion about the usage of the timber materials and added preservatives, with the good physical property, timber of Matsu including Japanese red pine (Akamatsu / Pinus densiflora, Japanese black pine (Kuromatsu / Pinus pentaphylla) and , Japanese larch (Karamatsu / Larix leptolepis) could often been seen in the usage of timber trusses on the specifications before the Japanese governed period.

木屋架用材上，统治初期主要沿用日本既有用材概念，常可见仕样书中指定力学性能较佳之松材（包括日本赤松、日本黑松及日本落叶松等材）作为木屋架用材；而柳杉则是最普遍被使用之材料。

Other trees which attract notice are: Pinus Massoniana; Cunninghamia Lanceolata; thuya Orientalis; sophora Japonica; Albizzia, Acacia with pink flowers in feathery clusters; Liriodendron or saddle Tree (group of six in front of the Kuling General hospital); Larix or Larch Tree; Fraxinus Sinensis or Ash; Alnus and Gymnocladus Chinesis or Soap Tree.

引人注目的还有马尾松、纯杉木、金钟柏、苦楝、合欢树。一丛一丛的开着粉红色花的槐树、鹅掌楸、马鞍树（牯岭人民医院门前有六簇）、落叶松、白蜡树苷、皂荚树特别引人注目。

The synthesis of larch extract tannin amphoteric water treatment agent was divided into three phases.

在实验过程中落叶松单宁两性水处理剂的合成主要分为三个阶段。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。